The nozzle or gas shield of a plasma torch is made of ____.
A) tungsten or hafnium
B) copper or brass
C) chrome plated stainless steel
D) ceramic or other high-temperature resistant material

Question

Quizplus · Accepted Answer

The nozzle or gas shield of a plasma torch must withstand high temperatures and prevent the plasma arc from touching the torch body. Therefore, ceramic or other high-temperature resistant materials are the best choices. Tungsten and hafnium can be used for electrodes in the torch but not for the nozzle or gas shield. Copper or brass would not withstand the high temperatures, and chrome plated stainless steel is not typically used in plasma torches.

The Nozzle or Gas Shield of a Plasma Torch Is