Method used in gas-shielded metal-arc welding

Details Method used in gas-shielded metal-arc welding Method used in gas-shielded metal-arc welding

2006-09-05

2006-09-05

Shaw, Clifford C. (Department: 1725)

Electric heating

Metal heating

By arc

C219S130210

Reexamination Certificate

active

07102100

ABSTRACT:
The invention relates a method for gas-shielded metal-arc welding during the re-strike during the welding process. It is object of the invention to provide a gas-shielded metal-arc welding method to permit as low an energy intake as possible in the short-circuit phase for the arc welding. According to the invention, this object is solved by a method, characterized in that at the beginning of a short-circuit, a control is activated and remains active for the duration of the short-circuit, which increases an energy intake (phase A) when a characteristic threshold value S1is fallen short of, and terminates the energy intake when a threshold value S2is reached, and than lowers the energy intake (phase B).

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S. B. Chen et al., “Intelligent Methodology for Sensing, Modeling and Control of Pulsed GTAW Part 2—Butt Joint Welding”, Welding Research Supplement, Jun. 2000, pp. 164-174.

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