Method for producing copper wrapped aluminum bus

Abstract

A processing method of a copper-clad aluminum bus-bar includes the following steps: selecting a copper pipe and an aluminum bar, and removing the oxide skins of the copper pipe internal hole and the aluminum bar excircle by mechanically scrubbing; then putting them into the protective gas to prepare for assembly, inserting the aluminum bar into the copper pipe in the protective gas and closing the two ends to prevent from the air; heating the body with closed-ends in the heating-furnace and preventing them from being oxidized; drawing them to form metallurgical combination; rolling the finished bus-bar rough into copper-clad aluminum bus-bar conductors with different sizes in the rolling mill. The copper-clad aluminum bus-bar combines the two defined conductive metals, copper and aluminum, into one conductor, thereby provides a: lower cost and lighter weight conductor than fine copper conductor under the situation of guaranteeing its reliability. It is very considerable in saving of the material and labor cost. Its cost is lowest, saving 30% to 50%, and it is considered as an environmental conservation product because of saving a mass of copper resource. The density of the fine copper bus-bar is 8.9g / cm3, which is 3.47 times higher than that of the copper-clad aluminum bus-bar, which is 3.63g / cm3, and the copper-clad aluminum bus-bar is 3.47 times longer than the fine copper bus-bar with same weight and width.

Description

technical field [0001] The invention relates to a busbar, in particular to a manufacturing method of a bimetallic copper-clad aluminum busbar. Background technique [0002] The existing copper busbar has good electrical conductivity, low resistivity, high mechanical strength and good anti-corrosion performance, but due to its high price, high weight and high cost, its use is limited, while the aluminum busbar is low in cost but cannot meet the requirements; copper clad The structure of the aluminum bus bar is similar to this structure, but its production method is completely different; the latter is the casing heating and rolling method. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the manufacturing method of the copper-clad aluminum bus bar of the present invention aims to combine the advantages of two certain conductive metals, copper and aluminum, into one conductor, and provide a conductor beyond pure Copper is an econom...

AI Technical Summary

Problems solved by technology

[0002] The existing copper busbar has good electrical conductivity, low resistivity, high mechanical strength and good anti-corrosion performance, but due to its high price, high weight and high cost, its use is limited, while the aluminum busbar is low in cost but cannot meet the requirements; copper clad The structure of the aluminum bus bar is similar to this structure, but its manufacturing method is completely different; the latter is the sleeve heating and rolling method