A method of copper plating on aluminum and aluminum alloy coils

Abstract

The invention discloses a method of plating copper on aluminum and an aluminum alloy coiled material. After the aluminum alloy coiled material is unfolded, the method sequentially comprises the following main steps that (1) the surface of the coiled material is subjected to degreasing and acid pickling; (2) the surface of the coiled material is subjected to secondary zinc immersion; (3) a zinc layer is coated with a nickel layer and activation is carried out; (4) the nickel layer is coated with a copper layer, and microetching and then passivation are carried out; (5) micropores in the surface of the copper layer are plugged with organic matter; and (6) the coiled material is subjected to blowing and drying treatment. A continuous electroplating technology of aluminum and the aluminum alloy coiled material, namely, an aluminum and aluminum alloy coiled material electro-coppering technology is realized; an electroplated product has the characteristics that the conductivity is good, the weldability is high, heat dissipation is rapid, the weight is light, the stamping is easy and the cost is low; and the electroplated aluminum product has the properties of a copper product, so that the purpose of replacing the copper product can be achieved.

Description

Technical field [0001] The invention relates to a method for plating copper on a metal substrate, in particular to a method for plating copper on aluminum and aluminum alloy coils, and belongs to the technical field of metal surface processing. Background technique [0002] The electroplating process is the process of plating a thin layer of other metals or alloys on the metal surface using the principle of electrolysis. It is the process of using electrolysis to attach a layer of metal film to the surface of the metal or other material to prevent metal oxidation (such as Corrosion), improve wear resistance, electrical conductivity, reflectivity, corrosion resistance and enhance aesthetics. [0003] The traditional electroplating production method is: first find the material manufacturer to buy the material, then press and form, then electroplating, and finally back to the user. This method adds additional intermediate links, transportation costs, and time costs. As the productio...

AI Technical Summary

Problems solved by technology

As the production process of electronic products becomes more and more mature, the requirements for suppliers are also getting higher and higher. When the products need to be welded, the weight of the single chip is lighter, and the production speed is faster, the traditional production methods can no longer meet the needs of customers. Require

[0004] The traditional electroplating method cannot overcome the continuous electroplating process of coils. Although there are continuous electroplating production processes in the market, the process of electroplating copper on aluminum alloy coils is not yet mature. Therefore, in order to realize continuous electroplating of coils The process still needs to overcome technical difficulties