Molds & Tooling
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PEEK Warpage and Uneven Crystallization
Fenómeno del problema
【Problem Phenomenon】PEEK flat plates and frame parts warp and deform, and the effect of adjusting holding pressure is inconsistent
Análisis de la causa
Uneven shrinkage and crystallization are the root of warpage: mold temperature imbalance, insufficient holding pressure, and inconsistent cooling amplify the differences in crystallinity and shrinkage among regions; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solución
Balance mold temperature and cooling water circuit design; optimize holding time and pressure curve; for fiber grades, adjust the gate to homogenize orientation; anneal for setting when necessary; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Conclusión clave
PEEK warpage is a crystallization stress problem; mold temperature balance comes before holding pressure adjustment; after confirming effectiveness, fix 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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