... for forging; for quenching; for hardening; for annealing; 90KW intermediate frequency induction braze welding machine, hardening, quenching(1-20KHz) Main ... , it is good for quiding the design of induction coil and adjusting the capacitance3.Small dimension, light weight ... radiator and various aluminum products. 90KW intermediate frequency induction braze welding machine, hardening, quenching(1-20KHz)