1, metal material surface functional plating: including electroless plating, electroplating, composite plating, brush plating and amorphous treatment.
2, high energy beam treatment of metal surface: including laser surface treatment, electron beam surface modification treatment and example injection technology.
3, the surface of metal materials vapor deposition technology: including physical and chemical vapor deposition method.
4, metal material surface thermal diffusion infiltration process: including carburizing. Chemical heat treatment of nitriding and carbon-nitrogen infiltration.
5, Surface quenching: such as high-frequency surface quenching, flame surface quenching and so on.
6, cold hardening treatment: such as shot peening, rolling, cold pressure cold rail and other processes.
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