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A Novel Technological Assessment for Welding Heavy Wall Stainless Steel

[+] Author Affiliations
Barry Messer, Shawn Seitz

Fluor Canada, Ltd., Calgary, Alberta, Canada

Charles Patrick

Fluor Corporation, Sugar Land, TX

Ken Armstrong

PCL Constructors, Inc., Edmonton, Alberta, Canada

Paper No. PVP2005-71412, pp. 527-533; 7 pages
doi:10.1115/PVP2005-71412
From:
  • ASME 2005 Pressure Vessels and Piping Conference
  • Volume 6: Materials and Fabrication
  • Denver, Colorado, USA, July 17–21, 2005
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4191-X | eISBN: 0-7918-3763-7
  • Copyright © 2005 by ASME

abstract

In an effort to maximize quality and production in both field and shop fabrication while minimizing cost, Fluor and PCL, in a joint venture, assessed new welding technology comparing power sources, arc transfer modes, and shielding gas mixtures using various semi-automatic welding processes. The results were combined with “No-Backing Gas” (NBG) root technique to provide ASME code acceptable welds with excellent corrosion and crack resistance for type 321 Stainless Steel [1]. Welds were deposited in approximately one third the time commonly demanded by conventional welding. The strategies for the selection of a welding power source, arc transfer modes, shielding gas mixtures, and the successful bridging from quality and integrity validation to shop and field implementation are discussed.

Copyright © 2005 by ASME

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