A Study of Shear-Spinnability of Metals

[+] Author and Article Information
Serope Kalpakcioglu

The Cincinnati Milling Machine Company, Cincinnati, Ohio

J. Eng. Ind 83(4), 478-483 (Nov 01, 1961) (6 pages) doi:10.1115/1.3664570 History: Received July 26, 1960; Online December 09, 2011


The deformation zone in shear-spinning is idealized for a two-dimensional process and maximum permissible thickness reduction without fracture is predicted in terms of the stress system in this zone. The effect of deviation from the sine law on the maximum reduction before fracture is shown analytically to be due to the influence of distortions of the unspun flange on the state of stress under the roller. The results of analytical work are compared with experimental data and good agreement has been obtained. The phenomenon of back extrusion in shear-spinning is shown to be the result of a compressive stress in the spun section parallel to the mandrel side and is greatly influenced by mandrel angle and deviation from the sine law.

Copyright © 1961 by ASME
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