What is the role of the white ceramic at the root of the argon arc welding torch nozzle?
Not ceramic is plastic, the main sealing role, to prevent argon leakage or air into, in addition, if not equipped with the protective cover, some small nozzles, such as No. 5 nozzles, welding will be out of the air hole
Never touched the torch.It's soft, not ceramic.Upstairs said, high temperature resistance.
