Boron steel high-pressure cartridge case
AssigneeLuvata Ohio, Inc.
InventorBrian Swank
Life of this patent
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Abstract
A boron steel high pressure cartridge case and method of manufacturing the same is provided. The method includes cold forming a cartridge case into a drawn blank or a tubular component; 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; tempering the cartridge case; and coating the cartridge case with a zinc nickel plating. The cartridge case is fabricated of boron steel including ≤1.0% boron.
Claims20
A method comprising:
- cold forming a cartridge case into a drawn blank or a tubular component, wherein the cartridge case is fabricated of boron steel;
- 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;
- tempering the cartridge case;
- and
- coating the cartridge case with a corrosion resistant plating,
- wherein after performing the heat treatment and before tempering the cartridge case, the method further comprises:
- oil quenching the cartridge case.
A cartridge case, comprising:
- a cartridge body having a tubular shape with an ejector slot, a shoulder, and a neck;
- wherein the cartridge body is comprised of a boron steel comprising ≤1.0% boron, and the cartridge body is coated with a zinc nickel plating;
- wherein the cartridge case is fabricated by:
- cold forming the cartridge case into a drawn blank or a tubular component;
- 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 the neck of the cartridge case;
- performing a heat treatment of the cartridge case;
- tempering the cartridge case;
- and
- coating the cartridge case with a zine nickel corrosion resistant plating,
- wherein after performing the heat treatment and before tempering the cartridge case, the cartridge case is further fabricated by:
- oil quenching the cartridge case.
Dependencies are inferred from the claim text.