Material Drying
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MS Drying Management
Fenómeno del problema
MS products have silver streaks and bubbles, insufficient or excessive drying, hygroscopicity management.
Análisis de la causa
MS water absorption is 0.3-0.4% and needs to be dried to below 0.1%; drying temperature 80-90℃×3 hours or more; excessive drying affects performance; moisture content control; sealed storage.
Solución
①Dry at 80-90℃×3 hours or more; ②verify moisture content <0.1%; ③avoid excessive drying; ④sealed storage to prevent moisture regain.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Conclusión clave
MS drying management is the quality foundation; 0.1% moisture content red line; sealed storage prevents secondary moisture absorption.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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