Patent ID: 8933370
Filing Date: 2015-01-13
Classification: B23K

Abstract:
1. An arc welding control method in which an object to be welded is welded by alternately repeating a short circuit period, during which a welding wire and the object to be welded short-circuit, and an arc period, during which an arc is generated and discharged, the method comprising: comparing average output voltage, which is an average of welding voltage calculated during welding, to set voltage preliminarily set; and controlling a welding output current produced when the arc is generated based on the comparison result therefrom, such that the welding output current produced when the arc is generated is calculated using a difference between the average output voltage and the set voltage, wherein, when the average output voltage is higher than the set voltage, a welding output current produced when the arc is generated is controlled such that the welding output current is smaller than a given current value preliminarily set, based on a difference between the average output voltage and the set voltage, and wherein, when the average output voltage is lower than the set voltage, the welding output current produced when the arc is generated is controlled such that the welding output current is larger than the given current value, based on the difference between the average output voltage and the set voltage.