Experimental Study of Hydrostatic Extrusion

[+] Author and Article Information
B. Avitzur

Metallurgical Engineering Department, Lehigh University, Bethlehem, Pa.

H. C. Sortais

University of California, Berkeley, Calif.

J. Basic Eng 88(3), 658-666 (Sep 01, 1966) (9 pages) doi:10.1115/1.3645929 History: Received March 31, 1965; Online November 03, 2011


An experimental investigation of hydrostatic extrusion through conical dies using commercially pure lead billets was carried out with two different hydrostatic pressure systems; namely, a ram-type extrusion system (with a forced predetermined extrusion rate), and an injection pump (constant-pressure) system. Pressure characteristics, flow patterns, and the cavity, piping, and dead-zone effects were investigated. Experimental pressure results for both types of pressure systems agreed well with analytical predictions. Furthermore, dead-zone, cavity, and piping effects were found to be dependent upon the semicone angle and the amount of area reduction of the billet.

Copyright © 1966 by ASME
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