The electroplating process is a method of coating a conductor with a layer of metal using the principle of electrolysis. Electroplating refers to a surface processing method in which the base metal to be plated is used as the cathode in a salt solution containing pre-plated metal, and the cations of the pre-plated metal in the plating solution are deposited on the surface of the base metal through electrolysis to form a coating. . The properties of the coating are different from those of the base metal and have new characteristics. According to the function of the coating, it is divided into protective coating, decorative coating and other functional coating. During electroplating, the plated metal or other insoluble material is used as the anode, the workpiece to be plated is used as the cathode, and the cations of the plated metal are reduced on the surface of the workpiece to be plated to form a plated layer. It can enhance the corrosion resistance of metal (the coating metal is mostly corrosion-resistant metal), increase hardness, prevent wear, improve electrical conductivity, smoothness, heat resistance and surface beauty.

Classification by coating:

(1) Chrome plating;

(2) Copper plating;

(3) Tin plating;

(4) Galvanized.