Processing Machinery
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PA12 Product Black Speck
Fenómeno do problema
Black specks in the product.
Análise das causas
Carbonized material in dead spots falls off; material contamination.; 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
Solução
①Thorough cleaning; ②shorten residence; ③regular disassembly inspection; ④material management.; 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
Conclusão principal
Black specks point to equipment cleanliness.; 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
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