... easy operation 3.IGBT technology 3.CE certificated High Frequency Quenching Machine.. Rated Duty Cycle: 100%. Application of Induction ... 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 ...