Extrusion & Post
12 مشاهدة
MP extrusion pelletizing connected pellets
ظاهرة المشكلة
during MP extrusion pelletizing, pellets are connected to each other, not completely cut, forming bead strings
تحليل الأسباب
MP is soft; during pelletizing the knife cuts in but elastic recovery re-bonds the cut surface; pelletizing water temperature too low <40°C, not fully solidified; cutter speed mismatched with extrusion speed
الحل
1) raise pelletizing water temperature to 50-60°C, cut after full solidification; 2) increase cutter speed to ensure fast cutting; 3) cutter gap 0.01-0.02mm to ensure clean cutting; 4) replace flat cutting with rotary cutter to reduce connected pellets
الخلاصة الأساسية
connected pellets are caused by elastic recovery and low-temperature pelletizing; high-temperature water cutting and fast cutting are key
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