Extrusion & Post
8 views
Severe EEA extruder screw wear
Problem Phenomenon
After 200h of EEA extrusion, screw and barrel wear reaches 0.5mm
Cause Analysis
Filler causes large wear on the screw; insufficient screw material hardness, not nitrided; processing temperature too high causing EEA to adhere to the screw and aggravate wear
Solution
1) Use nitrided screw or bimetallic screw SK-2 alloy; 2) Reduce processing temperature to reduce adhesive wear; 3) Treat filler with coupling agent to reduce friction; 4) Regularly check wear, replace in time when >0.3mm
Key Takeaway
Screw wear is caused by filler friction and adhesion; wear-resistant screw and temperature control are the key
Was this helpful?
0 people found this helpful
Thank you for your feedback!