Material Drying
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PA66 drying record system
Problem Phenomenon
When silver streak quality problems occur, the drying state of the batch cannot be traced, responsibility definition difficult
Cause Analysis
Drying operations have no records, temperature, time and loading amount rely on operator memory, quality traceability chain broken; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience
Solution
Establish drying batch records: temperature, time, loading amount, dew point, moisture content sampling recorded item by item and linked to production batch numbers; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Drying records are the first link of the traceability system and must be institutionalized; 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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