Influence of welding current in plasma–MIG weld process on the bead weld geometry and wire fusion rate

Resende, André Alves de; Ferraresi, Valtair Antonio; Scotti, Américo; Dutra, Jair Carlos

doi:10.1080/09507116.2010.527481

Cited by 18 publications

(8 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Plasma MIG welding is a hybrid welding process first proposed by Esser et al in 1972 [1,2]. It is a combination of plasma and metal inert gas (MIG) welding in a single torch which seeks to combine and optimize the benefits of both welding processes [3]. The technology has undergone numerous improvements over the years to make it suitable for practical use.…”

Section: Introductionmentioning

confidence: 99%

Study on factors affecting the droplet temperature in plasma MIG welding process

Mamat

Tashiro

Tanaka

et al. 2018

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

In the present study, the mechanism to control droplet temperature in the plasma MIG welding was discussed based on the measurements of the droplet temperature for a wide range of MIG currents with different plasma electrode diameters. The measurements of the droplet temperatures were conducted using a two color temperature measurement method. The droplet temperatures in the plasma MIG welding were then compared with those in the conventional MIG welding. As a result, the droplet temperature in the plasma MIG welding was found to be reduced in comparison with the conventional MIG welding under the same MIG current. Especially when the small plasma electrode diameter was used, the decrease in the droplet temperature reached maximally 500 K. Also, for a particular WFS, the droplet temperatures in the plasma MIG welding were lower than those in the conventional MIG welding. It is suggested that the use of plasma contributes to reducing the local heat input into the base metal by the droplet. The presence of the plasma surrounding the wire is considered to increase the electron density in its vicinity, resulting in the arc attachment expanding upwards along the wire surface to disperse the MIG current. This dispersion of MIG current causes a decrease in current density on the droplet surface, lowering the droplet temperature. Furthermore, dispersed MIG current also weakens the electromagnetic pinch force acting on the neck of the wire above the droplet. This leads to a larger droplet diameter with increased surface area through lower frequency of droplet detachment to decrease the MIG current density on the droplet surface, as compared to the conventional MIG welding at the same MIG current. Thus, the lower droplet temperature is caused by the reduction of heat flux into the droplet. Consequently, the mechanism to control droplet temperature in the plasma MIG welding was clarified.

show abstract

Section: Introductionmentioning

confidence: 99%

Study on factors affecting the droplet temperature in plasma MIG welding process

Mamat

Tashiro

Tanaka

et al. 2018

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…11. Plasma-MIG surfacing scheme [78] MIG. At the same time, each arc is powered by its own welding source (Fig.…”

Section: Progress In Additive Manufacturingmentioning

confidence: 99%

“…12. The scheme of the 'soft start' of the plasma-MIG process [82] arc ignition from the melting electrode and the lack of stabilization of the plasma arc. The 'soft start' method shown in Fig.…”

Section: Progress In Additive Manufacturingmentioning

confidence: 99%

Progress in Additive Manufacturing

2023

Prog. Phys. Met.

View full text Add to dashboard Cite

The article analyses the current trends in the development of additive manufacturing (AM) technologies. In recent years, the development of additive technologies is one of the industry priorities. Additive technologies, first of all, make it possible to implement effectively any design and engineering ideas in high-tech industries, such as aircraft construction, engine and engine building, rocket engineering, modern electronic devices, etc. The expansion of the range of materials for additive technologies will facilitate their introduction into mass production. Meanwhile, the development of breakthrough scientific and technical solutions in the field of AT is impossible without new powder materials. Currently, there is an evident fundamental problem, namely, the lack of comprehensive scientific research aimed at developing new powder materials for additive technologies, adapting these materials to the requirements of modern additive manufacturing machines and studying the properties of products obtained by additive technology with various variations of technical parameters.

show abstract

“…Plasma MIG welding is a hybrid welding method that utilize the advantages of plasma arc and MIG welding 1,2) . In Plasma MIG welding, the plasma electrode is attached just below the contact tip.…”

Section: Introductionmentioning

confidence: 99%

Observation of Metal Transfer in Plasma MIG Welding Process

Mamat

Tashiro

Tanaka

2017

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY

View full text Add to dashboard Cite

Metal transfer behavior in Plasma MIG welding process was observed by means of shadow graph method. Laser system was used in order to eliminate the arc effect, and the metal transfer was clearly observed by using high speed video camera. In this study, metal transfer in conventional MIG welding was also observed for comparison between both processes. As a result, under the same MIG current setting, the transfer type for both Plasma MIG welding and conventional MIG welding were observed to be in different mode, in which Plasma MIG welding behaved as a globular mode, whereas conventional MIG welding has already became spray mode. It is suggested that, the presence of plasma current in Plasma MIG welding process affected the MIG current distribution for not concentrated at wire tip but dispersed to some ranges on wire between plasma electrodes and wire tip. These phenomena which led to the dispersion of force concentration resulted in a lower transfer frequency and bigger droplet size. These factors then were identified as dominant factors that influenced the droplet temperature.

show abstract

Influence of welding current in plasma–MIG weld process on the bead weld geometry and wire fusion rate

Cited by 18 publications

References 1 publication

Study on factors affecting the droplet temperature in plasma MIG welding process

Study on factors affecting the droplet temperature in plasma MIG welding process

Progress in Additive Manufacturing

Observation of Metal Transfer in Plasma MIG Welding Process

Contact Info

Product

Resources

About