Methods and apparatus to control hot-start weld current for arc ignition
AssigneeIllinois Tool Works Inc.
InventorsCraig Steven Knoener, Zach MacMullen, Charles Ace Tyler, Lucas Charles Johnson
Life of this patent
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Abstract
Methods and apparatus to control hot-start weld current for arc ignition are disclosed. An example welding-type power supply includes a power converter to output welding-type current, a temperature monitor to determine a temperature of an electrode using at least one of a temperature measurement or a thermal model, and a current controller to control a hot-start weld current output by the power converter based on the temperature of the electrode.
Claims20
A welding-type power supply, comprising:
- a power converter to output welding-type current;
- a temperature monitor to determine a temperature of an electrode using at least one of a temperature measurement or a thermal model;
- and
- a current controller to control the power converter to output a hot-start weld current based on the temperature of the electrode.
A welding-type system, comprising:
- a welding-type power source to provide welding-type power to a welding torch, the welding-type power including hot-start weld current and steady state weld current;
- a temperature monitor to determine a temperature of an electrode using at least one of a temperature measurement or a thermal model;
- and
- a current controller to control the welding-type power source to output a hot-start weld current based on the temperature of the electrode.
A non-transitory machine readable medium comprising machine readable instructions which, when executed, cause a control circuit to:
- identify an end of a welding arc at a welding torch;
- determine a temperature of an electrode at the welding torch;
- select a hot-start weld current based on the temperature of the electrode;
- and
- control a welding-type power source to output the hot-start weld current in response to an arc ignition at the welding torch.
Dependencies are inferred from the claim text.