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Alireza Javidi Shirvan (Institutionen för tillämpad mekanik, Strömningslära) ; Isabelle Choquet ; Håkan Nilsson (Institutionen för tillämpad mekanik, Strömningslära)
Swedish Production Symposium 14 (2014)
[Konferensbidrag, refereegranskat]

Modelling of the arc in electric arc welding is significant to achieve a better pro-cess understanding, thus gain better weld quality and a more efficient production process.It requires knowing the conditions at the surfaces of the anode and cathode. These condi-tions are very difficult to set from measurements and should be calculated. This requiresmodelling the complex physics of the electrode layer coupling electrode and arc. Thispaper presents a self-consistent electrode layer model that 1) is suited to welding applica-tions, 2) accounts for the known physics taking place, and 3) satisfies the basic conservationrequirements. The model is tested for different conditions. Its potentiality for welding ap-plications is shown through calculations coupling plasma arc, electrode and cathode layermodels. The calculations are done for both tungsten and thoriated tungsten electrode.

Nyckelord: thermal plasma, arc welding, electrode layer, sheath, electrode surface temperature, numerical simulation, OpenFOAM

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Denna post skapades 2014-10-04. Senast ändrad 2014-10-04.
CPL Pubid: 203710


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Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Strömningslära (2005-2017)


Hållbar utveckling

Chalmers infrastruktur

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Modelling of cathode-plasma interaction in short high-intensity electric arc - Application to Gas Tungsten Arc Welding