Processing Machinery
4 조회수
Poor Plasticization Caused by Screw Wear of High-Density Polyethylene Extruder
문제 현상
Unmelted particles appear in the product, the surface is rough, and the plasticization quality decreases.
Screw wear weakens the shearing and mixing effects, and the melt quality is unstable.
원인 분석
（1）The screw wears out after long-term use, and the gap between the flight and the barrel increases
（2）The raw material contains hard fillers that accelerate wear
（3）The wear resistance of the screw material is insufficient
（4）Excessively high screw rotation speed aggravates wear
（5）The barrel temperature is set improperly, causing local overload
해결 방법
（1）Check the screw wear; repair or replacement is needed when the gap exceeds 0.2mm
（2）Select wear-resistant screw materials or bimetallic screws
（3）Reduce the screw rotation speed for raw materials containing fillers
（4）Optimize the barrel temperature settings to ensure each section is at a reasonable value within the 180-260°C range
（5）Regularly maintain the screw and clean the attachments on the screw surface
핵심 요약
Screw wear leads to decreased plasticization efficiency, and needs to be solved by selecting wear-resistant materials and regular maintenance.
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!