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Progress in Plasma Processing of Materials, 1999

ISBN 打印: 1-56700-126-2

INVESTIGATION OF THE VELOCITY OF A MAGNETICALLY DRIVEN ARC IN A PLASMA TORCH

Abstract

In this report we present a new formula for the calculation of the rotational velocity of a magnetically driven arc in a plasma torch as function of the operating parameters: the current, the magnetic field and the axial gas velocity. The knowledge of the arc velocity is of great importance for the study of the erosion of cold electrodes in plasma torch, as it was shown in a series of companion papers. The investigated range of the parameters comprised by the formula is: current, 100−1760 A; magnetic induction, 0.005−3.9 T and axial gas velocity, 0.5−33 ms−1.
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