65 years of Aluminum Extrusion Industry in China

In 2020, China's aluminum extrusion industry withstood the test in the struggle against the COVID-19 epidemic, and its output reached a new high of 21380kt, an increase of 6.5% over the same period last year, accounting for more than 70% of the world. At the same time, all financial indicators showed a marked improvement. The sales interest rate rebounded to 2.7% for the first time, and the total profit of the whole industry was about 24.95 billion yuan. The overall level of technology and equipment is among the highest in the world. The product standard has been fully in line with the international standards, and has become the standard leader of building aluminum extruded materials. However, about 20% of the equipment is still at the world level in the early 1980s, and there is still a large gap between R & D and developed countries.

According to the author's calculation, in 2020, the production capacity of extruded aluminum in China is about 33000 kt, and the utilization rate of equipment in the extruded aluminum industry is only 65%, while that in developed countries is about 80%. It is estimated that the production capacity of extruded aluminum in China will be about 34320kt in 2021, an increase of about 4% over 2020.

China's extra-large aluminum extrusion enterprises

China Zhongwang Holdings Co., Ltd., production capacity > 850kt/a

China Zhongwang Holdings Co., Ltd. is one of the largest R & D and production enterprises of aluminum extruded materials in the world. The company has nearly 95 extruders, of which there are about 22 extruders with extrusion pressure ≥ 75MN (including 4 for 90MN, 3 for 125MN and 2 for 225MN). The company integrates alloy melting and casting, mold design, advanced equipment and product research and development, and mainly produces high-precision, large cross-section high value-added industrial aluminum alloy profiles. the products are widely used in transportation, aerospace, machinery and equipment, power appliances and other fields.

225MN single-acting horizontal aluminum extruder was ordered from Taiyuan heavy Industry Co., Ltd. in 2012 and manufactured by Tianjin Taiyuan heavy Machinery Co., Ltd. The author believes that at home and abroad, this extruder with such a strong extrusion pressure is unique.

Technical parameters of 225MN single-action horizontal extruder

Guangdong Xingfa Aluminum Co., Ltd., production capacity 800kt/a

Guangdong Xingfa Aluminum Co., Ltd. is a famous super-large enterprise specializing in the production of construction aluminum profiles and industrial aluminum profiles in China. The company is equipped with a complete modern production line, large-scale imported professional manufacturing equipment and digital quality control software system, and has five major production bases, which are located in Sanshui, Foshan, Yichun, Jiangxi, Chengdu, Sichuan and Qinyang, Henan.

In order to further develop industrial materials, the company has invested 1.18 billion yuan in new precision and intelligent manufacturing projects. At present, the project has passed the first phase of the investment plan, and the investment equipment mainly includes 1 90MN extrusion production line, 1 50MN extrusion production line, 4 imported automatic extrusion production lines, 3 vertical spraying lines, 4 broken bridge production lines, 1 auto parts sample line and 1 electronic parts production line. The project mainly develops and produces industrial aluminum alloy profiles, including transportation, electronic information, automotive lightweight and other aluminum profiles. After the completion of the project, it is expected to produce 150kt/a new high-end industrial profiles and high-grade construction profiles, as well as 30kt/a high-precision deep processing accessories products. The equipment and testing equipment of the project are imported from Germany, Britain, the United States, Japan and Italy, covering all major fields of aluminum alloy, with more than 200,000 specifications and models. related to building doors and windows curtain wall system, electronic equipment, mechanical equipment, rail transit, aerospace, shipbuilding and other industries of aluminum profile products and engineering solutions.

Asia Aluminium works Co., Ltd., production capacity 500kt/a

Asia Aluminium Co., Ltd. has 46 extruders. The company is mainly engaged in the production of architectural aluminum profiles, with a design dimension accuracy of 0.005mm Mel 0.01mm. It has many advanced surface treatment production lines such as oxidation and spraying imported from Japan, Italy, the United States and Switzerland. The main venue of the 2022 Qatar World Cup is made of customized aluminum alloy profiles specially designed by the company.

Phoenix aluminum industry co., Ltd., production capacity 750kt/a

Feng Aluminium Industry Co., Ltd. is a large-scale comprehensive leading enterprise specializing in the research and development, production, sales and service of aluminum profiles in China, and its market share of building materials has been the first in the world for many years in a row. The company has two bases located in Nanhai and Sanshui, covering casting, extrusion, mold design and manufacturing, oxidation coloring, powder spraying, fluorocarbon spraying, thermal insulation profiles, wood grain profiles, high-end system doors and windows, deep processing and other links. The industrial chain is complete and can produce more than 4000 series and more than 100000 varieties of products. Products are widely used in building doors, windows and curtain walls, interior decoration, transportation, aerospace, military, shipping, electronics, machinery and other fields.

The company has four major business sectors, such as Building Materials Division, Industrial Materials Division, High-end door and window system Division, and decorative Materials Division. The main production lines include 8 25T melting casting furnaces, 98 6MN-100MN extruder production lines, 4 fully automatic vertical oxidation and electrophoresis lines, 2 horizontal oxidation and electrophoresis lines, 13 fully automatic 3m/min chain fast vertical powder spraying lines, 2 horizontal fast color changing powder lines, 2 dedicated horizontal fluorocarbon production lines, 2 fluorocarbon / crystal swimming production lines, 1 vertical wood grain production line, 4 3D/4D production lines, There are 40 heat transfer wood grain production lines, 300000 m2 system door and window production lines and 25 sets of mold NC machining centers.

In 2014, a "lead-free 6020A wrought aluminum alloy" developed by the company was selected as an international brand, which is China's first international brand registered with the international brand of wrought aluminum and aluminum alloy under the identity of "developed in China". The alloy has the advantages of lead-free, easy to cut and environmental protection, so it is widely used in all industrial standard parts that need to be cut. In addition, the company takes the lead in introducing 3D/4D printing production line in China's aluminum extrusion industry.

Huajian Aluminum Group Co., Ltd., production capacity 750kt/a

Shandong Huajian Aluminum Group Co., Ltd. is a key production and scientific research enterprise in the field of aluminum alloy building profiles and industrial profiles in China, and has developed into a large enterprise group dominated by aluminum profile industry and coordinated development of other related industries. The company has "five districts, three gardens and two platforms". Among them, five production plants include Huajian Aluminium first Branch, second Branch, third Branch, Huajian Industrial Park, (Binzhou) High-end Aluminum intensive processing production Base, and three industrial parks include China-Europe Energy-saving door and window Industrial Park, China Aluminum Formwork Industrial Park and Huajian Agricultural Ecological Park, two service platforms include China International door and window Curtain Wall Exhibition City Exhibition platform and Shandong HuaAluminum Inspection Service Co., Ltd. Testing platform.

The company has nearly 100 extrusion lines, 5 oxidation electrophoresis lines, 24 powder spraying lines, 5 fluorocarbon lines, 32 thermal insulation lines and 24 glue injection lines. Anodizing production line, coloring electrophoresis production line, three-step thermal insulation production line and glue injection production line are all produced by well-known domestic manufacturers, which are at the domestic advanced level. Powder and fluorocarbon paint spraying are equipped with foreign advanced key components on the basis of the introduction of domestic well-known enterprise equipment. At the same time, the company has also installed two automatic thermal insulation production lines, which can realize automatic toothing, piercing and compounding in the production of thermal insulated aluminum profiles, which improves product quality and production efficiency, and reduces labor intensity. In addition, the company's vertical powder spraying production line adopts a high-efficiency separation whirlwind, with a single separation rate of more than 98%; the automatic spray gun, control device and powder supply center are all imported original equipment, which is in the international leading level; the automatic Static spray gun and high-speed magnetic polarization correction turbine cup equipped with fluorocarbon production line are also at the international top level.

Guangya Aluminum (Group) Co., Ltd., production capacity 600kt/a

With assets of more than 3 billion yuan, Guangya Aluminum (Group) Co., Ltd. has three large aluminum profile production bases located in Nanhai, Sanshui, Guangdong and Linyi, Shandong Province, equipped with 75 8MN-40MN extrusion production lines, 9 spraying production lines, 4 oxidation and electrophoresis production lines, 10 thermal insulation profile production lines and more than 500 sets of key production equipment, most of which are made of domestic and foreign well-known brands.

Among them, Nanhai base mainly produces building aluminum profiles and industrial aluminum profiles, which are equipped with 25 extrusion production lines, 5 spraying production lines and 4 thermal insulation profile production lines. Sanshui Base mainly produces building aluminum profiles and industrial aluminum profiles, which is equipped with 35 extrusion production lines, 4 oxidation production lines, 2 spraying production lines and 4 thermal insulation profile production lines. Shandong Linyi production base mainly produces building aluminum profiles, which is equipped with 12 extrusion production lines, 1 vertical spraying production line, 1 horizontal spraying line and 2 thermal insulation profile production lines.

In recent years, the company continues to increase the pace of expansion, successively setting up aluminum alloy ingots and casting enterprises in Yuncheng, Shanxi, Baise, Guangxi, and Meishan, Sichuan.

Jianmei Aluminum Group Co., Ltd., production capacity 520kt/a

Jianmei Aluminum Group Co., Ltd. is a world-class modern aluminum extrusion enterprise, which has achieved fruitful results in recent years: in the aspect of high-end architectural aluminum, it provides building profiles for 5 of the 10 tallest skyscrapers in the world; in terms of system doors and windows, we have independently developed 6 systems and more than 80 series of products that can adapt to various climatic conditions, which are widely used in many landmark buildings at home and abroad. In the field of industrial aluminum, we have developed high-end aluminum in transportation, equipment manufacturing, 5G communications and other fields, which are used in global famous customers such as Huawei, Ericsson, BYD, Tesla and so on. and won the most potential automotive material innovation award for the company in 2019 and 2020.

The company is equipped with 20 sets of melting furnace groups, 52 6MN-90MN extrusion lines, 8 oxidation electrophoresis lines, 20 spraying lines of all kinds, first-class R & D and testing platforms such as national enterprise technology center, postdoctoral research workstation, national recognized laboratory, etc., has participated in 6 national scientific research projects, has more than 750pieces of patents, 112pieces of software copyright, and participated in the formulation and revision of more than 180standards. And won the "Guangdong Provincial Government quality Award", "China quality Award nomination Award", "Top 500 Chinese real estate development enterprises top 500 aluminum profile suppliers" and other awards and honors.

