... , over current, lack of water, phase fail, over hot, etc.Manual, automatic regulating automatically, enhances the workpieces heating ... 20kHz1-20kHz0.5-10kHz0.5-10kHz0.5-10kHzPressure of cooling water0.2MPa0.2MPa0.3MPa0.3MPa0.5MPa0.5MPa0.5MPa0.5MPa0 ... 40 °CApplication:Melting, shaft quenching, hot forging for standard wares, copper/steel plate heating, rotor hot cooperate, high polymer filter formation, ...