Extrusion & Post
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Glass Fibre extruder screw severe wear
Problembeschreibung
After Glass Fibre extrusion 200h, screw and barrel wear reaches 0.5mm
Ursachenanalyse
Filler causes large screw wear; screw material hardness insufficient, not nitrided; processing temperature too high causes Glass Fibre adhering to screw, aggravating wear
Lösung
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
Wichtigste Erkenntnis
Screw wear is caused by filler friction and adhesion; wear-resistant screw and temperature control are key
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