INVERTER ARC WELDING SYSTEM WITH TWO-WELDING SOURCES AND ONE TORCH USING ONE TORCH WHILE COMPENSATING FOR UNDERCUTS

摘要

PURPOSE: An inverter arc welding system with two-welding sources and one torch is provided to realize an ultra-high speed welding process above 6m/min by using only one torch while compensating for undercuts. CONSTITUTION: An inverter arc welding system includes two welding sources, two wire feeders, one torch, and one digital processor unit for controlling two welding sources. The torch includes an electrode of each welding source. Interference between arcs generated from each electrode is controlled by means of the digital processor unit. When welding current is increased at a front wire, an arc is constantly maintained at a rear wire by means of base current. The digital process unit supplies twin pulses while synchronizing two welding sources.