Extrusion & Post
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POE extruder screw severe wear
Problem Phenomenon
After 200h of POE extrusion, screw and barrel wear reaches 0.5mm
Cause Analysis
Filler causes large wear to the screw; screw material hardness insufficient, not nitrided; processing temperature too high causes POE to adhere to the screw, aggravating wear
Solution
1) Use nitrided screw or bimetallic screw SK-2 alloy; 2) Lower processing temperature to reduce adhesive wear; 3) Treat filler with coupling agent to reduce friction; 4) Regularly check wear, replace promptly when >0.3mm
Key Takeaway
Screw wear is caused by filler friction and adhesion; wear-resistant screw and temperature control are key
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