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Weldability Evaluation in Plasma-GMA Hybrid Welding for Al-5083 Using Analysis of Variance

AL5083 합금에 대한 Plasma-GMA 용접에서 분산분석을 이용한 공정변수의 특성 평가

  • Jung, Jin Soo (Department of Mechanical Engineering, Pukung National University) ;
  • Lee, Jong Jung (Department of Mechanical Engineering, Pukung National University) ;
  • Lee, Hee Keun (Industrial Application R&D Institute, DSME Co., LTD.) ;
  • Park, Young Whan (Department of Mechanical Engineering, Pukung National University)
  • 정진수 (국립부경대학교 공과대학 기계공학과) ;
  • 이종중 (국립부경대학교 공과대학 기계공학과) ;
  • 이희근 (대우조선해양(주) 산업기술연구소) ;
  • 박영환 (국립부경대학교 공과대학 기계공학과)
  • Received : 2014.01.20
  • Accepted : 2014.02.19
  • Published : 2014.02.28

Abstract

In this paper, I-butt welding with 6mm thickness using Plasma-GMA welding was carried out. And weld characteristics of the Al-5083 aluminium alloy for Plasma-GMA hybrid welding was evaluated. The orthogonal experimental design was used to investigate the influence of plasma-MIG welding parameters such as plasma current, wire feeding rate, MIG-welding voltage and welding speed on the weld bead geometry and tensile strength using the ANOVA(Analysis of Variation). Then we conducted evaluation of contribution for process parameters. ANOVA results show that bead dimensions are affected by wire feeding speed, welding voltage and welding speed and tensile strength is mainly affected by welding speed and plasma arc current. Tensile strength was decreased by rise in plasma welding current because GMA welding current was decreased by plasma arc.

Keywords

References

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