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← ScienceWhich risk increases when injection molding Reynolds number exceeds limit?
A)Polymer degradation in the feed
B)Turbulent flow marks part surface✓
C)Increased weld line strength
D)Decreased required resin drying
💡 Explanation
Turbulence increases because exceeding Reynolds number causes transition from laminar to turbulent flow, creating surface defects; therefore the answer is flow marks rather than reduced resin drying, occurring for other reasons.
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