Processing Machinery
2 Aufrufe
PMMA Burnt
Problembeschreibung
Brown burnt marks appear at corners of PMMA products
Ursachenanalyse
Adiabatic compression of trapped air makes local temperature exceed the degradation temperature, decomposing and discoloring PMMA; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Lösung
Add venting at burnt locations; reduce end-stage speed; clean vent grooves; after adjustment, take samples continuously 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
PMMA burnt is handled by trapped air venting; after confirming effectiveness, solidify 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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