... brazing, forging, casting, tempering, heating and ect. Application of handheld induction heater:A. Heating (hot forging, hot fitting and smelting):1 ... for various automobile and motorcycle fittings, such as crankshaft, connecting rod, piston pin, chain wheel, aluminum wheel, valve, rock arm shaft ... pan, aluminum pail, aluminum radiator and various aluminum product handheld induction heater