The E7018 electrode should not be weaved wider than ____ times the electrode diameter because very little shielding gas is produced.
A) one and one-half
B) two
C) two and one-half
D) three

Question

Quizplus · Accepted Answer

The E7018 electrode should not be weaved wider than two and one-half times the electrode diameter because very little shielding gas is produced. This is because the E7018 electrode is a low-hydrogen electrode, which means that it produces very little hydrogen gas when it is used. Hydrogen gas is a shielding gas, which helps to protect the weld pool from the atmosphere. If the electrode is weaved too wide, the shielding gas will not be able to protect the weld pool adequately, and the weld will be more likely to be contaminated.

The E7018 Electrode Should Not Be Weaved Wider Than ____