Full Content is available to subscribers

Subscribe/Learn More  >

Numerical Simulation of Weld Thermal History for Pulsed GMAW Process

[+] Author Affiliations
Yaoshan Chen, Yong-Yi Wang

Center for Reliable Energy Systems, Dublin, OH

James Gianetto

CANMET Materials Technology Lab, Ottawa, Ontario, Canada

Paper No. IPC2008-64632, pp. 437-443; 7 pages
  • 2008 7th International Pipeline Conference
  • 2008 7th International Pipeline Conference, Volume 3
  • Calgary, Alberta, Canada, September 29–October 3, 2008
  • Conference Sponsors: International Petroleum Technology Institute and the Pipeline Division
  • ISBN: 978-0-7918-4859-3 | eISBN: 798-0-7918-3835-8
  • Copyright © 2008 by ASME and Her Majesty the Queen in Right of Canada, as represented by the Minister of Natural Resources


Pulsed gas metal arc welding (P-GMAW) is one of the most effective joining methods used for mainline field girth welding of large diameter, long distance pipelines. Single torch and single wire P-GMAW utilizing narrow-groove weld geometry has been applied extensively in both onshore and offshore pipeline constructions. The industry has a desire to increase welding productivity by the development and application of multi-wire variants of P-GMAW such as tandem-wire and dual-torch processes. These varieties of P-GMAW processes have their unique characteristics which affects the heat transfer and resulting microstructures in the heat-affected zone (HAZ) and deposited weld metal. These unquie features need to be considered in the welding heat transfer analyses. This paper presents heat transfer analyses of various P-GMAW processes with a consistent heat source model and its associated thermal boundary conditions. The objective of the study is to extend the thermal analysis procedures of single-wire P-GMAW to the wider range of P-GMAW processes. To validate the thermal analysis models, the predicted temperature histories (cycles) and cooling times for welds produced under different pre-heat temperatures and different P-GMAW processes were compared with experimentally measured thermal histories. Generally good agreement between the predicted and measured thermal histories was achieved. The areas of further refinement of the thermal analysis models and experimental measurment procedures were identified.

Copyright © 2008 by ASME and Her Majesty the Queen in Right of Canada, as represented by the Minister of Natural Resources



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In