... work pieces. Detail applications are stated as follows: 1. Quench for various hardware and tools, such as plier, wrench, hammer, ... and shear (orchard shear).2.Quench for various automobile and motorcycle fittings, such as crankshaft, connecting rod, piston pin, chain wheel, aluminum ... solder by heating it to a certain temperature for the purpose of connecting two types of metals of the same material ...