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Effect of hydrogen in an argon GTAW shielding gas: Arc characteristics and bead morphology
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In this article, the influence of hydrogen additions to an argon shielding gas on the heat input and weld bead morphology was investigated using the gas tungsten arc welding process, and it was found that weld bead size and shape with hydrogen additions were related to changes in the ability of the arc to generate heat and not to generate perturbations in the weld pool caused by Marangoni fluid flow.Abstract:
The influence of hydrogen additions to an argon shielding gas on the heat input and weld bead morphology was investigated using the gas tungsten arc welding process. Variations in weld bead size and shape with hydrogen additions were related to changes in the ability of the arc to generate heat and not to generate perturbations in the weld pool caused by Marangoni fluid flowread more
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Journal ArticleDOI
Experimental investigation of the effect of hydrogen in argon as a shielding gas on TIG welding of austenitic stainless steel
TL;DR: In this article, the effect of hydrogen in argon as shielding gas was investigated for tungsten inert gas welding of 316L austenitic stainless steel, and the microstructure, penetration and mechanical properties were examined.
Journal ArticleDOI
A computational investigation of the effectiveness of different shielding gas mixtures for arc welding
TL;DR: In this article, the influence of adding helium, hydrogen and nitrogen to the argon shielding gas is investigated and it is found that adding any of the gases increases the heat flow to and the current density at the anode.
Journal ArticleDOI
Experimental research of the effect of hydrogen in argon as a shielding gas in arc welding of high-alloy stainless steel
J. Tus̆ek,M. Suban +1 more
TL;DR: In this paper, the effect of hydrogen in argon as a shielding gas in arc welding of austenitic stainless steel was investigated and it was shown that hydrogen addition to argon changes the static characteristic of the welding arc.
Journal ArticleDOI
Emission spectrometry evaluation in arc welding monitoring system
TL;DR: In this paper, the authors describe exploratory experimental procedures implemented for the development of a nonintrusive and real-time sensor for weld defect tracking which uses emission spectrometry for measuring the electromagnetic content of the plasma-weld pool interface in the GMA welding arc.
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An investigation on the effects of gases in GTA welding of a wrought AZ80 magnesium alloy
TL;DR: In this article, the welding parameters and hydrogen concentration in the arc atmosphere were important in controlling porosity, and the two-dimensional heat-flow conditions of fully penetrating welds were capable of eliminating porosity and could make welding with hydrogen additions a possibility to consider.
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Experimental research of the effect of hydrogen in argon as a shielding gas in arc welding of high-alloy stainless steel
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