Journal of Welding and Joining

  • 제31권1호
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  • Pages.51-57
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  • 2013
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  • 2466-2232(pISSN)
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  • 2466-2100(eISSN)
대한용접접합학회 (The Korean Welding and Joining Society)
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냉연 압연 강판의 레이저 용접 공정 시 발생하는 응력 평가

Evaluation of the Stress Occurring Phenomenon for Cold-Rolled Carbon Steel During a Laser Welding Process

  • 이철구 (서울과학기술대학교 기계.자동차공학과) ;
  • 이우람 (NID 융합기술 대학원 나노.IT 융합프로그램)
  • Lee, Chulku (Dept. of Mechanical and Automotive Engineering, Seoul National University of Science and Technology) ;
  • Lee, Wooram (School of Nano IT Fusion Program, Graduate School of NID Fusion Technology, Seoul National University of Science and Technology)
  • 투고 : 2012.11.28
  • 심사 : 2013.02.22
  • 발행 : 2013.02.28
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초록

Residual stress caused in the weldments with high restraint force are often observed during welding in the weldments of Inner and outdoor materials or radial tanks. The reason is that quantitative analysis about thermal stresses during laser welding is lacking for this weldments. To verify Finite Elements Method (FEM) theory, the temperature was measured with thermocouple in a real time in this paper. Also analysis of the thermal stress for welding condition is performed by Comsol program package on various welding condition in SCP1-S butt welding. The principal stress in laser welding process is seen through the width direction. Also, it was confirmed that a change in base metal by thermal expansion made the stress in width direction stronger. Base metal close to the weld bead as the process progresses to the tensile stress in the compressive stress was varied. It was shown that the change of stress was quantitative from the bead at a certain distance.

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참고문헌

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