Why would some large plasma cutting machines have two gas hoses?
A) One is for cooling and one is for the plasma gas.
B) One is a backup in case the other is damaged by the hot sparks and slag.
C) One is for the plasma gas and one is for the shielding gas.
D) Torches only need one gas hose.

Question

Quizplus · Accepted Answer

The plasma cutting process requires two types of gases: plasma gas and shielding gas. The plasma gas is typically compressed air, nitrogen, or oxygen, which is used to create the plasma arc that cuts through the metal. The shielding gas, such as argon or helium, is used to protect the plasma arc from exposure to the air, which can cause it to lose power and accuracy. Therefore, large plasma cutting machines often have two gas hoses to supply both types of gas to the torch.

Why Would Some Large Plasma Cutting Machines Have Two Gas