Proceedings of the Korea Committee for Ocean Resources and Engineering Conference (한국해양공학회:학술대회논문집)

Korean Society of Ocean Engineers (한국해양공학회)
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A Study on the Distribution of Welding Residual Stresses in $2\frac{1}{4}Cr-1Mo$ Steel by $CO_2$ Laser Welding

수치해석에 의한 $2\frac{1}{4}Cr-1Mo$강 $CO_2$ 레이저 용접부의 잔류응력 분포 특성에 관한 연구

  • Bang, Han-Sur (Faculty of Naval Architectural Engineering, Chosun University) ;
  • Kim, Young-Pyo (Faculty of Naval Architectural Engineering, Graduate school of Chosun University) ;
  • Kim, Hyoung (Faculty of Naval Architectural Engineering, Graduate school of Chosun University) ;
  • Yu, Suk-Min (Faculty of Naval Architectural Engineering, Graduate school of Chosun University)
  • 방한서 (조선대학교 선박해양공학과) ;
  • 김영표 (조선대학교 선박해양공학과 대학원) ;
  • 김형 (조선대학교 선박해양공학과 대학원) ;
  • 유석민 (조선대학교 선박해양공학과 대학원)
  • Published : 2003.05.23
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Abstract

In recent, an application of high energy density beam we/ding is increasing to obtain the high quality in weldments. Laser welding, especially, has been recognized as an useful method and its beam power has also increased according to the development of relevant technology. However, welding method in the fields of power plant is conservative because their structures have required to endure high temperature and pressure. So, authors conduct the numerical simulation in order to consider the possibility of laser welding on the material of the pressure vessels ($2\frac{1}{4}Cr-1Mo$ steel). As a result of this study, we can confirm the advantages of laser welding and obtain useful information for the experiments of weldability.

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