... wildly used in heat treatment, bonding, brazing, welding, forging, melting and heat fitting solutions in many fields ... , warm bending, high frequency shrinkage fitting, heat enveloping, heat sealing, metal desiccating, nut inserting, rotor inserting ... gauges, moulds, piston rods, etc HSS Heat TreatmentInduction HardeningHardening and TemperingGas CarburizingCase HardeningTougheningCarbo NitridingCore ...