Electric heating – Metal heating – By arc
Patent
1997-09-25
1999-11-09
Shaw, Clifford C.
Electric heating
Metal heating
By arc
219 60R, 219 61, 2191377, B23K 912
Patent
active
059819065
ABSTRACT:
A new system for welding sections of pipe together to form a long, continuous pipeline. A welding bug is mounted on a guide track which goes around the circumference of the pipe. The welding bug is provided with a wire feeder, a motor to drive the wire feeder, and driving motor for driving the bug around the track. One may vary the speed of the bug and the wire feeder while the bug is continuously driven around the track. The welding head on the welding bug is powered by a surface-tension-transfer power source. The initial or root pass is made external of the pipe. In one embodiment there is a dual welding wire feeder for driving two welding wires simultaneously at the same speed.
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"A New,Low-Spatter Arc Welding Machine," Elliot K. Stava, Welding Journal
Lincoln Global Inc.
Shaw Clifford C.
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