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Advantages of electroplating of aluminum and aluminum alloy materials

2022-07-19

It has the advantages of good conductivity, fast heat transfer, light specific gravity, easy forming, etc., but aluminum and aluminum alloys have the disadvantages of low hardness, no wear resistance, easy intergranular corrosion, difficult welding, etc., which affect the scope of use. Therefore, in order to develop strengths and circumvent weaknesses, electroplating is used to solve this problem in modern industry.
1) Improve decoration
2) Improve surface hardness and wear resistance
3) Reduce friction coefficient and improve lubricity
4) Improve surface conductivity
5) Improve corrosion resistance
6) Easy to weld
7) Improve the adhesion with rubber during hot pressing
8) Improve reflectance
9) Repair dimensional tolerance
As aluminum is a relatively active metal, the electroplated substances are more active than aluminum. Therefore, before electroplating, corresponding chemical conversion must be done, such as zinc immersion, zinc iron alloy, zinc nickel alloy, and the intermediate layer cyanide copper plating layer with good adhesion between zinc and zinc alloy bottom layer. Due to the loose structure of the die-casting aluminum body, the surface part of the body cannot be polished off during grinding, otherwise pinholes, acid spitting, peeling and other phenomena will occur.

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Shenzhen Perfect Precision Product Co., Ltd.

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