Material Drying
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POM start-up pre-drying
Problembeschreibung
Starting up after a few days of shutdown, the first batch of products has dense silver streaks
Ursachenanalyse
During shutdown the material absorbs moisture and moisture remains in the barrel, and the machine was started directly without treatment; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience; this mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Lösung
Dry the material for 2 hours before start-up; purge the barrel by air shot; mass production only after the first article passes inspection; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes to facilitate locating effective measures
Wichtigste Erkenntnis
When restarting after shutdown, first restore the material and equipment state; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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