Injection Molding
6 조회수
PA6 '2079851475616104452 Weld Line Whitening
문제 현상
Confluence lines turned white, obvious on dark parts.
원인 분석
Cold front + gas and impurity enrichment; the reflection characteristics at the confluence differ from the matrix; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience; during troubleshooting, confirm item by item around key factors such as weld lines and whitening to avoid misjudgment.
해결 방법
①Raise temperature;②open or clean vent grooves at corresponding positions to ensure smooth gas discharge;③set an overflow well at the confluence to lead the cold front out of the cavity;④adjust gate position/quantity to change the material flow direction and confluence position;⑤increase injection speed to maintain melt front temperature and improve filling.
핵심 요약
PA6 white weld lines = 'cold front': raising temperature, venting, and overflow wells are the three axes; for appearance parts, weld lines must be hidden or eliminated; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence.
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!