... High Quality & Reliability 5. Self Adapting Frequency induction auto parts hardening machine Heat Treatment like annealing, normalizing, quenching, tempering.1. ... motorcycle fittings, such as crankshaft, connecting rod, piston pin, chain wheel, aluminum wheel, valve, rock arm shaft, semi ... parts and machined parts, such as big shaft, gear (chain wheel), camshaft, chuck and clamp etc.6. Hardware molds ...