Thin wall steel cartridge cases

Details Thin wall steel cartridge cases Thin wall steel cartridge cases

1991-06-24

1992-07-14

Zimmerman, John

Stock material or miscellaneous articles

All metal or with adjacent metals

Intermediate article

428583, 428586, 102468, 148320, F42B 528

Patent

active

051302071

ABSTRACT:
High strength, high precision thin-walled cartridge cases are manufactured from a metal of interest selected from low alloy and carbon steels utilizing an extrusion and heat treating process. The cartridge blanks are extruded to a length greater than that necessary for the finished cartridge case and are provided with one or more peripheral grooves close to the open end of the extruded cartridge blank to prevent warpage during subsequent heat treatment.

REFERENCES:
patent: 1296842 (1919-03-01), Offott
patent: 2286064 (1942-06-01), Coxe
patent: 2698268 (1954-12-01), Lyon
patent: 3614816 (1971-10-01), Weyhmuller et al.
patent: 3873375 (1975-03-01), Bolen et al.
patent: 4041868 (1977-08-01), Rayle et al.
patent: 4246844 (1981-01-01), Segmiller et al.
K. T. Norris, "The Steel Cambridge Case", Ordinance, May-Jun. 1954, pp. 930-934.
L. Shiller, "Heat-Treating Shell Cases", Ordinance, Sep.-Oct. 1955, pp. 358-361.

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