Extrusion & Post
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PC/ABS material change cleaning
Problem Phenomenon
Contamination and delamination after material change.
Cause Analysis
Incomplete cleaning, old material remains.; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based on experience alone; this mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Solution
①Thorough cleaning; ②standardize the process; ③verify first article; ④record material change.; 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 the parameter changes, to facilitate locating the effective measures
Key Takeaway
Material change cleaning is the key to delamination prevention.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems later
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