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Analysis of the Influence of the Composition of the Shielding Gas on Pressure Force and Heat Fluxes in Arc Welding
University West, Department of Engineering Science, Division of Manufacturing Processes. (PTW)ORCID iD: 0000-0003-2535-8132
Chalmers University of Technology. (Department of Applied Mechanics)
2014 (English)In: Proceedings of The 6th International Swedish Production Symposium 2014 / [ed] Johan Stahre, Björn Johansson,Mats Björkman, 2014, 1-8 p.Conference paper (Refereed)
Abstract [en]

A main problem raised by arc welding manufacturing is the determination ofthe optimal process parameters to ensure weld quality as well as resource efficient andsustainable production. To address this problem a better process understanding is required.In this study thermal magneto hydrodynamic modeling of a welding arc is used to reacha deeper insight into the influence of the composition of the shielding gas on the pressureforce and the heat fluxes to a workpiece. The model was implemented in the open sourcesimulation software OpenFOAM. Four different shielding gas mixtures combining argonand carbon dioxide were studied. When increasing the fraction of carbon dioxide the resultsshow a significant increase of the arc velocity and temperature with constriction of thetemperature field, a decrease of the pressure force and a significant increase of the heatfluxes on the base metal.

Place, publisher, year, edition, pages
2014. 1-8 p.
Keyword [en]
Thermal plasma, arc welding, shielding gas, arc pressure, heat flux, numerical simulatino, OpenFOAM
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING; ENGINEERING, Manufacturing and materials engineering
URN: urn:nbn:se:hv:diva-6621ISBN: 978-91-980974-1-2OAI: diva2:745921
The 6th International Swedish Production Symposium 2014
Knowledge Foundation
Available from: 2014-09-11 Created: 2014-09-11 Last updated: 2016-02-09Bibliographically approved

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