The characteristics of bead welding on steel with process parameter during the laser-arc hybrid welding(I) - Effect of flow rate of shield gas and distance between laser and arc -

강의 레이저-아크 하이브리드 용접시 공정변수에 따른 비드용접특성 (I) - 보호가스 유량 및 레이저 아크간 거리의 영향 -

  • Kim, Jong-Do (Division of Marine Engineering, Korea Maritime and Ocean Univ.) ;
  • Myung, Gi-Hoon (Graduate School, Korea Maritime and Ocean Univ.) ;
  • Song, Moo-Keun (Graduate School, Korea Maritime and Ocean Univ.) ;
  • Oh, Jae-Hwan (Sae-Hwa Industry) ;
  • Suh, Jeong (Busan Laser Application Support Center, Korea Institute of Machinery & Materials)
  • 김종도 (한국해양대학교 기관공학부) ;
  • 명기훈 (한국해양대학교 대학원 기관공학과) ;
  • 송무근 (한국해양대학교 대학원 기관공학과) ;
  • 오재환 (세화산업) ;
  • 서정 (한국기계연구원 부산레이저기술지원센터)
  • Received : 2015.04.17
  • Accepted : 2015.04.29
  • Published : 2015.04.30


Recently many studies for improvement of productivity and automation of process are in progress, and among others, laser-arc hybrid welding that combined laser and arc has attracted much attention. Since parameters by interactions as well as the parameters of each heat source should be considered, There are a lot of hardship in actual application, even though many researches have been done so far. Therefore in this study, bead welding was done to examine the effects of the flow rate of shield gas and the distance between laser and arc during laser-arc hybrid welding. As for hybrid heat source, disk laser and MIG were used. As experiment result, sound bead and weld with no defect were formed when the flow rate of front and rear shield gas were respectively 20 l/min and 15 l/min, and deep penetration was done at DLA=3 mm.



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