Results 161 to 170 of about 2,153 (189)

Laser-MIG Hybrid Welding of Aluminium Alloys

Welding in the World, 2006
High-power laser welding is expected to achieve much higher productivity than conventional joining techniques. However, the gap tolerance of laser welding is smaller than that of conventional MIG welding because of its high concentrated energy input.
K. Shibata, H. Sakamoto, T. Iwase
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The influence of arc transfer mode in hybrid laser-mig welding

Journal of Materials Processing Technology, 2007
Abstract In the recently developed welding process, a Laser beam and an electric arc are coupled in order to combine the positive aspects of each technology: high speed, low thermal load and high seam depth, all typical features of the Laser; low cost and ability to withstand poor edge preparation, typical of GMAW arc welding.
CAMPANA, GIAMPAOLO, FORTUNATO, ALESSANDRO, ASCARI, ALESSANDRO, TANI, GIOVANNI, TOMESANI, LUCA   +4 more
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Hybrid laser-MIG welding of aluminum alloys: The influence of shielding gases

Applied Surface Science, 2009
Abstract In this paper, laser-GMAW hybrid welding technologies of light metals are investigated by focusing particularly on shielding gas related problems such as distribution on the welding zone, mixtures and flow. In particular, a Computational Fluid Dynamics (CFD) software was used with the aim to investigate the effect on gas distribution and ...
CAMPANA, GIAMPAOLO, ASCARI, ALESSANDRO, FORTUNATO, ALESSANDRO, TANI, GIOVANNI   +3 more
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Numerical simulation and testing of laser-MIG hybrid-welding angle-structure sheets

Applied Optics, 2023
Numerical simulation and experimental investigation of laser-MIG hybrid angle-welding low-carbon 1.5-mm-thin SPCC steel sheets are presented in this work. The transient simulation analysis provides an access to the thermal-fluid phenomena prediction by employing a hybrid three-dimensional heat source model. Special attention is paid to the melt dynamic
C Y, Cui, L, Chen, J, Yang, H H, Xu, W L, Zhang, X G, Cui, J Z, Lu   +6 more
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Penetration and welding phenomena in YAG laser-mig hybrid welding of aluminum alloy

ICALEO 2004: 23rd International Congress on Laser Materials Processing and Laser Microfabrication, 2004
Hybrid welding combining YAG laser and MIG arc was carried out on aluminum alloy, and the effects of various welding conditions were investigated. The optimum distances between the laser-focused point and the MIG wire target for deeper penetration were found to be about 2 to 4mm depending upon the MIG current of 60 to 240 A.
Satoru Uchiumi, Jing-bo Wang, Seiji Katayama, Masami Mizutani, Toshinori Hongu, Kouji Fujii   +5 more
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Numerical simulation of droplet shapes in laser-MIG hybrid welding

Optics & Laser Technology, 2017
Abstract A three-dimensional finite element model based on minimum energy principle is developed to simulate the droplet transfer process in laser-MIG hybrid welding. The energy manifestations of all forces that determine droplet shapes are considered in this model, and the model has been used to predict droplet shapes. Offset of droplet centroid and
Zhenglong Lei, Longchang Ni, Bingwei Li, Kezhao Zhang   +3 more
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Study of laser MIG hybrid welded AZ31 magnesium alloy

Science and Technology of Welding and Joining, 2009
The laser metal inert gas (MIG) hybrid welded AZ31 magnesium alloy is discussed in weld shape, microstructure characteristics and mechanical properties in comparison of single laser and arc welding. The stable MIG arc, reliable droplet transfer and regular weld that are hardly obtained in single MIG welding can be obtained in hybrid welding by laser ...
M. Gao, X. Y. Zeng, B. Tan, J. C. Feng
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Investigation of mixing phenomena in hybrid laser-MIG keyhole welding

ICALEO 2004: 23rd International Congress on Laser Materials Processing and Laser Microfabrication, 2004
In laser keyhole welding of alloys, low melting-point elements, such as aluminum or magnesium, can be easily vaporized and lost from the weld region, leading to the changes of composition, mechanical properties, and the susceptibility of hard cracking and other defects.
Jun Zhou, Hai-Lung Tsai, Pei-Chung Wang
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THERMO-MECHANICAL MODELING OF LASER-MIG HYBRID WELDING (LMHW)

AIP Conference Proceedings, 2011
Hybrid welding is a combination of two different technologies such as laser (Nd: YAG, CO2…) and electric arc welding (MIG, MAG / TIG …) developed to assemble thick metal sheets (over 3 mm) in order to reduce the required laser power. As a matter of fact, hybrid welding is a lso used in the welding of thin materials to benefit from process, deep ...
Ludovic Kounde, Thierry Engel, Jean-Michel Bergheau, Didier Boisselier, Francisco Chinesta, Yvan Chastel, Mohamed El Mansori   +6 more
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Study of phenomenon of fibre-laser-MIG/MAG-hybrid-welding

ICALEO 2008: 27th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing, 2008
The laser hybrid welding processes have quite a few successful applications already in use for example in automotive, ship building and construction industry. The current development steps of high power lasers using optical fiber for beam transportation are widened the applicability of laser hybrid welding ever more and also to thick section welding.
Heidi Piili, Antti Salminen, Petri Harkko, Janne Lehtinen   +3 more
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