Thermal spraying refers to the heating and melting of the coating material, atomizing it into extremely fine particles with high-speed air flow, and spraying it to the surface of the workpiece at a high speed to form a coating. Different coating materials are selected according to the needs to obtain wear resistance, corrosion resistance, oxidation resistance, heat resistance, electromagnetic wave resistance and other properties.

Spray powder palys a very important role among the entire thermal spray materials, according to different coating hardness, respectively applied to the repair and protection of mechanical parts.