Extrusion & Post
10 조회수
Rough Inner Wall of PU Extruded Pipe
문제 현상
PU extruded pipe inner wall roughness Ra>10μm, affecting fluid transport efficiency
원인 분석
Mandrel surface rough or worn; internal cooling insufficient, inner wall melt not fully sized; PU melt elasticity causing uneven inner wall extrusion swell
해결 방법
1) Polish mandrel to Ra<0.4μm; 2) Optimize the internal cooling system, cooling water through the mandrel; 3) Reduce extrusion rate to decrease elastic recovery effect; 4) Add a small amount of low-elasticity resin to improve inner wall smoothness
핵심 요약
Pipe inner wall roughness is caused by mandrel condition and insufficient cooling; polishing the mandrel and internal cooling are key
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!