MAGNETIC CONTROL OF GAS TUNGSTEN-ARC WELDING PROCESS

The possibility of increasing the welding speed in the gas tungsten-arc welding process by using external magnetic fields was investigated. The effects of a constant, transverse magnetic field applied to the arc were studied. Nine percent nickel steel and aluminum alloys types 2021, 6061 and 5454 were the materials used for this investigation. Type 4043 aluminum was used as a filler wire for aluminum and Inconel 625 for the 9% Ni steel weld specimens. Most of the welds were made without the addition of filler metal. All the weld specimens were of bead on plate type. By applying transverse magnetic fields, the maximum welding speed at which undercut-free welds could be obtained was increased considerably. The 9% Ni steel responded exceptionally well to the applied magnetic fields. The magnetic field strength required to produce a satisfactory bead appearance varied with current and travel speed. The arc deflection is consistent with the motor rule. It is suggested that the electromagnetic pumping action of the interacting self and applied magnetic fields produces an improvement in bead appearance.

  • Availability:
  • Corporate Authors:

    American Welding Society

    345 East 47th Street
    New York, NY  USA  10017
  • Authors:
    • Jayarjan, T N
    • Jackson, C E
  • Publication Date: 1972-8

Media Info

  • Pagination: p. 377-385
  • Serial:
    • Welding Journal
    • Volume: 51 N
    • Issue Number: 8
    • Publisher: American Welding Society
    • ISSN: 0043-2296

Subject/Index Terms

Filing Info

  • Accession Number: 00035233
  • Record Type: Publication
  • Source Agency: United States Merchant Marine Academy
  • Files: TRIS
  • Created Date: Oct 27 1972 12:00AM