Tuesday 8
A. Arcs
Chair: M. Benilov, G.R. Jones - Each talk is 10'+2' duration
› 10:25 - 10:40 (15min)
› Cabannes
Influence of active shielding gas on the MIG-MAG welding process: globular to spray transfer mode
Quentin Castillon  1, *@  , Valensi Flavien  2, *@  , Stéphane Pellerin  3, *@  , Nadia Pellerin  4  , Krzysztof Dzierzega  5  , François Faubert  6@  , Francis Briand  7  , Jean-Pierre Planckaert  7@  
1 : Groupe de recherches sur l'énergétique des milieux ionisés  (GREMI)  -  Website
CNRS : UMR7344, Université d'Orléans
14 Rue d'Issoudun - BP 6744 45067 ORLEANS CEDEX 2 -  France
2 : Laboratoire Plasma et Conversion d'Energie  (LAPLACE)  -  Website
CNRS : UMR5213, Université Paul Sabatier [UPS] - Toulouse III, Institut National Polytechnique de Toulouse, Université Paul Sabatier (UPS) - Toulouse III
118 Route de Narbonne 31062 TOULOUSE CEDEX 9 -  France
3 : Groupe de recherches sur l'énergétique des milieux ionisés  (GREMI)  -  Website
CNRS : UMR6606, Université d'Orléans
14 Rue d'Issoudun - BP 6744 45067 ORLEANS CEDEX 2 -  France
4 : Conditions Extrêmes et Matériaux : Haute Température et Irradiation  (CEMHTI)  -  Website
Université d'Orléans, CNRS : UPR3079
Site Cyclotron 3A rue de la Férolerie 45071 Orléans Cedex 2 -  France
5 : Jagiellonian University
Marian Smoluchowski Inst. of Physics, ul. Reymonta 4, 30-059 Kraków -  Poland
6 : IUT de Bourges, Département Mesures Physique
Université d'Orléans
63 avenue de Lattre de Tassigny 18020 Bourges Cedex -  France
7 : CTAS-Air Liquide Welding
L'AIR LIQUIDE
Cergy-Pontoise 95315 -  France
* : Corresponding author

Due to its high productivity, gas metal arc welding with electrode wire is widely used in the industry. It is based on the creation of an electric arc between a consumable anode wire and the workpiece. The objective of this work is to understand some phenomena observed in MIG-MAG (Metal Inert Gas - Metal Active Gas) to improve the quality of the process and possibly suggest new operating methods.
For this purpose, this work will be based on a spectroscopic diagnostic to evaluate the distributions of temperature, density and metal vapor in the arc. Analysis by high speed camera is also used to observe the attachment of the arc column at the electrode wire, and the metal transfer. And finally, a micrographic analysis of electrodes is performed to study the influence of chemical and structural changes on the overall behavior of the process, and better understand the interaction between molten metal and plasma.


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