Interpretation of voltage measurements in cutting torches

L. PREVOSTO,; H. KELLY,; F. O. MINOTTI; B. MANCINELLI

Ciudad de México

Otro; XI Latin American Workshop on Plasma Physics; 2005

Anode-cathode and nozzle-cathode voltages, plenum pressure and gas mass flow measurements in a low current (30 A) cutting torch, operated with oxygen gas, are used as inputs for an electrical model coupled to a simplified fluid model, in order to infer some properties of the  plasma-gas structure that are difficult to measure.