A structural welder needs to perform a vertical-up fillet weld on 8 mm thick carbon steel using SMAW. The welding procedure specifies an E7018 electrode. Considering the requirements for vertical-up welding and using E7018, what technique is generally recommended for optimal bead profile and penetration?

Question: A structural welder needs to perform a vertical-up fillet weld on 8 mm thick carbon steel using SMAW. The welding procedure specifies an E7018 electrode. Considering the requirements for vertical-up welding and using E7018, what technique is generally recommended for optimal bead profile and penetration?

Answer options:

• A fast travel speed with a continuous stringer bead. ✅ A triangular weave technique with a slight pause at the toes.
• A downward progression with a whipping motion.
• A wide, U-shaped weave with rapid travel through the centre.

Correct answer: A triangular weave technique with a slight pause at the toes.

Explanation: For vertical-up welding with E7018, a triangular weave or slight upward manipulation with a brief pause at the toes is effective. This technique allows the puddle to build and solidify at the edges, preventing sag and ensuring good fusion into the sidewalls.