TY - GEN
T1 - Investigation of fluid flow and heat transfer in 3-D dual-beam laser keyhole welding
AU - Zhou, Jun
AU - Tsai, Hai Lung
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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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U2 - 10.1115/MSEC2010-34252
DO - 10.1115/MSEC2010-34252
M3 - Conference contribution
AN - SCOPUS:82455184911
SN - 9780791849477
T3 - ASME 2010 International Manufacturing Science and Engineering Conference, MSEC 2010
SP - 247
EP - 254
BT - ASME 2010 International Manufacturing Science and Engineering Conference, MSEC 2010
T2 - ASME 2010 International Manufacturing Science and Engineering Conference, MSEC 2010
Y2 - 12 October 2010 through 15 October 2010
ER -