Fujian Fenan Group Co., Ltd., production capacity 500kt/a

Fujian Fenan Group Co., Ltd. is a comprehensive modern group specializing in the research and production of aluminum alloy profiles, system doors and windows, solar photovoltaic brackets and automotive aluminum components. Fujian Fenan Aluminum Industry Base and Henan Fenan Aluminum Industry Base have been built. Sichuan Fenan Aluminum Industry Base is under construction, with more than 100 extruders. Sichuan Fenan Aluminum Co., Ltd. under construction is located in Luzhou Circular economy Industrial Park, which is divided into two phases. The first phase has started construction in 2020, with more than 40 extrusion lines and other production lines with a production capacity of 120kt/a. Henan Fenan aluminum industry's leading products are building profiles and all-aluminum carriages, with 22 extrusion lines and a production capacity of 80kt, and plans to expand the second phase of 100kt/a new high-end profile project.

Daqing Yugang Longquan Aluminum Extruded material Project, production capacity 500kt/a

Longquan aluminum processing base in Yugang, Daqing is a super aluminum and deep processing base under construction. Its extruded material project is built in advance, and its production capacity is up to 500kt/a.

Guangdong Weiye Aluminum Co., Ltd., production capacity 620kt/a

Guangdong Weiye Aluminum Co., Ltd. has set up three major brands of Weiye aluminum, Weiye doors and windows, Weiye aluminum furniture, the products are widely used in construction engineering, transportation, electronic appliances, sanitary ware, custom home decoration, home office and other industries. The company has three major industrial bases: area An of Shishan production base in Nanhai, area B of Shishan production base in Nanhai, and Xinyi, Xuzhou, Jiangsu Province, with 15 melting and casting production lines, 65 6MN-70MN extruders and 26 surface treatment production lines. At the same time, the company also has large-scale Asian fully automatic vertical oxidation electrophoresis production line, fully automatic vertical storage and other intelligent production systems.

In 2020, the company began to expand its Jiangsu branch plant, which is mainly used to implement the "Weiye high-end environmental protection and energy-saving aluminum profile production base project". The company also plans to build 12 environment-friendly casting rod production lines, over 50 high-efficiency extrusion production lines, 15 high-performance aluminum alloy heat treatment furnaces, 8 automatic surface sandblasting production lines, 8 intelligent Static powder spraying production lines, 2 vertical oxidation and electrophoresis production lines, 2 fluorocarbon spraying production lines and supporting construction of mold manufacturing center, intelligent finished product warehouse and wastewater treatment center.

Large aluminum extrusion enterprises in China

Guangdong Homei Aluminum Co., Ltd., production capacity 300kt/a

Guangdong Homei Aluminum Co., Ltd. is committed to the R & D, design and manufacture of energy-saving building materials, with 34 extrusion production lines and 35 6MN-90MN extruders, which sell well in more than 80 countries and regions such as North America, Europe and Asia. The company deeply ploughs the high-precision and cutting-edge products of building profiles, and its subsidiary Guangdong Bekeluo Curtain Wall door and window system Co., Ltd. is China's leading provider of overall solutions for energy-saving system doors and windows, with a market share of more than 70% in South China. Another subsidiary, Qingyuan Kejian door and window Curtain Wall Decoration Co., Ltd. has broken through a number of key technologies of energy-saving system doors and windows and established a series of product standards in line with European door and window standards. Launched the sunshine room, lift sliding doors and other new door and window products. Through the expansion of the whole industrial chain on a large scale, the company has formed a complete industrial chain including energy-saving system door and window design, profile processing, door and window processing, installation, testing and so on. The main production processes and office facilities have been automated and informationized.

Shandong Weisheng Aluminum Co., Ltd., production capacity 200kt/a

Shandong Weisheng Aluminum Industry Co., Ltd. is a national high-tech enterprise integrating R & D, design and production of architectural aluminum profiles, high-end industrial aluminum and decorative aluminum. It has a full process production line and a full set of equipment facilities for melting and casting-die design-extrusion-surface treatment-testing, and is equipped with more than 30 production lines of all kinds of extruders. In recent years, the company has successfully developed hundreds of new high-end industrial aluminum products, such as pump body, steel-aluminum composite rail, automotive aluminum profiles, wind turbine blades, and so on. the products are widely used in high-speed rail, subway and urban light rail, green building formwork, shipping transportation, solar power generation, aerospace and military fields. The company has a full range of building profiles, and its products sell well all over the country, and are exported to more than 20 countries and regions, such as Europe, the United States, Japan, South Korea and Africa.

Shandong Huachang Aluminum Plant Co., Ltd., production capacity 300kt/a

Guangdong Huachang Aluminum Factory Co., Ltd. has developed into a large-scale modern aluminum processing enterprise integrating aluminum profile design, R & D, production, deep processing and sales. The company has invested more than 1 billion yuan to purchase automatic die design and manufacturing equipment from home and abroad, extrusion die digital simulation design technology, on-line quenching device, PLC control system, high-speed extrusion function extrusion production line, automatic vertical oxidation electrophoretic painting production line, automatic horizontal oxidation electrophoretic painting production line, automatic three-dimensional wood grain production line, automatic horizontal powder and fluorocarbon spraying dual-purpose production line. Automatic three-dimensional powder spraying production line; And developed the first automatic three-dimensional finished product warehouse and automated three-dimensional extrusion die warehouse and other aluminum production equipment and inspection equipment. Weichang brand aluminum products produced by the company have more than 100 series and more than 10,000 specifications, with its good mechanical properties, high geometric accuracy, uniform color, good finish, corrosion resistance and other advantages, covering aluminum alloy building door and window profiles and curtain wall profiles and many other fields and thousands of product varieties.

Fujian Minfa Aluminum Co., Ltd., production capacity 320kt/a

Fujian Minfa Aluminum Co., Ltd. specializes in the production of building aluminum profiles, industrial aluminum profiles, building aluminum formwork, and engaged in a variety of aluminum products deep processing business, is a national large second-grade industrial enterprise. In 2016, it was rated as "Fujian Industry key leading Enterprise" and "Fujian Informatization and industrialization High-growth Enterprise" by Fujian Economic and Informatization Commission. The company has set up two production bases located in Nanan and Dongtian, with modern aluminum profile processing production lines from melting and casting, extrusion to various surface treatments, and has developed more than 200 series and more than 20,000 kinds of aluminum profile products. the main varieties and surface treatment methods are oxidation coloring, electrophoretic painting, powder spraying, fluorocarbon painting, broken bridge thermal insulation, wood grain transfer printing, high appearance drawing, polishing dyeing, steel shot sandblasting and so on. The products sell well all over the country and more than 40 countries and regions in the world. The company has 39 6MN-55MN extruders, 15 surface treatment lines and 2 hot lines for glue injection.

Guangdong Xinhe Aluminum Co., Ltd., production capacity 400kt/a

Guangdong Xinhe Aluminum Co., Ltd. has three production bases located in Nanhai, Yunfu Xinxing and Foshan, equipped with 84 extruders and 59 production lines for all kinds of meters. And the use of domestic advanced automatic three-dimensional finished product warehouse and mold warehouse, the comprehensive strength is in the forefront of the industry.

Shandong Yuyang Aluminum Co., Ltd., production capacity 200kt/a

Binzhou Yuyang Aluminum Co., Ltd. adopts the latest automatic production process, which integrates smelting, extrusion, electrophoresis, powder spraying and mold development of high-quality aluminum products. there are mold branch plant, extrusion branch plant, oxidation branch plant, electrophoresis branch plant, composite workshop, packaging workshop and so on. 6MN-36MN has 55 international leading extrusion production lines, 8 oxidation lines, 6 electrophoretic coating lines, 8 environmental protection and energy saving cold bridge production lines, 3 aluminum and wood window production lines, 2 vertical Static powder spraying lines and 4 horizontal Static powder spraying lines, among which the spraying line is equipped with the world's top Swiss Golden Horse spray gun. The company is an enterprise that can produce all kinds of high-grade building aluminum alloy door and window profiles, aluminum wood profiles, decorative profiles and industrial profiles, and can also design and produce all kinds of special profiles according to customer requirements.

Suzhou Lopsjin Aluminum Co., Ltd., production capacity 200kt/a

Suzhou Lopsjin Aluminum Co., Ltd. has a total of 34 aluminum profile extruders of various types, including Xinjie from Taiwan, Uber of Japan, Granke of the United States, Danieli of Italy, etc., and has 2 horizontal oxidation lines and 1 vertical oxidation line. can process oxidation and electrophoresis profiles to meet the differentiated needs of the market; It has 1 spray pretreatment line, 3 powder spray lines (including 2 horizontal lines and 1 vertical line) and 2 transfer lines.

Shandong Kemite Aluminum Co., Ltd., production capacity 230kt/a

Shandong Kemite Aluminum Co., Ltd. is one of the most complete surface treatment aluminum profile enterprises in China, with 230kt/an aluminum production capacity and 500000 square meters of product customization and deep processing capacity. The company focuses on the introduction of advanced profile production equipment at home and abroad, leading technical performance, process energy saving and environmental protection. The company has a wide range of products, including anodizing, electrophoretic painting, powder spraying, wood grain transfer printing, three-dimensional wood grain, 3D/4D feel three-dimensional wood grain, fluorocarbon paint spraying, water-based paint spraying, extinction electrophoresis, thermal insulation through strip, thermal insulation glue injection and other architectural and industrial profiles, the products are widely used in building door and window engineering, large-scale curtain walls, high-grade decoration and industrial manufacturing and other fields. Among them, the company's "Mikel" building door, window and curtain wall system was certified as "Chinese energy-saving products" by the National quality Certification Center, obtained the green building selection product certificate, and was included in the government procurement list of energy-saving products.

Jiangyin Donghua Aluminum Technology Co., Ltd., production capacity 210kt/a

Jiangyin Donghua Aluminum Technology Co., Ltd. has 8 double-chamber regenerative energy-saving aluminum melting furnaces, 4 vertical hot-top casting machines with the same level, 43 6.6MN-40MN aluminum profile production lines, 7 oxidation and electrophoresis lines, 3 powder spraying lines, 1 fluorocarbon painting line, 3 broken bridge thermal insulation production lines, integrating melting and casting, extrusion, oxidation, electrophoresis, powder spraying, broken bridge thermal insulation, mold manufacturing, aluminum deep processing and other functions.

