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US 12,759,038 B2Granted
Method of manufacturing a high-pressure cartridge case
AssigneeLuvata Ohio, Inc.
InventorBrian Swank
Life of this patent
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Abstract
A high pressure cartridge case is fabricated by: providing a wire or rod; cold forming a cartridge case into a drawn blank or a tubular component from sheared lengths of the wire or rod; annealing the cartridge case using a belt furnace, flame furnace, induction furnace, or a batch furnace; performing a machine ejector slot and trim on the cartridge case; forming the shoulder and neck of the cartridge case; performing a heat treatment of the cartridge case; and tempering the cartridge case.
Claims11
A method comprising:
- providing a wire or rod;
- cold forming a cartridge case into a drawn blank or a tubular component from sheared lengths of the wire or rod;
- annealing the cartridge case using a belt furnace, flame furnace, induction furnace, or a batch furnace;
- performing a machine ejector slot and trim on the cartridge case;
- forming a shoulder and a neck of the cartridge case;
- performing a heat treatment of the cartridge case;
- and
- tempering the cartridge case;
- wherein one or more of the following:
- the wire or rod is spheroidized annealed at finished size (SAFS) before cold forming;
- after performing the heat treatment and before tempering the cartridge case, the method further comprises oil quenching the cartridge case;
- or
- the wire or rod comprises a precipitation-hardened copper alloy.
10 more elements
Dependencies are inferred from the claim text.