Material Drying
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PA66 sealed conveying system
Fenómeno do problema
Centralized feeding system conveys dried PA66 to machines, moisture content exceeds standard afterward
Análise das causas
Conveying lines use ordinary compressed air or open conveying; dried material re-absorbs moisture from humid air during conveying; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience
Solução
Dried material conveying uses closed-loop dry air conveying system, lines heat-preserved; conveying time controlled within 10 minutes; machine hopper capacity configured for 30-minute usage; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Conclusão principal
Dried material conveying must be closed-loop to keep dry, small-capacity machine hoppers reduce exposure; 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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