Noticias

The new industries such as energy conservation and environmental protection concept, electronic information industry, rural power grid transformation and automobile lightweight, the development of national defense military industry and the transformation from consumption demand to high-end and personalized, put forward higher requirements for the development of non-ferrous metals, service-oriented manufacturing and intensive processing technology, and pursue the maximization of resource utilization and optimization of performance. Non ferrous metals are widely used, but their development is limited due to the lack of mineral resources. Copper has excellent conductivity and heat conductivity. Although the conductivity of aluminum is only 3 / 5 of copper, the specific gravity is less than 1 / 3 of copper. The survey shows that the external dependence of copper minerals in China is more than 65%, while that of aluminum minerals is less than 45%. According to the "skin effect" in electric field theory and "Saint Venan principle" in elasticity, the metallurgical compatibility between copper and aluminum is used to realize the metallurgical combination of copper and aluminum by means of reasonable control of copper aluminum bonding. The aluminum to copper transition can be used as a substitute for copper, It is applied to the communication shielding, electric power and other industries, and achieves the purpose of "saving copper with aluminum". Therefore, the preparation technology and related theories of the copper aluminum layered composite have become the hot research topics.
 
Chalco aluminum adopts the casting and rolling composite process in the solid-liquid composite method. The high temperature of liquid metal not only ensures the mutual diffusion of copper and aluminum atoms in the interface layer, but also overcomes the shortcomings of the thick transition layer and low interface bonding strength. It realizes the high-strength metallurgical combination and wide production of copper and aluminum, and the process is relatively simple, stable and the equipment cost is low, It can adapt to large-scale continuous production. The aluminum to copper transition prepared by casting and rolling has excellent performance and obvious cost advantages, and has a broad prospect of industrialization.
 
Chalco aluminum adopts solid-liquid composite casting and rolling process, which has the characteristics of energy saving, high efficiency and economy. The aluminum ingot is melted into molten and cast on the copper plate, and the process flow is optimized, the production efficiency is improved and the production cost is reduced.