... :Quenching: hammer, pliers, measuring tools, screwdrivers, picks, knives, scissors, gardening tools and other tools of the quenching, shaft, pin, ... textile machinery parts (Th cloth, roller), pump parts, drilling tools, rotor, line wheels, engineering machinery parts, aerospace parts ... methods (such as gas, oxygen, acetylene, coking coal, electric furnace, high frequency tube etc.),the thermal ...