ABSTRACT
In this work we shall discuss some questions which arise in the modelling of the drawing or extrusion of metal through a die. This process is illustrated in the figure below. Its purpose is to turn a cylindrical ingot of some given cross section such as a rectangle into a cylindrical bar with a different cross section, such as an I-beam. https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781003062271/3a9a5b62-3a88-4cc5-923a-97624426ebfd/content/fig20_9.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/> It is assumed that the two ends are infinitely long, and that the flow is steady.