Guangdong Meiyabao Aluminum Co., Ltd., production capacity 350kt/a

Qingyuan Meiyabao Aluminum Co., Ltd. mainly produces and sells construction aluminum, decorative aluminum and industrial aluminum. It is one of the earliest enterprises to produce aluminum profiles in China. There are 4 production bases, 1 professional sales company, 62 extrusion production lines (6.5MN-36MN), 8 oxidation production lines and 6 spraying production lines.

Daye Hongtai Aluminum Co., Ltd., production capacity 380kt/a

Daye Hongtai Aluminum Co., Ltd. produces aluminum alloy building profiles. There are 56 8MN-30MN extruder production lines, 7 oxidation lines, 4 spraying lines and 11 wood grain lines.

Zhejiang Dongliang New Materials Co., Ltd., production capacity 200kt/a

Zhejiang Dongliang New Materials Co., Ltd. specializes in producing all kinds of aluminum materials for construction. At present, there are 34 6MN-25MN extruders, 14 surface treatment lines, 8 glue injection lines, 15 thread piercing lines and 1 intelligent three-dimensional warehouse.

Fujian Nanping Aluminum Co., Ltd., production capacity 300kt/a

Fujian Nanping Aluminum Co., Ltd. has 47 extrusion production lines. Include 1 8MN extrusion production line, 16 10MN extrusion production line, 2 14MN extrusion production line, 6 16MN extrusion production line, 8 18MN extrusion production line, 2 26MN extrusion production line, 1 27MN extrusion production line, 1 30MN extrusion production line, 3 32MN extrusion production line, 1 36MN extrusion production line, 1 38MN extrusion production line, 2 40MN extrusion production line, 1 55MN extrusion production line, etc. And matching the corresponding surface treatment production line. The processing capacity of aluminum doors and windows of the company's aluminum engineering is 500000 m2 shock a, the processing capacity of aluminum curtain wall is 300000 m2 shock a, the processing capacity of building aluminum formwork is 200000 m2 shock a, and the processing capacity of aluminum structure parts is 100000 m2 shock a.

Mingdi Aluminum Co., Ltd., production capacity 280kt/a

Mingdi Aluminum Co., Ltd., which integrates design and development, production testing, sales and service, is the largest aluminum profile production base in western China, specializing in the production of building aluminum alloy energy-saving door and window profiles, curtain wall profiles and other building aluminum profiles. the products are sold to all provinces, municipalities and autonomous regions throughout the country, and exported to some international markets. The production area of the enterprise has extrusion production line at international or domestic advanced level, ultra-long aging furnace, fully automatic vertical hanging oxidation electrophoresis production line imported from Japan and imported horizontal electrophoresis automatic production line, vertical environmental protection spraying automatic production line, fluorocarbon paint and water-based paint spray production line, wood grain transfer printing and three-dimensional wood grain energy-saving profile production line, glue injection energy-saving aluminum profile production line, strip thermal insulation and energy-saving aluminum production line, Advanced processing equipment in which aluminum is used instead of wood, such as the processing and assembly production line of system doors and windows, all-aluminum household and imitation wood stair railings, At the same time, it has advanced and complete quality testing equipment and laboratories. The company has 44 5MN-36MN extruders.

Guangdong Gaodeng Aluminum Co., Ltd., production capacity 280kt/a

Guangdong Gaodeng Aluminum Industry Co., Ltd. is a large-scale national high-tech enterprise integrating the research, design, production and sales of aluminum alloy building profiles, industrial materials, aluminum alloy doors and windows curtain walls and aluminum alloy deep processing products. It is a designated production enterprise of aluminum doors and windows curtain wall of the Ministry of Construction and one of the important revision units of national aluminum profile industry standards. It now has two major production bases and four subsidiaries located in Zhaoqing and Foshan. The company is equipped with 10 melting and casting production lines, 38 8MN-60MN extrusion lines, 5 oxidation lines, 5 powder spraying lines, 20 wood grain lines, 1 piercing line, 1 glue injection line, 4 deep processing lines for doors and windows, and 3 aluminum ladder production lines.

Chengdu Sunshine Aluminum products Co., Ltd., production capacity 450kt/a

Chengdu Sunshine Aluminum products Co., Ltd. is the largest aluminum profile design, production, sales and deep processing enterprise in Southwest China, equipped with domestic and foreign advanced production equipment such as mold, melting and casting, extrusion, oxidation, electrophoresis, spraying, fluorocarbon, thermal insulation and deep processing, the products cover all kinds of high-grade energy-saving building profiles, high-performance industrial profiles, pipes, bars and their deep processing products. The company has set up melting and casting workshop, extrusion workshop 1, extrusion workshop 2, extrusion workshop 3, oxidation workshop, spraying workshop, packaging workshop, thermal insulation workshop, finished product workshop, mold maintenance workshop, aluminum wood workshop, mold manufacturing workshop, door and window trial production center, aluminum veneer workshop, plastic and steel workshop, deep processing workshop and so on.

Sichuan Samsung New material Technology Co., Ltd., production capacity 300kt/a

Sichuan Samsung New material Technology Co., Ltd. has a complete production line from melting and casting, extrusion, surface treatment and deep processing, of which the largest extruder is 70mn, and all kinds of surface treatment methods are complete.

Henan Rongye (Nanyang) Co., Ltd., production capacity 300kt/a

In 2016, the 300kt/a high-end aluminum alloy profile project of Rongyang Industrial (Nanyang) Co., Ltd. achieved mass production. The company has complete industrial lines such as aluminum profile processing, aluminum extrusion, CNC machine tool finishing and so on.

Jingge aluminum profile Moluo project, production capacity 210kt/a

In 2017, the Moluo Municipal Party Committee, Municipal Government and Hunan Jingge Investment holding Group formally signed a project agreement. After the completion of the project, it can produce 210kt/a high-grade building aluminum profiles and 1.5 million square meters of Luban energy-saving doors and windows curtain wall.

Wuqiang Project of Beijing Heping Aluminum Co., Ltd.

In 2017, Beijing Heping Aluminum Company invested in the construction of high-tech enterprises with aluminum alloy industry as the core in Wuqiang County, integrating product research and development, material production, engineering design, precision manufacturing, finished product processing, engineering construction, consulting services, retail door and window terminals and other business sectors to achieve large-scale, professional and group development. The pilot production of the project was carried out in 2021.

Shandong Lide Zouping Aluminum Co., Ltd., production capacity 320kt/a

China has become the world's most technologically advanced and lowest-cost manufacturer of solar power plants, accounting for more than 80% of the world's total. The rapid development of solar power plants has also led to a gradual increase in the demand for related materials. Under the background of Zouping Municipal Party Committee and Municipal Government making every effort to promote investment promotion and actively optimize the business environment, and relying on the high-quality resources and production factors of Weiqiao Venture and other enterprises, Jiangsu Lide Aluminum Co., Ltd. plans to invest 2 billion yuan in Zouping to build an aluminum alloy frame support project for 320kt/a solar power station, which will be signed in Weiqiao Venture Group in 2020.

Sichuan Sunshine Jianduan Aluminum Co., Ltd., production capacity 210kt/a

Sichuan Sunshine Jianduan Aluminum Co., Ltd. has installed 12 melting and casting production lines, 72 extrusion production lines, 4 oxidation production lines, 12 spraying production lines and other production equipment. Professional equipment and technology are mainly introduced from Germany, Japan, the United Kingdom, the United States, South Korea and other countries. The company mainly produces electronic appliances, automobiles, high-speed locomotives, rail transit, aviation, ships, radiators, power systems, new energy-saving, advertising LED, solar energy, machinery, curtain walls, building formwork, outdoor exhibitions, decoration and other high-performance aluminum alloy profiles. The technical equipment level and production capacity of the project will be in the forefront of the country, and it will become a scientific and technological, innovative, energy-saving and environment-friendly production base of high-performance aluminum alloy with the combination of new building profiles and industrial profiles in the west.

Lanzhou Lanya Aluminum Co., Ltd., production capacity 200kt/a

Lanya Aluminum Co., Ltd. is located in Lanzhou Honggu Technical and Economic Development Zone, with 60 extrusion lines, using raw aluminum from Chinalco Lanzhou Branch for production.

Medium aluminum extrusion enterprise (production capacity 200kt/a-50kt/a)

The total production capacity of extruded materials in No. 4 Plant of Chinalco is about 200kt/a.

Chinalco has four plants that can produce extruded materials, namely, Southwest Aluminum (Group) Co., Ltd., Northeast Light Alloy Co., Ltd., Northwest Aluminum processing Co., Ltd., and Chinalco Sapa Aluminum (Chongqing) Co., Ltd.

The four plants have a total of 18 extruders of 6MN-185MN, and the total production capacity of extruded materials is about 200kt/a. Northeast Light Alloy Co., Ltd., which was put into production in July 1956, is the first aluminum extrusion project in China, with 9 hydraulic presses. The designed product capacity is 900t/a for pipe, 3kt/a for profile, 1.1kt/a for bar and 1kt/a for wire. Northwest Aluminum Co., Ltd. introduced a 45MN reverse extruder from Mel Company in 2003 and upgraded it to 47.5MN in 2019. The 100MN high-end aluminum alloy intelligent manufacturing line of Chinalco Sapa Special Aluminum (Chongqing) Co., Ltd. was put into production in September 2019.

Capacity 200kt/an of Tianjin Jinpeng Aluminum Manufacturing Co., Ltd.

Tianjin Jinpeng Aluminum Manufacturing Co., Ltd. has a complete aluminum processing industry chain from product design, mold design and manufacturing, melting and casting, extrusion, anodizing, electrophoretic painting, powder spraying, fluorocarbon painting, thermal insulation profiles, deep processing, etc., has 34 extrusion production lines, 5 vertical spraying lines, 1 horizontal spraying line, 1 horizontal fluorocarbon spraying line, 1 horizontal electrophoretic oxidation line, the largest extruder 36mn, The total production capacity is about 200kt/a.

Production capacity 70kt/an of Huaxia Aluminum Co., Ltd.

Huaxia Aluminum Co., Ltd. was founded in 2007, located in Daye City, Hubei Province, is an enterprise specializing in the production of construction aluminum profiles, industrial aluminum profiles and decorative aluminum profiles. The company has 25 extrusion production lines, 1 anodizing production line, 1 electrophoretic painting production line, 2 vertical powder spraying production lines, 2 horizontal powder spraying production lines, 12 vacuum wood grain transfer furnaces, 5 sandblasting profile production lines, 2 thermal insulation profile through-strip production lines, 2 thermal insulation profile casting production lines, and annual production capacity of aluminum profiles 70kt/a.

