Extrusion & Post
12 مشاهدة
Rough inner wall of EVA extruded pipe
ظاهرة المشكلة
EVA extruded pipe inner wall roughness Ra>10μm affects fluid conveying efficiency
تحليل الأسباب
Mandrel surface rough or worn; insufficient internal cooling causing inner wall melt not fully sized; EVA melt elasticity causing uneven extrusion swell on inner wall
الحل
1) Polish mandrel to Ra<0.4μm; 2) Optimize internal cooling system with cooling water through mandrel; 3) Reduce extrusion rate to reduce elastic recovery influence; 4) Add small amount of low-elasticity resin to improve inner wall smoothness
الخلاصة الأساسية
Pipe inner wall roughness is caused by mandrel condition and insufficient cooling; polishing mandrel and internal cooling are key
هل كان هذا مفيدًا؟
0 شخص وجدوا هذا مفيدًا
شكرًا لك على ملاحظاتك!