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← TechnologyWhich outcome occurs when exceeding the material Removal Rate?
A)Thermal cracking in hardmetals✓
B)Improved surface finish consistency
C)Reduced abrasive wear of the wheel
D)Diminished workpiece geometric accuracy
💡 Explanation
Thermal cracking arises because exceeding the material removal rate during hardmetal grinding generates excessive heat creating high internal stresses which trigger thermal fatigue. This leads to cracking rather than improved surface finish, therefore cracking dominates.
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