... 1 Heat treating all classes of machine parts to quenching,anneal 2.Adopts Siemens IGBT,MOSFET Copper induction coil contain four types ... ,smelting, other field and with CEpredominance as belows: 1.The induction heating equipment mains circuit adopts Siemens IGBT,MOSFET and any other ... ,phase fail,over hot,etc. 3.It has the function of manual,semi-automatic,full-automatic and divide period to control ...