Copper aluminum composite strip is made from copper and aluminum as raw materials through copper aluminum composite technology. Therefore, copper aluminum composite strips not only have the beauty of copper, but also have the corrosion resistance and low cost properties of aluminum. They are widely used in industrial fields such as electronics, automobiles, energy, electrical appliances, petrochemicals, metallurgy, and machinery. As we all know, China is a country with more aluminum and less copper, facing both overcapacity in the aluminum industry and a shortage of copper resources. In industrial production, at least 60% of copper raw materials rely on imports. In order to solve the problem of copper resource shortage in industry, copper aluminum composite strips that can replace copper metal have emerged. The use of copper aluminum composite strips is of great significance for alleviating the situation of excessive aluminum and insufficient copper in China and resolving overcapacity in the aluminum industry.
After years of development, China's copper aluminum composite strip industry has achieved great success and has become one of the main producers and exporters of copper aluminum composite strips in the world. The production level, product quality, and economic benefits of copper aluminum composite strips in our country have been significantly improved, gradually achieving modern industrial goals.
The upstream of copper aluminum composite strip is mainly composed of copper and aluminum. Copper aluminum composite materials are mainly composed of aluminum core and copper cladding, with excellent copper conductivity, good corrosion resistance, low aluminum cost, and light weight. When used for high-frequency wires and high current conductive bars, the conductivity is almost the same as that of pure copper conductors.
The downstream industries of copper aluminum composite strips mainly include industries such as electronics, automobiles, energy, electrical appliances, petrochemicals, metallurgy, and machinery. Copper aluminum composite material is a new type of layered composite material that has developed in the power and industrial electrical industry in recent years. It is a high-performance composite conductor.
In recent years, Chinese steel companies have continuously strengthened their innovation awareness and increased their research investment in copper aluminum composite materials, but there is still a gap compared to some international steel companies. The independence, synergy, systematicity, stability, and continuity of technological innovation in the steel industry are still insufficient, and the supply of technology cannot fully meet the development needs of the industry. Some core technologies have not been mastered and have not been freed from the role of followers of key core technologies. Although the current localization rate of large-scale metallurgical equipment can reach over 90%, key and core technologies still rely on imports. Therefore, for a long time to come, Chinese steel companies still need to enhance their innovation awareness, strengthen their innovation systems and mechanisms, increase investment in research and development, and enhance their innovation capabilities.