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Method of welding two sides of a joint simultaneously

  • US 9,044,818 B2
  • Filed: 01/04/2008
  • Issued: 06/02/2015
  • Est. Priority Date: 11/08/2007
  • Status: Expired due to Fees
First Claim
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1. A method of arc welding comprising:

  • providing a first current with a first welding waveform to a first electrode;

    providing a second current with a second welding waveform to a second electrode;

    welding a weld joint in an interface between a first base metal and a second base metal, each of the first and second base metals defining a first side and a second side opposite the first side of the base metal, the interface extending from the first side to the second side of at least one of the first and second base metals with the first electrode disposed on the first side of the at least one base metal and simultaneously welding with the second electrode disposed on the second side of the at least one base metal such that the first and second electrodes are disposed across the interface from each other;

    transferring the first current from the first electrode to the second electrode, or transferring the second current from the second electrode to the first electrode; and

    moving the first and second electrodes along the weld joint in a same direction and at or near a same speed.

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