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Statistical modelling of weld bead geometry in oscillating arc narrow gap all-position GMA welding

  • W. H. Xu
  • S. B. LinEmail author
  • C. L. Fan
  • X. Q. Zhuo
  • C. L. Yang
ORIGINAL ARTICLE

Abstract

In this work, the oscillating arc narrow gap all-position gas metal arc (GMA) welding process was developed to improve efficiency and quality in the welding of thick-walled pipes. The statistical models of narrow gap all-position GMA weld bead geometry were developed using response surface methodology (RSM) based on central composite design (CCD). The developed models were checked for their adequacy and significance by ANOVA, and the effects of wire feed rate, travel speed, dwell time, oscillating amplitude and welding position on weld bead dimension were studied. Finally, the optimal welding parameters at welding positions of 0° to 180° were obtained by numerical optimization using RSM.

Keywords

Narrow gap welding All-position welding GMA welding Weld bead geometry CCD RSM 

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Copyright information

© Springer-Verlag London 2014

Authors and Affiliations

  • W. H. Xu
    • 1
  • S. B. Lin
    • 1
    Email author
  • C. L. Fan
    • 1
  • X. Q. Zhuo
    • 1
  • C. L. Yang
    • 1
  1. 1.State Key Laboratory of Advanced Welding and JoiningHarbin Institute of TechnologyHarbinPeople’s Republic of China

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