Results 161 to 170 of about 15,713 (212)
Multipass laser hot-wire welding: Morphology and process robustness
Journal of Laser Applications, 2017 There are great prospects for utilizing multipass laser hot-wire welding to join thick steel sheets, especially for techniques commonly performed in single passes, e.g., laser arc hybrid welding, fall short, presenting great opportunities for vehicle industries and offshore applications.
Jonas Näsström +2 more
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Laser hot-wire welding for minimizing defects
ICALEO 2004: 23rd International Congress on Laser Materials Processing and Laser Microfabrication, 2004 The objective of laser hot-wire welding is to provide a low heat input procedure which could minimize defects in crack sensitive supper alloys and increase over all deposition rates in cladding operations. Another potential benefit of laser hot-wire welding is that thermal distortion effect are greatly reduced.
M.R. Jones +3 more
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Research on nonlinear prediction model of weld forming quality during hot-wire laser welding
Optics & Laser Technology, 2020 Abstract In order to realize accurate prediction of the weld forming quality during hot-wire laser welding, in this study, a basic multivariate linear regression model regarding multiple process parameters and the weld forming quality is first established. And a residual analysis is then used to analyze the linear regression model. The results of the
Shichun Li +4 more
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Control of wire transfer behaviors in hot wire laser welding
The International Journal of Advanced Manufacturing Technology, 2015 Hot wire laser welding reduces the requirement of wire feeding accuracy and improves wire deposition efficiency with preheating wire by resistance heat. Due to merits like low heat input and high deposition rate, this method has broad potential applications like welding and additive manufacturing. It is a key problem to maintain stable wire transfer in
Peng Wen +3 more
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Narrow gap laser welding by multilayer hot wire addition
Journal of Laser Applications, 2016 Welding of thick section butt joints experiences limitations for different techniques. One option is to fill a narrow gap layer by layer with laser melted wire, a laser metal deposition technique where the complexity of a keyhole is avoided. The presented results show that wire addition can enable relatively thick layers.
Alexander Kaplan +5 more
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Microstructures in hot wire laser beam welding of HY 80 steel
Materials Science and Technology, 1994 AbstractLaser beam welding of 13 mm plates of HY 80 steel resulted in different microstructures in the fusion zone depending on the welding process. Autogenous welds resulted in an untempered martensitic structure, whereas, with the introduction of a hot wire filler metal, the microstructures depended on the wire feed.
E. A. Metzbower +2 more
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Journal of Laser Applications, 2020 Oscillating laser hot-wire tungsten inert gas (TIG) hybrid welding of 10 mm thick 316LN austenitic stainless steel in the vertical position was performed. The characteristics of droplet transfer, molten pool formation, and forming mechanism of different oscillating parameters were investigated by the experimental method.
Chengyuan Ma +4 more
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The Laser Welding with Hot Wire of 316LN Thick Plate Applied on ITER Correction Coil Case
Journal of Fusion Energy, 2014 ITER correction coil (CC) cases have characteristics of small cross section, large dimensions, and complex structure. The cases are made of heavy thick (20 mm), high strength and high toughness austenitic stainless steel 316LN. The multi-pass laser welding with hot wire technology is used for the case closure welding, due to its low heat input and ...
Chao Fang +9 more
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ICALEO 2009: 28th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing, 2009 High power and high brightness fiber lasers have been developed, and it is revealed that a deeper weld bead can be produced with an increase in the power density. Thus a 10 kW fiber laser with hot wire was used for butt welding of 590 MPa high-strength steel plates of 12 mm thickness with 0.4 mm gap. At the laser power of 10 kW and welding speed of 1 m/
Terumasa Onishi +3 more
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Welding in the World, 2014 Hot-wire laser welding with a narrow gap groove was applied to ASTM A213 grade T91 steel in the application of ultra super critical boilers. A filler wire according to AWS A 5.28: ER90S-G was used. The effect of the depth-to-width ratio (D/W) of a weld shape on the susceptibility to solidification cracking was investigated. With a groove width of 3 mm,
Rittichai Phaoniam +5 more
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