FINITE-ELEMENT MODELING OF HOT FORMING OF BUSHES MADE FROM HIGH-STRENGTH CAST IRON WITH A GRADIENT DISTRIBUTION OF GRAPHITE INCLUSIONS OVER CROSS-SECTION

Abstract

Imitation modeling of direct hot extrusion of bushes made from high-strength cast iron is performed using finite-element method. The evolution of stress and strain fields during processing and the probability of crack formation are evaluated. The specific feature of the work is that during hot forming a special technique was used which permitted obtaining a gradient distribution of graphite inclusions over the cross-section of bushes. The results of modeling are used in certain technologies which are implemented in industrial practice.

Keywords

• hot extrusion, high-strength cast iron, bushes, metal matrix, graphite inclusions, finite-element method