Topic
Arc welding
About: Arc welding is a research topic. Over the lifetime, 25393 publications have been published within this topic receiving 168182 citations.
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08 Jun 1934
TL;DR: In this paper, a simple and efficient arrangement to indicate to an arc welding operator the relative arc length or voltage of a direct current welding arc, and an improved means of amplifying unidirectional voltages.
Abstract: This invention provides a simple and efficient arrangement to indicate to an arc welding operator the relative arc length or voltage of a direct current welding arc, and provides an improved means of amplifying unidirectional voltages. Referring to the attached drawings: Figure 1 is a diagrammatic...
44 citations
TL;DR: In this article, a six bead multi-pass gas metal arc weld of 20mm thick structural steel S355J2+N was welded under shrinkage restraint, and the residual stresses were experimentally and numerically investigated.
44 citations
TL;DR: In this article, a transient three-dimensional model of an anti-phase-synchronized pulsed tandem gas-metal arc welding process is presented, which is used to analyse arc interactions and their influence on the gas shield flow.
Abstract: The paper presents a transient three-dimensional model of an anti-phase-synchronized pulsed tandem gas–metal arc welding process, which is used to analyse arc interactions and their influence on the gas shield flow. The shielding gases considered are pure argon and a mixture of argon with 18% CO2. Comparison of the temperature fields predicted by the model with high-speed images indicates that the essential features of the interactions between the arcs are captured. The paper demonstrates strong arc deflection and kinking, especially during the low-current phase of the pulse, in agreement with experimental observations. These effects are more distinct for the argon mixture with 18% CO2. The second part of the paper demonstrates the effects of arc deflection and instabilities on the shielding gas flow and the occurrence of air contamination in the process region. The results allow an improved understanding of the causes of periodic instabilities and weld seam imperfections such as porosity, spatter, heat-tint oxidation and fume deposits.
44 citations
TL;DR: In this article, the effect of cladding parameters such as welding current, welding speed, and nozzle-to-plate distance on the weld bead geometry was evaluated, and mathematical equations were developed by using the data obtained by conducting three-factor five-level factorial experiments.
44 citations
44 citations