Extrusion & Post
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CEF extruder screw wear severe
Problem Phenomenon
After CEF extrusion for 200h, the wear of the screw and barrel reaches 0.5mm
Cause Analysis
The filler causes great wear to the screw; the screw material hardness is insufficient and not nitrided; the processing temperature is high, causing CEF to adhere to the screw and aggravate wear
Solution
1) Use a nitrided screw or a bimetallic screw SK-2 alloy; 2) Reduce the processing temperature to reduce adhesion wear; 3) Treat the filler with a coupling agent to reduce friction; 4) Regularly check the wear amount, replace in time if >0.3mm
Key Takeaway
Screw wear is caused by filler friction and adhesion; wear-resistant screw and temperature control are the key
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