IGBT High Frequency Induction melting Machine, IGBT Induction brazing Equipment, IGBT induction quenching furnace . IGBT ... equipment,portability IGBT induction heating furnace,portability IGBT induction heating machine. Application area:(1) heating,shaft, gear, quenching and annealing ... tools, rigging, the hot upsetting of hot-rolled twist drill and so on, The longer of the workpieces diameter, the ...