Extrusion & Post
1 views
HDPE extrusion screw slipping
Problem Phenomenon
During plasticization, the screw makes abnormal noise, the discharge fluctuates, and the current fluctuates greatly.
Cause Analysis
The feed section temperature is too high, and the particles melt too early and wrap the screw causing slipping; or hopper bridging and abnormal particle shape make conveying unstable.
Solution
①Lower the feed section temperature and strengthen hopper neck cooling; ②check for feeding bridging; ③evaluate screw feed section wear; ④rationalize the particle/powder ratio.
Key Takeaway
For discharge pulsation, first check the feed section temperature and feeding.
Was this helpful?
0 people found this helpful
Thank you for your feedback!