Processing Machinery
3 조회수
PPS product bubbles (degradation)
문제 현상
Bubbles increase after overheating.
원인 분석
PPS degrades at high temperature and produces gas; excessive residence accelerates it.; 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
해결 방법
①Control the upper temperature limit; ②shorten residence; ③clean the barrel; ④monitor actual temperature.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
핵심 요약
Distinguish bubbles from moisture versus degradation; PPS degradation temperature must be strictly guarded against.; 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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