Extrusion & Post
10 조회수
CEF vacuum section material spitting
문제 현상
The CEF extrusion vacuum section spits material and the vent hole is blocked
원인 분석
The CEF melt viscosity is low and overflows in the vacuum section; the vacuum section temperature is high and the viscosity is lower, aggravating the spitting; the vent hole design is improper
해결 방법
1) Reduce the vacuum section temperature by 5-10°C to increase the viscosity; 2) Add a baffle above the vent hole to prevent spitting; 3) Increase the screw speed to accelerate pushing and reduce residence time
핵심 요약
Material spitting is caused by low melt viscosity; reducing temperature and adding a baffle are the key
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