TWO-ELECTRODE ARC WELDING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a two-electrode arc welding method that can expedite release of bubbles inside molten metal by greatly vibrating and stirring a molten pool. SOLUTION: The two-electrode arc welding method is such that two pulsed current groups composed of two different peak currents or those of two different energizing periods are switched on a preceding wire and a succeeding wire with a pulsed current group switching signal and that the switching is also synchronized for the pulsed current groups energizing the preceding and succeeding wires. COPYRIGHT: (C)2004,JPO&NCIPI