Surface quenching is a process in which only the surface layer of the component in the desired thickness is heated and subsequently hardened. The thickness of the layer is, if desired, selected from a few tenths of a millimetre to several millimetres. The result is a hard surface layer on the tough core of the component. The heating of the surface layer can be performed in several ways (e.g. flame, induction heating or laser beam heating). Typical components for this process include camshafts, hydraulic pistons, gearboxes, shaft diameters for bearings, and the like.
This process is carried out with the GV 80 (80KW / 250K Hz) high-frequency machine and the Martenzit SP-01-14Q CNC medium-frequency aggregate.