Results 81 to 90 of about 3,043,897 (201)

Modélisation du procédé de soudage hybride Arc / Laser par une approche level set application aux toles d'aciers de fortes épaisseurs A level-set approach for the modelling of hybrid arc/laser welding process application for high thickness steel sheets joining

MATEC Web of Conferences, 2013
Le procédé de soudage hybride Arc/Laser est une solution aux assemblages difficiles de tôles de fortes épaisseurs. Ce procédé innovant associe deux sources de chaleur : un arc électrique produit par une torche MIG et une source laser placée en amont.
Desmaison Olivier, Bellet Michel, Guillemot Gildas   +2 more
doaj   +1 more source

Multi-pass laser welding with cut-wire particles of 50 mm thick steel plates

Journal of Alloys and Metallurgical Systems
Multi-pass laser welding with filler wire feeding shows significant potential for welding thick plates. However, this method faces challenges due to the need for edge preparation and stringent control of parameters such as wire feed speed and the ...
Mohamed Wahba, Masami Mizutani, Seiji Katayama   +2 more
doaj   +1 more source

The effect of fit-up geometry on melt flow and weld quality in laser hybrid welding

, 2013
Hybrid laser-arc welding has a good tolerance to poor fit up as compared to simple laser welding. For a butt joint, the joint fit-up variations can be reduced to two local properties: the gap width and the vertical edge mismatch.
P. Norman, A. Yañez, Yañez, Armando,, J. Lamas, Norman, Peter,, Powell, John,, J. Powell, Lamas, Javier,, Karlsson, Jan Erik,, Kaplan, Alexander F. H.,, A. F. H. Kaplan, J. Karlsson   +11 more
core   +1 more source

Improving weld quality by laser re-melting

, 2014
Laser welding, arc welding, and laser-arc hybrid welding can all result in undercut and varying penetration. In some cases, it is technically and commercially viable to reduce undercut at the weld cap and smooth out the weld root profile by defocussing ...
John Powell, Powell, John,, Jan Frostevarg, Frostevarg, Jan,, Kaplan, Alexander F. H.,, Torkamany, Mohammad J.,, Mohammad J. Torkamany, Alexander F. H. Kaplan   +7 more
core   +1 more source

Molten pool dynamic behavior and arc characteristics in laser-TIG hybrid welding of Invar steel

Hanjie xuebao
Invar steel has an extremely low coefficient of thermal expansion, making it widely used in the manufacturing of molds for aerospace composite materials.
Sen WU, Fei ZHAO, Shuili GONG, Lifeng MA, Haiyan ZHAO, Wei ZHANG   +5 more
doaj   +1 more source

Achieving aerospace standard porosity levels when welding thin and thick-section aluminium using fibre-delivered lasers : executive summary [PDF]

Environmental and commercial pressures have forced the aerospace industry to look at alternatives to riveting for the manufacture of aluminium aircraft structures.
Verhaeghe, Ing G.
core  

Recent progress and innovative solutions for laser-arc hybrid welding

, 2022
S.7-10The idea of coupling a laser beam with a gas metal arc (GMA) has significantly expanded the original welding application range of lasers, providing improved robustness, efficiency and quality of the welding process.
Petring, D., Fuhrmann, C.
core   +1 more source

Study on droplet transfer behavior and porosity defects in narrow-gap laser–arc hybrid welding of titanium alloy

Hanjie xuebao
In narrow-gap laser–arc hybrid welding, the droplet transfer behavior indirectly affects the formation of porosity defects by influencing the molten pool disturbance and keyhole stability.
Fashuai XIONG, Chuang CAI, Jie YU, Zilin CHEN, Zhenxin LI, Ping TANG, Hui CHEN   +6 more
doaj   +1 more source

Influence of welding sequences on residual stress and deformation of U-rib components fabricated by laser-arc hybrid welding

Journal of Materials Research and Technology
This paper aims to investigate the influence of welding sequences on welding induced residual stress and deformation of U-rib components fabricated by laser-arc hybrid welding through experimental and numerical methods.
Shaoning Geng, Yuantai Li, Ping Jiang, Yilin Wang, Jun Jin, Chu Han   +5 more
doaj   +1 more source

Research Status and Progress of All-Position Narrow-Gap GMAW for Pipelines

Applied Sciences
During the all-position narrow-gap welding process of pipelines, welding defects tend to occur in non-flat welding positions, constraining the quality and efficiency of pipeline construction.
Wenji Liu, Qing Li, Jianfeng Yue, Peng Zhu, Bing Li   +4 more
doaj   +1 more source