Injection Molding
5 조회수
Shrinkage marks in EAA '2079851475616104452
문제 현상
The surface of thick-walled areas of EAA injection molded products has depressions of 0.2-0.5mm, shrinkage marks
원인 분석
Insufficient holding pressure or short holding time; the gate freezes prematurely, holding pressure cannot be transmitted; large wall thickness differences, after the thin wall freezes, the thick wall cannot be fed
해결 방법
1) Increase the holding pressure to 70-90MPa; 2) Extend the holding to gate freezing +2s; 3) Design the product to reduce wall thickness differences with gradual transitions; 4) Add supplementary gates in thick-walled areas
핵심 요약
Shrinkage is caused by insufficient holding pressure and wall thickness differences; high-pressure holding and multiple gates are the core countermeasures
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!