Material Drying
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PA66 small-batch vacuum drying
Fenómeno del problema
R&D trial production has no dehumidifying dryer, PA66 sample drying effect poor
Análisis de la causa
Ordinary ovens are constrained by ambient humidity, even small trial batches can hardly stably reach 0.2% moisture content; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience
Solución
Small batches use vacuum oven 80℃×-0.09MPa×4 hours; material layer thickness less than 30mm; trial records indicate drying conditions; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Conclusión clave
Vacuum ovens are a reliable alternative for small-batch drying; 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 subsequent similar problems
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