Extrusion & Post
10 조회수
Severe Screw Wear of PU Extruder
문제 현상
After 200h of PU extrusion, screw and barrel wear reaches 0.5mm
원인 분석
Filler causes large wear on the screw; screw material hardness insufficient, not nitrided; processing temperature too high causing PU to adhere to the screw, aggravating wear
해결 방법
1) Use nitrided screw or bimetallic screw SK-2 alloy; 2) Reduce processing temperature to decrease adhesive wear; 3) Treat filler with coupling agent to reduce friction; 4) Regularly check wear, replace promptly when >0.3mm
핵심 요약
Screw wear is caused by filler friction and adhesion; wear-resistant screw and temperature control are key
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