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TECHNICAL PAPERS

Extrusion Through Spherical Dies—An Upper Bound Analysis

[+] Author and Article Information
W. A. Gordon

Automotive Division, IR/Torrington, 59 Field Street, Torrington, CT 06790

C. J. Van Tyne

Department of Metallurgical & Materials Engineering, Colorado School of Mines, Golden, CO 80401

S. Sriram

Research and Development, Ispat Inland Inc., 3001 East Columbus Drive, East Chicago, IN 46312

J. Manuf. Sci. Eng 124(1), 92-97 (Apr 01, 2001) (6 pages) doi:10.1115/1.1419198 History: Received August 01, 1999; Revised April 01, 2001
Copyright © 2002 by ASME
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References

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Figures

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Extrusion through a spherical die. The processing parameters that are used in the analysis are indicated.
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Schematic diagram for extrusion through a spherical die. The spherical coordinate system and three velocity zones are shown.
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Schematic diagram for extrusion through a spherical die. The radial velocity of a point in the deformation zone is determined by assuming proportionality of angles.
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Relative power terms for extrusion through a spherical die. The power terms associated with the extrusion through an equivalent conical die are shown for comparison.
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Relative extrusion pressures for extrusion through a spherical die. The pressures associated with the extrusion through an equivalent conical die are shown for comparison.
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Relative extrusion pressures for extrusion through a spherical die for the die design curve indicated
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Relative extrusion pressures for extrusion through a spherical die for the die design curve indicated
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Optimal die curvature for various reductions and friction conditions

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