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Welding process impact on residual stress and distortion

På svenska

Author

  • P. Colegrove
  • C. Ikeagu
  • A. Thistlethwaite
  • S. Williams
  • T. Nagy
  • W. Suder
  • Axel Steuwer
  • T. Pirling

Summary, in English

Residual stress and distortion continue to be important issues in shipbuilding and are still subject to large amounts of research. This paper demonstrates how the type of welding process influences the amount of distortion. Many shipyards currently use submerged arc welding (SAW) as their welding process of choice. In this manuscript, the authors compare welds made by SAW with DC gas metal arc welding, pulsed gas metal arc welding, Fronius cold metal transfer (CMT), autogenous laser and laser hybrid welding on butt welds in 4 mm thick DH36 ship plate. Laser and laser hybrid welding were found to produce the lowest distortion. Nevertheless, a considerable improvement can be achieved with the pulsed gas metal arc welding and CMT processes. The paper seeks to understand the relationship between heat input, fusion area, measured distortion and the residual stress predicted from a simple numerical model, and the residual stresses validated with experimental data.

Publishing year

2009

Language

English

Pages

717-725

Publication/Series

Science and Technology of Welding and Joining

Volume

14

Issue

8

Document type

Journal article

Publisher

Maney Publishing

Topic

  • Natural Sciences
  • Physical Sciences

Keywords

  • Residual stress
  • Welding
  • Modelling
  • Distortion

Status

Published

ISBN/ISSN/Other

  • ISSN: 1362-1718