Extrusion & Post
10 조회수
Rough surface in EAA extrusion
문제 현상
The surface roughness of EAA extruded products is Ra>5μm, exceeding the requirement
원인 분석
Extrusion temperature too low <180°C, melt flow unstable; inner wall of the die rough or damaged; EAA melt elasticity, uneven extrusion swell
해결 방법
1) Raise the extrusion temperature to 180-240°C; 2) Polish the inner wall of the die to Ra<0.4μm; 3) Reduce the extrusion rate by 10-15%; 4) Add 0.3-0.5wt% external lubricant
핵심 요약
Surface roughness is caused by low-temperature extrusion and die defects; raising the temperature and polishing the die are the core countermeasures
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!