Arc start control method in consumable electrode arc welding
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United States of America Patent
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Issued Date -
Jun 26, 2008
app pub date -
Sep 12, 2007
filing date -
Dec 20, 2006
priority date (Note) -
Abandoned
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Abstract
An arc start control method is provided for consumable electrode arc welding. According to this method, a welding wire, supplied through a welding torch, is brought into contact with a work. Then, an initial current is applied to the welding wire and the work that are held in contact with each other. Then, an initial arc is generated by moving the welding wire away from the work with the application of the initial current maintained, and thereafter the initial arc is changed to a steady arc. The initial current is increased gradually with a predetermined increase rate for a predetermined period of time starting at beginning of the application of the initial current.
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