For DCEN, which end is used?

Prepare for the Sheet Metal Trade Exam. Boost your understanding with flashcards and multiple choice questions, each comes with hints and explanations. Ace the SMWIA 2nd Year exam!

Multiple Choice

For DCEN, which end is used?

Explanation:
In DCEN, you use a pointed end because this polarity places the electrode as the negative side, so the heat is directed mainly into the workpiece. A pointed tungsten tip concentrates the arc, giving better arc stability, sharper control, and cleaner penetration. A balled or flat end would spread the arc and make control more difficult, which is why those end shapes aren’t used with this polarity.

In DCEN, you use a pointed end because this polarity places the electrode as the negative side, so the heat is directed mainly into the workpiece. A pointed tungsten tip concentrates the arc, giving better arc stability, sharper control, and cleaner penetration. A balled or flat end would spread the arc and make control more difficult, which is why those end shapes aren’t used with this polarity.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy