On July 5th, the 2 series high-strength and high-toughness aluminum alloy round cast rod with a diameter of 1400 mm, the largest specification in China, was successfully rolled off the production line in the XJZH Light Alloy Technology Group Industrial Park. The overall performance of the product has a low-magnification grain size of level 2, leading the industry. This product will be an important application blank for the ring forging parts of the new model launch vehicle in the future.
1400mm diameter high-strength and high-toughness aluminum alloy round cast rods are coming out
The aerospace industry is a national-level strategic high-tech industry in China. In the 1990s, XJZH integrated into the aerospace industry supply chain system with a high sense of historical mission and social responsibility, providing long-term supply of refined aluminum and alloy products, ensuring aerospace raw materials Lightweight applications. With the implementation of China's aerospace major science and technology project strategy, the development of large aluminum alloy ring forged parts as the core component of the launch vehicle tank has become particularly urgent.
At the end of 2018, relying on the advanced aluminum alloy melting and casting technology of China YY Research Metal Composite Technology Co., Ltd. and the advantages of XJZH high-purity aluminum industry, they jointly developed the 2 series and 7 series large-scale high-strength and high-toughness used in the field of major equipment manufacturing in the country. Aluminum alloy cast rod products. Up to now, XJZH can stably produce cast rod products with different specifications from 90 mm to 880 mm in diameter, 2219, 7050 and other alloy grades, and the overall low-magnification grain size has reached above level 1, and some related products have been replaced by imports. It has made outstanding contributions to the independent and controllable industrial chain and supply chain.
It is reported that the successful trial-produced high-strength and high-toughness aluminum alloy round cast rod with a diameter of 1400 mm, the largest in China, has the characteristics of high specific strength, good mechanical properties at low and high temperatures, high fracture toughness, and good stress corrosion resistance. It is suitable for high temperature 315 Structural parts and high-strength welded parts that work at ℃. This marks the gradual expansion of XJZH's layout in the field of advanced structural materials, and the production process of high-alloyed products has reached the international leading level, laying a solid technical foundation for expanding the development space of the aerospace industry and improving the overall level of aerospace science and technology.
XJZH CTO Chen Changke said, “The project of'development of super large aluminum alloy casting billets for aerospace use' in cooperation between XJZH and China YY Alloy Technology Group represents the highest level of China's large-scale aluminum alloy rod casting, forging, heat treatment and other processes. This The 2219 aluminum alloy with a diameter of 1400 mm developed by the project is used as the support aluminum for the country's major technical equipment.