Which repair technique involves grinding away a damaged region to form a smooth transition with the undamaged surface?

Which repair technique involves grinding away a damaged region to form a smooth transition with the undamaged surface?

• A. Blend grinding
• B. Stock removal
• C. Polishing
• D. Surface dress

Answer: (A)

The concept here is restoring the surface so the repair blends smoothly with the surrounding metal. Blend grinding removes the damaged material and feathers the edges into the undamaged surface, creating a gradual, continuous transition rather than a sharp break. This smooth contour helps prevent stress concentrations and makes it easier to apply subsequent welds or finishes that will hold up under load. Stock removal focuses on removing material to reach sound metal, but it isn’t specifically about creating a feathered transition into the surrounding surface. Polishing is about producing a smooth surface finish and doesn’t inherently remove damaged regions or shape a transition. Surface dress isn’t a welding repair term for forming a blended edge.

The concept here is restoring the surface so the repair blends smoothly with the surrounding metal. Blend grinding removes the damaged material and feathers the edges into the undamaged surface, creating a gradual, continuous transition rather than a sharp break. This smooth contour helps prevent stress concentrations and makes it easier to apply subsequent welds or finishes that will hold up under load.

Stock removal focuses on removing material to reach sound metal, but it isn’t specifically about creating a feathered transition into the surrounding surface. Polishing is about producing a smooth surface finish and doesn’t inherently remove damaged regions or shape a transition. Surface dress isn’t a welding repair term for forming a blended edge.