Copper coated aluminum bus bank production method and apparatus

Abstract

The invention belongs to a production method of a compound metal bus bar, particularly to a production method of a copper-clad aluminum bus bar, which comprises the following steps: (1) pretreatment of raw materials: acid washing a copper tube as a raw material, polishing, and placing an aluminum rod into the copper tube; (2) heat treatment before deformation: placing the raw material which is subjected to drawing into a vacuum annealing furnace for annealing; and (3) rolling the copper and the aluminum with fresh metal surface together under high pressure by using different lanes irreversible constant rolling speed hot rolling technique. The production method has the advantages of simple process, wide process conditions and easy operation. The obtained copper-clad aluminum bus bar has the same electrical conduction performance, oxidation resistance and other performances as those of a pure copper bus bar, while having remarkably reduced cost and copper consumption, which achieves resources saving purpose for countries being short of copper resources.

Description

1. Technical field: [0001] The invention belongs to a production method of a composite metal wire bar, in particular to a production method of a copper-clad aluminum bus bar, and also provides equipment used in the method. 2. Background technology: [0002] With the development and progress of industry, there are more and more high-power and high-current electrical equipment, and the supporting electronic control equipment is also increasing. The electric conductors in the current large-scale electrical equipment are mostly pure aluminum busbars or pure copper busbars. The material difference between them can easily cause a fuse accident at the joint. To transform the existing situation, the pure aluminum busbar can be replaced with a pure copper busbar, which will eliminate the fuse accidents at the joints. But this transformation investment will be very large. Due to the lack of copper resources in our country, most copper materials need to be imported. In order to save ...

AI Technical Summary

Problems solved by technology

Due to the lack of copper resources in our country, most copper materials need to be imported. In order to save copper resources, achieve the electrical conductivity of pure copper bars, and achieve the performance of pure copper bars in terms of oxidation resistance, copper-clad aluminum busbars made of composite materials are in the performance The requirements can be met, but the current production method of copper-clad aluminum row is not perfect, so that the strength of the copper-aluminum bonding surface is generally not enough in the product, and the interphase diffusion effect of the metal is not good, which affects the application range of the product.

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