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← TechnologyWhich consequence results when the pouring temperature is below the optimal range during investment casting?
A)Reduction in pattern deformation defects
B)Increased micro-porosity within the casting✓
C)Improved alloy homogeneity throughout volume
D)Minimized reactions with mold materials
💡 Explanation
Increased micro-porosity occurs because insufficient heat input impacts the solidification front. Lower temperature affects the liquid feeding mechanism in the casting, therefore shrinkage pores more readily occur, rather than the complete filling of alloy and prevention of vacancies.
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