Results 211 to 220 of about 169,147 (262)

Circuit simulation for gas metal arc welding

Science and Technology of Welding and Joining, 1999
An electrical circuit was developed to model the behaviour of gas metal arc welding. The model incorporates results from a one-dimensional free burning arc model to describe the arc and a second order differential equation to describe one-dimensional energy conservation in the welding anode.
S.W. Simpson, M. Rados, P. Xu
openaire   +2 more sources

A theoretical model for gas metal arc welding and gas tungsten arc welding. I.

Journal of Applied Physics, 1998
A recently developed theory for predicting arc and electrode properties in gas metal arc welding (GMAW) has been generalized to include arc–electrode interfaces, variation of surface tension pressure with temperature, Marangoni forces and handling of weld pool development in stationary gas tungsten arc welding (GTAW).
openaire   +2 more sources

Effects of shielding gas compositions on arc plasma and metal transfer in gas metal arc welding [PDF]

Journal of Applied Physics, 2010
This article presents the effects of shielding gas compositions on the transient transport phenomena, including the distributions of temperature, flow velocity, current density, and electromagnetic force in the arc and the metal, and arc pressure in gas metal arc welding of mild steel at a constant current input.
Hai-Lung Tsai, Z. H. Rao, S. M. Liao
openaire   +1 more source

Gas-Metal Arc Welding

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
openaire   +2 more sources

Metal gas reactions in gas-shielded arc welding

Welding International, 1988
Abstract 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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Metal transfer instability in gas metal arc welding

Science and Technology of Welding and Joining, 2009
This 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.
openaire   +2 more sources

Arc Interruptions in Tandem Pulsed Gas Metal Arc Welding

Journal of Manufacturing Science and Engineering, 2015
In addition to electromagnetic attraction between the arcs in Tandem Pulsed gas metal arc welding (GMAW), arc interruptions, mostly in the trailing arc at low mean current levels, may also occur, which is a phenomenon not widely discussed in the welding field.
Ruham Pablo Reis, Demostenes Ferreira Filho, Daniel Souza   +2 more
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Stability of droplets in gas metal arc welding

Science and Technology of Welding and Joining, 2000
A method is developed to compute the stability of droplets detaching from the consumable electrode in gas metal arc welding. An aluminium electrode is used as the model system. Theoretical predictions and supporting experiments are used to ascertain the rate of transfer of droplets for a range of current encompassing globular and spray transfer, and ...
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Arc Behavior of Dry Hyperbaric Gas Metal Arc Welding

Advanced Materials Research, 2014
The 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.
Hong Ming Gao, Kai Li, Hai Chao Li
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Welding seam tracking in robotic gas metal arc welding

Journal of Materials Processing Technology, 2017
Abstract 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, Lv, Na, Fang, Gu (R7659), Du, Shaofeng, Zhao, Wenjun, Ye, Zhen, Chen, Shanben   +6 more
openaire   +3 more sources