DC plasma torches are devices which generate and maintain plasmas at temperatures above 10,000K. They are used for applications such as:
In Ablazeon's DC plasma torches, the plasma is generated by an electrical current passing through the gases flowing between a conical-shaped graphite cathode and a cylindrical anode. The use of carbon dioxide (CO2) and hydrocarbon (e.g. CH4) gas mixtures has key advantages when compared with conventional argon and helium gases. Thermal conductivity of the plasma is enhanced, leading to better process efficiency and heat transfer. In addition, carbon ionization generates an ionic current towards the graphite cathode, producing carbon deposition that compensates for the carbon cathode sublimation, thus resulting in longer cathode life.