Extrusion & Post
12 مشاهدة
EMA Extruder Severe Screw Wear
ظاهرة المشكلة
After 200h of EMA extrusion, the wear of the screw and barrel reaches 0.5mm
تحليل الأسباب
Filler causes large wear on the screw; screw material hardness insufficient, not nitrided; processing temperature high, causing EMA to adhere to the screw and aggravate wear
الحل
1) Use nitrided screws or bimetallic screws of SK-2 alloy; 2) Lower 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
الخلاصة الأساسية
Screw wear is caused by filler friction and adhesion; wear-resistant screws and temperature control are key
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