Apparatus and methods for forming a plurality of elongated membe

Details Apparatus and methods for forming a plurality of elongated membe Apparatus and methods for forming a plurality of elongated membe

1977-03-14

1978-02-07

Lanham, C. W.

Metal deforming

By extruding through orifice

Expressing plural products

72467, 72468, 425463, B21C 3300, B21C 2502, B21C 2300

Patent

active

040720373

ABSTRACT:
A plurality of separate, elongated, metallic members, such as wires, are formed simultaneously, e.g., through the application of hydrostatic extrusion techniques, by passing a single metallic workpiece through a die with a plurality of apertures. The apertures extend longitudinally through the die from an entry wall of the die, and are so arrayed, and the die entry wall includes surfaces which are so configured, as to cooperate to create cross-shear stresses in the material of the workpiece in the vicinity of the apertures. These cross-shear stresses separate, or assist in separating, the workpiece into a plurality of elongated members, so that the forming process may take place at reduced operating pressures.

REFERENCES:
patent: 3321950 (1967-05-01), Gettig
patent: 3394579 (1968-07-01), Hall et al.
patent: 3901065 (1975-08-01), Schmehl

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