... through the heating based on the principle of hot expansion or hot smelting, for instances, embedded welding of copper core of computer ... pieces, such as golf ball head, cue, brass lock, hardware copper fitting, kitchen knife handle, blade, aluminum pan, aluminum pail, ... LHM-200KW IGBT Intermediate Frequency Induction Heating Power, Induction Heating, Welding, Brazing, Hardening, Quenchin(1-20khz)