Processing Machinery
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PA12 Product Material Change Cleaning
Problem Phenomenon
Material change contamination problems.
Cause Analysis
Influence of residual old material; compatibility with other nylons.; 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
Solution
①Thorough cleaning; ②standardize procedure; ③verify first article; ④record material change.; 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
Key Takeaway
Material change cleaning is contamination prevention.; 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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