ARC BLOW COUNTERMEASURES CONTROL METHOD, AND CONSUMABLE ELECTRODE TYPE PULSE ARC WELDING EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide an arc blow countermeasures control method, and an arc welding equipment adaptable to not only a weak state such as a signal symptom of arc blow but also a state of occurrence of considerably strong arc blow.;SOLUTION: In the consumable electrode type pulse arc welding in which a welding wire is fed and the welding is performed by repeatedly conducting the predetermined peak current and the predetermined base current, if the welding voltage exceeds the preset reference value of the welding voltage during the period of the base current when arc is generated, it is determined that arc blow occurs, the arc blow is suppressed by adding the current according to the increase of the welding voltage from the reference value of the welding voltage to the base current, and if the welding voltage is below the reference value of the welding voltage during the occurrence of arc blow, it is determined that the arc blow is eliminated, and the base current is returned to a normal value.;COPYRIGHT: (C)2006,JPO&NCIPI