Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Welding Characteristics of Lap-Joint Hastelloy C-276 Sheet Metal Using Nd:YAG Laser

Nd:YAG 레이저를 이용한 하스텔로이 박판의 겹치기 이음 용접 특성

  • Kim, Chan Kyu (School of Mechanical Engineering, Changwon National University) ;
  • Jung, Yoon Gyo (School of Mechanical Engineering, Changwon National University) ;
  • Cho, Young Tae (School of Mechanical Engineering, Changwon National University)
  • Received : 2015.06.29
  • Accepted : 2015.07.16
  • Published : 2015.08.01
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Abstract

Hastelloy C-276 composed of Cr, Mo, and Ni is a versatile, corrosion-resistant alloy with numerous industrial applications including its use in nuclear reactors, general chemical plants, and as a superconducting base material. Of especial significance, it can be used as a thin-sheet type whereby lap-joint welding is occasionally necessary. The main welding problems for thin-sheet metals are deformation and burn-through from an excessive heat input. Laser welding can minimize these problems because it has a high energy density and low heat effect on the base material. In this study, the laser-welding characteristics of lap-joint Hastelloy C-276 sheet metal were determined. The criteria of the laser-welding variables were chosen using a heat-conduction analysis, and the optimal welding parameters were selected by experimenting with an Nd:YAG laser.

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References

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