If a welding bead in 3F position is too convex, which of the following adjustments is part of the recommended fix?

If a welding bead in 3F position is too convex, which of the following adjustments is part of the recommended fix?

• A. Speed up across center, pause longer on the edges, decrease wire speed, keep inclination at 0-10 degrees
• B. Slow down across center, pause shorter on the edges, increase wire speed, keep inclination at 20-30 degrees
• C. Speed up across center, pause shorter on the edges, increase wire speed, keep inclination at 30 degrees
• D. Speed up across center, pause longer on the edges, increase wire speed, keep inclination at 60 degrees

Answer: (A)

Bead shape in a vertical fillet weld is controlled by heat input, travel speed, filler metal rate, and electrode angle. If the bead is too convex, the center is getting too much material (or heat) compared to the edges, creating a crown. The way to flatten it is to reduce center heat input while encouraging a bit more deposition at the edges, all with a light, stable tilt. Increase travel speed across the center to reduce heat input where the bead tends to rise, and pause longer on the edges to let the puddle fill and level there. Lower the wire-feed rate to decrease overall deposition, helping prevent excess buildup in the center. Keep the electrode angle shallow (essentially near a straight-on approach, around 0–10 degrees) to maintain a stable puddle and avoid driving the bead crown upward. Other options would either raise center heat (slower travel), increase deposition (faster wire feed or larger tilt), or disturb the puddle too much (more aggressive angle), which would not help flatten the bead.

Bead shape in a vertical fillet weld is controlled by heat input, travel speed, filler metal rate, and electrode angle. If the bead is too convex, the center is getting too much material (or heat) compared to the edges, creating a crown. The way to flatten it is to reduce center heat input while encouraging a bit more deposition at the edges, all with a light, stable tilt.

Increase travel speed across the center to reduce heat input where the bead tends to rise, and pause longer on the edges to let the puddle fill and level there. Lower the wire-feed rate to decrease overall deposition, helping prevent excess buildup in the center. Keep the electrode angle shallow (essentially near a straight-on approach, around 0–10 degrees) to maintain a stable puddle and avoid driving the bead crown upward.

Other options would either raise center heat (slower travel), increase deposition (faster wire feed or larger tilt), or disturb the puddle too much (more aggressive angle), which would not help flatten the bead.