Laser Micro-Welding Process in which Magnetic Fields are Applied

자기장을 이용한 레이저 마이크로 접합 공정

  • Lee, Woo-Ram (Dept. of Nano IT Fusion Program, Seoul National University of Science, Graduate School of NID Fusion Technology) ;
  • Lee, Chul-Ku (Dept. of Mechanical Engineering, Seoul National University of Science) ;
  • Kim, Joo-Han (Dept. of Mechanical Engineering, Seoul National University of Science)
  • 이우람 (NID 융합기술 대학원 나노 IT 융합프로그램) ;
  • 이철구 (서울과학기술대학교 기계공학과) ;
  • 김주한 (서울과학기술대학교 기계공학과)
  • Received : 2011.06.29
  • Accepted : 2011.10.04
  • Published : 2011.12.01


We have conducted a study on stainless steel laser-welding materials by using a laser beam for the evaluation. Stainless steel used in a rust and excellent thermal deformation has a variety of application. In this study, to improve the mechanical properties of stainless steel, a 50 W laser thermal source is used and magnetic fields are applied, on the basis of suggestions. The mechanical properties and performance are evaluated by performing a numerical analysis, tensile test, and shape, microstructure, and hardness test. The results show that the mechanical properties of improve increased speed the melting pool, tensile strength of 16 kPa rise, run into the melting zone and hardness 7 Hv.

본 연구는 레이저를 이용한 스테인리스강의 용접성 평가에 대한 연구이다. 사용된 금속인 스테인리스 스틸은 녹 및 열적변형이 우수하여 다양한 적용 분야를 가지고 있다. 본 연구는 50 W 레이저 열원에 자기장을 적용하여 스테인리스 스틸에 기계적 성질을 향상 시키는데 목적을 두고 있다. 이에 따른 기계적 성질을 분석하기 위하여 수치적 해석, 인장강도, 형상 및 미세조직, 경도 시험 등을 수행하였다. 결과적으로 수치적 해석을 통한 금속 용융점에서의 속도 증가, 인장강도 약 16 MPa 상승, 용융부에 섞임, 경도 약 7 Hv 상승으로 기계적 성질이 향상 되었다.



Supported by : 한국연구재단


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