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Arc Interruptions in Tandem Pulsed Gas Metal Arc Welding
Journal of Manufacturing Science and Engineering, 2015In 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 +2 more
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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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Stability of droplets in gas metal arc welding
Science and Technology of Welding and Joining, 2000A 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, 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.
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, 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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Prediction of weld porosity (pit) in gas metal arc welds
The International Journal of Advanced Manufacturing Technology, 2019Recently, in the automobile industry, the use of zinc-plated high-strength steels has been increasing to lighten vehicles and improve safety. In this scenario, gas metal arc welding (GMAW) processes are applied to automobile bodies and chassis parts. However, porosity defects occur in the welds because of the zinc vapor formed in the zinc coating layer
Seungmin Shin, Min Seok Kim, Sehun Rhee
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On-line control of robotized Gas Metal Arc Welding
CIRP Annals, 2001Abstract On-line control of welding and soldering is a strategic issue for the complete automation of robotized plants. The proposed control system aims to detect the most critical defects in industrial applications. It is based on the analysis of images coming from two cameras installed on the welding torch: the arc and the pool observation allow ...
LANZETTA, MICHELE +2 more
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Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 2001
The high-speed rotating arc process forms a flat bead surface and decreased penetration depth. It can be effectively applied to automatic seam tracking, because the sensitivity of this type of arc sensor is greater than that of the conventional torch weaving method.
G-H Kim, S-J Na
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The high-speed rotating arc process forms a flat bead surface and decreased penetration depth. It can be effectively applied to automatic seam tracking, because the sensitivity of this type of arc sensor is greater than that of the conventional torch weaving method.
G-H Kim, S-J Na
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Tandem Gas Metal Arc Welding for Low Distortion Butt Welds
Advanced Materials Research, 2011The feasibility of using Tandem Gas Metal Arc Welding (T-GMAW) to produce full penetration butt welds in 5mm ship panel steel plates has been assessed and compared to the current Submerged Arc Welding (SAW) process. Experiments conducted show that the T-GMAW process is feasible and demonstrated a significant improvement over the SAW process in several ...
Larkin, Nathan P +5 more
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Simulation of rotational arc sensing in gas metal arc welding
Science and Technology of Welding and Joining, 1999A mathematical model for the behaviour and interaction of power source, electrode extension, welding arc, and welding joint geometry is applied to simulation of seam tracking signals from high speed rotating electrodes in gas metal arc welding of carbon steel.
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