Patent ID: 8513568

Claim:
A consumable electrode arc welding method in which welding takes place by feeding a welding wire at a wire feed speed with a cyclic change in a predetermined cycle and amplitude, the wire feed speed including forward feed for feeding the welding wire toward a workpiece to be welded and backward feed for feeding the welding wire in a direction opposite to the forward feed, the method comprising: stopping the cyclic change and applying a constant control at a first feed speed of the wire feed speed if no short circuit occurs during deceleration of the wire feed speed in the forward feed of the welding wire before one of the wire feed speed reaching a predetermined wire feed speed, a predetermined time passing from arc generation, and a feed cycle of the welding wire reaching a predetermined angle when the predetermined cycle of feeding the welding wire is expressed by an angle; and welding by starting deceleration from the first feed speed and resuming the cyclic change if the short circuit occurs during the forward feed at the first feed speed.