Molds & Tooling
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CEF product elliptical deformation
Problem Phenomenon
The ovality of the CEF round product after demolding is >1.03
Cause Analysis
The demolding force is asymmetric and the product is deformed by lateral force; the cooling is uneven and the shrinkage is anisotropic
Solution
1) Uniform ejection design, 8-point ejection to avoid lateral force; 2) Annular uniform cooling; 3) Extend the cooling time for sufficient sizing
Key Takeaway
Elliptical deformation is caused by asymmetric demolding force; uniform ejection is the key
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