Molds & Tooling
7 visualizaciones
PA66 internal shrinkage voids
Fenómeno del problema
Internal shrinkage voids found in sliced PA66 thick-wall parts, strength fails to meet standard
Análisis de la causa
Insufficient core feeding at thick walls forms shrinkage voids, premature gate freezing or insufficient holding pressure is the main cause; during on-site troubleshooting, verify item by item according to this mechanism, avoiding blindly adjusting the machine based only on experience
Solución
Thicken the gate to extend feeding time; calculate holding pressure and time according to wall thickness; raise mold temperature to delay surface solidification; after adjustment, take continuous samples to verify the effect, confirm stability before resuming mass production
Conclusión clave
Thick-wall shrinkage voids are guaranteed by feeding channels and holding pressure system; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar problems
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!