Production capacity 100kt/an of aluminum extruded plate of Shengtong Group

Hunan Shengtong Group is a manufacturer of raw aluminum and aluminum rolled timber. The group invested 2.5 billion yuan to build a 100kt/an industrial aluminum extrusion project in Changsha plant. The project is equipped with 2 melting and casting production lines (round ingot capacity 140kt/a) and 14 extrusion production lines (including 1 75MN, 55MN and 36MN each). The main production line technology and production equipment all belong to the advanced level at home and abroad.

Capacity 50kt/an of Anhui Zhongshi Aluminum Co., Ltd.

Anhui Zhongshi Aluminum Co., Ltd. has invested about 80 million yuan and plans to build eight production lines. Two production lines in the first phase have been put into production with a production capacity of 50kt/a. The company is mainly engaged in the R & D and production of aluminum alloy building profiles and industrial profiles, with international advanced production technology and a full set of imported production equipment (Italian powder spraying, fireproof imitation wood grain production line and Taiwan oxidation, extrusion, electrophoretic coating production line).

Production capacity 70kt/an of Hubei Lanhua Aluminum Co., Ltd.

Lanhua Aluminum Co., Ltd. was founded in 2002, located in Daye City, Hubei Province, is a professional engaged in aluminum profile manufacturing and deep processing enterprises. The company has 18 aluminum extrusion production lines, 2 oxidation electrophoresis production lines, 2 vertical spraying production lines and 1 horizontal spraying production line. The production capacity of aluminum profiles is 70kt / a, and the products are exported to Africa and Southeast Asian countries. The aluminum furniture produced by the company is fashionable in style, complete in design and color, beautiful and practical.

Capacity 130kt/an of Jinqiao Aluminum profile Co., Ltd.

Jinqiao Aluminum is a large-scale industrial aluminum profile manufacturing enterprise, established in 1983, located in Taishan City, Guangdong Province.

The company has a complete industrial chain from mold design and manufacture-melting-casting-extrusion-surface treatment-deep processing. At present, it has 8 melting and casting production lines, 16 melting and casting furnaces, 35 extrusion production lines of each tonnage, of which two largest extruders are 61.8mn. Extrusion capacity reaches 130kt. There are 2 Static powder spraying production lines, 2 PVF2 fluorocarbon spraying production lines, 1 vertical spraying production line, 3 oxidation and chemical polishing coloring production lines, 4 mechanical polishing production lines and more than 160 sets of CNC processing equipment. The products are mainly used in consumer electronics, automotive, aviation, shipping, renewable energy systems, construction and so on.

In order to keep up with the changes in the market and broaden the scope of business, Jinqiao Aluminum aims at the development trend of the auto parts market and grabs the light alloy auto parts market. At present, the company's new metal material project has been completed, and Jinqiao Light Alloy Technology (Jiangmen) Co., Ltd. has been established. After the completion of the project, it can produce 300000 sets of car chassis and battery trays, 2 million sets of car skylight tracks, 4 million sets of car bumpers, energy absorption boxes, shock absorbers, seat slides, steering shafts and other aluminum alloy parts.

Capacity 120kt/an of Guangdong Aomei Aluminium Co., Ltd.

Australia-American Aluminium Co., Ltd. was established in 2005, located in Sanshui District, Foshan City, and belongs to Malaysia Qili Industrial Group. It has 6 melting furnaces, 22 extruders and a production capacity of 120kt gamma, mainly industrial materials.

Production capacity 90kt/an of Guangdong Yonglijian Aluminum Co., Ltd.

Yonglijian Aluminum Co., Ltd. was founded in September 1986 and has built an industrial chain production line for casting, extrusion and surface treatment. among them, there are 3 casting furnaces, 22 extruders, 2 oxidation production lines, 2 electrophoresis production lines, 3 spraying production lines, 1 fluorocarbon spraying production line, 3 wood grain production lines, 1 thermal insulation pouring production line, 2 thermal insulation piercing production lines and 1 door and window processing production line. The products have more than 200 series and more than 10000 specifications, with a production capacity of 90 kt, more than 300000 square meters of doors, windows and curtain walls and 1100 employees.

Capacity 100kt/an of Anhui Guangyin Aluminum Co., Ltd.

Guangyin Aluminum Industry Co., Ltd. is located in Xiatang Town Industrial Park, Changfeng County, Hefei City, founded in 2012, invested and built by Guangxi Investment Group Yinhai Aluminum Co., Ltd., with full-process production lines from melting, extrusion to surface treatment, intensive processing, packaging and sales, mainly equipped with 21 aluminum extrusion production lines with a maximum extrusion pressure of 27.5mn. One vertical spraying production line, one vertical oxidation production line, one sewage treatment plant, the aluminum processing capacity is 100kt / a, the surface treatment capacity is 70kt / a, and the sewage treatment capacity is about 7000m2/d.

Production capacity 60kt/an of Guangdong Foshan Yinghui Aluminum profile Co., Ltd.

Yinghui Aluminum officially entered the aluminum profile industry in 1993 and now has three major brands: "Meiyuan Samsung", "Hehui Aluminum" and "Hehui Aluminum Building system". The company has a complete production line from aluminum alloy melting and casting, mold manufacturing, extrusion, surface treatment and deep processing. Among them, there are 5 aluminum alloy melting and casting furnaces, 19 round casting ingot production lines, 19 6MN color 20mn extrusion production lines, 2 horizontal powder spraying production lines, one horizontal oxidation production line and one horizontal electrophoresis production line, with a comprehensive production capacity of 60kt/a.

Capacity 100kt/an of Nangui Aluminum Group Co., Ltd.

Nangui Aluminum Group is an innovative and demonstration high-tech enterprise with two major production bases in Tianyang County of Guangxi and Jianli County of Hubei Province. The products are widely used in construction, infrastructure, civil, industrial profiles, automobile manufacturing, computer manufacturing, interior decoration, aerospace, communications technology and other fields, profile processing capacity 100kt/a.

Capacity 60kt/an of Henan Swan Aluminum Co., Ltd.

Henan Swan Aluminum Co., Ltd. is located in Qinyang City, which belongs to Swan Group. In 2020, there are 14 6.5MN-26MN extrusion lines with a production capacity of 60kt. The planned production capacity is 200kt/a.

Production capacity 100kt/an of Liaoning Tuotian Aluminum Co., Ltd.

Liaoning Tuotian Aluminum Co., Ltd. was founded in 2000, is a collection of aluminum alloy profile product research and development, production and sales as one, and has the ability to produce hot extrusion dies, powder coatings, thermal insulation strips, packaging materials and other comprehensive enterprises. The company has set casting, extrusion, oxidation, electrophoresis, powder spraying, fluorocarbon spraying, thermal insulation, wood grain transfer printing, crystal swimming, fluorine swimming, drawing aluminum and foam filling, sandblasting, mechanical drawing line and other production processes; and doors and windows processing, mold manufacturing, powder manufacturing, thermal insulation strip manufacturing, packaging materials manufacturing as supporting, forming a rare industry supporting the most complete aluminum profile production system, capacity 100kt/a. The company has obtained more than 120 patents. The products have more than 20000 series, more than 20000 models and specifications, and more than 1500 colors for customers to choose from.

Production capacity 100kt/an of Jiangsu Huashan Aluminum Technology Co., Ltd.

Jiangsu Huacheng Aluminum Technology Co., Ltd., formerly known as Suzhou Qingcheng Aluminum material Co., Ltd. In order to meet the needs of the market and customers and expand the production scale, in 2012, the company's legal person Jiangang invested a lot of money to build Jiangsu Huabao Aluminum Technology Co., Ltd. The company is a large-scale professional aluminum products profile enterprise integrating design, research and development, production and sales, with more than 20 production lines and production capacity of 100kt/a. The company's main products are building energy-saving door and window profiles, building energy-saving curtain wall profiles, strip insulation profiles, glue injection insulation profiles, advanced wood grain transfer profiles, industrial profiles and foreign trade profiles.

Capacity 150kt/an of Chongqing Xinmei Fish Industry (Group) Co., Ltd.

Chongqing Xinmeiyu Industrial (Group) Co., Ltd. is a leading enterprise and production base of aluminum alloy profiles and plastic steel profiles in Southwest China. At present, the company has 22 6MN-55MN extruders and the production capacity of 150kt/an aluminum alloy profiles and 30kt/a plastic steel profiles. In 2020, the company invested in the construction of a new 50kt/a project, with 8 extrusion lines and deep processing equipment.

Production capacity 50kt/an of Guangdong Hesheng Aluminum Co., Ltd.

Founded in 2005, Hesheng Aluminum is a high-quality supplier specializing in the R & D and production of industrial aluminum profiles and their deeply processed products, which are mainly used in consumer electronics, consumer durables, auto parts and other fields. best-selling all over the country and exported to Japan, South Korea, the United States and Europe and other regions. The company was successfully listed on the Shenzhen Stock Exchange in January 2017. in 2019, the main business income was 1.214 billion yuan, an increase of 21.93 percent over the previous year, and the output was 38.5 kt, an increase of 6.60 percent over the previous year, with a production capacity of 50kt/a.

The company attaches importance to scientific and technological innovation, and set up New Materials Research Institute and New Energy lightweight Research Institute in 2019, and continues to strengthen the development of new materials and the promotion of major R & D projects. There are four new R & D projects, mainly including the research and development of new materials, new processes, extrusion molding, deep processing, moulds and other advanced technologies of strategic significance.

Capacity 60kt/an of Anhui Chizhou Wanfeng Seiko Aluminum Co., Ltd.

Wanfeng Seiko Aluminum Co., Ltd. was founded in 2018 with a design capacity of 60kt, 7 7MN-25MN extrusion production lines and advanced production and testing equipment. Its main business is R & D and manufacturing of lightweight aluminum profiles for automobiles, aluminum profiles for medical devices and other industrial aluminum profiles. Its main customers include Mercedes-Benz, Volkswagen, Dongfeng Fukang, FAW heavy truck, Great Wall, Zhongtai and other well-known car companies and medical equipment enterprises.

Capacity 150kt/an of Anhui Chizhou Anan Group Aluminum Co., Ltd.

