Dual-beam laser welding has become an emerging joining technique. Studies have demonstrated that it can provide benefits over conventional single-beam laser welding, such as increasing keyhole stability, slowing down cooling rate and delaying the humping onset to a higher welding speed. It is also reported to be able to improve weld quality significantly. However, due to its complexity the development of this promising technique has been limited to the trial-and-error procedure. In this study, mathematical models are developed to investigate the heat transfer, melt flow, and solidification process in three-dimensional dual-beam laser keyhole welding. Effects of key parameters, such as laser-beam configuration on melt flow, weld shape, and keyhole dynamics are studied. Some experimentally observed phenomena, such as the changes of the weld pool shape from oval to circle and from circle to oval during the welding process are analyzed in current study.
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ASME 2010 International Manufacturing Science and Engineering Conference
October 12–15, 2010
Erie, Pennsylvania, USA
Conference Sponsors:
- Manufacturing Engineering Division
ISBN:
978-0-7918-4947-7
PROCEEDINGS PAPER
Investigation of Fluid Flow and Heat Transfer in 3D Dual-Beam Laser Keyhole Welding Available to Purchase
Jun Zhou,
Jun Zhou
Penn State University, The Behrend College, Erie, PA
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Hai-Lung Tsai
Hai-Lung Tsai
Missouri University of Science & Technology, Rolla, MO
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Jun Zhou
Penn State University, The Behrend College, Erie, PA
Hai-Lung Tsai
Missouri University of Science & Technology, Rolla, MO
Paper No:
MSEC2010-34252, pp. 247-254; 8 pages
Published Online:
April 11, 2011
Citation
Zhou, J, & Tsai, H. "Investigation of Fluid Flow and Heat Transfer in 3D Dual-Beam Laser Keyhole Welding." Proceedings of the ASME 2010 International Manufacturing Science and Engineering Conference. ASME 2010 International Manufacturing Science and Engineering Conference, Volume 2. Erie, Pennsylvania, USA. October 12–15, 2010. pp. 247-254. ASME. https://doi.org/10.1115/MSEC2010-34252
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