Processing Machinery
9 visualizaciones
Product black spots/burnt spots
Fenómeno del problema
Black or dark brown spots appear on the product, accompanied by burnt odor, with local material carbonization
Análisis de la causa
Processing temperature >400°C causes PEEK thermal decomposition and carbonization; material stays in the barrel too long (>5min); heater band temperature control accuracy insufficient, producing hot spots
Solución
Strictly control the maximum barrel temperature ≤400°C; shorten the total material residence time to ≤5 minutes; use a PID precise temperature control system (accuracy ±1°C)
Conclusión clave
Once PEEK thermal degradation occurs, it is irreversible and causes permanent damage to the product
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!