Anan Aluminum Group was founded in 2015 with a production capacity of 150kt. It is a private enterprise that covers the whole industrial chain of high-end industrial aluminum profiles and integrates R & D, design, production and sales. It has a number of core subsidiaries, such as Chizhou Anan Seiko Aluminum Co., Ltd., Chizhou Anan New Materials Technology Co., Ltd., Anhui Anan Aviation equipment Technology Co., Ltd.

The company has about 189 sets of equipment and 20 6.3MN-27.5MN extrusion production lines. Anan Aluminum Group attaches great importance to technological innovation, including 2 provincial technology leaders, 3 senior engineers, 2 external professors, 15 engineers and 1 municipal "322" industrial innovation team.

Capacity 60kt/an of Chizhou Jiuhua Mingkun Aluminum Co., Ltd.

Founded in 2009, Jiuhua Mingkun Aluminum Co., Ltd. specializes in R & D, manufacturing and sales of high-performance electronic products, auto parts, doors, windows and accessories, industrial aluminum products and aluminum alloy building profiles. Jiuhua Mingkun Aluminum Co., Ltd. has 1 melting and casting production line, 11 6.3MN-27.5MN extrusion production lines, 1 spraying production line and 1 oxidation electrophoresis production line, and 150 CNC NC machining centers. The company has an existing production capacity of 50kg gamma, and the main related enterprises are Chizhou Mingkun Electronic Technology Co., Ltd., Anhui Mingkun Aluminum Co., Ltd., Anhui Mingkun Real Estate Co., Ltd.

Mingkun Electronic Technology is preparing to build a project covering the whole industry chain of production-extrusion-deep processing of high-end aluminum alloy ingots. The project has a total investment of 1 billion yuan, mainly including 2 40kg/a special aluminum ingot production lines, 10 8MN-60MN highly automated and intelligent extrusion production lines and electronic products, auto parts deep processing related equipment.

Capacity 60kt/an of Guizhou Shuntai Aluminum New material Co., Ltd.

Guizhou Shuntai Aluminum New Materials Co., Ltd. is located in Qingzhen, the first phase of the project was completed and put into production in November 2020, with a total investment of 300 million yuan to build 60kt/an aluminum profile and finished window, smart home, automobile special aluminum production project. The second phase of the project will start construction in March 2021 and will form an industrial chain production line of aluminum ingots and aluminum products, thus realizing the local conversion of bauxite-alumina-electrolytic aluminum ingots-aluminum profiles-finished windows and household aluminum materials in the park. The company belongs to Guangdong Foshan Jiahua Aluminum Co., Ltd.

Capacity 100kt/an of Henan Fenan Aluminum Co., Ltd.

The high-end industrial aluminum profile project of Henan Fenan Aluminum Co., Ltd. with the production capacity of 100kt/a began construction in February 2021. The total investment of the project is 1 billion yuan, including precision design die manufacturing workshop, intelligent extrusion workshop, intelligent three-dimensional material warehouse, design and R & D center, exhibition center, staff dormitory and so on. The products are widely used in auto parts, rail transit, solar photovoltaic bracket, wind power generation, 3C electronics, shipbuilding, military and other fields.

Production capacity 100kt/an of Sichuan Guangyuan Shimei Technology Co., Ltd.

Sichuan Guangyuan Shimei Technology Co., Ltd. is a high-end aluminum products project built by Hubei Shimei Technology Co., Ltd. in Guangyuan, Sichuan. The project mainly builds production capacity 100kt/a casting production line, 100kt/an aluminum profile and aluminum products production line, which is scheduled to be put into production in June 2023.

Production capacity 100kt/an of Guangxi Baise Caihong Aluminum Co., Ltd.

Baise Caihong Aluminum Co., Ltd. capacity 100kt/a large-section aluminum alloy profile project was put into production in April 2020, with blank production center, deep processing center and supporting facilities, with a total investment of about 500 million yuan, annual output of 100kt large-section aluminum profile and annual output of 200000 m2 aluminum formwork products. The project is built by Rainbow Aluminum relying on the development advantages of the city's aluminum profile industry and resources, meeting the needs of market development, cultivating emerging growth plates, and promoting the long-term planning to realize the large-scale and cluster development of the aluminum formwork industry. The smooth implementation of the project will further lengthen and thicken the local aluminum profile industry chain, which can drive the second take-off of the aluminum industry and related supporting industries.

Production capacity 50kt/an of Shaanxi Meixian Longhengda Aluminum Co., Ltd.

Shaanxi Baoji long Hengda Aluminum Co., Ltd. is located in Meixian Economic and technological Development Zone. Construction started in April 2020 with a total investment of 520 million yuan, including 10 6MN-26MN extrusion lines, 1 horizontal anodizing and electrophoretic production line, 1 vertical and 1 horizontal spraying lines, 2 wood grain transfer lines and 2 thermal insulation lines.

Capacity 100kt/an of Guizhou Chuana New Materials Co., Ltd.

The 100kt/an aluminum profile production project of Guizhou Chuana New material Technology Co., Ltd. was completed and put into production in July 2021. The construction address of the project is located in Xingming Village Aluminum processing Park, Weicheng Town, Qingzhen City. The construction scale is 100kt/an aluminum products, including aluminum ingot 50kt/an and aluminum alloy product 50kt/a.

Production capacity 170kt/an of Zhejiang Boao Aluminum Co., Ltd.

Boao Aluminum was founded in 2007, focusing on the high-end market of aluminum alloy profiles for construction, more than 95% of the products are doors and windows, curtain wall profiles, thermal insulation profiles account for 65%, the third phase of 50kt/an energy-saving aluminum profile project is under construction.

Production capacity 120kt/an of Jiangsu Peixian Huachang Aluminum Plant Co., Ltd.

Guangdong Huachang Aluminum Plant Co., Ltd. established its production base in Peixian in 2007. It has 4 advanced casting production lines, 31 extrusion production lines, 3 oxidation and electrophoresis production lines, 4 spraying production lines, 8 thermal insulation profile production lines and 1 glue injection production line.

Production capacity 120kt/an of Shandong Hongming Aluminum Co., Ltd.

Shandong Hongming Aluminum Co., Ltd. was founded in 2007, specializing in the production of low-carbon, environmental protection, energy-saving building aluminum profiles, furniture, home decoration aluminum profiles and high-end industrial aluminum profiles products. At present, the company introduces the world's leading modern production technology, production technology and production equipment from the United States, Britain, Germany, Japan, Switzerland and other countries. At the same time, the introduction of Swiss Golden Horse spraying equipment, vertical automatic powder spraying production line, Japan Lanzhi automatic fluorocarbon spraying production line, ALMEX automatic electrophoretic painting production line, the United States Ason pouring thermal insulation profile production line, the United Kingdom ARUN METALSCAN direct reading spectrometer and other international high-end production equipment and surface treatment equipment, as well as advanced raw and auxiliary materials and aluminum profiles experimental testing and product inspection and other equipment, the production capacity of aluminum profiles exceeds 120kt/a.

Production capacity 70kt/an of Guangdong Guangshan Aluminum Group Co., Ltd.

Guangzhou Aluminum Group Co., Ltd. was founded in 1993, is a collection of bauxite mining, alumina production and aluminum deep product research and development, production and processing, trade and sales, aluminum curtain wall door and window production and engineering installation in one of the aluminum enterprises and diversified investment and development of large-scale enterprise group. The company has proven bauxite resources of more than 200 million tons, with an annual output of 2 million tons of ore and 1.3 million tons of alumina. Aluminum profile processing system has 12 extrusion production lines, 2 surface treatment production lines, 2 thermal insulation broken bridge composite processing lines, production capacity 70kt/a.

Production capacity 60kt/an of Guangdong Yinghui Aluminum profile Co., Ltd.

Yinghui Aluminum profile was established in Foshan, Guangdong Province in 2006, is a comprehensive aluminum profile production enterprise integrating R & D, production and sales of aluminum alloy profiles, doors and windows. The company now has two brands of "Hehui" aluminum alloy profiles and "Hilo" door and window system, and has complete production lines from aluminum alloy melting and casting, mold manufacturing, extrusion, surface treatment and deep processing, among which, there are 3 melting and casting lines, 5 melting furnaces, 20 6MN-18MN extrusion production lines, 1 horizontal oxidation production line, 2 horizontal electrophoresis production lines and 2 horizontal powder spraying production lines, with a comprehensive production capacity of 60kt/a.

Production capacity 120kt/an of Shandong Junglin Aluminum Technology Co., Ltd.

Jungle Aluminum Technology (Shandong) Co., Ltd. completed its asset and business restructuring at the end of April 2020, and Anhui Conch Group became a major shareholder of the company. Jungle Aluminum is a comprehensive company specializing in high-end industrial aluminum alloy profile production and lightweight equipment R & D and manufacturing. As a domestic enterprise specializing in the R & D and manufacture of high-end industrial aluminum profiles and lightweight equipment, Jungle Aluminum currently has 15 aluminum extrusion production lines, 8 aluminum alloy automatic welding production lines, 6 large five-axis CNC machining centers and other advanced production and processing equipment. The leading products include aluminum alloy rail transit body materials and components, lightweight commercial vehicles, auto parts, special ships, aluminum structure engineering, building formwork and other fields. it is the main supplier of China Railway Corporation, China CIMC, JD.com Logistics, Shun Feng Express, Yunda Express, France Alstom, Bombardier, Denmark Maersk and other well-known enterprises at home and abroad. Is the domestic high-end industrial aluminum and deep processing leading enterprises.

Production capacity 50kt/an of Jiangsu Yongzhen Technology (Changzhou) Co., Ltd.

Yongzhen Technology (Changzhou) Co., Ltd., founded in 2018, is a leading manufacturer of aluminum profiles for solar frames in China. Based on Yingkou Wynn Co., Ltd and Yongzhen Technology (Suzhou) Co., Ltd., the company is a new aluminum enterprise specializing in the production of solar frames in order to further expand and optimize the company's product structure and meet market demand. The project has 10 automatic aluminum alloy extrusion production lines, as well as aluminum alloy melting and casting, mold manufacturing, surface treatment and other supporting production lines, the project can achieve the annual output of 10GW solar frame.

Capacity 160kt/an of Sichuan Samsung New material Technology Co., Ltd.

