... wide usage 3.long service life High Frequency Induction Heating Machine ModelOscillationpowerOscillation circuitOscillationfrequencyOscillating tubeMax.Workpiece dimension ... , pneumatic components, and other machinery and metal parts surface, hole, partial or whole quenching;Line ... Large gear points tooth quenching, wheel, large shaft parts outside surface section, continuous quenching, etc2.Steel, ...