Results 231 to 240 of about 7,249 (281)

Bifocal hybrid laser welding - Fillet welds of aluminium

ICALEO 2011: 30th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing, 2011
Shortage 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, S. Spengler, M. F. Zaeh   +2 more
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Weld microstructure and shape of laser–arc hybrid welding

Science and Technology of Welding and Joining, 2008
A 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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Hybrid realization of fillet weld

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2018
Purpose 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, Hamar, Roman, Šroubová, Lenka, Doležel, Ivo   +3 more
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Hybrid welding technologies and welded joints

Welding International, 2013
Hybrid welding technologies (e.g. laser-arc, laser-plasma, light laser, submerged laser-arc and permanent joints) and their special features and applications are described.
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Laser Welding and Hybrid Welding of Aluminium Alloys

2010
Laser 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, Kawahito Yousuke, Mizutani Masami   +2 more
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Ultrasonic Welding of Hybrid Joints

JOM, 2012
A 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, Balle, Frank, Eifler, Dietmar   +2 more
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Review of laser hybrid welding

Journal of Laser Applications, 2005
In this article, an overview of the hybrid welding process is given. After a short historic overview, a review of the fundamental phenomenon taking place when a laser (CO2 or Nd:YAG) interacts in the same molten pool as a more conventional source of energy, e.g. tungsten in-active gas, plasma, or metal inactive gas/metal active gas. This is followed by
Claus Bagger, Flemming O. Olsen
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Welding quality evaluation of resistance spot welding based on a hybrid approach

Journal of Intelligent Manufacturing, 2020
In this investigation, the welding quality of TC2 titanium alloy with 0.4 mm thickness was predicted using two regression models and an artificial neural network model. The welding current and the voltage between the upper and lower electrodes were obtained using the Rogowski coil and a line voltage sensor.
Dawei Zhao, Mikhail Ivanov, Yuanxun Wang, Wenhao Du   +3 more
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Laser-Arc Hybrid Welding

Solid State Phenomena, 2007
Hybrid welding of stainless steels or aluminum alloys was performed using the heat sources of YAG laser and TIG, or YAG laser and MIG, respectively. The effects of welding conditions and melt flows on penetration depth, weld bead geometry and bubble/porosity formation were investigated with X-ray transmission real-time observation method.
Seiji Katayama, Yasuaki Naito, Satoru Uchiumi, Masami Mizutani   +3 more
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Fatigue of welded hybrid‐joints

Materialwissenschaft und Werkstofftechnik, 2005
AbstractOnly for steels up to grade S690QL the well‐known fact is confirmed that the fatigue strength of welded joints is independent of the material. For higher strength steels a remarkable reduction of the fatigue strength is found. Some advice is given for designers in which situations the one or the other of the various approaches for the ...
R. Schliebner, M. Vormwald
openaire   +1 more source