Cold rolling manufacture method of copper and aluminum composite plate strips

Abstract

The invention discloses a cold rolling manufacture method of copper and aluminum composite plate strips. The cold rolling manufacture method comprises the following steps that: 1, a copper plate and an aluminum plate are subjected to homogenization annealing treatment; 2, surface treatment is carried out: firstly, the copper plate and the aluminum plate subjected to the homogenization annealing treatment are subjected to soaking degreasing, then, the copper plate and the aluminum plate subjected to the soaking degreasing are taken out for drying, and next, the composite surfaces to be rolled of the copper plate and the aluminum plate are ground by a stainless steel wire brush; 3, the copper plate and the aluminum plate are subjected to cold rolling compounding by a cold rolling mill, so copper and aluminum composite plate blanks are obtained; and 4, the copper and aluminum composite plate blanks subjected to the cold rolling are subjected to the diffusion annealing treatment. The cold rolling manufacture method has the advantages that through improving the cold rolling process operation and the process parameters, the copper plate and the aluminum plate are subjected to full diffusion and chemical reaction on the composite surfaces in the manufacture process, so the transition structure with excellent performance is obtained at the composite surfaces, and the bonding intensity of finished products is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of metal composite plates, and in particular relates to a cold rolling manufacturing method of copper-aluminum composite plates and strips. Background technique [0002] The copper-aluminum composite strip is a composite material coated with a layer of copper on the surface of the aluminum plate. Using copper-aluminum composite strips instead of copper strips, which has a wide range of applications and a large demand, has broad application prospects in the fields of power and signal transmission, and is expected to form a huge industry. [0003] The world's main copper resources are distributed in North America, Latin America and Central Africa, while my country's copper resources are relatively scarce. With the continuous and substantial growth of my country's copper output, especially the continuous expansion of smelting capacity, the supply of raw materials has become more and more tense, and the contrad...

AI Technical Summary

Problems solved by technology

However, due to the lack of sufficient diffusion and chemical reactions in the rolling composite process, the transition structure of the composite interface has not been fully realized to a large extent, and the bonding strength is still lacking.