... hardening; for annealing; 200KW intermediate frequency induction heating machine welding, brazing, hardening, quenching(1-20KHz) Main features 1.Adopt IGBT ... coil and adjusting the capacitance3.Small dimension, light weight, portable. Only 1 square meter.4.24 hours continuous smelt ... products. 200KW intermediate frequency induction heating machine welding, brazing, hardening, quenching(1-20KHz)