scholarly journals CFD-based model for melt flow in laser beam welding of aluminium with coaxial magnetic field

2010 ◽  
Vol 5 ◽  
pp. 317-326 ◽  
Author(s):  
M Gatzen ◽  
Z. Tang
Keyword(s):  
Magnetic Field ◽  
Laser Beam ◽  
Laser Beam Welding ◽  
Melt Flow

scholarly journals Reduced finite-volume model for the fast numerical calculation of the fluid flow in the melt pool in laser beam welding

2021 ◽  
Vol 1135 (1) ◽  
pp. 012010
Author(s):  
Jonas Wagner ◽  
Peter Berger ◽  
Philipp He ◽  
Florian Fetzer ◽  
Rudolf Weber ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Laser Beam ◽  
Finite Volume ◽  
Weld Pool ◽  
Welding Speed ◽  
Laser Beam Welding ◽  
Melt Flow ◽  
Finite Volume Model ◽  
Volume Model ◽  
Weld Pool Geometry

Abstract In this paper we propose a reduced two-dimensional finite-volume model for the fast calculation of the melt flow. This model was used to determine the influence of the welding speed, viscosity in the melt and vapour flow inside of the keyhole on the fluid flow field, the temperature distribution, and the resulting weld-pool geometry for laser beam welding of aluminium. The reduced computational time resulting from this approach allows the fast qualitative investigation of different aspects of the melt flow over a wide range of parameters. It was found that the effect of viscosity within the melt is more pronounced for lower welding speeds whereas the effect of friction at the keyhole walls is more pronounced for higher welding speeds. The weld-pool geometry mainly depends on the welding speed.

scholarly journals Influence of oscillating magnetic field on the keyhole stability in deep penetration laser beam welding

2021 ◽  
Vol 135 ◽  
pp. 106715
Author(s):  
Ömer Üstündağ ◽  
Nasim Bakir ◽  
Andrey Gumenyuk ◽  
Michael Rethmeier
Keyword(s):  
Magnetic Field ◽  
Laser Beam ◽  
Laser Beam Welding ◽  
Deep Penetration ◽  
Oscillating Magnetic Field

Influence of steady magnetic field on dynamic behavior mechanism in full penetration laser beam welding

2017 ◽  
Vol 26 ◽  
pp. 399-406 ◽  
Author(s):  
Youmin Rong ◽  
Jiajun Xu ◽  
Haiyin Cao ◽  
Haojie Zheng ◽  
Yu Huang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Laser Beam ◽  
Dynamic Behavior ◽  
Laser Beam Welding ◽  
Full Penetration ◽  
Steady Magnetic Field

Melt flow and thermal transfer during magnetically supported laser beam welding of thick aluminum alloy plates

2018 ◽  
Vol 254 ◽  
pp. 325-337 ◽  
Author(s):  
Jicheng Chen ◽  
Yanhong Wei ◽  
Xiaohong Zhan ◽  
Yi Li ◽  
Wenmin Ou ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Laser Beam ◽  
Laser Beam Welding ◽  
Melt Flow ◽  
Thermal Transfer

scholarly journals Influence of an external applied AC magnetic field on the melt pool dynamics at high-power laser beam welding

2021 ◽  
Vol 1135 (1) ◽  
pp. 012017
Author(s):  
Ömer Üstündağ ◽  
Nasim Bakir ◽  
Andrey Gumenyuk ◽  
Michael Rethmeier
Keyword(s):  
Magnetic Field ◽  
Laser Beam ◽  
High Power ◽  
Oscillation Frequency ◽  
High Power Laser ◽  
Melt Flow ◽  
Power Laser ◽  
Melt Pool ◽  
Welding Processes ◽  
The Magnetic Field

Abstract The study deals with the determination of the influence of an externally applied oscillating magnetic field on the melt pool dynamics in high power laser beam and hybrid laser arc welding processes. An AC magnet was positioned under the workpiece which is generating an upward directed electromagnetic force to counteract the formation of the droplets. To visualise the melt flow characteristics, several experiments were carried out using a special technique with mild steel from S355J2 with a plate thickness of up to 20 mm and a quartz glass in butt configuration. The profile of the keyhole and the melt flow were recorded with a highspeed camera from the glass side. Additionally, the influence of the magnetic field orientation to the welding direction on the filler material dilution on laser hybrid welding was studied with variating oscillation frequency. The element distribution over the whole seam thickness was measured with X-ray fluorescence (XRF). The oscillation frequency demonstrated a great influence on the melt pool dynamics and the mixing of the elements of the filler wire. The highspeed recordings showed, under the influence of the magnetic field, that the melt is affected under strong vortex at the weld root, which also avoids the formation of droplets.

Effect of axial magnetic field in the laser beam welding of stainless steel to aluminum alloy

2016 ◽  
Vol 109 ◽  
pp. 146-152 ◽  
Author(s):  
Rong Chen ◽  
Chunming Wang ◽  
Ping Jiang ◽  
Xinyu Shao ◽  
Zeyang Zhao ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Stainless Steel ◽  
Aluminum Alloy ◽  
Laser Beam ◽  
Axial Magnetic Field ◽  
Laser Beam Welding
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