Quick search
Go!

THE OPTIMISATION OF THE FEEDING ZONE OF A SINGLE SCREW EXTRUDER, FROM THE FLOWRATE POINT OF VIEW


JINESCU V. COSMIN
„POLITEHNICA” UNIVERSITY OF BUCURESTI

Issue:

MOCM, Number 13, Volume II

Section:

Issue No. 13 - Volume II (2007)

Abstract:

Feeding zone flowrate of screw extruder depends on the friction coefficients between the granular material and screw and the granular material and barrel. When the barrel is grooved on the internal surface, two friction coefficients are to be considered: one corresponds to the movement on the direction of the screw channel width (x), while the other corresponds to the movement on the direction of screw channel axis (z). Based on the performed experiments regarding the dependence of the friction coefficients on the allignement of grooves on the internal surface of the barrel and the calculations for the flowrate in the feeding zone, the conditions needed for the friction coefficients resulted. This gives us an indication on the roughness that the screw surface as well as the barrel internal surface in the feeding zone need to have to insure maximum flowrate in given geometrical conditions.

Keywords:

extruder, flowrate, geometrical conditions, friction coefficients.

Code [ID]:

MOCM200713V02S01A0065 [0001780]


Copyright (c) 1995-2007 University of Bacău