... through forging press with the help of punch press, forging machine or other equipments, for instances, hot extrusion of watch case ... ).2.Quench for various automobile and motorcycle fittings, such as crankshaft, connecting rod, piston pin, chain wheel, aluminum wheel, valve, rock ... electric tools, such as gear and axes.4. Quench for machine tools, such as lathe deck and guide rail.5. Quench ...