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RESEARCH PAPERS

Effects of Type of Lubricant in Cold Extrusion of Sintered Preforms

[+] Author and Article Information
T. Tabata, S. Masaki, K. Hosokawa

Department of Mechanical Engineering, Osaka Institute of Technology, 5 Omiya, Asahi-ku, Osaka 535, Japan

J. Eng. Mater. Technol 105(2), 128-131 (Apr 01, 1983) (4 pages) doi:10.1115/1.3225626 History: Received February 02, 1982; Online September 15, 2009

Abstract

Four types of lubricant, i.e., dry film, liquid, powdered solid and liquid with powdered solid lubricants, were evaluated for cold extrusion of sintered copper powder preforms. Effects of the lubricants on extrusion pressure, densification and crack formation were examined with respect to variations of density of the preforms, extrusion ratio and die angle. It was found that liquid and liquid with powdered solid lubricants were not suitable for extrusion of sintered preforms.

Copyright © 1983 by ASME
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