Influence of billet geometry on the process parameters in cold indenting

Abstract

Cold indenting as a non-cutting technology has been successfully applied in the manufacturing of tools in different industrial brunches. By using this technology both – dies cavities and punches can be produced, but there are certain limitations mainly related to the material formability, form of the tool (dept, area…) and load capacity of the indenting punch. Investigations have shown that great number of parameters influenced to the successful application of this technology. The purpose of this paper is to present the theoretical and experimental investigation of cold indenting process in manufacturing of cone like punch, where special attention has been paid to the influence of workpiece geometry on the metal flow and other process parameters. Simulations of analyzed models have been performed by FEM, using CAMPform 2D program. FE modeling made possible to obtain different process data such as: deformed shape of the component, metal flow lines, strain and stress distribution and load-stroke diagram. Experimental investigations were carried out on 6300kN hydraulic press by using specially designed and made tolling. In addition, two geometrically different billets were used.