Injection Forging of Industrial Components From Thick-Walled Tubes

[+] Author and Article Information
D. Colla

Dipartimento di Innovazione Meccanica e Gestionale, Universitá di Padova, Padova 35131, Italy

S. B. Petersen, R. Balendra

Department of Design, Manufacture and Engineering Management, University of Strathclyde, 75 Montrose Street, Glasgow G1 1XJ, Scotland

P. A. F. Martins

Departamento de Engenharia Mecânica, Instituto Superior Técnico, Av. Rovisco Pais, 1096 Lisboa Codex, Portugal

J. Manuf. Sci. Eng 119(4A), 537-541 (Nov 01, 1997) (5 pages) doi:10.1115/1.2831184 History: Received June 01, 1995; Revised February 01, 1996; Online January 17, 2008


Traditional forging techniques are limited to the manufacture of components from solid materials; tubes may only be formed with a form of internal support to prevent the collapse of the work-material under axial forces. There is, however, the scope for achieving sufficiently large plastic deformation of tubes by injection into a diecavity; the extend of such deformation may be enlarged by preforming. The preform is designed to prevent the onset of one of the previously-identified modes of failure; the geometry of the preform was generated using a finite element model which was conditioned on the basis of a large set of experimental results. This paper discusses the possibility of applying the injection forging process in order to allow the complete forming of a geometrically complex tubular component in a single station. The work is supported by finite element modelling in conjunction with metal experiments in aluminum. Metallographic observations and micro-hardness measurements were performed to validate the approach.

Copyright © 1997 by The American Society of Mechanical Engineers
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