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Shielded metal arc welding

About: Shielded metal arc welding is a research topic. Over the lifetime, 4462 publications have been published within this topic receiving 40560 citations. The topic is also known as: manual metal arc welding & flux shielded arc welding.


Papers
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Patent
28 Oct 1999
TL;DR: A universal shielding gas mixture containing, by volume, about 96.5% argon, 3.0% carbon dioxide, and 2.0 % oxygen was presented in this article.
Abstract: A universal shielding gas mixture contains, by volume, about 96.0% argon, 3.0% carbon dioxide, and 1.0% oxygen. This single shielding gas composition can be used for welding ferrous metals, including both carbon steel and stainless steel using a variety of gas metal arc welding (GMAW) processes including short circuit arc, pulse arc, spray arc, metal transfer modes and flux core metal arc welding (FCAW) when welding carbon steel, stainless steel, hardfacing and metal core wires. This universal shielding gas composition will not substantially alter the carbon content of the weld metal chemistry. In a second embodiment, suitable for use with carbon steel materials but not stainless steel, the shielding gas mixture contains, by volume, about 95.0% argon, 3.0% carbon dioxide, and 2.0% oxygen. Another aspect of the invention is a single tank containing the premixed universal shielding gas, and improved gas metal arc welding processes that utilize the disclosed shielding gas mixture.

22 citations

Journal ArticleDOI
TL;DR: In this paper, the effect of arc current on the weld interface is also detailed and is found to be defect free at higher values of arc currents, while the results reveal that MIAB welded samples exhibits good structural property correlation for high pressure applications with an added benefit of enhanced productivity at lower cost.

22 citations

01 Jan 1983
TL;DR: The development of nickel-containing electrodes for manual metal arc welding to meet high-toughness requirements in offshore structures is described in this article, where results of related COD and Charpy tests are included, and comparisons are made between Mn-Ni systems and previously-investigated C-Mn systems.
Abstract: The development of nickel-containing electrodes for manual metal arc welding to meet high-toughness requirements in offshore structures is described. Results of related COD and Charpy tests are included, and comparisons are made between Mn-Ni systems and previously-investigated C-Mn systems.

22 citations

Journal ArticleDOI
TL;DR: In this paper, a mathematical model for sound weld deposit area of a mild steel specimen was developed to optimize various Gas Metal Arc welding parameters including welding voltage, welding current, welding speed and nozzle to plate distance (NPD).
Abstract: Gas Metal Arc Welding is a process in which the source of heat is an arc format between consumable metal electrode and the work piece with an externally supplied gaseous shield of gas either inert such as argon, helium. This experimental study aims at optimizing various Gas Metal Arc welding parameters including welding voltage, welding current, welding speed and nozzle to plate distance (NPD) by developing a mathematical model for sound weld deposit area of a mild steel specimen. Factorial design approach has been applied for finding the relationship between the various process parameters and weld deposit area. The study revealed that the welding voltage and NPD varies directly with weld deposit area and inverse relationship is found between welding current and speed with weld deposit area.

22 citations

Journal ArticleDOI
TL;DR: In this article, a gas metal arc welding (GMAW) butt-joining process was modeled using a two-way fully coupled, transient, thermal-mechanical finite-element procedure.
Abstract: A conventional gas metal arc welding (GMAW) butt-joining process has been modeled using a two-way fully coupled, transient, thermal-mechanical finite-element procedure. To achieve two-way thermal-mechanical coupling, the work of plastic deformation resulting from potentially high thermal stresses is allowed to be dissipated in the form of heat, and the mechanical material model of the workpiece and the weld is made temperature dependent. Heat losses from the deposited filler-metal are accounted for by considering conduction to the adjoining workpieces as well as natural convection and radiation to the surroundings. The newly constructed GMAW process model is then applied, in conjunction with the basic material physical-metallurgy, to a prototypical high-hardness armor martensitic steel (MIL A46100). The main outcome of this procedure is the prediction of the spatial distribution of various crystalline phases within the weld and the heat-affected zone regions, as a function of the GMAW process parameters. The newly developed GMAW process model is validated by comparing its predictions with available open-literature experimental and computational data.

22 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202368
2022108
202192
2020109
201979
2018111