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Which of the following weld type(s) is used to improve the wear resistance of a metal component?

a. Butt weld only
b. Butt weld and lap weld only
c. Butt weld, lap weld, and surface bead weld
d. Lap weld and surface bead weld only
e. Surface bead weld only

Answer :

Final answer:

Surface bead weld is the specific weld type used to improve the wear resistance of a metal component, rather than butt or lap welds. so the correct option is (b).

Explanation:

The type of weld used to improve the wear resistance of a metal component is the surface bead weld. Surface bead welding involves laying down a weld bead on the surface of a component to provide a hard, wear-resistant layer. Other welding types like butt weld and lap weld are primarily used to join two pieces of metal together, rather than specifically for wear resistance. Therefore, the correct answer is e. Surface bead weld only.

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