Processing Machinery
3 조회수
PCABS residence time management
문제 현상
【Problem Phenomenon】PC/ABS parts discolor and show silver streaks after production interruption, heat history accumulates
원인 분석
PC/ABS stays too long in the barrel, the PC phase undergoes thermo-oxidative degradation; during interruption, the temperature should be lowered or the barrel emptied, refer to pure PC residence 6-12 minute level management; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based on experience alone
해결 방법
For interruption over 15 minutes, lower the barrel temperature; empty for long interruptions; scrap and verify the first batch after restart; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
핵심 요약
PC/ABS residence time must be managed, temperature reduction during interruption is discipline; 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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