Results 101 to 110 of about 904 (147)

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.
Marshall Jones, Carl Erikson, Daniel Nowak, Ganjiang Feng   +3 more
openaire   +1 more source

Experimental and numerical investigation of laser hot wire welding

The International Journal of Advanced Manufacturing Technology, 2015
With respect to autogenous laser welding, laser welding assisted by a hot wire was capable of saving the consumption of laser power, tailoring the mechanical and physical properties of welds, and improving the gap-bridging capability. In this work, the influences of welding parameters were investigated to combine the positive aspects of laser beam and ...
Wei Liu, Junjie Ma, Shuang Liu, Radovan Kovacevic   +3 more
openaire   +1 more source

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 F. H. Kaplan, Kyoung Hak Kim, Hee-Seon Bang, Han-Sur Bang, Jonas Näsström, Jan Frostevarg   +5 more
openaire   +1 more source

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, Bin Mo, Wei Xu, Gang Xiao, Zhaohui Deng   +4 more
openaire   +1 more source

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, Jan Frostevarg, Alexander F. H. Kaplan   +2 more
openaire   +1 more source

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
Wen Peng, Shan Jiguo, Zheng Shiqing, Wang Gang   +3 more
openaire   +1 more source

Real-time monitoring of the laser hot-wire welding process

Optics & Laser Technology, 2014
Abstract The laser hot-wire welding process was investigated in this work. The dynamics of the molten pool during welding was visualized by using a high-speed charge-coupled device (CCD) camera assisted by a green laser as an illumination source. It was found that the molten pool is formed by the irradiation of the laser beam on the filler wire.
Wei Liu, Shuang Liu, Junjie Ma, Radovan Kovacevic   +3 more
openaire   +1 more source

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, H. K. D. H. Bhadeshia, R. H. Phillips   +2 more
openaire   +1 more source

Characteristics of droplet transfer, molten pool formation, and weld bead formation of oscillating laser hot-wire tungsten inert gas hybrid welding

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, Bo Chen, Caiwang Tan, Xiaoguo Song, Jicai Feng   +4 more
openaire   +1 more source

Energy efficiency evaluation of hot-wire laser welding based on process characteristic and power consumption

Journal of Cleaner Production, 2015
Abstract Energy conservation has become one of the priorities in manufacturing industries, while the energy efficiency at process level may provide deep understanding of the energy consumption during the manufacturing process. Hot-wire laser welding of double galvanized high-strength steel DP800 has a wide range of potential applications in the ...
Haiying Wei, Yi Zhang, Lipeng Tan, Zhihua Zhong   +3 more
openaire   +1 more source