Effect of Energy Ratio on Dual Beam Laser Welding Characteristics

2017 ◽  
Vol 44 (3) ◽  
pp. 0302003
Author(s):  
马国龙 Ma Guolong ◽  
李俐群 Li Liqun ◽  
陈彦宾 Chen Yanbin
Keyword(s):  
Laser Welding ◽  
Energy Ratio ◽  
Beam Laser ◽  
Dual Beam

Investigation of Fluid Flow and Heat Transfer in 3D Dual-Beam Laser Keyhole Welding

2010 ◽  
Author(s):  
Jun Zhou ◽  
Hai-Lung Tsai
Keyword(s):  
Heat Transfer ◽  
Laser Welding ◽  
Welding Process ◽  
Solidification Process ◽  
Melt Flow ◽  
Single Beam ◽  
Keyhole Welding ◽  
Beam Laser ◽  
Dual Beam ◽  
Laser Keyhole Welding

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.

Effect of dual beam laser welding on microstructure–property relationships of hot-rolled complex phase steel sheets

2017 ◽  
Vol 17 (1) ◽  
pp. 145-153 ◽  
Author(s):  
Mateusz Morawiec ◽  
Maciej Różański ◽  
Adam Grajcar ◽  
Sebastian Stano
Keyword(s):  
Laser Welding ◽  
Complex Phase ◽  
Steel Sheets ◽  
Beam Laser ◽  
Dual Beam ◽  
Hot Rolled

Comparison of single-beam and dual-beam laser welding of Ti–22Al–25Nb/TA15 dissimilar titanium alloys

2017 ◽  
Vol 93 ◽  
pp. 118-126 ◽  
Author(s):  
Junqi Shen ◽  
Bo Li ◽  
Shengsun Hu ◽  
Hao Zhang ◽  
Xianzheng Bu
Keyword(s):  
Laser Welding ◽  
Titanium Alloys ◽  
Single Beam ◽  
Beam Laser ◽  
Dual Beam

Modeling the Transport Phenomena in Moving 3-D Dual-Beam Laser Keyhole Welding

2005 ◽  
Author(s):  
J. Zhou ◽  
H. L. Tsai ◽  
P. C. Wang
Keyword(s):  
Laser Beam ◽  
Laser Welding ◽  
Weld Pool ◽  
Transport Phenomena ◽  
Pool Shape ◽  
Beam Laser ◽  
Dual Beam ◽  
Laser Keyhole Welding ◽  
Weld Pool Shape ◽  
Welding Technique

In recent years, laser-beam welding using two laser beams, or dual-beam laser welding, has become an emerging welding technique. Previous 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 reported that the dual beam laser welding can significantly improve weld quality. However, so far the development of the dual-beam laser welding technique has been limited to the trial-and-error procedure. In this study, the objective is to develop mathematical models and the associated numerical techniques to investigate the transport phenomena, such as heat transfer, metal flow, keyhole formation and weld pool shape evolutions during the moving three-dimensional dual-beam laser keyhole welding. Detailed studies have been conducted to determine the effects of key parameters, such as laser-beam configuration on weld pool fluid flow, weld shape, and keyhole dynamics. 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 predicted and can be well explained by the present model.

Study on Dual Beam Laser Welding of Different Thickness Plates

Applied laser ◽  
2010 ◽  
Vol 30 (6) ◽  
pp. 474-478
Author(s):  
李俐群 Li Liqun ◽  
张新戈 Zhang Xinge ◽  
戴景民 Dai Jingmin ◽  
夏昌兴 Xia Changxing ◽  
陈彦宾 Chen Yanbin
Keyword(s):  
Laser Welding ◽  
Beam Laser ◽  
Dual Beam ◽  
Different Thickness

Dual-Beam Laser Welding of T-Joint of Aluminum-Lithium Alloy 2060-T8/2099-T83

2013 ◽  
Vol 40 (7) ◽  
pp. 0703001 ◽  
Author(s):  
杨武雄 Yang Wuxiong ◽  
张心怡 Zhang Xinyi ◽  
肖荣诗 Xiao Rongshi
Keyword(s):  
Laser Welding ◽  
Lithium Alloy ◽  
Beam Laser ◽  
Aluminum Lithium Alloy ◽  
Dual Beam ◽  
Aluminum Lithium
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