Development of a hot channel for a DC plasma torch

A design of a hot graphite channel for a DC plasma torch has been created, which provides heating of a graphite target to a temperature above 3000 K without the occurrence of “mechanical” erosion due to the creation of a more homogeneous stationary gas flow of argon and nitrogen by a DC plasma torch. It turned out that one screw chamber is sufficient in argon, and in molecular gas (nitrogen) it is necessary to use a screw chamber together with dividers.