Plasma cutting of metals with reversed polarity and mixed supply of gases

Abstract

Experience with the development and application of plasma cutting of metals using reversed polarity current and mixed gas supply is described. The high efficiency of plasma cutting with reversed polarity in both the manual and automatic cutting modes in the plant conditions is stressed. It is noted that the number of activations of the constricted arc can be greater than 1000 without failure of the electrode.

Keywords:

• plasma-arc cutting
• cutting plasmatron
• reversed polarity direct
• mixed gas supply