A dense structure of grinding wheel is not used for the_____________________?
Correct answer: D. Ductile material
- A. Finishing cuts
- B. Hard materials
- C. Brittle materials
- D. Ductile material
Explanation
A dense grinding-wheel structure is unsuitable for ductile materials because chips clog its small pores and cause wheel loading. Ductile materials generally require a more open structure for chip clearance.
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