B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
B23K 9/10 (2006.01) B23K 9/09 (2006.01) B23K 9/095 (2006.01) B23K 9/173 (2006.01) B23K 9/18 (2006.01)
Patent
CA 2478935
An electric arc welding system and method for creating a first AC welding arc with a first current waveform between a first electrode and a workpiece by a first power supply and a second AC welding arc with a second current waveform between a second electrode and a workpiece by a second power supply as the first and second electrodes are moved in unison along a welding path where the first and second power supply each comprising an high speed switching inverter creating its waveform by a number of current pulses occurring at a frequency of at least 18 kHz with the magnitude of each current pulse controlled by a wave shaper and the polarity of the waveforms controlled by a signal. The first and second AC waveforms each have a positive portion and a negative portion and a cycle period of about 10-20 ms and timing circuits for determining the push and pull times between the arcs and a waveform adjusting circuit to limit the push and pull times to less than about 5.0 ms.
Houston William S.
Myers Russell K.
Gowling Lafleur Henderson Llp
Lincoln Global Inc.
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