Metal coating protection, metal coating on the surface of the equipment are the most common with electroplating, spray coating, brush plating and so on. Electroplating not only makes the surface of the equipment beautiful, but also can make the equipment rust, corrosion, it is widely used in the production practice. However, a large area of plating, by plating equipment restrictions, the general factory does not attach such a workshop, therefore, this method is not introduced here. Mainly on the metal surface of the metal spray protection. Metal spray step is to use compressed air to melt the metal atomized particles, sprayed on the surface of the workpiece to form a metal coating. Metal surface Before spraying, it is necessary to pre-rust the surface and make the surface rough. Spraying process and equipment are relatively simple, and basically without the equipment, parts of the size and shape of the restrictions, according to the need to get a good metal or alloy coa...