... heater machine, IGBT design, used for bolts and nuts heating, gear forging and so on. Induction heater machine 1.Technical parameters ... over current, over voltage, water failure, phase failure and unfit lad and so on, machine can be protected from destroys ... , annealing, quenching, tempering and heat treatment.4, metal forging, hot forming.5, powder metallurgy sintering, and metal smelting. if you are ...