Preparation method of high conductive aluminum alloy plate belt

Abstract

The invention belongs to the technical field of aluminum alloy manufacturing and relates to a preparation method of a high conductive aluminum alloy plate belt. An aluminum alloy ingot is prepared from the following compositions in percentage by mass: less than or equal to 0.15% of Si, less than or equal to 0.20% of Fe, 0.3-0.5% of Cu, less than or equal to 0.01% Mn, less than or equal to 0.02% ofMg, less than or equal to 0.01% of Cr, less than or equal to 0.03% of Zn, 0.03-0.05% of Er, 0.008-0.015% of Ti, less than or equal to 0.01% of B, less than or equal to 0.05% of remaining individual impurities and the balance of Al; and the total content of the impurities is less than or equal to 0.15%. In the process of aging heat treatment, a cold-rolled aluminum alloy plate is subjected to dual-stage aging heat treatment, wherein first stage aging heat treatment is conducted at a temperature of 280-310 DEG C and the thermal insulation duration is 30-140 min, and second stage aging heat treatment is conducted at a temperature of 180-220 DEG C and the thermal insulation duration is 10-20 h. The preparation method solves the problems that, according to the prior art, semi-continuous casting and rolling preparation technology of high conductive aluminum alloy plates is insufficient, rigidity and conductivity are difficult to balance, and high alloying casting is highly difficult and hashigh production cost.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy manufacturing, and relates to a method for preparing high-conductivity aluminum alloy strips. Background technique [0002] Aluminum alloy material has low density, high conductivity, good economy and recyclability, and has good hot extrusion and cold plastic deformation ability. It has always been the first choice material for making high and low voltage conductive cables. However, the application of aluminum alloy plate-type conductive components in electrical equipment such as industry and automobile industry has not received widespread attention. [0003] With the development of economy and society, people pay more and more attention to energy and environmental issues. Taking the automobile industry as an example, pure electric new energy vehicles have developed rapidly since their birth. Compared with traditional fuel vehicles, the proportion of plate-type conductive components in ne...

AI Technical Summary

Problems solved by technology

[0006] In view of this, in order to solve the problems of lack of semi-continuous casting and rolling preparation technology for high-conductivity aluminum alloy plates in the prior art, difficulty in balancing hardness and conductivity, difficulty in high-alloy casting and high production cost, the present invention provides a simple An effective method for preparing high-conductivity aluminum alloy strips, capable of obtaining aluminum alloy strips with both high conductivity and mechanical properties