Initiation of welding arc by restricting output
AssigneeVictor Equipment Company
InventorsRoger H. Lambert, Geoffrey H. Putnam
Life of this patent
Estimating the term…
Abstract
Systems and methods for providing an improved start in a welding process are provided. The system may include a power circuit and a control circuit. The power circuit can generate a welding output power. The control circuit may be in communication with the power circuit to control, during the start of the welding process, at least one welding parameter until the control circuit determines that welding energy output exceeds an energy output threshold.
Claims27
A system for generating a weld during a start of a welding process, the system comprising:
- a power circuit for generating a welding output power;
- a control circuit in communication with the power circuit, wherein the control circuit controls the welding output power generated by the power circuit;
- wherein the control circuit is configured to simultaneously limit a current and increase an inductance from an initial start of the welding process, wherein the welding output power is based on the current and the inductance;
- wherein the control circuit is further configured to provide a normal welding parameter after limiting the current and increasing the inductance when the control circuit determines that a welding energy output exceeds an energy output threshold;
- and
- wherein the control circuit determines a period of time for providing a current pulse, wherein the period of time is based on a run-in percentage of a wire feed speed and an output voltage, wherein a magnitude of the current pulse varies during the period of time.
A system for generating a weld during a start of a welding process, the system comprising:
- a power circuit for generating welding output power;
- a control circuit in communication with the power circuit, wherein the control circuit controls the welding output power generated by the power circuit;
- wherein the control circuit is configured to simultaneously limit a current and increase an inductance from an initial start of the welding process for a duration;
- wherein the control circuit is further configured to provide a normal welding parameter when the duration has exceeded a time threshold, wherein a minimum predetermined power output is provided during the duration;
- and
- wherein the control circuit determines a period of time for providing a current pulse, wherein the period of time is based on a run-in percentage of a wire feed speed and an output voltage, wherein a magnitude of the current pulse varies during the period of time.
Dependencies are inferred from the claim text.