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Arc welding

About: Arc welding is a research topic. Over the lifetime, 25393 publications have been published within this topic receiving 168182 citations.


Papers
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Patent
08 Oct 2001
TL;DR: In this paper, a 6-axis robot, a camera and a robot controller/vision processor are applied to a wire-fed plasma welding process to identify the part, construct a weld path based on the part's individual contour, and calculate a trajectory (with or without sinusoidal oscillation) for the robot arm to follow.
Abstract: A gas turbine component can be refurbished and/or repaired with an arc welding process that is used in conjunction with a 6-axis robot, a camera and a robot controller/vision processor. Applied to a wire fed plasma welding process, the vision system identifies the part, constructs a weld path based on the part's individual contour, and calculates a trajectory (with or without sinusoidal oscillation) for the robot arm to follow.

43 citations

Journal ArticleDOI
TL;DR: In this paper, the laser metal inert gas (MIG) hybrid welded AZ31 magnesium alloy is discussed in weld shape, microstructure characteristics and mechanical properties in comparison of single laser and arc welding.
Abstract: The laser metal inert gas (MIG) hybrid welded AZ31 magnesium alloy is discussed in weld shape, microstructure characteristics and mechanical properties in comparison of single laser and arc welding. The stable MIG arc, reliable droplet transfer and regular weld that are hardly obtained in single MIG welding can be obtained in hybrid welding by laser arc synergic effects. The ultimate tensile strength and elongation of hybrid weld are far higher than those of laser weld and reach 97·8 and 87·5% of base metal respectively. Under this experimental condition, the efficiency of hybrid welding is 1·20 times faster than that of single laser welding. Between the wide upper part (arc zone) and the narrow lower part (laser zone), obvious difference is observed. Arc zone has coarser grain size and wider partial melted zone than laser zone. Finally, the porosity reduction mechanism of hybrid weld is discussed according to the weld pool shape and the acting forces on it.

43 citations

Journal ArticleDOI
TL;DR: In this paper, a 3D print device equipped with a cold metal transfer welding source was used to simulate the formation of 3D microstructures of aluminium deposits. And the effects of the travel speed and layer superposition on the transfer mechanisms as well as on the geometrical characteristics of the deposits were discussed for both sets of parameters.
Abstract: 4043 aluminium deposits were elaborated using a 3D print device equipped with a Cold Metal Transfer welding source. Two sets of process parameters leading to different average powers were compared in order to establish the relations between the powers and energies produced and the geometrical characteristics of the deposits. The effects of the travel speed and layer superposition on the transfer mechanisms as well as on the geometrical characteristics of the deposits were discussed for both sets of parameters. Finally, the formed microstructures were analysed and the porosity defects were quantified and discussed with regard to the heat input characteristics and the solidification conditions.

43 citations

Patent
31 May 1940
TL;DR: In this article, the authors describe a simple construction and inexpensive to manufacture indicator for electric arc welding circuits with reference to arc voltage or arc length indicators, which they call arc voltage indicators.
Abstract: My invention relates, generally, to electric arc welding, and it has reference in particular to arc voltage or arc length indicators for arc welding circuits. Generally stated, it is an object of my invention to provide indicating means, which is of simple construction and inexpensive to manufacture,...

43 citations

Journal ArticleDOI
TL;DR: In this paper, a computational methodology is carried out to predict the transient development of the weld pool and the temperature histories in the workpiece during plasma arc welding (PAW) of type AISI-304.

43 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202396
2022186
2021303
2020685
2019807
2018922