Extrusion & Post
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MP extruder screw severe wear
Problem Phenomenon
after 200h of MP extrusion, screw and barrel wear reaches 0.5mm
Cause Analysis
filler causes large screw wear; screw material hardness insufficient, not nitrided; processing temperature high causing MP adhesion to the screw, aggravating wear
Solution
1) use a 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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