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Fiber laser welding and suppression of spatters
ICALEO 2018: 37th International Congress on Applications of Lasers & Electro-Optics, 2018Welding with fiber lasers causes some welding defects due to generation of many spatters. In sight of the production technology, suppression of those is necessary for improving production efficiency and assuring their quality. We tried to suppress the spatters by using beam mode controlled technology and succeed with the stainless steel and the pure ...
Tomomichi Yasuoka +3 more
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Deep penetration laser welding of austenitic stainless steel thick-plates using a 20 kW fiber laser
, 2020The deep penetration laser welding of a thick section of austenitic stainless steel by a 20 kW laser is systematically evaluated. The welding phenomena of bead-on-plate and butt-welding of 20 and 30 mm thick steel plates are examined.
C. Fang +5 more
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Weld depth control in fiber laser welding of thin metal sheets
ICALEO 2008: 27th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing, 2008Laser beam welding of electrical connections or sealing of casings are typical applications in the field of precision engineering. Controlling the shape of the welded connections is an important issue in this context. A common requirement is for example to achieve a specific welding depth in order not to damage functional layers or contaminate the ...
Jens Gedicke +4 more
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Ultra high power (100 kW) fiber laser welding of steel.
Optics Letters, 2018A 100 kW fiber laser was first used to weld steel. Speeds at the range between 0.3 and 5.0 m/min were tested, and the maximum weld bead depth of 70 mm was achieved by single pass welding.
Y. Kawahito +3 more
semanticscholar +1 more source
Phenomena of welding with high-power fiber laser
ICALEO 2006: 25th International Congress on Laser Materials Processing and Laser Microfabrication, 2006This study was performed with the objective of obtaining a fundamental knowledge of welding phenomena and mechanisms in producing deep and narrow weld beads in Type 304 stainless steel with a high-power fiber laser beam. Welding penetrations and defects were classified in weld beads made with the laser of about 115 and 360 Pm in beam diameter at the ...
Keisuke Kinoshita +3 more
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Micro welding with pulsed single mode fiber lasers
ICALEO 2004: 23rd International Congress on Laser Materials Processing and Laser Microfabrication, 2004Many applications in the electronics, telecom and medical device industry require smaller and smaller laser joining areas. In order to adapt the processing speed to the average laser power pulsed laser operation is desired. Gated CW fiber lasers could provide pulsed laser operation with sufficient power stability.
Klaus F. Kleine +2 more
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Effect of heat input on HAZ softening in fiber laser welding of 22MnB5 steel
Optics & Laser Technology, 2023Oğuz Tunçel +2 more
semanticscholar +1 more source
Investigation on keyhole mode fiber laser welding of SS 316 in a self-protected atmosphere
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2019This work focuses on examining the influence of welding parameters under different welding atmospheres and evaluation of keyhole profile during fiber laser welding operation.
Sohini Chowdhury +2 more
semanticscholar +1 more source
Fiber laser welding of 780MPa high strength steel
ICALEO 2006: 25th International Congress on Laser Materials Processing and Laser Microfabrication, 2006A 2kW Ytterbium fiber laser, YLR-2000, was used for welding of 780MPa grade high strength steel. In the present work, this high strength steel is a kind of heat rolled, fine microstructure low carbon high strength steel used for welded constructions.
Zhongjie Liu +2 more
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Humping in welding with single-mode fiber lasers
ICALEO 2006: 25th International Congress on Laser Materials Processing and Laser Microfabrication, 2006The availability of lasers with highest beam quality at laser powers of 1 kW or more (such as single-mode fibre laser, which nowadays come close to the theoretical limits) provides a unique tool to investigate a wide range of welding process phenomena with penetrations of some 10 µm to penetrations of some mm.
Claus Thomy +3 more
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