Injection Molding
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Large shrinkage rate of POM '2079851475616104452
Problem Phenomenon
POM crystalline shrinkage rate 1.8-2.5% is high and anisotropy is large.
Cause Analysis
POM has high crystallinity (70-80%), large volume shrinkage during cooling, and large shrinkage difference between flow direction and perpendicular direction.
Solution
Reserve more shrinkage allowance in mold design; increase holding pressure time and pressure; uniform cooling.
Key Takeaway
POM high shrinkage is the primary consideration in precision '2079851475616104452 design.
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