Molds & Tooling
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Glass Fibre product elliptical deformation
Problem Phenomenon
Glass Fibre circular products have ovality >1.03 after demolding
Cause Analysis
asymmetric demolding force, product deformed by lateral force; uneven cooling, shrinkage differs in all directions
Solution
1) uniform ejection design with 8-point ejection to avoid lateral force; 2) annular uniform cooling; 3) extend cooling time for full setting
Key Takeaway
elliptical deformation is caused by asymmetric demolding force; uniform ejection is key
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