Aluminum Wire by Cold Hydrostatic Extrusion

[+] Author and Article Information
P. F. Hettwer, J. C. Uy, D. R. McCann

Research and Development Division, Allis-Chalmers Manufacturing Co., Milwaukee, Wis.

J. Basic Eng 91(4), 822-829 (Dec 01, 1969) (8 pages) doi:10.1115/1.3571226 History: Received June 04, 1969; Online November 03, 2011


Electrical grade aluminum wire was made by hydrostatic extrusion. Extrusion ratios ranged from 2.5:1 to 630:1. The surface finishes, diametric variations, and electrical and mechanical properties were found to compare favorably with aluminum wire drawn through conventional dies at lower composite reductions. Several process variables, including the effects of an external draw stress, die angle, and land length of die, were also investigated. The extrusion pressures and yield strengths of the extruded wires were theoretically calculated, using Pugh’s analysis for the total work done and the total strain in hydrostatic extrusion. These values were compared with the experimental results.

Copyright © 1969 by ASME
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