Molds & Tooling
5 مشاهدة
PC Sticking to Mold (Demolding Difficulty)
ظاهرة المشكلة
The product tightly wraps the core, demolding scratches it or even punches through, requiring manual intervention, and the cycle is affected.
تحليل الأسباب
PC has a large gripping force on the mold surface; excessive holding pressure, improper mold temperature, insufficient draft angle, and poor cavity polishing all aggravate mold sticking; the deep-cavity vacuum adsorption effect also superimposes.
الحل
①Reduce holding pressure and melt temperature; ②Polish the cavity and grind along the demolding direction; ③Increase the draft angle; ④Improve ejection balance; ⑤Set an air intake structure for deep-cavity parts to prevent vacuum adsorption.
الخلاصة الأساسية
PC has large demolding resistance, and mold draft and polishing must meet higher standards: reduce pressure and temperature to reduce gripping, draft and polishing to reduce resistance, deep cavities to prevent vacuum; PC's demolding margin design must be stricter than general-purpose materials.
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