Extrusion & Post
11 görüntüleme
MP extrusion pelletizing connected pellets
Sorun Belirtisi
during MP extrusion pelletizing, pellets are connected to each other, not completely cut, forming bead strings
Neden Analizi
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
Çözüm
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
Temel Çıkarım
connected pellets are caused by elastic recovery and low-temperature pelletizing; high-temperature water cutting and fast cutting are key
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