Special features of design of the profile of gas–air circuits of low-noise plasma torches

Abstract

Results are presented of investigations into the effect of the form of the threaded swirl channel for gas flow in a plasma torch for cutting on the speed and shape of the plasma jet taking into account the profile of the gas–air circuit. The optimum values of the geometrical parameters of the swirl channel are presented.

Keywords:

• plasma torch
• swirl canals
• plasma gas
• plasma jet
• air–gas path
• profiling
• acoustic spectrum
• resonant frequencies
• noise radiation