| abstract |
A nozzle assembly is provided which is adapted for use with a plasma torch and includes a threaded nozzle holder having cooling ducts therein and a threaded nozzle free of cooling ducts, and adapted to be screwed into the nozzle holder. The nozzle is fashioned with a conical contact surface which is adapted to rest against a corresponding contact surface in the nozzle holder and is designed, together with the threads of the nozzle and holder, so that a desired contact pressure between the conical surfaces of the nozzle and holder is maintained regardless of the temperature of the nozzle. |