Samsung Technology, founded in 1998, located in Guanghan City, Sichuan Province, is a large enterprise engaged in the research, development, production and sales of aluminum alloy profiles, with more than 20 6MN-70MN extrusion production lines, four 25t regenerative aluminum melting furnaces, a 5t regenerative aluminum melting furnace, a 35t homogenization furnace and various auxiliary equipment. In terms of surface treatment, it has 1 oxidation electrophoresis production line, 2 Swiss Golden Horse spray Gun system Vertical Powder spraying production Line, 2 Swiss Golden Horse spray Gun system horizontal Powder spraying production Line, 1 Japanese Orchid spray Gun system horizontal Fluorocarbon paint spraying production Line, 4 thermal insulation production lines, 1 glue injection thermal insulation production line and 2 wood grain transfer production lines. At present, the company has a comprehensive processing capacity of nearly 160kt/an aluminum profiles.

Capacity 100kt/an of Fujian Xiangxin Co., Ltd.

Xiangxin Co., Ltd. is located in Fuzhou, founded in 2002, with 22 extrusion and forging lines and production capacity of 100kt.

Capacity 50kt/an of Jiangsu Peixian Zhonglun Photovoltaic Co., Ltd.

Zhonglun Photovoltaic was founded in 2017, formerly known as Jiangsu Ward Aluminum Co., Ltd., mainly produces solar photovoltaic aluminum frame long wood, with 9 extruders, 4 aging furnaces, 3 sandblasting machines and 8 oxidation lines. In 2021, 4-5 fully automatic frame production lines and some extruders will be added, and the total production capacity will reach 50kt/a.

Production capacity 50kt/an of Jiangyin Fului Metal Technology Co., Ltd.

Jiangyin Fourui was founded in 2012, specializing in the development and operation of high-end aluminum application products such as solar module aluminum frame, photovoltaic system bracket, environmental recycling aluminum tray, new energy electric logistics vehicle aluminum carriage, new energy electric vehicle lightweight accessories and so on. The company has more than 30 production lines, as well as more than 140 sets of high-performance professional equipment, such as drilling machines, CNC milling machines, machining centers, presses, precision grinders, wire cutting machines, electric spark machines, arc welders, cutting machines, plasma cutting machines, grinders and so on. At present, the company's export business accounts for more than 90%. In 2020, the company's solar module aluminum frame production and sales of more than 10 million sets.

Capacity 80kt/an of Shandong Dongcheng Aluminum Co., Ltd.

Shandong Dongcheng Aluminum Co., Ltd. was founded in 2002, located in Linqu County, Shandong Province, is a collection of high-grade system doors and windows, hardware accessories, curtain wall R & D and design, high-grade environmental protection and energy-saving building aluminum profiles, high-end industrial aluminum profiles production in one of the large-scale comprehensive specialized enterprises.

Dongcheng Aluminum has mold design, manufacturing and extrusion, complete surface treatment production line and a full set of equipment, 18 6.6MN-26MN extrusion production lines, one domestic advanced Anbang vertical powder spraying line, and the introduction of foreign advanced CNC processing center for doors and windows and Germany 4.0digital processing technology. During the 14th five-year Plan period, the company plans to invest 500 million yuan to build 20 extrusion lines, 2 vertical spraying lines and 4 horizontal spraying lines, so that the production capacity of profiles will reach 80kt, and more than 30 enterprises of 4.0 digital system doors and windows will be established nationwide, with 150000 sets of doors and windows / a.

Capacity 50kt/an of Shandong Weifang Guanghua Aluminum Co., Ltd.

Founded in 2003, Weifang Guanghua aluminum co., ltd. has 28 6MN-26MN extrusion production lines, which can produce all kinds of aluminum profiles, such as building profiles, decorative profiles, industrial profiles and so on Among them, decorative profiles have formed moving doors, sanitary ware, window decoration and other types, and have accounted for 50% of the company's total output. In 2020, the production and sales volume of the company was 48kt, with a sales income of 900 million yuan, including the export of 12kt.

Production capacity 50kt/an of Shandong Zhonghao Aluminum Group Co., Ltd.

Established in 2002, Shandong Zhonghao Aluminum Group Co., Ltd. is a large-scale production enterprise specializing in construction, decoration and industrial aluminum alloy profiles. The company has casting-mold design and manufacturing-extrusion complete surface treatment production line, there are 20 aluminum profile production lines, production capacity of 50kt/a. The company's current products are mainly the production of construction aluminum profiles, supplemented by industrial aluminum profiles.

Production capacity 62kt/an of Shandong Linqu Milan window system door window Curtain Wall Co., Ltd.

Shandong Milan window system door window Curtain Wall Co., Ltd., invested by Beijing Milan window Energy Saving Building Materials Co., Ltd., is a professional system door window curtain wall enterprise integrating R & D, design, production, sales, installation and service. The company specializes in the production of aluminum-clad wood doors and windows, aluminum-clad wood curtain wall, aluminum-clad wood sunshine room and other products. Milan window introduces the latest German Cantourui 125vario wood window processing center, Europe's advanced BMG 511 CNC sunshine room and curtain wall processing center, and at the same time, it also introduces the Italian MAKOR intelligent horizontal water-based paint spraying line, forming a complete intelligent production line and reaching the domestic leading production technology level of aluminum-clad wood doors and windows. After the completion of the company, it will become the production and processing base of aluminum-clad wood products in the key system in northern China, with an annual output of 600000 m2 of aluminum-clad wood doors and windows, 150000 m2 of system aluminum-clad wood curtain wall and 300 sets of aluminum-clad wood sunshine room. The company introduces the domestic advanced system automatic processing center of broken bridge aluminum doors and windows, forming an annual output system of 400000 square meters of broken bridge aluminum doors and windows.

Capacity 100kt/an of Yunnan Sanyuan Delong Aluminum Co., Ltd.

Sanyuan Delong aluminum co., ltd. is located in Nanhaizi industrial park, Qujing county, with a total production capacity of 100 kt, and the first phase production capacity of 50 kt, which was put into production in October 2014

Production capacity 50kt/an of Zhejiang Dingfeng Aluminum Co., Ltd.

Zhejiang Dingfeng Aluminum Co., Ltd. was founded in 2004 with a production capacity of 50kt. It has 22 extruders, 3 anodizing / electrophoretic painting production lines, 2 powder spraying production lines, 1 chlorocarbon spraying production line, 3 broken bridge thermal insulation production lines, 1 glue injection production line, 1 wood grain transfer production line, 6 solar aluminum production lines and 12 Prady machining centers. The company specializes in the production of building doors and windows / curtain wall energy-saving profiles, air conditioning profiles, shower room profiles, textile accessories profiles, solar accessories profiles and other architectural aluminum alloy profiles and industrial aluminum alloy profiles.

Production capacity 50kt/an of Shandong Fasheng Aluminum Co., Ltd.

Fasheng Aluminum Co., Ltd. was put into production in 2015, specializing in the production of automotive aluminum, such as bumpers, roof accessories, etc., the project investment of 1.2 billion yuan, the first phase production capacity of 50kt/a.

Capacity 150kt/an of Henan Huazhong Aluminum Co., Ltd.

Huazhong Aluminum Co., Ltd. is located in Yichuan City, with an investment of 2.3 billion yuan and a production capacity of 150 kt. Huazhong Aluminum Co., Ltd. has a 150MN double-action forward extruder, a 75MN forward extruder, a 25MN double-action forward extruder and a reverse extruder, and a domestic max (25m) vertical quenching furnace. The aging furnace and drawing machine are one of the largest, and the casting machine can cast Φ 850mm ingots.

Production capacity 100kt/an of Fenghua Aluminum Co., Ltd.

Fenghua Aluminum is located in Huolingol, Inner Mongolia, invested 1 billion yuan by Shenyang Liaoshen Enterprise Group and put into production in October 2014. it has 100kt/an aluminum profile and PVC pipe.

Production capacity 80kt/an of Jiangsu Asia-Pacific Light Alloy Technology Co., Ltd.

Asia-Pacific Light Alloy Technology Co., Ltd. is located in Wuxi New District, producing high-performance extruded materials, covering an area of 143400m2, which was put into production in 2016 with a production capacity of 80kt/a.

Capacity 100kt/an of Shanxi Branch of Western Airlines Aluminium Co., Ltd.

Xihang Aluminum Shanxi Branch is located in Hejin Industrial Park, Shanxi Province, with a total investment of 1 billion yuan. It is jointly organized and implemented by Jindu Aluminum Co., Ltd. and Xihang Aluminum Co., Ltd. to produce civil aluminum profiles and die castings, which was put into production in March 2014 with a production capacity of 100kt/a.

Production capacity 50kt/an of Jingchang Aluminum Co., Ltd.

Jingchang Aluminum Co., Ltd. is located in Chengnan Industrial Zone, Wuhe County, Anhui Province. it was put into production in July 2014 with a total investment of 300 million yuan and a production capacity of 50 kt, with 10 extrusion lines and 2 spraying lines.

Capacity 52kt/an of Fujian Gumei Metal Co., Ltd.

52kt/an aluminum profile production base of Fujian Gumei Metal Co., Ltd. was put into production in August 2013. The company was founded in 1995, is a main aluminum alloy, stainless steel pipe, plate, set R & D and production, processing and sales as one of the enterprises.

Production capacity 50kt/an of Jiangsu Zhenxing Aluminum Co., Ltd.

Jiangsu Zhenxing Aluminum porous microchannel flat Tube Project, invested by Shanghai Zhenxing Group, with a total investment of 1 billion yuan, was officially put into production in June 2014. it is mainly engaged in the production and sales of porous microchannel aluminum tubes and high-grade aluminum profile products. The product of this project has the characteristics of environmental protection, energy saving, efficiency and cost reduction, and can replace the old air-conditioning heat exchanger which has caused harm to the environment in the past and has a production capacity of 50kt/a.

Capacity 60kt/an of Jiangsu Wujiang Dongfang Aluminum Co., Ltd.

Wujiang Dongfang Aluminum Co., Ltd. was founded in 1999, with 25 international advanced aluminum profile production lines, including melting and casting, mold, extrusion, artificial aging, mechanical polishing, coloring oxidation, electrophoretic painting, powder spraying as one, mainly produces all kinds of aluminum alloy doors, windows, curtain walls, broken bridge thermal insulation aluminum profiles and industrial aluminum profiles, a total of more than 100 series, more than 3000 varieties, production capacity 60kt/a.

Capacity 60kt/an of Henan Zhongduo Aluminum Technology Co., Ltd.

Zhongduo Aluminum Technology Co., Ltd. is located in Zhumadian City, Henan Province, with a total investment of 1 billion yuan and 12 extrusion lines to produce special aluminum profiles with high strength, high toughness and corrosion resistance.

