... frequency induction braze welding machine, hardening, quenching(1-20KHz) Main features 1.Adopt IGBT technology, with all-round protective function ... rod, pinton pin, chain wheel, aluminum wheel, valve, rock arm shaft, small shaft and fork. Various electric tools, such as ... elements of various forms. Annealing (tempering and modulation) 1.Annealing of various stainless steel products, such as stainless ...