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