Capacity 50kt/an of Ningbo Dejing Aluminum Technology Co., Ltd.

Ningbo Dejing Aluminum Technology Co., Ltd. is composed of three production projects: the first is the production of various brands and specifications of high-strength industrial aluminum alloy materials, and the second is the forging of various mechanical parts. Third, precision processing of various mechanical parts (the company's leading products are mainly large substation high-voltage switch parts, auto parts and high-speed car parts). The company now has one assembly line for 50MN, 18MN, 13.5MN, 12.5MN, 6.3MN and 5MN extruders, two quenching furnaces, four 10t artificial aging furnaces, one 15t melting furnace and one 10t melting furnace. Equipped with 1 permanent magnet mixer, 1 16MN hydraulic forging machine, 1 63MN forging machine, 1 400t casting machine, 1 160t casting machine, 1 1.2MN forging machine: CNC machining center, CNC lathe, vertical drilling machine and other equipment more than 50 sets, specializing in the production of high-strength new aluminum alloy materials, aluminum alloy product forging and various mechanical parts processing.

Large extruder

Generally speaking, the extruder with extrusion pressure ≥ 45MN is called large extruder, the extruder with extrusion pressure ≥ 80MN~150MN is called heavy extruder, and the extruder with extrusion pressure ≥ 160MN is called super extruder. More than 75% of the large extruders are used in the production of industrial extrusion materials, and the 50MN extruders for building aluminum extrusion materials can be satisfied. Generally speaking, one 50MN extruder is sufficient for every 600kt/a construction aluminum production capacity.

In 1956, Northeast Light Alloy Co., Ltd. (former Harbin Aluminum processing Plant) was put into production, and its extrusion workshop has 9 6MN~50MN hydraulic presses imported from abroad. Among them, 50MN hydraulic press was the largest in Asia at that time, and its tube, bar, shape and wire production capacity totaled 6kt/a. In 1960, another 50MN hydraulic press was introduced into our country to produce extruded forging billet for forging workshop. In 1970, China Southwest Aluminum (Group) Co., Ltd. (former Southwest Aluminum processing Plant) was completed and put into production. The hydraulic press for forging billet and aluminum in the forging workshop of the company is designed and manufactured by the first heavy machinery factory in China. In 1972, China introduced seven hydraulic presses for extruding aluminum from Ubu Industrial Co., Ltd., Japan. Since then, no matter they are imported or designed and manufactured by ourselves, the extruders in China's aluminum industry are all separate oil extruders.

As of 2021, there are about 240 large extruders in the global aluminum industry, of which China has 180, accounting for about 70.8%; the United States has 25, accounting for about 10.6%. Among the large extruders in China, except for 3 hydraulic presses, the other ones are hydraulic presses, 34 of which are imported from abroad, of which 25 are imported from Germany's Simarmel Company, accounting for about 73.53% of the total.

The period from 1996 to 2018 is the period of great development of aluminum extrusion industry in China. During this period, about 140 large extruders were completed and put into production in China, of which 28 were imported from abroad, while 112 were made by Taiyuan heavy Machinery Manufacturing Co., Ltd.

Production capacity and Inner diameter of Extruder

The production capacity of large extruder depends on a series of factors, such as installation level, product structure, worker quality, management ability and so on, so the calculation value can only be determined according to experience. The author calculates the production capacity of large extruder according to the production performance of Japanese light metal company (KOK) and the author's 63 years experience in aluminum processing. KOK has only one 100MN (Design 95MN) extruder built in 1971, which is mainly used to produce large profiles extruded by 100MN extruders for high-speed railway vehicles and other industries in Japan. There are only 1 100MN, 3 75MN and 6 50MN large extruders in Japan. In the past 50 years, the maximum actual output of 100MN has reached 10.5kt/a. The extruded material produced by this machine meets the needs of Japanese high-speed rail vehicles (about 700 vehicles per year) and other industries for large extrusion aluminum.

The manufacture of rail vehicles requires not only large profiles produced by 100MN extruders, but also small and medium-sized profiles produced by smaller large extruders and small and medium-sized extruders. Taking the production of rail vehicle profiles as an example, under the conditions of equipment, extrusion technology and management of China's current aluminum extrusion industry, the calculated production capacity of large extruders is shown in Table 1.

Table 1 calculation coefficient of production capacity of aluminum extruder

Production capacity (t) = extrusion force of extruder (tf or US tf) × correction factor)

For example, the production capacity of a 100MN extruder for producing large profiles for rail vehicles is only 9kt, and if all conditions are in the best condition, the actual output of large profiles for integrated rail vehicles can not exceed 11kt, but here it refers to the finished product, not the passing quantity.

It should be emphasized here that the design production capacity of the extruder is calculated according to the set product category and its structure, and is calculated according to the proportion of pipe, bar and profile, so there will be a great difference between the actual output and the design capacity. for example, a domestic factory has an imported 150MN forward extruder with a design production capacity of 22.5 kt / a, and if it specializes in the production of rail vehicle profiles, the production capacity will be halved.

The inner diameter of the extrusion cylinder refers to the diameter of the ingot in the extrusion tube, not the external dimension of the extrusion cylinder. Extrusion cylinder is an important tool for extrusion operation, which has a multi-layer structure, and its lining is not only one of the main consumption components, but also one of the important factors affecting product quality. The inner diameter of the inner lining is the basis for determining the working diameter of the die support and the extrusion pad. When the diameter difference between the working and non-working parts of the lining is greater than 0.4mm or longitudinal scratches are longer than 5mm, or when peeling or bubbles appear on the surface of the extruded product, the lining should be replaced.

The heating of the extrusion tube should be uniform, and the maximum longitudinal temperature difference of the traditional extrusion tube during continuous production can reach 60 ℃ ~ 100 ℃. At present, after adopting advanced heating technology, the maximum temperature difference can be controlled at about 10 ℃. The inner diameter of the extrusion cylinder of a large extruder in China is shown in Table 2.

Table 2 Inner diameter of extruder cylinder of large extruder in China

Technical parameters of extruder

The main results are as follows: (1) when supplying the ingot, the fixed extrusion pad does not leave the extrusion cylinder, and the extrusion rod can accurately push the ingot on the extrusion die in the center of the extrusion cylinder, so as to achieve the effect of sequential upsetting and sequential exhaust from front to back, which is easy to remove the air and reduce the exhaust time. It also reduces the bubbles involved in the air. (2) the non-extrusion time (empty period) is shortened. The fixed cycle time required for the movement of each auxiliary mechanism is calculated from the completion of one ingot to the pressure upsetting of the next billet, the total non-extrusion time is reduced by about 15%. At the same time, cancel the gasket circulation system, shorten the reactive power operation time, reduce the power consumption of the production line, and improve the productivity. (3) the short-stroke extruder can increase the length of the extrusion ingot by 20% to 80%, or even double it. (4) shortening the stroke can reduce the length of the fuselage, reduce the quality of the equipment and reduce the investment cost. The advantages of the short-stroke extruder can be seen from the comparison of the parameters in Table 3.

Table 3 comparison of parameters between short stroke and standard extruder

The main technical parameters of the extruders imported from China are shown in tables 4 and 5, and the technical parameters of typical domestic extruders are shown in tables 6 and 7.

Table 4 main parameters of short-stroke pre-loading extruder for German West Mark (SMS) Group Meier Co., Ltd.

Table 5 main technical parameters of extruder of German West Mark (SMS) Group Meier Co., Ltd.

Table 6 Technical parameters of single-acting short-stroke extruder in Taiyuan heavy Machinery Manufacturing Co., Ltd.

Table 7 Technical parameters of double-acting extruder of Taiyuan heavy Machinery Manufacturing Co., Ltd.

Japanese KOK company 95MN extruder was put into production in 1971. It was the largest and most advanced hydraulic press in the world at that time. Even today it still ranks among the world's advanced level. It is designed by Schloman Company of Germany (today's Meier Company) and manufactured by Japan's Ishikawa sowing and Milling heavy Industry Company (IHI). The machine has the characteristics of novel design, compact structure and complete functions, which can be extruded with a circular extrusion cylinder or produced with a flat extrusion cylinder. Its hydraulic system, electric control system, speed control system and operating system have reached a very high level, and PLC (Programmable Logic Control, programmable logic control has been realized. Extrusion with fixed extrusion pad, it is equipped with automatic lubrication system, three-station quick die changing system, automatic centering system, liquid nitrogen and gas nitrogen cold mold system, traction device, precision water quenching and gas quenching system, automatic stretching straightener and roll straightener, automatic sawing machine and transverse transportation system, cold bed and so on.

Reverse extrusion and reverse extruder

Reverse extrusion

In the past 30 years, the reverse extrusion of aluminum alloy, especially the reverse extrusion of pipe, has made great progress. The characteristic of reverse extrusion is that in the process of extrusion, there is no relative motion between the casting and the extrusion cylinder, that is, the movement direction of the extrusion cylinder is consistent with the flow direction of the product, thus greatly reducing the friction deformation zone near the hole die, the required extrusion pressure is small, the extrusion speed is fast, the metal flow is uniform, the microstructure and properties of the products are uniform, the defects of coarse grain ring can be reduced or even eliminated, and the geometric waste can be reduced.

As the surface of the ingot will flow into the surface of the product during reverse extrusion, in order to ensure a good surface of the product, the surface of the ingot should be processed, that is, hot peeling or cart must be carried out. Hot peeling is carried out before extrusion, and the heated ingot is peeled off the skin of 4mm~10mm on the peeling machine. The hollow ingot peeling machine should have an accurate alignment system, otherwise the ingot after peeling will have serious eccentricity and the product size can not be guaranteed. The wall thickness deviation of the hollow ingot after peeling should be less than 1.0mm, and the precision pipe should not be greater than 0.5mm when extruding. In order to ensure the deviation of the wall thickness of the ingot, the surface layer can be removed by turning instead of peeling. For this reason, a set of turning-boring device can be set up on the extrusion production line.

Although the reverse extrusion method has advantages, it also has many disadvantages, and its main disadvantages are as follows: it is necessary to use an extruder with a long stroke extruder, the surface quality of the product is poor, and the specification and size of the product is limited, compared with the positive extruder with the same extrusion pressure. its specification and size is much smaller, in addition, it is difficult to separate the residue, so it has not been widely used in industrial production, but in recent years, due to the development of production technology and the improvement of equipment structure, The reverse extrusion method also has more applications in the actual production.

