Injection Molding
5 조회수
Severe Internal Stress Concentration in EVOH
문제 현상
EVOH product internal stress >15MPa causing cracking during storage
원인 분석
Injection speed too fast, orientation stress large; uneven cooling freezing thermal stress; gate location improper, flow orientation concentrated
해결 방법
1) Reduce injection speed to decrease orientation; 2) Uniform mold temperature to reduce thermal stress; 3) Anneal at 80°C/4h to release stress; 4) Optimize gate location
핵심 요약
Internal stress is caused by fast injection and uneven cooling; speed reduction, uniform cooling and annealing are key
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!