Molds & Tooling
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Glass Fibre insufficient roundness
Problem Phenomenon
Glass Fibre circular products have roundness deviation >0.3mm
Cause Analysis
uneven cooling leads to different shrinkage in all directions; gate position causes local over-filling; demolding force asymmetric
Solution
1) annular uniform cooling to ensure consistent shrinkage in all directions; 2) symmetrically arrange gate position; 3) uniform ejection to avoid deformation
Key Takeaway
insufficient roundness is caused by uneven cooling; annular cooling is key
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