A 3-D time-dependent numerical model useful for the analysis of a dc transfered argon arc has ben developed. The model allows to investigate the influence on behaviour the arc and on the evolution of the temperature distribution inside the anode of an external magnetic field induced by a curent flowing in a moving leading wire parallel to the axis of the cathode. If the current of the arc and the current of the external conductor have opposite directions, magnetic fields mutually repel and the arc is deflected losing its natural axisymmetric configuration. This practice to obtain a deflected arc may find applications as in surface treatment of metallic substrates.
Time Dependent 3-D Numerical Simulation of Transferred Arc Plasma Treatment
COLOMBO, VITTORIO;GHEDINI, EMANUELE;MENTRELLI, ANDREA
2005
Abstract
A 3-D time-dependent numerical model useful for the analysis of a dc transfered argon arc has ben developed. The model allows to investigate the influence on behaviour the arc and on the evolution of the temperature distribution inside the anode of an external magnetic field induced by a curent flowing in a moving leading wire parallel to the axis of the cathode. If the current of the arc and the current of the external conductor have opposite directions, magnetic fields mutually repel and the arc is deflected losing its natural axisymmetric configuration. This practice to obtain a deflected arc may find applications as in surface treatment of metallic substrates.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
