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- W2368643193 abstract "Numerical simulation of welding arc in axial field(AMF) at atmospheric pressure is performed with an ideal hydromechanics dynamics(MHD) model of coupled plasma and cathode.Hence the mechanism of the welding arc affected by the AMF is analyzed.The calculation results indicate that,with the increase of AMF,the cathode arc root and the arc column near the cathode shrink,the plasma temperature near the cathode increases,the arc column near the anode expands radically,yet the core temperature decreases;the current density and the pressure of the anode arc root are both torus in configuration,the heated area of the anode increases,the plasma temperature near the anode decreases,the maximum temperature of the anode surface decreases,a temperature flat appears,and the heat transferred to the anode increases.The AMF produces a magnetic sucking effect through inducing arc rotating near the anode by the Lorentz effect which will enhance upstream cooled gas flow.The effect of low pressure in plasma core,together with the cooling effect by upstream cool gas,will shrink the cathode arc root and the arc column near the cathode.The shrinkage of the cathode root enhances the cathode jet,as a result,the expansion of arc column near the anode is limited." @default.
- W2368643193 created "2016-06-24" @default.
- W2368643193 creator A5080939855 @default.
- W2368643193 date "2013-01-01" @default.
- W2368643193 modified "2023-09-23" @default.
- W2368643193 title "Simulation of Welding Arc in Axial Magnetic Field" @default.
- W2368643193 hasPublicationYear "2013" @default.
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