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← TechnologyWhich consequence results when insufficient tundish superheat causes incomplete metal flow from the tundish during continuous casting?
A)Formation of 'cold laps' defect✓
B)Increased alloy homogeneity occurs
C)Decreased centerline macrosegregation results
D)Enhanced dendritic arm spacing forms
💡 Explanation
A 'cold lap' forms because the solidification front advances too rapidly due to heat extraction dominating the cooling rate, resulting in incomplete fusion along seams; therefore, surface defects occur, rather than improved homogeneity under ideal conditions or microstructure alteration.
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