
The whole part is heated using a medium -frequency hardening machine, cooled by spraying and fully checked to ensure the hardness of the surface and good shock viscosity, reduce wear of the rail circuit and extend the service life.
Process
The whole part is heated using a medium -frequency hardening machine, cooled by spraying and fully checked to ensure the hardness of the surface and good shock viscosity, reduce wear of the rail circuit and extend the service life.