Extrusion & Post
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PEEK Extrusion Temperature and Residence Management
Fenómeno del problema
【Problem Phenomenon】PEEK extruded profiles have unstable performance, and degraded material in melt stagnation zones peels off periodically
Análisis de la causa
The PEEK extrusion temperature is about 400-450℃, and the ideal residence time must be less than 30 minutes; stagnation in flow channel dead corners beyond the time limit causes degradation and peeling that contaminates the product; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solución
Design the extrusion channel to eliminate dead corners and calculate the residence time to be less than 30 minutes; regularly clean the die head and connector; precisely control temperature zones to prevent local over-limit; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Conclusión clave
PEEK extrusion at 400-450℃ with a 30-minute residence upper limit; dead corners are the culprit; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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