Question

identify where to place the third pass for this 2g weld.

bead b
bead a
bead c
bead f
bead e
bead d

Explanation:

Analyze the 2G weld joint configuration

Using the Horizontal Groove Welding knowledge point, we identify that a 2G position represents a horizontal groove weld. In this orientation, the plates are vertical, and the weld axis runs horizontally. Gravity tends to pull the molten weld pool downward, which dictates a specific sequence for multi-pass welding to prevent sagging and ensure proper fusion.

Determine the multi-pass sequence

Using the 2G Weld Sequence knowledge point:

• Pass 1 (Root Pass): Bead A is placed directly in the root of the joint to fuse the two plates together.
• Pass 2 (Fill Pass): Bead B is placed along the bottom edge of the groove. Placing the second pass at the bottom provides a solid shelf or support for subsequent passes.
• Pass 3 (Fill Pass): Bead E is placed directly above Bead B, filling the upper portion of the second layer.
• Passes 4, 5, and 6 (Cap Passes): Beads D, C, and F form the final cover layer, typically deposited from bottom to top (D, then C, then F) to build upon each other.

Therefore, the third pass in this sequence is Bead E.

Answer:

• Bead B
• Bead A
• Bead C
• Bead F
• Bead E (Correct answer)
• Bead D