... hardening; for annealing; IGBT Intermediate frequency induction hot forging machine (5-20Khz) Main features 1.Adopt IGBT technology, ... , so it reduces th cost when producing.induction welding machine Application of Induction heating equipment: Heating (hot forging, ... handle, mold accessory, kitchen and table ware, art ware, standard part, fastener, fabricated mechanical part, bronze lock, rivet, steel ...