Characteristics of Welding and Arc Pressure in the Plasma–TIG Coupled Arc Welding Process

In this article, a novel hybrid welding process called plasma-TIG coupled arc welding was proposed to improve the efficiency and quality of welding by utilizing the full advantage of plasma and TIG welding processes. The two arcs of plasma and TIG were pulled into each other into one coupled arc under the effect of Lorentz force and plasma flow force during welding experiments. The arc behavior of coupled arc was studied by means of it’s arc profile, arc pressure and arc force conditions. The coupled arc pressure distribution measurements were performed. The effects of welding conditions on coupled arc pressure were evaluated and the maximum coupled arc pressure was improved compared with single-plasma arc and single-TIG arc. It was found that the maximum arc pressure was mainly determined by plasma arc current and plasma gas flow. According to the results, the proposed coupled arc welding process have both advantages of plasma arc and TIG method, and it has a broad application prospect.

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Metal Transfer and Arc Plasma in Gas Metal Arc Welding

Journal of Heat Transfer ◽

10.1115/1.2724847 ◽

2006 ◽

Vol 129 (8) ◽

pp. 1025-1035 ◽

Cited By ~ 25

Author(s):

J. Hu ◽

H. L. Tsai

Keyword(s):

Arc Welding ◽

Gas Metal Arc Welding ◽

Welding Process ◽

Arc Plasma ◽

Transient Complex ◽

Metal Arc Welding ◽

Arc Pressure ◽

Complex Heat Transfer ◽

Arc Welding Process ◽

Velocity Pressure

This article analyzes the transient complex heat transfer and fluid flow in molten metal and arc plasma during the gas metal arc welding process. The model predicts the formation, growth, detachment, and transfer of droplets from the tip of a continuously fed electrode under the influences of several competing forces including gravity, electromagnetic force, arc pressure, plasma shear stress, and surface tension. Simulations were conducted for five different current levels to study the effects of current on the distributions of temperature, velocity, pressure, and current density in the droplet and/or the arc plasma. Agreement between the simulated results and published experimental data was obtained.

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Power quality analysis of gas metal arc welding process operating under different drop transfer modes

Renewable Energy and Power Quality Journal ◽

10.24084/repqj09.338 ◽

2011 ◽

pp. 362-368 ◽

Cited By ~ 1

Author(s):

E.F. da Silva ◽

J.R. Macedo ◽

A. Scotti ◽

J.C. de Oliveira

Keyword(s):

Power Quality ◽

Arc Welding ◽

Gas Metal Arc Welding ◽

Welding Process ◽

Quality Analysis ◽

Metal Arc Welding ◽

Power Quality Analysis ◽

Arc Welding Process

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The Determination of Noxes Emissions in Case of Manual Arc Welding Process with Coated Electrode

Revista de Chimie ◽

10.37358/rc.18.7.6425 ◽

2018 ◽

Vol 69 (7) ◽

pp. 1826-1829

Author(s):

Claudiu Babis ◽

Augustin Semenescu ◽

Oana Roxana Chivu ◽

Maria Alina Gligor ◽

Gabriel Iacobescu ◽

...

Keyword(s):

Production System ◽

Arc Welding ◽

Welding Process ◽

Practical Method ◽

Machine Building ◽

Short Exposure ◽

Metal Bath ◽

Coated Electrode ◽

Manual Arc Welding ◽

Arc Welding Process

The occupational risk assessment of a machine building company must cover each activity and workstation, taking into account each component of the production system (work system), each workload, work equipment and the work environment. This assessment is an extremely complicated and complex issue since the production system of such an enterprise is particularly complex and complicated. Welding assembly is a highly polluting technology process, especially of the atmosphere and soil. The formation of gases in the welding process is the result of burning of the electrodes, powders, forming the molten metal bath and making the weld seam. Welding operators are exposed to smoke and toxic gases resulting from the welding process, which can in many cases be hazardous to health. Many acute intoxications that may be caused by excessive exposure to or short exposure to smoke and gas resulting from the welding process have been studied over time. In the paper are presented the elements of risk related to the welding process and the most widespread occupational diseases that can occur in the ranges of the welding operators. The following are presented the noxious emissions from welding and are determined by a practical method the emission of noxious at welding deposition of a welding sample, using the manual arc welding process with coated electrode.

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