Reverse extruder in China

In 1870, the British first used reverse extrusion to produce lead tubes, which were later used to extrude copper and tin, and in the 1920s to extrude aluminum. As there are some technical difficulties in this method, it has not made much achievement. However, due to the progress of technology, the scientific and technological circles have been very interested in this method since the 1970s. In particular, this method has unique advantages in extruding some aluminum alloy materials used in the field of high strength aerospace and structural materials of transportation equipment, so it has been greatly developed, especially in our country. China has become the world's largest aluminum alloy reverse extrusion country, with the world's largest 150MN forward and backward extruders and the world's largest reverse extruders, with a total of 67 sets in 2021; the world's most complete and complete reverse extrusion machine spectrum, the smallest is only 7.5mn, the largest is as high as 150mn; the installation level is high, 14 sets imported from Mel Company, accounting for about 21% of the total.

Giant Light Alloy Technology (Kunshan) Co., Ltd.

(Giant Light Metal (Kunshan) Technology Co,Ltd. (Kunshan) Co., Ltd., located in Kunshan City, Jiangsu Province, is a wholly owned subsidiary of Taiwan Giant Co., Ltd., which was established in 1972. In 1992, Giant China Company was established in Kunshan, Jiangsu Province, opening the division of labor system between the two sides of the huge group. In 1997, Giant Light Alloy Company was established in Kunshan to produce aluminum alloy tubes and aluminum alloy rings. It set up a factory in Chengdu in 2004, established Giant Electric vehicle (Kunshan) Co., Ltd in 2006, established Tianjin Factory in 2007, and established a new factory in Kunshan in 2010. In December 2017, Giant Light Alloy Technology (Kunshan) Co., Ltd. acquired Dingmg (Kunshan) New material Technology Co., Ltd. At present, there are 41 extruders (21 in the opposite direction) with a production capacity of 50 kt, specially producing all kinds of high-grade extruded aluminum for Giant Group, but mainly for Giant bicycle family. Giant Group leads the global production and sales of advanced bicycles. Giant Light Alloy Technology (Kunshan) Co., Ltd. is a producer of high-precision extruded aluminum used in bicycles and other fields.

At present, Giant produces bicycle industry products including rims, shock-proof front tubes, guide profiles, and high-strength aluminum alloy frames containing trace amounts of Sc (about 0.35%). The company specializes in producing all kinds of bicycle rings for road, mountain, folding and BMX (bicycle motocross) bicycle cross-country racing, and its own brands "AMIGO" and "GLMIMS" sell well all over the world. It has set up production plants and sales centers in dozens of regions and countries around the world, a number of wheel rim innovation technologies have been patented, and a number of new products have been recognized as high-tech products in Jiangsu Province.

Giant has become a professional manufacturer of high-strength aluminum alloy seamless tubes and profiles, which can produce 7050 alloy seamless tubes with max outer diameter 145mm Magi max inner diameter 135mm Magi min outer diameter 16mm Magi min inner diameter 13.4mm; 7050 alloy profiles with the largest external circle diameter 280mm and the widest 420mm. After hard anodizing treatment, this kind of pipe achieves a perfect combination of high strength, high plasticity, high corrosion resistance and high wear resistance.

The aluminum alloys for automotive industry, bicycle industry, medical devices, sports equipment, children's carts, aerospace tubes / profiles produced by Giant are: 6061, 7005, 6063, 3003, 2024, 2014, 7075, 7050, G706, G7003, G603, G609, 7116, 6066 and so on. The alloy with the letter "G" is an alloy developed by Giant itself.

(motorcycle rim, rims produced by Giant are made of carbon fiber reinforced aluminum alloy composites and have been certified by the DOT (Department of Transport, Department of Transportation of the United States. It has a cross section width of 41mm to 158mm and a diameter of 253.2mm~584.7mm. The advantages of this composite aluminum alloy rim are: beautiful appearance, light weight and high strength, 15% 30% lighter than all aluminum alloy rims, and the overall performance is improved by 15% to 30%.

The auto parts produced by Giant include air conditioning flanges and brackets, damping systems, steering systems, flanges and condensing systems, air conditioning lines, air conditioning joints and flanges, braking systems, skylight rails, engine accessories, rail transit slides, and control arms. These aluminum alloy parts have light weight, low hydrogen content (0.12mL/100g~0.14mL/100g), excellent corrosion resistance and formability, etc. The aluminum alloys used are 1070, 2014, 2024, 2011, 2A12, 3003, 3004, 3103, 3A21, 5052, 5056, 5005, 6060, 6063, 6005, 6082, 6061, G609, G606, 6463, 6013, 7003, 7005, 7046, 7116, 7050, 7075, 7055, 7020 and so on.

Giant can provide users with a variety of heat dissipation parts, which are widely used in various fields, such as communication industry (base station / antenna), rail transit (urban rail, high-speed rail, bullet train), LED (street lights, tunnel lights, indoor lighting, courtyard lights, explosion-proof lights, etc.), solar energy, motors, rectifiers, office equipment, home appliances and other industries.

Aluminum alloy containing scandium (≤ 0.35%) has been applied in China, Russia, the United States and other countries. 7005 alloy and 7046 alloy containing trace Sc developed by Giant have uniform fine grain structure, grain diameter ≤ 10; tested in NaCl-HCl solution for 24 hours, the corrosion layer thickness of scandium-containing alloy is the smallest, followed by 0.150mm/7005 alloy, 0.082mm/7046 alloy and 0.037mm/ alloy containing Sc. The weldability of aluminum alloy containing Sc is much better than that of 7005 alloy and 7046 alloy without scandium. Advanced technology

Giant uses a number of advanced technologies in reverse extrusion of tubes and profiles.

Electromagnetic purification

The electromagnetic purification system of aluminum melt developed by Giant and Shanghai Jiaotong University has achieved good results. This method uses the action of external electromagnetic force field to promote the separation of inclusions and combines the ability of ceramic separator to capture inclusions to achieve efficient and stable removal of micro-inclusions, and because the driving force of electromagnetic separation of inclusions mainly depends on the difference in electrical conductivity between them and the melt, but has nothing to do with their density, chemical composition, state (solid, liquid or gaseous), etc., Electromagnetic purification has a unique advantage in removing inclusions in aluminum melt. This is because the oxide inclusions in the aluminum melt are easy to be suspended in the melt because of their large surface area, irregular shape and possible adsorption of gases, which is similar to the density of the aluminum melt, so it is difficult to remove them by natural ups and downs or centrifugation. After using plate Filter + electromagnetic purification, the content of inclusions will be further reduced, especially the amount of inclusions less than 10 μ m.

The effects of several purification methods are shown in Table 8.

Table 8 comparison of purification methods for aluminum melt

After the aluminum melt is deeply purified by the electromagnetic purification system, all the non-metallic inclusions in the melt greater than 20 μ m are removed, the non-metallic inclusions less than 20 μ m are also removed by 80%, and the content of non-metallic inclusions with a particle size less than 10 μ m is also reduced to about 0.02%. The subsequent processing properties, mechanical properties, integrity and appearance quality of the finished products are ensured. At the same time, the automatic detection and control technology of process parameters are introduced to realize the real-time monitoring and control of various parameters, which significantly improves the level of intelligence and automation.

Air knife casting technology

Giant used air knife technology and electromagnetic knife technology for the first time in the world when casting Φ 800mm magnesium alloy and aluminum alloy ingots. This low frequency electromagnetic semi-continuous casting technology is a new casting process developed in recent years. This technology uses the high permeability of low frequency magnetic field in the melt and controls the distribution of flow field and temperature in the melt in a wide range, so as to significantly improve the quality of ingots.

When casting the ingot workpiece, the surface temperature of the casting is low, and the surface temperature of the casting rises after using the air knife technology. In other words, the temperature gradient along the casting direction and vertical casting direction decreases, that is, the stress and strain in the ingot decreases significantly. In addition, the application of air knife plays a more important role in restraining cracks.

The advantages of low frequency electromagnetic-air knife semi-continuous casting aluminum alloy and magnesium alloy ingots include significantly refining the microstructure of ingots, restraining cracks, restraining macrosegregation of alloy elements, purifying alloy structure, improving surface quality and so on.

During casting, the secondary cooling water on the surface of the ingot is removed, and the latent heat released during solidification of the alloy melt heats up the surface of the ingot, so that the surface of the ingot is self-regenerated at high temperature, and the ingot cools more slowly in the air, and the internal and external temperature difference becomes smaller. As a result, the internal stress of the ingot is greatly reduced, and the high strength aluminum alloy also has a high plasticity in this temperature range, so it can effectively restrain the occurrence of cold cracks.

Oil-gas lubricated casting

Oil-gas lubrication is an advanced casting technology for aluminum alloy round ingots. This method means that oil and gas pass through the porous graphite ring to form an oil-gas film between the mold and the metal. The existence of oil and gas film reduces the friction and heat transfer between the ingot and the crystal wall, so that the ingot has high surface and metallurgical properties.

Electromagnetic grain refinement technology

The electromagnetic grain refinement technology developed by Giant has been granted a patent, and its principle is that the solidification behavior of the melt is controlled by the high permeability of the low frequency magnetic field in the aluminum melt. When the melt is affected by electromagnetic force, forced convection occurs, which changes the solidification environment inside the melt, the internal temperature of the melt is basically the same or the difference is very small, and the liquid cavity becomes shallower and flattened. The temperature gradient on the cross section of the ingot decreases significantly, and the convection can also break the dendrite arm formed at the primary solidification shell and bring it into the liquid hole to increase the number of nucleation. The effect of magnetic field on solidification environment is to increase the nucleation number of melt during solidification and to obtain fine and uniform equiaxed structure of ingots. Forced convection caused by electromagnetic force can make solute distribution more uniform and reduce macrosegregation.

The basic features of the patented technology are significant refinement of alloy structure, inhibition of macrosegregation of alloy elements, improvement of surface quality, suppression of cracks, purification of melt inclusions and so on.

Mold liquid nitrogen cooling

Using liquid nitrogen to cool the die during extrusion is not a new technology, but it is not easy to make good use of it and stick to it. Its advantages are as follows: the cooling effect of liquid nitrogen is 3 times that of gas nitrogen, the extrusion speed can be increased by 50%, the output can be increased by 30%, the production running time can be increased by 100%, the die life can be prolonged by 50%, and the surface quality of the product is excellent.