The development trend of copper conductor wire
In 2017, China's copper demand was 13,368,000 tons, accounting for 47% of the world's copper consumption.
In 2017, the copper demand in China's transportation sector was about 1.7 million tons, 56% of which was used in the manufacture of automotive electrical and non-electrical parts.
In 2018, China's new energy vehicle production increased by 60% year-on-year compared to 2017.
Requirements and technical specifications for high-performance copper alloy micro wires
High-performance copper alloy microwires are the key basic materials for the development of high-tech fields such as optoelectronics, microelectronics, aviation and aerospace, and they are also an important support for the development of advanced equipment and information technology in my country.
High-performance micro-line precision production technology is a shortcoming in China`s related industries. Technological breakthroughs can generate huge social value and economic benefits, which will help the next generation of LEDs, IC chips, large aircraft, and manned spaceflight development by leaps and bounds. A product market with a scale of tens of billions.
Wire drawing finishing
Wires after wire drawing often have certain tolerance requirements, such as: fine wires below 35AWG require tolerances not greater than ±3%, fine wires below 45AWG require tolerances not greater than ±5%, and so on. This puts forward higher requirements for wire drawing accuracy.
The deformation of the material through the drawing die is uniform in an ideal state, but the material will produce additional shear deformation at the entrance. This non-uniform deformation will not cause the diameter of the material to decrease, but it will affect the overall plastic deformation. When the geometric parameters of the die are unreasonable, most of the deformation is non-uniform deformation, and the entrance cone angle of the drawing die must be reduced and the compression rate increased.
Localization of high-performance micro wires
High-performance copper alloy material products are among the key products in the 13th Five-Year Development Plan of China`s New Materials Industry. According to the national strategic material development goals of the “13th Five-Year Plan”, by the end of the “Thirteenth Five-Year Plan”, there are more than 100 key products urgently needed for China`s economic development. Strategic materials should be fully localized, and the comprehensive support capability of key strategic materials should exceed 70%.
The volume of China's copper processing industry accounts for 60% of the world's production capacity, but high-end products still mainly rely on imports. At present, the country has not yet fully solved the large-length, continuous, and batch preparation technology of ultra-pure alloy billets.
Ultra-fine wire drawing technology and ultra-thin precision rolling technology must rely on advanced equipment to achieve, while adopting various advanced control methods to achieve the predetermined processing quality and achieve the purpose of efficient and low-cost production.