Molds & Tooling
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Jump Heating Between Barrel Zones of PEEK
Problembeschreibung
[Problem Phenomenon] The PEEK barrel temperature settings jump too much between zones, plasticization is uneven, and the melt temperature is scattered
Ursachenanalyse
PEEK requires progressive heating from 330-360℃ in the rear zone to 370-400℃ in the front zone; zone jumping causes local overheating or insufficient plasticization; CKMold gives a zone reference of rear 320-380/middle 330-390/front 340-400/nozzle 350-410℃
Lösung
Set each zone temperature progressively from low at the rear to high at the front, with a gentle gradient between zones; calibrate the set values with actually measured melt temperature; check heater band and thermocouple condition when fluctuation is large; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Wichtigste Erkenntnis
PEEK barrel heating must be progressive and gentle — the actually measured melt temperature is the final judge; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the future
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