Patent ID: 8076611

Claim:
A welding device comprising: a welding torch including: a welding tip having a feeder for providing a welding wire; and an insulating member disposed nearer to a work-piece to be welded than the feeder and having a through hole in order to insert the welding wire; a memory that stores a plurality of welding conditions including a welding current waveform controlling parameter including a current slope during a short-circuit period associated with a length of the insulating member along the through hole; a power supply that supplies electric power between the feeder and the work-piece; an input section that receives an input of a set value of the length of the insulating member along the through hole; a selector that selects one of the plurality of welding conditions based on the set value of the length of the insulating member along the through hole; and a controller in communication with the selector, the controller operable to control the power supply based on the welding condition selected by the selector.