Injection Molding
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POM check ring wear
Problembeschreibung
POM metering is unstable and product weight fluctuates
Ursachenanalyse
Check ring wear causes material leakage, and the actual injection amount of each shot fluctuates; 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
Regularly check the check ring clearance; replace when wear exceeds the standard; monitor weight with SPC; 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
Metering stability is guaranteed by the check ring condition; 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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