Metal deforming – By pulling workpiece through closed periphery die – Utilizing plural metal-deforming tools
Patent
1991-10-15
1993-03-02
Crane, Daniel C.
Metal deforming
By pulling workpiece through closed periphery die
Utilizing plural metal-deforming tools
72280, 72281, B21C 104
Patent
active
051898977
ABSTRACT:
A method and apparatus for drawing steel wire to produce high tensile strength, steel wire with increased torsional ductility. The wire is drawn through a plurality of standard dies (14) in a wire drawing machine (10). The cross section of the wire is reduced by a constant reduction of about 15% to about 18% at each of the standard dies (14) with the exception of the final two dies (18, 19). The wire is then reduced by about 10% to about 90% of the typical reduction at the next to last die (18) and the remainder of the reduction at the final die (19).
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patent: 3955390 (1976-05-01), Geary
patent: 4960473 (1990-10-01), Kim et al.
"Delamination of Hard Drawn Eutectoid Steel Wires" by Browrigg et al, pub. in Advances in Fracture Research vol. 2, New Dehli, India, Dec. 1984.
"Making Quality Steel Wire at Optimum Productivity" by Zimmerman et al., published in Wire Journal International, Aug. 1989.
"Materials Response to Withdrawing" by Aernoudt, published Wire Journal International, Mar. 1989.
"Strain Aging in Cold Drawn Wire" by Lanner, published in Springs, vol. 22, May 1983.
Helfer Farrel B.
Joseph Patrick E.
Kim Dong K.
Lionetti Robert E.
Crane Daniel C.
Lewnadowski T. P.
The Goodyear Tire & Rubber Company
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