The traditional titanium alloy has been developed to the extreme to improve its properties through alloying and microstructure optimization. only through composite strengthening can we break through the rut of traditional titanium alloy and make titanium alloy "play an important role" in more fields.
Baotou Jiatai Metal Technology Co., Ltd. (hereinafter referred to as Jiatai Metal) has produced the largest international size titanium matrix composite ingots with a diameter of 580mm and a weight of 1.5t. At the same time, the only diameter 0.05mm titanium alloy ultra-fine wire in China has been produced by self-developed equipment. This product relies on the international first and only in-situ rare earth oxide particle strengthening titanium alloy technology created by the State key Laboratory of Metal Matrix Composites of Shanghai Jiaotong University, as well as isothermal forging, precision casting and other technology. titanium matrix composites are produced.
It is reported that Jiatai Metal creatively put forward the technical route of using multi-component and multi-scale reinforcement to improve the properties of titanium alloy, designed a new in-situ process, and prepared high-performance rare earth modified titanium matrix composites with simple and low cost. The composition and properties are further optimized, and the key forming technical problems of isothermal forging and precision casting of high-performance rare earth modified titanium alloy components are solved.
In terms of production, Jiatai Metal is currently equipped with titanium alloy smelting, hot processing and other equipment. At the same time, the corresponding electrode pressing die, titanium alloy hot working die, extrusion, isothermal forging and wire drawing equipment were designed and configured, and a relatively complete titanium alloy smelting and processing system was constructed.
In terms of precision casting, Jiatai Metal cooperated with a domestic aerospace precision casting enterprise to prepare precision castings such as particle reinforced titanium alloy impeller and DD shell using industrial casting equipment. The components have been verified by users, especially the heat resistant particle reinforced titanium alloy impeller has withstood the test in a high temperature and complex environment, which significantly improves the performance of high-end equipment, and the complete set of equipment saves electricity by 10 million degrees per year. It has produced remarkable social benefits. At present, the transformation of the technological achievements has achieved positive benefits, with an output value of 4.37 million in 2020.
In addition, new computer simulation technologies such as finite element analysis are used to realize the simulation of isothermal forging process control, and isothermal forging dies and forging process parameters are designed effectively. high-performance rare earth reinforced titanium alloy forgings are prepared efficiently and at low cost to meet the design requirements of high-performance, high-reliability and low-cost aviation parts and provide components that can be produced industrially.
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