"[live broadcast of aluminum summit] Analysis of hot topics such as aluminum inventory, aluminum price, alumina supply and demand, loss of aluminum enterprises, etc.
Aluminum alloy formwork has a history of more than ten years in China, and there are still some difficulties to be broken through in the process of use. In the "2019 (14th) Copper and Aluminum Summit-Aluminum Industry chain Summit Forum and Aluminum Industry Brand event" sponsored by SMM, Li Guofeng, general manager of Tongliao Yilong Technology Co., Ltd., explained the current situation and optimization suggestions of aluminum template for us in detail.
Development status of Aluminum Formwork in China
Birth of Aluminum Alloy template
Originated in the United States in the 1950s, it has developed into a mature building formwork system through the United States, Canada and other developed countries. After the extensive application of Mexico, South Korea, India and other emerging industrial countries, in 2008, the East China Sea International Project entered China, and has been used in China for more than ten years, forming an all-aluminum alloy formwork system to meet the domestic construction needs.
Development of Aluminum Alloy Formwork
Present situation of Aluminum Alloy Formwork
Since 2008, aluminum alloy formwork has a history of more than ten years in China. At present, it has accumulated a large number of construction experience and technical personnel, and gradually replaced the original.
Development of Aluminum Alloy Formwork
The development of aluminum alloy formwork is divided into four stages:
Phase I:
From 2008 to 2013, the emergence of "Technical Specification for Aluminum Alloy Formwork in Guangdong Province" DBJ 15-96-2013, J12376-2013, played a role in promoting the promotion of aluminum alloy formwork in China. It provides a reference basis for the use of aluminum alloy formwork in construction projects all over the country.
Phase II:
From 2013 to 2016, aluminum alloy formwork was used in demonstration projects in various places, accumulated a lot of construction experience, but also trained industrial personnel for the development of the industry.
Phase III:
From 2016 to now, "Technical Specification for Composite Aluminum Alloy Formwork" is the industry standard, numbered JGJ386-2016. It provides a strong guarantee for the use of aluminum alloy formwork in the whole country.
Difficulties to be broken through in the process of using Aluminum Formwork
Aluminum template processing requires a lot of labor, low production efficiency, the annual output of 100000 flat template factory production needs about 70 people. The average number of templates produced per person per day in the process of aluminum template processing is about 1 to 2 per person per day.
I. Design deviation of aluminum alloy formwork
1. Design deviation: mainly refers to the deviation between designs, there will be 1kg/ differences between different designs of the same project.
2. Material deviation: the selection of different cross-section profiles in the same project will also result in near-1kg/ differences.
II. Differences caused by processing flow and process of aluminum alloy formwork
III. Pre-assembly work is time-consuming and a waste of space
Each building requires about 80 to 100 workers, with a construction period of about 10 days and an area of 1000 square meters.
IV. Flow of aluminum alloy formwork projects
The repeated logistics movement in the project circulation will cause a great deal of waste of project resources. The flow procedure of aluminum alloy template project is as follows:
V. Analysis of aluminum alloy formwork project
About 15% of the aluminum templates in each project are aluminum alloy templates used at one time, the inability to enter the flow of the next project leads to cost waste, and about 30% of the templates need to be modified in the old version before they can be used. The failure of the template material causes some of the templates to be damaged in use and cannot be repaired.
In the project management of aluminum alloy formwork, if we can strictly control the process and strengthen the detail control, we can reduce the cost on the basis of the above.
Re-utilization of Aluminum Formwork to optimize Management as a whole
Finally, Li Guofeng pointed out that aluminum formwork should be used again to optimize management, and suggested the following:
First, the designer uses the standard template as far as possible when designing the template, reduces the special-shaped template.
Second, the designer's design work and strengthen the process review and process control, cancel the pre-assembly.
Third, adopt reasonable processing technology.
4. After one project is completed, the cleaning is completed during the packing process, and part of the standard board is shipped to the next project.
Fifth, strengthen the process management, reduce the number of misruns.
VI. One-time templates consider using other cheap materials instead.
