... monolithic application, many sets of machine parallel centralized control,super frequency induction welding,hardening,heating,Forging&Forming,Heat ... ³applicationsWelding big carts knife, a large brazing welding and other welding; a variety of quenching, hot forging, ... the workpiece surface and hardening, annealing, motors, valves, welding, tungsten, molybdenum, and copper tungsten alloy sintering as ...