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Hybrid laser welding techniques for enhanced welding efficiency
ICALEO '96: Proceedings of the Laser Materials Processing Conference, 1996One of the remarkable characteristics of the laser beam welding process is its thin deep welding seam. This thin seam is produced as a result of the high welding speed and the low heat input, leading to a low distortion. However, the overall electrical efficiency of a CO2-laser is in the range of 5-7% and the efficiency of a Nd:YAG-laser is only ...
E. Beyer, B. Brenner, R. Poprawe
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Journal of Laser Applications, 2017
The welding of thick metal sheets has become increasingly important for structural steelwork engineering applications (e.g., pipe- or crane building). Nowadays, welding tasks are performed using a time-consuming conventional submerged arc welding process.
Uwe Reisgen +2 more
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The welding of thick metal sheets has become increasingly important for structural steelwork engineering applications (e.g., pipe- or crane building). Nowadays, welding tasks are performed using a time-consuming conventional submerged arc welding process.
Uwe Reisgen +2 more
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Bifocal hybrid laser welding - Fillet welds of aluminium
ICALEO 2011: 30th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing, 2011Shortage of resources demands a consequent lightweight design with aluminum. Process stability and a high seam quality in welding processes of this material are difficult to achieve especially for hard to weld materials like EN AW-6060. Bifocal hybrid laser welding (BHLW) demonstrates how this material can be welded reliably without defects in a butt ...
M. R. Kronthaler +2 more
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Hybrid realization of fillet weld
COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2018Purpose A model of hybrid fillet welding is built and solved. No additional material (welding rod, etc.) is used. Heating of the welded parts is realized by laser beam with induction preheating and/or postheating. The purpose of these operations is to reduce the temperature gradient in welded parts in the course of both heating and cooling, which ...
Kotlan, Václav +3 more
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Study of weld formation characteristics in laser-arc hybrid welding
International Journal of Modern Physics B, 2022The laser-arc hybrid welding was carried out on the marine-use steel, and the effects of primary parameters on weld behavior were investigated. The results show that the weld penetration increased gradually with the increase of laser power. Meanwhile, superior weld formation, penetration and reinforcement were achieved when laser and wire distance was
Hongwei Sun +5 more
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Welding Phenomena in Hybrid Laser-Rotating Arc Welding Process
Materials Science Forum, 2007Hybrid laser-rotating arc welding (HLRAW) process was designed by combining the laser beam welding (LBW) process with the rotating gas metal arc welding (RGMAW) process. In this study, comparing with conventional HLAW, weld bead characteristics as a function of the various process parameters were evaluated for HLRAW.
Hyun Byung Chae +3 more
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Weld microstructure and shape of laser–arc hybrid welding
Science and Technology of Welding and Joining, 2008A series of CO2 laser–metal inert gas arc hybrid welding experiment was carried out to investigate the effects of laser/arc energy ratio and groove parameters on the shape and microstructure of hybrid weld. The results showed that increasing arc current and groove cross-section area can reduce dimension difference of laser zone and arc zone by ...
M. Gao, X. Y. Zeng, Q. W. Hu, J. Yan
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Laser Welding and Hybrid Welding of Aluminium Alloys
2010Laser welding of aluminium alloys was performed with high power YAG, fiber or disk laser. Interaction between laser and plume, laser absorption, welding phenomena and weldability were investigated by using such lasers. The absorption of a focused fiber laser in aluminum alloy was found to be higher at high powers and low welding speeds than that in ...
Katayama Seiji +2 more
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Ultrasonic Welding of Hybrid Joints
JOM, 2012A central research field of the Institute of Materials Science and Engineering at the University of Kaiserslautern (WKK), Germany, is the realization of innovative hybrid joints by ultrasonic metal welding. This article gives an overview of suitable ultrasonic welding systems as well as of essential machine and material parameters, which influence the ...
Wagner, Guntram +2 more
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Modeling of Weld Beads for Laser-GMA Hybrid Welding
Key Engineering Materials, 2007For laser-GMA hybrid welds, the relationship between the process parameters and bead shapes was investigated by using the experimental design and the non-linear regression. The weld beads were fitted by two quadratic functions. By the statistical analysis, the primary bead was mainly affected by GMA welding parameters and the root bead was mainly by ...
Cheol Hee Kim +3 more
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