Injection Molding
5 조회수
Severe EAA internal stress concentration
문제 현상
EAA products with internal stress >15MPa causing cracking during storage
원인 분석
Injection speed too fast causing large orientation stress; uneven cooling freezing in thermal stress; improper gate position causing concentrated flow orientation
해결 방법
1) Reduce injection speed to reduce orientation; 2) Uniform mold temperature to reduce thermal stress; 3) Anneal at 80°C/4h to release stress; 4) Optimize gate position
핵심 요약
Internal stress is caused by fast injection and uneven cooling; reducing speed, uniform cooling and annealing are key
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