Arc welding control method
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsNoriyuki Matsuoka, Atsuhiro Kawamoto, Junji Fujiwara, Kaito Matsui
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Abstract
In a consumable electrode-type arc welding in which pulse welding and short-circuit welding are alternately repeated, a welding current is controlled such that a welding current immediately before shifting from the pulse welding to the short-circuit welding is lower than a base current in a pulse.
Claims8
A method of controlling a consumable electrode-type arc welding which alternately and repetitively shifts between a pulse welding duration in which a pulse welding is performed and a short-circuit welding duration in which a short-circuit welding is performed, the arc welding being executed by an arc welding apparatus including a welding electrode, the method comprising:
- controlling the welding apparatus for the pulse welding duration such that a welding current flowing in the welding electrode forms a plurality of pulses alternately repeating one or more values of a peak current and one or more values of a base current;
- and
- controlling the welding apparatus for the short-circuit welding duration, such that the short-circuit welding duration includes one or more short-circuit durations for each of which short circuit between the welding electrode and a welding workpiece is produced and further includes one or more arc-generating durations for each of which an arc is generated between the welding electrode and the welding workpiece, the one or more short-circuit durations and the one or more arc-generating durations alternately shift,
- wherein the controlling the welding apparatus for the pulse welding duration comprises controlling the welding apparatus such that a first value of the welding current after the plurality of pulses are formed for the pulse welding duration and immediately before shifting from the pulse welding duration to the short-circuit welding duration is smaller than at least one of the one or more values of the base current of the plurality of pulses.
A method of controlling a consumable electrode-type arc welding which alternately and repetitively shifts between a pulse welding duration in which a pulse welding is performed and a short-circuit welding duration in which a short-circuit welding is performed, the arc welding being executed by an arc welding apparatus including a welding electrode, the method comprising:
- controlling the welding apparatus for the pulse welding duration such that a welding current flowing in the welding electrode forms a plurality of pulses alternately repeating a peak current and a base current;
- controlling the welding apparatus for the short-circuit welding duration, such that the short-circuit welding duration includes one or more short-circuit durations for each of which short circuit between the welding electrode and a welding workpiece is produced and further includes one or more arc-generating durations for each of which an arc is generated between the welding electrode and the welding workpiece, the one or more short-circuit durations and the one or more arc-generating durations alternately shift;
- and
- detecting a short circuit between the welding electrode and the welding workpiece for the short-circuit welding duration,
- wherein the controlling the welding apparatus for the short-circuit welding duration comprises controlling the welding apparatus for the short-circuit welding duration such that the welding current after the detecting the short circuit is smaller than the base current.
Dependencies are inferred from the claim text.