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← TechnologyWhich outcome occurs when excessive downfeed pressure is applied during creep-feed grinding of turbine blade profiles?
A)Wheel glazing and thermal distortion✓
B)Increased material removal rate
C)Improved surface finish quality
D)Decreased wheel wear and lifespan
💡 Explanation
Wheel glazing and thermal distortion occur in creep-feed grinding using high downfeed, because increased frictional heat exceeds the coolant capacity, leading to bond breakdown in the grinding wheel. Therefore, the blade's surface is damaged, rather than optimized, due to thermal effects.
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