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Enhanced arc control for magnetically impelled butt welding

  • US 9,669,483 B2
  • Filed: 01/16/2014
  • Issued: 06/06/2017
  • Est. Priority Date: 01/16/2014
  • Status: Expired due to Fees
First Claim
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1. An arc control method for magnetically impelled butt welding, comprising:

  • bringing ends of tubulars to be welded adjacent each other for an initial positioning of major longitudinal axes to create a gap therebetween;

    producing a condition to create an arc that crosses said gap;

    applying a magnetic field to said gap;

    moving said arc around on said ends of said tubulars;

    angularly skewing said major longitudinal axis of at least one of said tubulars from said initial positioning to obtain a different relative positioning between said tubulars to control the path of said arc on said ends of said tubulars; and

    butt welding said tubulars.

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