- Volume 40 Issue 10
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Butt Weldability of Shipbuilding Steel AH36 Using Laser-Arc Hybrid Welding
조선용 강판 AH36의 레이저-아크 하이브리드 용접시 맞대기 용접 특성
- Kim, Jong Do (Division of Marine Engineering, Korea Maritime and Ocean Univ.) ;
- Myoung, Gi Hoon (Graduate School, Korea Maritime and Ocean Univ.) ;
- Suh, Jung (Busan Laser Application Support Center, Korea Institute of Machinery & Materials)
- Received : 2016.05.31
- Accepted : 2016.07.27
- Published : 2016.10.01
The purpose of this study is to improve productivity by implementing one-pass full penetration welding using laser-arc hybrid welding for AH36. On increasing the thickness of the plate, a higher power of laser and arc was required to obtain full penetration. However, increasing the power of heat source caused undercut defects at both ends of the bead. This undercut was prevented by controlling the parameters of welding voltage and pulse correction. Hardness measurement and tensile test were conducted to apprehend the mechanical properties of weld. Also, by carrying out the microstructure observation for laser and arc regions, microstructural properties were understood.
- Dilthey, 2006, "Industrial Application of Laser-GMA Welding Technology in Automotive and Shipbuilding Industry," Proc. of the 5 Int. Conf., Beam Technology and Laser Application, pp. 10-18.
- Li, Z. and Wang, W., 2010, "A Study of The Radiation of a Nd: YAG Laser-MIG Hybrid Plasma," Optic & Laser Technology, Vol. 42, pp. 132-140. https://doi.org/10.1016/j.optlastec.2009.05.010
- Tani, G., 2007 "The Influence of Shielding Gas in Hybrid Laser-MIG Welding," Applied Surface Science, Vol. 253, pp. 8050-8053. https://doi.org/10.1016/j.apsusc.2007.02.144
- Kristensen, J. K., "Recent Trends in Laser Based Welding of Structural Steels as Well as Properties of Hybrid YAG-Laser/MAG Welds," Force Technology.
- Gao, M., 2012, "Process and Joint Characterization of Laser-MIG Hybrid Welding of AZ31 Magnesium Alloy," Journal of Materials Processing Technology, Vol. 212, pp. 1338-1346. https://doi.org/10.1016/j.jmatprotec.2012.01.011
- Thomy, C. and Seefeld, T., 2005, "Laser-GMA Hybrid Welding with Various Laser System," IIW Doc.