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자기장 영향에 따른 냉연압연 강판의 파이버 레이저 마이크로 접합 공정

A Effects of Magnetic Field For Fiber Laser Micro Welding Process Using Carbon Steel of SCP1-S

  • 이철구 (서울과학기술대학교 기계공학과) ;
  • 이우람 (서울과학대학교 NID 융합기술 대학원)
  • 투고 : 2011.11.03
  • 심사 : 2011.12.28
  • 발행 : 2012.06.15

초록

We have studied on welding dissimilar materials of Carbon steel SCP1-S by using laser beam. In this research we have performed some experiments to know the possibility of welding dissimilar materials using laser beam and magnetic fields by adjusting the power output of 35W laser. Other conditions of the experiments were as follows : the welding speed was varied in the range 10 m/min nitrogen gas was used as shield gas, the flow value of shield gas was ranged 10 L/min. In order to ascertain of the welded surface, we have done the tensile strength testing, the hardness testing and the microscope observation. As a result, we have found that tensile strength was the highest at the condition of the welding speed of 10mm/s, the flow value of 10 L/min, the gap of two materials 0, and the use of nitrogen gas. Above testings have also showed that the tensile strength was generally satisfactory since the penetration of welding was almost complete due to the thinness of the materials. In addition, the formation of the welded area was excellent when it had the highest tensile strength.

키워드

과제정보

연구 과제 주관 기관 : 한국연구재단

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