Extrusion & Post
12 مشاهدة
DSTDP vacuum vent section material overflow
ظاهرة المشكلة
DSTDP extrusion vacuum vent section material overflow, vent hole clogged
تحليل الأسباب
DSTDP melt viscosity low, overflowing at the vacuum vent section; vacuum vent section temperature on the high side, viscosity even lower, aggravating overflow; vent hole design improper
الحل
1) Lower vacuum vent section temperature 5-10°C to increase viscosity; 2) add baffle above the vent hole to prevent overflow; 3) increase screw speed to accelerate conveying and reduce residence
الخلاصة الأساسية
Material overflow is caused by low melt viscosity; temperature reduction and baffle are key
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