Injection Molding
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Glass Fibre injection molded product ejector whitening
Fenómeno del problema
Glass Fibre injection molded product shows white marks at ejector pin positions, ejector whitening, affecting appearance
Análisis de la causa
Ejector pin force too large causes local compression deformation and whitening; cooling time insufficient, product ejected before fully solidified; ejector pin area too small, stress concentration
Solución
1) Extend cooling time so product is fully solidified before ejection; 2) increase ejector pin area, use ejector plate instead of small pins; 3) reduce ejection speed to reduce impact force; 4) increase draft angle to reduce ejection force
Conclusión clave
Ejector whitening is caused by excessive ejection force and insufficient cooling; increasing ejector pin area and extending cooling time are key
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