Injection Molding
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PC injection pressure 100-150
Fenómeno del problema
【Problem Phenomenon】PC filling pressure insufficient causing short shots, overpressure causes internal stress and flash
Análisis de la causa
PC has high viscosity requiring higher injection pressure 100-150MPa: thin-walled complex parts take the upper limit; excessive pressure introduces internal stress and flash；During on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience
Solución
Set according to the 100-150MPa window; thin wall takes the upper limit; reduce pressure to reduce stress after filling is satisfied；After adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Conclusión clave
PC injection 100-150MPa, high viscosity requires high pressure but prevent overpressure；After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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