Processing Machinery
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HDPE Black Speck
Fenómeno del problema
HDPE light-colored product black specks
Análisis de la causa
Material accumulated in dead spots oxidizes and falls off; during on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based solely on experience; this mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Solución
Disassemble and clean dead spots; clean when changing material; trend monitoring; after adjustment, continuously sample 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
Conclusión clave
Black speck radical cure relies on disassembly cleaning and monitoring; 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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