Injection Molding
5 조회수
Sink Marks in CMC '2079851475616104452
문제 현상
Surface depression of 0.2-0.5mm in thick-walled areas of CMC injection molded products (sink marks)
원인 분석
Holding pressure is insufficient or holding time is short; gate freezes prematurely and holding pressure cannot be transmitted; wall thickness difference is large, and after the thin wall freezes, the thick wall cannot be fed
해결 방법
1)Increase holding pressure 70-90MPa; 2)Extend holding to gate freezing +2s; 3)Product design reduces wall thickness differences with gradual transitions; 4)Add supplementary gates in thick-walled areas
핵심 요약
Sink marks are caused by insufficient holding and wall thickness differences; high-pressure holding and multiple gates are core countermeasures
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!