Pulse arc welding control method and pulse arc welding power supply
AssigneeDAIHEN Corporation
InventorKento TAKADA
Life of this patent
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Abstract
A method for controlling pulse arc welding includes repeating provisions of welding currents during a peak rise period, a peak period, a peak fall period, and a base period as one pulse cycle, and performing arc length control based on a welding voltage setting value. The feed speed of the welding wire is set to: a forward-feeding peak value during the peak period; a base period forward-feeding value during the base period to generate a short circuit, where the base period forward-feeding value is smaller than the forward-feeding peak value; and a reverse-feeding peak value when the short circuit occurs. The reverse-feeding peak value is maintained after the short circuit is cleared.
Claims6
A method for controlling pulse arc welding, the method comprising:
- feeding a welding wire forward and backward;
- providing a peak rise current that rises from a value of a base current to a value of a peak current during a peak rise period;
- providing the peak current during a peak period;
- providing a peak fall current that falls from the value of the peak current to the value of the base current during a peak fall period;
- providing the base current during a base period;
- repeating providing the respective currents as one pulse cycle;
- and
- performing arc length control based on a welding voltage setting value,
- wherein a feed speed of the welding wire is set to:
- a forward-feeding peak value during the peak period;
- a base period forward-feeding value during the base period to generate a short circuit, the base period forward-feeding value being smaller than the forward-feeding peak value;
- and
- a reverse-feeding peak value when the short circuit occurs, wherein the reverse-feeding peak value is maintained after the short circuit is cleared.
A pulse arc welding power supply configured to:
- feed a welding wire forward and backward;
- provide a peak rise current that rises from a value of a base current to a value of a peak current during a peak rise period;
- provide the peak current during a peak period;
- provide a peak fall current that falls from the value of the peak current to the value of the base current during a peak fall period;
- provide the base current during a base period;
- repeat providing the respective currents as one pulse cycle;
- and
- perform arc length control based on a welding voltage setting value,
- wherein a feed speed of the welding wire is set to:
- a forward-feeding peak value during the peak period;
- a base period forward-feeding value during the base period to generate a short circuit, the base period forward-feeding value being smaller than the forward-feeding peak value;
- a reverse-feeding peak value when the short circuit occurs, wherein the reverse-feeding peak value is maintained after the short circuit is cleared.
Dependencies are inferred from the claim text.