Extrusion & Post
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CEF extruder screw wear severe
Problembeschreibung
After CEF extrusion for 200h, the wear of the screw and barrel reaches 0.5mm
Ursachenanalyse
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
Lösung
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
Wichtigste Erkenntnis
Screw wear is caused by filler friction and adhesion; wear-resistant screw and temperature control are the key
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