Processing Machinery
3 조회수
PCABS shutdown and restart
문제 현상
【Problem Phenomenon】PC/ABS directly starts up after shutdown, the first batch of parts has poor quality
원인 분석
After shutdown, the barrel material accumulates heat history, direct production at restart brings degraded material into parts; insufficient preheating also causes uneven melt temperature; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based on experience alone
해결 방법
Fully preheat before restart and air-shoot to verify melt temperature; scrap the first 3-5 shots; empty and clean for long shutdowns; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
핵심 요약
PC/ABS restart preheats and air-shoots first, the first shots are scrapped without taking chances; 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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