Arc welding power supply and methods for controlling arc welding power supply
AssigneeDAIHEN Corporation
InventorsToshiyuki Tanaka, Toshiaki Nakamata
Life of this patent
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Abstract
An arc welding power supply supplies power to a welding wire functioning as a discharge electrode to generate an arc from an electrode distal end of the welding wire and perform arc welding on a welded article. The arc welding power supply includes an output control unit that adjusts the power supplied to the welding wire to a power value suitable for arc welding. A feed control unit cyclically changes a feeding speed of the welding wire. The feeding speed includes a forward feeding speed and a rearward feeding speed. An amplitude control unit cyclically changes an amplitude of the feeding speed of the welding wire to cyclically vary an average arc length.
Claims3
An arc welding power supply that supplies power to a welding wire functioning as a discharge electrode while alternately performing forward feeding and reverse feeding of the welding wire to generate an arc from an electrode distal end of the welding wire and perform arc welding on a welded article, the arc welding power supply comprising a control circuit that is configured to:
- adjust the power supplied to the welding wire to a power value suitable for arc welding;
- cyclically change a feeding speed of the welding wire, wherein the feeding speed includes a forward feeding speed and a rearward feeding speed;
- set a plurality of amplitude values of the feeding speed of the welding wire based on a set voltage of an output voltage;
- and
- cyclically switch an amplitude of the feeding speed of the welding wire between the plurality of amplitude values to cyclically vary an average arc length.
Dependencies are inferred from the claim text.