Injection Molding
5 조회수
MP '2079851475616104452 premature gate freeze
문제 현상
MP injection molded product gate freezes within 0.5-1s in the holding stage, holding pressure cannot be transmitted, product shrinkage severe
원인 분석
gate size too small, diameter <1mm, causing fast freezing; injection temperature low; mold temperature low, accelerating gate cooling
해결 방법
1) increase gate diameter to 1.5-2mm; 2) raise injection temperature to 150-170°C; 3) raise mold temperature to 40-50°C to delay gate freezing; 4) stepwise decay of holding pressure rather than sudden release
핵심 요약
premature gate freezing is caused by small gate and low temperature; enlarging the gate and raising temperature are fundamental measures
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