Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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A Study on the Formation of Cavity and Welding Property in the Laser Welding Fusion Zone between Sintered Segment and Mild Steel Shank

소결체와 저탄소강의 레이저용접시 생성되는 캐비티의 형성과 용접 특성에 대한 연구

  • 조남준 (국민대학교 공과대학 신소재공학부) ;
  • 정우광 (국민대학교 공과대학 신소재공학부) ;
  • 김성욱 (한양대학교 공과대학 신소재공학부) ;
  • 이창희 (한양대학교 공과대학 신소재공학부) ;
  • 김승대 (국민대학교 공과대학 신소재공학부)
  • Published : 2004.04.01
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Abstract

A laser welding has been made between sintered tip of Fe-Co-W and low carbon steel shank for the diamond saw blade. The welding characteristics and formation of defect has been investigated carefully for the weld fusion zone in different welding condition. Full penetration has been observed for the whole range of heat input investigated in the present work. Bead width and under-fill have been increased with the increase of heat input. With increasing of heat input small cavities were decreased while large cavities were increased. The ratio of total cavity area to the entire weld bead area was not changed significantly with change of heat input. Most of cavities were found near the tip, and supposed to be formed from the pore in the tip.

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References

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