AC pulse arc welding method

Details AC pulse arc welding method AC pulse arc welding method

2007-06-26

2007-06-26

Shaw, Clifford C. (Department: 1725)

Electric heating

Metal heating

By arc

Reexamination Certificate

active

11155645

ABSTRACT:
In accordance with an AC pulse arc welding method, a periodic welding current is applied, that includes, for a pulse cycle, negative current in electrode negative polarity and positive current in electrode positive polarity. Then, a negative current rate is set by a negative current rate setting value, where the negative current rate represents the ratio of the negative current to the welding current for the pulse cycle. Then, a feeding speed of welding wire as a consumable electrode is set by a feeding speed setting value. The method further includes: setting an average of the welding current by a welding current setting value; and performing automatic calculation of the feeding speed setting value by using a predetermined conversion function based on input of the welding current setting value and the negative current rate setting value.

REFERENCES:
patent: 5990445 (1999-11-01), Ogasawara et al.
patent: 6376802 (2002-04-01), Tong et al.
patent: 6600135 (2003-07-01), Tong
patent: 5-92269 (1993-04-01), None

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