Electroplating is the most commonly used means of surface treatment, and its main purpose is for beauty and corrosion prevention; Electroplating is to add another layer of metal on the metal surface, so the size of the workpiece surface will change. The common types of electroplating are as follows: tin plating - mainly iron tin plating, because iron doesn't eat tin very much, it's inconvenient to take tin for welding. After tin plating, this problem is solved, but the anti rust ability is not good (tin is easy to oxidize, and it will turn black after oxidation, which is very ugly).
Nickel plating - the workpiece after nickel plating is bright, beautiful and has strong rust prevention ability; It's not good to take iron directly to nickel plating, because iron doesn't eat nickel very much. After electroplating, the container peels and falls off. Generally, it's better to nickel plating after plating a layer of copper on the surface of iron parts, and it can shield the electric field and magnetic field together.
