Analysis of Core Fracture in Drawing of Bimetal Rods and Wires

[+] Author and Article Information
B. Avitzur, R. Wu, S. Talbert, Y. T. Chou

Lehigh University, Institute for Metal Forming, Dept. of Materials Science and Engineering, Bethlehem, PA 18015

J. Eng. Ind 108(2), 133-140 (May 01, 1986) (8 pages) doi:10.1115/1.3187048 History: Received December 20, 1984; Online July 30, 2009


A criterion for the prevention of core fracture during drawing of bimetal wire is proposed. In order to account for the contrary effect of friction between codrawing and coextrusion on the occurrence of core fracture, a model is considered which assumes a deformation geometry slightly different from that used in the development of the criterion for core fracture during coextrusion [1]. Comparison between the two criteria for codrawing and coextrusion is presented. The effects of independent process parameters on the incidence of core fracture are summarized and discussed.

Copyright © 1986 by ASME
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