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Welding process impact on residual stress and distortion

In English

Författare

  • 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.

Publiceringsår

2009

Språk

Engelska

Sidor

717-725

Publikation/Tidskrift/Serie

Science and Technology of Welding and Joining

Volym

14

Issue

8

Dokumenttyp

Artikel i tidskrift

Förlag

Maney Publishing

Ämne

  • Natural Sciences
  • Physical Sciences

Nyckelord

  • Residual stress
  • Welding
  • Modelling
  • Distortion

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1362-1718