Injection Molding
13 مشاهدة
Radial Cracks in the Gate Area of PBT Injection-Molded Parts
ظاهرة المشكلة
Radial fine cracks appear around the gate of the product.
تحليل الأسباب
The holding pressure is too high or the holding is excessive, causing internal stress cracks in the gate area; the temperature gradient at the gate is too large, causing thermal stress.
الحل
Reduce the holding pressure; delay gate freezing to facilitate stress relaxation; reduce the mold temperature gradient in this area.
الخلاصة الأساسية
PBT gate area cracks are related to excessive holding.
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