scispace - formally typeset
Search or ask a question
Topic

Arc welding

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


Papers
More filters
Patent
22 Aug 2001
TL;DR: An electric arc welder powered by a plurality of liquid organic fuel cells is described in this article, where the fuel cells are stacked together to produce the desired arc voltage and current between an electrode and the workpiece.
Abstract: An electric arc welder powered by a plurality of liquid organic fuel cells The fuel cells use a methanol/water mixture as the organic feed The fuel cells produce carbon dioxide as a reactive product which is used an a shielding gas during the arc welding process The fuel cells are stacked together to produce the desired arc voltage and current between an electrode and the workpiece The arc welder includes a welding current to control the current wave shape through the electrode and to control or increase the voltage through the electrode

91 citations

Patent
06 Aug 1973
TL;DR: An arc welding simulator is provided for teaching welder trainees how to arc weld quality welds resulting in significant savings of time and material as mentioned in this paper, and the simulator provides immediate, discriminative feedback and the capacity for concentrated practice.
Abstract: An arc welding simulator is provided for teaching welder trainees how to arc weld quality welds resulting in significant savings of time and material. Specifically, the simulator provides immediate, discriminative feedback and the capacity for concentrated practice, both learning qualities lacking in the welding process.

91 citations

Journal Article
TL;DR: In this article, an experimental investigation on the mechanical properties of laser welded joints using flat micro-tensile specimens (0.5 mm thick, 2 mm wide) was carried out to establish a testing procedure to determine the tensile properties of the weld metal and heat-affected zone (HAZ) of the laser beam welds.
Abstract: Laser beam (LB) welding is increasingly being used in welding of structural steels. The thermal cycles associated with laser beam welding are generally much faster than those involved in conventional arc welding processes, leading to a rather small weld zone that usually exhibits a high hardness for C-Mn structural steels due to the formation of martensite. It is rather difficult to determine the tensile properties of a laser weld joint area due to the small size of the fusion zone. Complete information on the tensile and fracture toughness properties of the fusion zone is essential for prequalification and a complete understanding of the joint performance in service, as well as for conducting the defect assessment procedure for such weld joints. Therefore, an experimental investigation on the mechanical properties of laser welded joints using flat microtensile specimens (0.5 mm thick, 2 mm wide was carried out to establish a testing procedure to determine the tensile properties of the weld metal and heat-affected zone (HAZ) of the laser beam welds. In the present work, two similar joints, namely, ferritic-ferritic and austenitic-austenitic and one dissimilar ferritic-austenitic joint were produced with a CO 2 laser using 6-mm-thick steel plates. In addition to the testing of flat microtensile specimens, the mechanical properties were examined by microhardness survey and conventional transverse and round tensile specimens. The results of the microtensile specimens were compared with standard round tensile specimens, and this clearly showed the suitability of the microtensile specimen technique for such joints. The crack tip opening displacement (CTOD) tests were also performed to determine the fracture toughness of the LB welds using three-point bend specimens. The effect of strength heterogeneity (mismatchingj across the weld joint and at the vicinity of the crack tip on the CTOD fracture toughness values was also discussed.

91 citations

Journal ArticleDOI
TL;DR: In this paper, the authors describe procedures for the joining of aluminum with copper via solid-state welding, where diffusion welding is performed as a model welding procedure, while friction stir welding and hybrid friction diffusion bonding are investigated as technological welding processes.
Abstract: This paper describes procedures for the joining of aluminum with copper via solid-state welding. Welding of dissimilar materials in order to reach a high strength and durable joints is a reasonable and outstanding challenge for industrial and especially for automotive applications. Nowadays, wiring and electrical systems, as for example batteries, turn out to be main drivers for new developments in the field of dissimilar joining technologies. Joining of aluminum to copper through a melting process leads to brittle intermetallic compounds, which cause failure of the joint already during cool down. Solid-state welding technologies allow the welding below melting temperature, so that phenomena at the interface, which lead to the formation of intermetallics under different conditions, are of interest to the resulting joint properties. Not only mechanical properties, but electrical resistivity and heat conduction are strongly dependent on those effects. Diffusion welding is performed as a model welding procedure, while friction stir welding and hybrid friction diffusion bonding are investigated as technological welding processes in this paper.

91 citations

Patent
05 Dec 1990
TL;DR: In this paper, a flux-cored wire for gas shielded arc welding is described, which consists of a steel sheath and a flux composition filled in the sheath at a flux rate of 8 to 25 wt.
Abstract: A flux-cored wire for gas shielded arc welding is described. The wire comprises a steel sheath and a flux composition filled in the steel sheath at a flux rate of 8 to 25 wt%. The flux composition comprises, based on the weight of the total flux, 10 to 30% of TiO₂, 0.1 to 0.6% of Na₂O provided that a ratio of TiO₂ and Na₂O is in the range of 20 to 100: 1, 0.01 to 2.0% of a metal fluoride calculated as F, and 0.005 to 0.4% of moisture. The composition may further comprise Bi₂O₃.

91 citations


Network Information
Related Topics (5)
Welding
206.5K papers, 1.1M citations
92% related
Alloy
171.8K papers, 1.7M citations
78% related
Microstructure
148.6K papers, 2.2M citations
76% related
Machining
121.3K papers, 1M citations
76% related
Deformation (engineering)
41.5K papers, 899.7K citations
75% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202396
2022186
2021303
2020685
2019807
2018922