Injection Molding
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PA66 flash clamping force calculation
Fenómeno del problema
Product edge flash, still intermittently appears after increasing clamping force, and the parting line is gradually crushed
Análisis de la causa
PA66's low viscosity places high demands on clamping and mold precision; insufficient clamping force, too-high injection holding pressure, and worn uneven parting line all let melt penetrate micro-gaps
Solución
①Calculate clamping force according to projected area and reserve margin; ②Reduce injection and holding pressure; ③Regrind the parting line to restore fitting accuracy; after adjustment, take continuous samples to verify the effect, confirm stability before resuming mass production
Conclusión clave
PA66 flash treatment uses three approaches together: clamping force calculation, pressure control, and parting line maintenance; increasing pressure alone will only accelerate mold damage; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence
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