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RESEARCH PAPERS

A Study of Multiple Hole Extrusion

[+] Author and Article Information
Amit Bagchi

Mechanics, Mechanical and Aerospace Engineering Department, Illinois Institute of Technology, Chicago, Ill.

John G. Lenard

Department of Mechanical Engineering, University of New Brunswick, Fredericton, Canada

J. Eng. Mater. Technol 101(2), 135-138 (Apr 01, 1979) (4 pages) doi:10.1115/1.3443664 History: Received August 11, 1978; Online August 17, 2010

Abstract

Two mathematical models proposed by Avitzur and valid for axially symmetrical square extrusion are tested for their ability to predict the maximum power required in single as well as multiple hole extrusion. Comparison to experimental results obtained using plumber’s lead shows good correlation. The most significant parameter is shown to be the total area reduction. The velocity field in multiple hole extrusion—which by necessity must be nonaxially symmetrical—appears not to affect the power required for extrusion.

Copyright © 1979 by ASME
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