Results 161 to 170 of about 2,104 (200)

Fiber Laser Welding of Noncombustible Magnesium Alloy

Materials Science Forum, 2008
Noncombustible magnesium alloy AMC602 (Mg-6mass%Al-2mass%Ca) extruded sheet of 2.0mm thickness was successfully welded using a fiber laser welding process at welding speed of 10m/min at 3kW laser power. Tensile strength of the welded joint was about 82 to 88% of that of the base metal.
Yuji Sakai, Kazuhiro Nakata, Takuya Tsumura, Mitsuji Ueda, Tomoyuki Ueyama, Katsuya Akamatsu   +5 more
openaire   +1 more source

Laser transmission welding of long glass fiber reinforced thermoplastics

SPIE Proceedings, 2015
Joining fiber reinforced polymers is an important topic for lightweight construction. Since classical laser transmission welding techniques for polymers have been studied and established in industry for many years joint-strengths within the range of the base material can be achieved.
Straeten, K. van der, Engelmann, C., Olowinsky, A., Gillner, A.   +3 more
openaire   +1 more source

Fiber laser welding and suppression of spatters

ICALEO 2018: 37th International Congress on Applications of Lasers & Electro-Optics, 2018
Welding 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, Takashi Kayahara, Toshiaki Sakai, Takashi Shigematsu   +3 more
openaire   +1 more source

Weld depth control in fiber laser welding of thin metal sheets

ICALEO 2008: 27th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing, 2008
Laser 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, Alexander Olowinsky, Ulrich Jansen, Wolfgang Schulz, Arnold Gillner   +4 more
openaire   +1 more source

Phenomena of welding with high-power fiber laser

ICALEO 2006: 25th International Congress on Laser Materials Processing and Laser Microfabrication, 2006
This 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, Masami Mizutani, Yousuke Kawahito, Seiji Katayama   +3 more
openaire   +1 more source

Micro welding with pulsed single mode fiber lasers

ICALEO 2004: 23rd International Congress on Laser Materials Processing and Laser Microfabrication, 2004
Many 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, William J. Fox, Ken G. Watkins   +2 more
openaire   +1 more source

Fiber laser welding of 780MPa high strength steel

ICALEO 2006: 25th International Congress on Laser Materials Processing and Laser Microfabrication, 2006
A 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, Muneharu Kutsuna, Guojian Xu   +2 more
openaire   +1 more source

Humping in welding with single-mode fiber lasers

ICALEO 2006: 25th International Congress on Laser Materials Processing and Laser Microfabrication, 2006
The 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, Thomas Seefeld, Florian Wagner, Frank Vollertsen   +3 more
openaire   +1 more source

Microstructure and Mechanical Properties of Fiber-Laser-Welded and Diode-Laser-Welded AZ31 Magnesium Alloy

Metallurgical and Materials Transactions A, 2010
The microstructures, tensile properties, strain hardening, and fatigue strength of fiber-laser-welded (FLW) and diode-laser-welded (DLW) AZ31B-H24 magnesium alloys were studied. Columnar dendrites near the fusion zone (FZ) boundary and equiaxed dendrites at the center of FZ, with divorced eutectic β-Mg17Al12 particles, were observed. The FLW joints had
S. M. Chowdhury, D. L. Chen, S. D. Bhole, E. Powidajko, D. C. Weckman, Y. Zhou   +5 more
openaire   +1 more source

Modulated fiber laser welding of high reflective AZ31

The International Journal of Advanced Manufacturing Technology, 2014
Power sine modulation fiber laser welding (FLW) of AZ31 magnesium alloy was conducted. When the diameter of transmission fiber and focal spot was 400 μm and 0.4 mm, respectively, the average laser powers for penetrating a 2.7-mm-thick AZ31 plate at a welding speed of 5 m/min were reduced by about 33 % by using modulated FLW.
Lin-Jie Zhang, Xing-Jun Zhang, Jie Ning, Jian-Xun Zhang   +3 more
openaire   +1 more source