MODELLING OF ELECTRODE-ARC COUPLING IN ELECTRIC ARC WELDING
Paper i proceeding, 2014

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.

thermal plasma

sheath

numerical simulation

electrode layer

arc welding

electrode surface temperature

OpenFOAM

Författare

Alireza Javidi-Shirvan

Chalmers, Tillämpad mekanik, Strömningslära

Isabelle Choquet

Håkan Nilsson

Chalmers, Tillämpad mekanik, Strömningslära

Swedish Production Symposium 14

Drivkrafter

Hållbar utveckling

Styrkeområden

Produktion

Fundament

Grundläggande vetenskaper

Ämneskategorier

Strömningsmekanik och akustik