Results 191 to 200 of about 38,083 (255)
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Arc Behavior of Dry Hyperbaric Gas Metal Arc Welding
Advanced Materials Research, 2014The arc behavior in dry hyperbaric Gas Metal Arc Welding (GMAW) process was investigated by using a high speed camera system and welding electric signal acquisition system. The arc shape in hyperbaric argon environment of 0.1-2MPa shows quite different characteristic from that at normal pressure.
Kai Li, Hong Ming Gao, Hai Chao Li
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1993
Abstract Gas-metal arc welding (GMAW) is an arc welding process that joins metals together by heating them with an electric arc that is established between a consumable electrode (wire) and a workpiece. This article discusses the advantages and limitations, operating principle, metal transfer mechanisms, and process variables of the GMAW
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Abstract Gas-metal arc welding (GMAW) is an arc welding process that joins metals together by heating them with an electric arc that is established between a consumable electrode (wire) and a workpiece. This article discusses the advantages and limitations, operating principle, metal transfer mechanisms, and process variables of the GMAW
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Welding seam tracking in robotic gas metal arc welding
Journal of Materials Processing Technology, 2017Abstract In order to improve the welding quality of robotic gas metal arc welding (GMAW), a welding system for seam tracking is developed based on a purpose-built vision sensor. By analyzing the features of robotic GMAW, a novel software program is developed for welding seam tracking.
Xu, Yanling +6 more
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Materials Research Express, 2018
The variation of heat input on microstructure and mechanical properties in gas metal arc welding of ferritic stainless steel (grade 409 L) using two different austenitic filler wires ER304 L and ER308 L have been discussed in this work.
S. Gupta +3 more
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The variation of heat input on microstructure and mechanical properties in gas metal arc welding of ferritic stainless steel (grade 409 L) using two different austenitic filler wires ER304 L and ER308 L have been discussed in this work.
S. Gupta +3 more
semanticscholar +1 more source
Metal gas reactions in gas-shielded arc welding
Welding International, 1988Abstract Mixed gas-shielded arc welding is becoming more and more popular. The influences of the gas components on arc and material transfer are known to a considerable extent. There is as yet no general quantitative description of the chemical behaviour of the gases dependent on the composition of the gas shield in arc welding.
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Study of the arc voltage in gas metal arc welding
Journal of Physics D: Applied Physics, 2018In this paper, the voltage drop in pulsed gas metal arc welding (GMAW) is studied, focussing on the contributions of the different sections of wire and arc along the current path and their dependence on arc length and current.
G. Zhang +8 more
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Advancements in pulse gas metal arc welding
Journal of Materials Processing Technology, 2005Environmental concerns have driven manufactures to look for alternative materials like aluminium that are lighter in weight and possess good thermal and electrical conductivity. However, fabrication of alternative materials presents a considerable challenge for fabrication in volume production.
Posinasetti, Praveen +2 more
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Gas metal arc-narrow gap welding
1984Narrow gap welding techniques have been developed to diminish welding work and to meet the requirements of high fracture toughness in heavy plate structures. Welding in narrow grooves has been found sensitive to weld defects. It requires strict procedural tolerances which calls for new thinking in the workshop.
Koivula, Jouko, Gröger, Peter
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Metal transfer instability in gas metal arc welding
Science and Technology of Welding and Joining, 2009This work presents a simplified model of metal transfer in gas metal arc welding. The model incorporates key features of metal transfer including the change in droplet diameters as welding moves from the globular into the spray metal transfer region, and the increase in welding voltage that is observed to occur as the pendant droplet grows.
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Fume emissions during gas metal arc welding
Toxicological & Environmental Chemistry, 2006The control of exposure to welding fumes is of increasing importance in promoting a healthy, safe and productive work environment. This article describes the effects of shielding gas composition on the amount and composition of welding fumes produced during gas metal arc welding (GMAW).
I. Pires +3 more
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