Experiments in extrusion, Part 1 - review of the theories of extrusion.

Abstract

The theories of extrusion are examined; considerable limitations exist in the analysis of extrusion conditions using either the semi-empirical approach, which is based on the assumption of homogeneous straining, or the slip-line approach. More information is required on the basic extrusion parameters such as yield stress and friction coefficient and on the variation of extrusion conditions with tooling geometry.