Results 221 to 230 of about 38,658 (264)
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1993
AbstractLaser-beam welding (LBW) uses a moving high-density coherent optical energy source, called laser, as the source of heat. This article discusses the advantages and limitations of LBW and tabulates energy consumption and efficiency of LBW relative to other selected welding processes.
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AbstractLaser-beam welding (LBW) uses a moving high-density coherent optical energy source, called laser, as the source of heat. This article discusses the advantages and limitations of LBW and tabulates energy consumption and efficiency of LBW relative to other selected welding processes.
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Spatter formation in laser beam welding using laser beam oscillation
Welding in the World, 2014This paper presents an approach towards a better understanding of spatter formation in laser beam welding. Hereunto, experimental investigations and numerical simulation are carried out. For the study, various steels and aluminium alloys were selected to investigate the influences of alloying elements upon spatter formation.
Florian Hugger +4 more
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Absorption of the laser beam by the plasma in deep laser beam welding of metals
Journal of Applied Physics, 1995We present a simple model for the keyhole plasma in deep penetration welding with a laser beam. Simplifying the complete set of transport equations investigated by C. Tix and G. Simon [Phys. Rev. E 50, 453 (1994)] for high laser powers yields an energy balance for the plasma, which can be treated analytically.
C. Tix, U. Gratzke, G. Simon
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Electron beam welding, laser beam welding and gas tungsten arc welding of titanium sheet
Materials Science and Engineering: A, 2000Microstructures, properties and technical parameters of welding specimen of 0.5 mm thick sheets of commercial purity titanium (C.P. Ti) have been studied via high vacuum electron beam welding (EBW-HV), CO2 laser beam welding (LBW) and gas tungsten arc welding (TIG), as well as optical microscope (OM) observation and microhardness measuring. The results
Qi Yunlian +3 more
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Laser beam welding with filler metal
Steel Research, 1999Laser beam welding generally does without the use of filler metal, in contrast to conventional welding processes. The use of filler metal in laser beam welding or in the combined GMA (gas-metal-arc)-laser beam - hybrid welding process widens the field of application for laser beam welding.
Ulrich Dilthey +2 more
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Haz hardness in laser beam welds
ICALEO '99: Proceedings of the Laser Materials Processing Conference, 1999The thermal profiles that result from a numerical model of laser beam welding are used to calculate the hardness in the heat-affected zone of two 10-mm-thick BS4360 50D steel welds. The numerical model assumes a cylindrical keyhole with the same radius as that of the incident laser beam.
E. A. Metzbower +2 more
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Hybrid welding with arc and laser beam
Science and Technology of Welding and Joining, 1999This paper deals with a combination of two different welding processes, i.e. the synergic action of two different heat sources for fusion welding. The major part of the paper is focused on the combined action of a welding arc and a laser beam. The main advantage of the use of both heat sources is more efficient use of the energy supplied. With certain
J. Tusek, M. Suban
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Electron beam welding vs. laser beam welding for air bearing shaft
ICALEO 2005: 24th International Congress on Laser Materials Processing and Laser Microfabrication, 2005Air bearings allow designers to push the envelope on precision and high-speed applications. Unlike contact roller bearings, air bearings utilise thin film pressurised air to provide “zero friction” load bearing interface between surfaces that would otherwise be in contact with each other.
M. Naeem +3 more
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S-Polarization Laser Beam Welding
1992The availability of high power lasers with average power levels above 5 kW and high beam quality triggered a number of industrial applications of lasers. Especially the process of deep penetration welding made the use of lasers attractive in applications where low distortion and small heat affected zones are required.
K. Behler, E. Beyer, N. Wolf, O. Welsing
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Plasma Spectroscopy in Laser Beam Welding
1992The dependence of plasma emission spectra of the developing iron plasma on different process parameters, that is the laser power, the shielding gas flow and the feed forward, was studied during laser welding of steel using a CO2-laser and argon as process gas. The results were compared to the results of other authors (Sok 88, Roc 87).
F. Garnich, H. Lindl
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