Improvement of Penetration Characteristics by Plasma Augmented Laser Welding of Small Diameter Stainless Steel Tubes

PALW을 이용한 소경 스테인리스강 튜브의 용입특성 개선

  • 황재련 (현대자동차 금형기술개발팀) ;
  • 윤석환 (한국항공우주연구원 터보펌프개발그룹) ;
  • 나석주 (한국과학기술원 기계공학과)
  • Published : 2004.12.01


Laser welding is obviously an attractive method to join small, thin parts such as small stainless steel tubes, but it is very sensitive to the joint clearance and tolerance, and this makes laser welding difficult to obtain consistent welding qualities over time. Recently, Plasma Augmented Laser Welding(PALW) is being developed to solve these problems. In this study, plasma arc welding(PAW) was introduced to join conventional V-grooved butt joint of thin stainless steel strips using single laser heat source in manufacturing small stainless steel tubes. The effect of the welding speed enhancement is investigated by the experiments. Effects of welding directions, distance between the heat sources and intensity of arc heat source on the optimal welding speed was investigated. Through this research, it was confirmed that PALW process has higher welding speed and robustness than laser welding process.



  1. J.F. Lancaster: The Physics of Welding (2nd edition). Oxford Pergamon Co.. 1986. 306-325
  2. C. Dawes: Laser Welding. Abington Publishing Co.,1992. 26-29
  3. K. Girard. J.M. Jouvard. and Ph Naudy: Study of Voluminal Defects Obserbed in Laser Spot Welding of Tantalum. Appl.Phys. 33 (2000). 2815-2824
  4. C. J. Page. T. Devermann. J. Biffin and N. Blundell:Plasma Augmented Laser Welding and Its Applications.Science and Technology of Welding and Joining. 7-1(2002). 1-10
  5. N. Abe and M. Hayashi: Trends in Laser Arc Combination Welding Methods. Welding International.16-2 (2002). 94-98
  6. H.-S. Kim. Y.-S. Lee. Y.-S. Park. J.-T. Choi and J.-H. Shin: The Study for the Hybrid Laser Arc Welding Application in Shipbuilding, 제 6회 고에너지 연구위원회 연구발표회 논문집, 대한용접학회, 서울, 2003. 8. 28. 52-57 (in Korean)
  7. K. K. Johnson: Introduction to Microjoining. Edison Welding Institute. 1985. 1-10
  8. T. J. Wieting and J. T. Schriempf: Infrared Absorptances of Partially Ordered Alloys at Elevated Temperatures, J. Appl. Phys., 47-9 (1996). 4009-4011