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← TechnologyWhich dimensional outcome results when mold temperatures decrease during aluminum casting?
A)Increased part shrinkage variations✓
B)Improved surface finish uniformity
C)Reduced localized cooling stresses
D)Enhanced material crystallization process
💡 Explanation
Increased variations appear when mold temperature decreases because rapid cooling results in non-uniform solidification due to temperature gradient driven thermal contraction; therefore variations increase rather than consistent finishes, because slow consistent temperature yields consistent material.
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