Molding Process
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CEF surface stress whitening
Fenómeno do problema
The surface of the stressed area of the CEF product shows stress whitening, affecting the appearance and strength
Análise das causas
The molecular orientation of CEF under local stress causes refractive index differences and whitening; the internal stress concentration area of the product
Solução
1) Reduce the injection speed to reduce orientation stress; 2) Annealing treatment at 80°C/2h to release stress; 3) Product design to avoid stress concentration sharp corners
Conclusão principal
Stress whitening is caused by orientation and internal stress; reducing orientation and annealing are the key
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