NOZZLE FOR A LIQUID-COOLED PLASMA TORCH, NOZZLE CAP FOR A LIQUID-COOLED PLASMA TORCH AND PLASMA TORCH HEAD COMPRISING THE SAME

摘要

Nozzle for a liquid cooled plasma torch, comprising a nozzle bore for the exit of a plasma gas beam at a nozzle tip, a first section, of which the outer surface is essentially cylindrical, and a second section connecting thereto towards the nozzle tip, of which second section the outer surface tapers essentially conically towards the nozzle tip, wherein a) at least one liquid supply groove is provided and extends over a part of the first section and over the second section in the outer surface of the nozzle towards the nozzle tip and precisely one liquid return groove separate from the liquid supply groove(s) is provided and extends over the second section, or b) precisely one liquid supply groove is provided and extends over a part of the first section and over the second section in the outer surface of the nozzle towards the nozzle tip and at least one liquid return groove separate from the liquid supply groove is provided and extends over the second section.