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← TechnologyWhich consequence results when exceeding the stock removal rate using a CNC surface grinder on hardened tool steel?
A)Improved surface finish overall results
B)Workpiece thermal stress and cracking✓
C)Consistent wheel wear and geometry
D)Optimized cycle time and production
💡 Explanation
Exceeding the material removal rate causes excessive frictional heating via abrasive wear. This induces thermal stress and potential cracking because the heat generated overcomes the cooling capacity, rather than uniformly removing material; therefore heat damage increases.
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