Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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Electrode Life Test of Resistance Spot Welding on Mg Alloy Using Dome Type Electrode

돔형 전극을 사용한 마그네슘 합금 저항 점용접의 전극 수명 평가

  • 최동순 (한국생산기술연구원 용접접합그룹) ;
  • 황인성 (한국생산기술연구원 용접접합그룹) ;
  • 김동철 (한국생산기술연구원 용접접합그룹) ;
  • 강문진 (한국생산기술연구원 용접접합그룹)
  • Received : 2013.03.06
  • Accepted : 2013.12.03
  • Published : 2013.12.31
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Abstract

Magnesium alloy is used on parts of aircraft and electronic equipment because of the highest specific strength among the common metal materials. Recently, studies about appling magnesium alloy sheet to automotive bodies are on the increase rapidly. For application to automotive bodies, researches about characteristics of resistance spot welding of magnesium alloy sheet are essential. Magnesium alloy has low boiling point, so getting sound bead shape is difficult when appling varies welding processes. Resistance spot welding is also particular about setting optimum welding conditions because of spatter generation, pores and cracks occurrence in nugget. And life of electrodes is very short because of alloying with copper that main material of electrodes. This requires frequent dressing and replacement of electrodes and decrease in productivity of resistance spot welding on magnesium alloy. Therefore in this study, for effective analysis of changes in tensile shear load and nugget size during electrode life test, evaluate detail characteristics of resistance spot welding on magnesium alloy sheet using dome type electrode.

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References

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Cited by

  1. Effects of Electrode Shape on Electrode Life of Resistance Spot Welding of Mg Alloy vol.22, pp.4, 2014, https://doi.org/10.7467/KSAE.2014.22.4.030
  2. Resistance Spot Welding Characteristics of Mg Alloy Applying Current Waveform Control vol.32, pp.2, 2014, https://doi.org/10.5781/JWJ.2014.32.2.70