Method for producing copper clad aluminum busbar by electrolysis process

Abstract

The invention discloses a method for producing copper clad aluminum busbar by a electrolysis process, which is carried out according to the following steps of: 1) deoiling, washing, eroding and rewashing the surface of an aluminum busbar; 2) activating the surface of the cleaned aluminum busbar for 10 to 60 minutes; 3) washing the activated aluminum busbar; 4) directly plating a copper layer on the aluminum busbar by the electrolysis of a electrolyte; 5) cold drawing and scalping the copper layer clad outside the aluminum busbar by electrolysis; and 6) cold rolling or cold drawing the scalped copper clad aluminum busbar, and annealing and cold rolling or cold drawing copper clad aluminum busbar again to obtain the copper clad aluminum wire. The method has the following advantages that: 1, the copper content of the copper layer is up to over 99.95 percent so that the conductivity of the copper layer is high; 2, the contact face of the copper and the aluminum is firm; and 3, the production cost is reduced by over 40 percent.

Description

Technical field: [0001] The invention belongs to a metal production method, in particular to a method for producing copper-clad aluminum bars by electrolysis. Background technique: [0002] At present, there are mainly two methods for producing copper-clad aluminum bars: copper tube sheathing aluminum method and cladding welding method. Or cold drawn copper-clad aluminum row. But there is following shortcoming in above-mentioned two kinds of methods: 1, if the sundries such as oxide or oil in copper and aluminum contact layer are not removed cleanly, be easy to cause the bonding between the two metals not firm. 2. The finished product rate is low and the production cost is high. 3. The copper content of the copper layer is low. Invention content: [0003] The purpose of the present invention is to overcome the shortcomings in the above-mentioned prior art, and provide a method for producing copper-clad aluminum bars by electrolysis, which can make the copper and aluminu...

AI Technical Summary

Problems solved by technology

However, the above two methods have the following disadvantages: 1. If the impurities such as oxides or oil in the contact layer of copper and aluminum are not removed cleanly, it is easy to cause the bond between the two metals to be weak

2. The finished product rate is low and the production cost is high