Question

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Explanation:

Analyze the 2G weld joint configuration

Using the Horizontal Groove Welding and 2G Weld Sequence knowledge points

In a horizontal groove weld (2G position), gravity pulls the molten weld pool downward. To counteract this, a specific multi-pass sequence is used to build up the weld joint systematically from bottom to top within each layer.

Determine the bead sequence

Using the 2G Weld Sequence knowledge point

The diagram shows a multi-pass groove weld with several labeled beads:

• The root pass at the very left is labeled A (Bead 1).
• The second layer consists of two beads: the lower bead B (Bead 2) and the upper bead C (Bead 3).
• The third layer (cover pass layer) consists of three beads:
• The bottom-most bead of this layer is D (Bead 4).
• The middle bead of this layer is E (Bead 5).
• The top-most bead of this layer is F (Bead 6).

Therefore, the fifth pass (Bead 5) corresponds to Bead E.

Answer:

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