Molds & Tooling
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PPS product ejection whitening
Problem Phenomenon
Whitening at the ejection position.
Cause Analysis
Concentrated ejection force; the strength state of high-temperature material during demolding is special.; During on-site troubleshooting, verify item by item according to this mechanism, and 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
①Increase ejection area; ②sufficient cooling and setting; ③balanced ejection; ④ensure draft angle.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Ejection whitening is a stress signal; ejection system optimization.; 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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