... work pieces. Detail applications are stated as follows:1. Quenching for various hardware and tools, such as plier, wrench, hammer, ... ax, screwing tools and shear (orchard shear).2. Quenching for various automobile and motorcycle fittings, such as crankshaft, connecting rod ... parts, such as shaft, gear (chain wheel), cam, chuck and clamp etc.6. Quench for hardware molds, such as small-size mold ...