Injection Molding
7 조회수
ASA Flash Overflow
문제 현상
【Problem Phenomenon】Flash at ASA parting line and ejector pins, trimming cost increases
원인 분석
Excessive injection pressure, insufficient clamping force, parting line wear or too deep venting cause overflow; ASA medium viscosity has medium sensitivity to gaps; during on-site troubleshooting, verify item by item according to this mechanism, avoid blindly adjusting the machine based only on experience
해결 방법
Reduce injection pressure and holding pressure; verify clamping force margin; repair parting line; vent depth controlled at material lower limit; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
핵심 요약
ASA flash first reduce pressure then check clamping, parting line wear must be repaired; 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 subsequent similar problems
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