Comparison of different spatial mathematical models of the extruder screw channel

Abstract

One of the important problems in the processing of polymeric materials by an extrusion method is the occurrence of local overheating. The aim of this work is to identify these areas and finding ways to reduce their influence on the finished product. The paper discusses the heat and mass transfer processes, which occur in the extruder screw channel. In the work a comparison of the results, obtained by various mathematical models, was made: a flat channel model (full-scale), and the screw channel models with regard to the gap between the screw crest and the inner surface of the body and without it. The investigation of the possibility of using the inverse movement principle in the study of the problems, associated with the cable insulating on the extrusion equipment was made. As a result of research, temperature fields at the outlet of the extruder channel were obtained.