Buffing wheel composition for surface finishing Buffing (polishing) wheels used in finishing operations are commonly made of which material?

Difficulty: Easy

Correct Answer: cotton fabric

Explanation:

Introduction / Context:Buffing is a finishing process used to improve luster and smoothness of surfaces after machining or grinding. The wheel material and applied compounds determine the final appearance and micro-roughness.

Given Data / Assumptions:

  • Common shop buffing wheels (not abrasive grinding wheels).
  • Use of polishing compounds such as rouge, tripoli, or alumina.

Concept / Approach:Buffing wheels are typically built from layers of cloth—most commonly cotton—stitched together to form a flexible face. The cotton holds and delivers polishing compound to the work, enabling gentle abrasion and plastic flow at the surface, producing a high shine.

Step-by-Step Solution:Identify typical wheel structure: multiple plies of cotton cloth, stitched.Confirm function: carry compound and conform slightly to surface contours.Select “cotton fabric” as the correct material.

Verification / Alternative check:Supplier catalogs list stitched cotton, loose-leaf cotton, and ventilated cotton buffs as standard options.

Why Other Options Are Wrong:Metals (A) would scratch and are not used for buffing wheels; carbon/graphite (C/D) are not typical buffing wheel materials; glass fiber (E) relates to reinforced abrasive wheels rather than cloth buffs.

Common Pitfalls:Confusing buffing (cloth + compound) with polishing using fixed abrasive wheels; using the wrong compound for the substrate leading to smearing or residue.

Final Answer:cotton fabric

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