Processing Machinery
6 visualizações
POM Black Speck
Fenómeno do problema
Black specks appear on light-colored POM parts
Análise das causas
Carbonized material shedding from barrel dead spots or incomplete cleaning during material change; 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 literature and should be confirmed first during troubleshooting
Solução
Disassemble and clean the screw and nozzle; execute material change cleaning procedures; monitor black speck trends; 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
Conclusão principal
Radical cure of black specks relies on disassembly cleaning and cleaning procedures; after confirming effectiveness, solidify 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
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!