Which factor can lead to poor blending of the weld toe during inspection?

• A. Incorrect filler metal selection
• B. Poor visual inspection
• C. Excessive weld metal height
• D. Electrode feed rate

Answer: (C)

The factor that can lead to poor blending of the weld toe during inspection is excessive weld metal height. When the weld metal height is too high, it can create a noticeable ridge or step at the junction between the weld and the base material. This irregular blending can compromise the integrity of the joint, leading to stress concentrations and potential failure points. The smooth transition from the weld toe to the base material is critical for ensuring soundness and durability in welded joints.

In addition, proper blending is important for visual inspection and can also affect the quality of subsequent nondestructive testing. If the weld toe is not well-blended, it may raise concerns during the inspection process, leading to further examination or even rejection of the weld according to standards. Achieving the correct weld height, along with proper technique and control during the welding process, is essential to ensuring that the weld meets the necessary quality criteria.