Extrusion & Post
9 Aufrufe
CEF extrusion surface rough
Problembeschreibung
The surface roughness of the CEF extruded product is Ra>5μm, exceeding the requirement
Ursachenanalyse
The extrusion temperature is low <160°C and the melt flow is unstable; the inner wall of the die is rough or damaged; the CEF melt elasticity causes uneven extrusion swell
Lösung
1) Increase the extrusion temperature to 160-220°C; 2) Polish the inner wall of the die to Ra<0.4μm; 3) Reduce the extrusion rate by 10-15%; 4) Add 0.3-0.5wt% external lubricant
Wichtigste Erkenntnis
Surface roughness is caused by low-temperature extrusion and die defects; increasing the temperature and polishing the die are the core countermeasures
War das hilfreich?
0 Personen fanden dies hilfreich
Vielen Dank für Ihr Feedback!