... hardening; for annealing; IGBT Intermediate frequency induction hot forging machine (5-20Khz) Main features 1.Adopt IGBT technology, with ... , so it reduces th cost when producing.induction welding machine Application of Induction heating equipment: Heating (hot forging, ... smelting, for instances, embedded welding of copper core of computer radiator with aluminum sheet and speaker web, compound of ...