... quenching; for hardening; for annealing; IGBT Intermediate frequency induction hot forging machine (5-20Khz) Main features 1.Adopt IGBT technology, with ... , connection rod, pinton pin, chain wheel, aluminum wheel, valve, rock arm shaft, small shaft and fork. Various electric ... metal work pieces, such as golf ball head, cue, brass lock, hardware copper fitting, kitchen knife handle, blade, aluminum ...