What electrode is not used to weld vertical down?

What electrode is not used to weld vertical down?

• A. E6010
• B. E7018
• C. E6013
• D. E6011

Answer: (B)

Vertical-down welding needs a weld metal that freezes quickly to resist gravity and keep the bead from sagging as you move downward. Electrodes that provide deep penetration and a fast-freeze weld pool—like E6010 and E6011—are favored for vertical-down passes because they deposit metal quickly and solidify promptly. E6013 is also workable in some vertical-down cases due to its easier arc and lighter penetration. The E7018, while excellent for many-position welding, deposits more slowly and requires strict drying and heat management; its weld metal doesn’t freeze as quickly, making it less suitable for vertical-down progression. For that reason, the electrode not used for vertical down is the E7018.

Vertical-down welding needs a weld metal that freezes quickly to resist gravity and keep the bead from sagging as you move downward. Electrodes that provide deep penetration and a fast-freeze weld pool—like E6010 and E6011—are favored for vertical-down passes because they deposit metal quickly and solidify promptly. E6013 is also workable in some vertical-down cases due to its easier arc and lighter penetration. The E7018, while excellent for many-position welding, deposits more slowly and requires strict drying and heat management; its weld metal doesn’t freeze as quickly, making it less suitable for vertical-down progression. For that reason, the electrode not used for vertical down is the E7018.