Numerical Simulation of Extrusion Pressure of Non-Plug Flow Solid Conveying in Feeding Section

Abstract

According to the theory of extrusion pressure by molding in barrel of the single screw extruder specially designed for pure UHMWPE, extrusion pressure generated during the process must be sufficient while extrusion molding with single-screw extruder. The mathematical model for formation of extrusion pressure in feeding section during single-screw extrusion molding has been established. This paper conducted a research on theory of extrusion pressure which is part of n-lamina model of non-plug flow solid conveying in feeding section by single-screw extrusion molding.

Extrusion Pressure Analysis of Powder State Material of Non-Plug Solid Conveying in Feeding Section of Single Screw Extruder

“…The extrusion pressure formula of "N-lamina model" can basically reflect the change tendency of the extrusion pressure. The relationship between three kinds of friction coefficient and k is shown in Fig.2 [8] .…”