Injection Molding
6 مشاهدة
HDPE '2079851475616104452 large dimensional shrinkage
ظاهرة المشكلة
HDPE part dimensions are overall smaller than expected.
تحليل الأسباب
HDPE shrinkage rate is high and varies greatly with wall thickness and holding pressure; the design value is too low.
الحل
①Modify the mold according to measured shrinkage; ②optimize holding pressure; ③unify measurement aging (crystallization continues); ④leave mold modification allowance for key dimensions.
الخلاصة الأساسية
HDPE dimensional management = measured shrinkage + unified aging.
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