Investigation of systems for gas vortex stabilization of plasma torches

Abstract

Several designs of plasma torches for cutting of metals are used to analyse the effect of design special features of the gas-air circuit on the efficiency of operation of the gas vortex stabilisation system. It is shown that the distribution of the flows of the plasma-forming gas in the cross section of the circuit is non-uniform. A method of stabilization by changing the dimensions of the expansion chamber is analysed. The main directions for further studies are outlined.

Keywords:

• Plasmatron
• designing
• flow dynamics
• velocity
• dynamic pressure
• air–gas path
• profiling
• gas rotating stabilisation
• swirl canals
• expansion chamber
• plasma gas
• plasma jet, computational modelling