The surface properties of steel balls directly affect the service life, in order to improve the contact fatigue strength and surface quality of steel balls in the process measures, the application of surface modification technology is the surface strengthening treatment of steel balls. In order to make the steel ball get better use, improve the external force borne by the steel ball during the use of the steel ball die-casting parts, and extend the germination life of the steel ball fatigue crack, we can carry out different treatment methods on the surface of the steel ball, and some surface performance treatment methods of metal steel ball surface performance materials mainly have the following six types:
1. Functional plating of metal material surfaces: including electroless plating, electroplating, composite plating, brush plating and amorphous treatment.
2. High-energy beam treatment on the surface of metal materials: including laser surface treatment, electron beam surface modification treatment and example injection technology.
3. Vapor deposition technology on the surface of metal materials: including physical and chemical vapor deposition methods.
4. Thermal diffusion penetration process on the surface of metal materials: including carburizing. Chemical heat treatment such as nitriding and carbonitriding.
5. Surface quenching: such as high-frequency surface quenching, flame surface quenching, etc.
6. Cold work hardening treatment: such as shot peening, rolling, cold pressing cold rail and other processes.