Arc spraying is a technology that uses an electric arc burning between two continuously fed metal wires to melt metal, atomizes the molten metal with a high-speed airflow, and accelerates the atomized metal particles to spray them to the workpiece to form a coating. . Arc spraying is the most commonly used thermal spraying method in practical application engineering such as steel structure corrosion resistance, wear resistance and mechanical parts maintenance. The arc spraying system is generally composed of a special power supply for spraying, a control device, an arc spray gun, a wire feeder and a compressed air supply system.