Which of the following is a way to minimize erosion of the tungsten electrode?
A) Use as high a current as possible.
B) Use an air-cooled torch.
C) Use as small a size of tungsten electrode as possible.
D) Use DCEN current.

Question

Quizplus · Accepted Answer

Using DCEN current (Direct Current Electrode Negative) helps to minimize erosion of the tungsten electrode as the heat flows from the workpiece to the electrode. This helps to protect the electrode and reduce erosion. Using a higher current or smaller electrode, as in choices A and C, would actually increase erosion. Using an air-cooled torch, as in choice B, may help with heat dissipation but would not directly minimize tungsten electrode erosion.

Which of the Following Is a Way to Minimize Erosion