Injection Molding
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PA6 Flash
Fenómeno del problema
Thin-sheet flash at the parting line and ejector pins.
Análisis de la causa
PA6 melt has low viscosity and easily penetrates into fitting clearances under high pressure; high injection pressure, insufficient clamping, and mold wear.
Solución
①Reduce injection/holding pressure;②calculate the clamping force;③repair the parting line and ejector pin clearances;④appropriately lower the material temperature to increase viscosity.
Conclusión clave
Low-viscosity nylon flash = a war between pressure and clearance.
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