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Electroplating

Electroplating is an electrochemical and redox process. Taking nickel plating as an example: immerse the metal workpiece in a solution of metal salt (NiSO4) as the cathode, 

and the metal nickel plate as the anode. After connecting the DC power supply, a metal nickel plating layer will be deposited on the workpiece. The types of electroplating include:

1. Galvanization: mainly used for anti-corrosion on steel parts, it is the largest plating type in terms of production. Low cost, good corrosion resistance, and storage resistance, widely used in light industry, 

electromechanical, agricultural machinery, and national defense.

2. Cadmium plating: Steel parts are coated with cadmium, which has better protective performance than zinc plating in marine and humid atmospheric environments. It is commonly used for component 

protection in aviation, navigation, and electronic industries

3. Tin plating: The corrosion products of tin are harmless to humans and easy to solder. Tin plating is widely used in food packaging products, tableware, tableware, and many parts in the electronic industry 

that require brazing.

4. Nickel plating: widely used, can be used for both protective, decorative, and functional purposes. The former is mainly used in electrical appliances, hardware, automobiles, etc; The latter is used for repairing 

easily worn products.

5. Copper plating: Copper plating is often used as an intermediate layer for other coatings to improve the adhesion between the surface coating and the base metal.

6. Chromium plating: The chromium plating layer has high hardness, excellent wear resistance, and low friction coefficient, used to protect decorative coatings, prevent rust, and beautify the appearance.