公开(公告)号：US10676801B2

公开(公告)日：2020-06-09

申请号：US14971233

申请日：2015-12-16

Applicant: GREER STEEL COMPANY

Inventor： Douglas B. Campbell ,  Todd Daenzer

IPC: C21D1/00 ,  C21D9/16 ,  C22C38/58 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C21D8/02 ,  C21D6/00 ,  C23C2/26 ,  C23C2/06 ,  C23C2/02 ,  F42B5/32 ,  F42B33/00

Abstract: The present invention relates generally to steel compositions, methods of manufacturing the compositions and using the compositions to produce rimfire ammunition cartridges. The steel compositions for use in the rimfire cartridges are processed through cold-rolling and annealing steps to create suitable physical properties.

公开(公告)号：US09738947B1

公开(公告)日：2017-08-22

申请号：US14689696

申请日：2015-04-17

Applicant: The United States of America as represented by the Secretary of the Navy

Inventor： Nishkamraj U. Deshpande ,  Eric Scheid ,  James E. Schwabe

IPC: F42B12/22 ,  C21D9/16 ,  C23C8/22 ,  C21D1/06 ,  F42B12/24

CPC classification number: C21D9/16 ,  C21D1/06 ,  C21D2211/008 ,  C23C8/22 ,  F42B12/24 ,  F42B12/76

Abstract: A method of modifying material properties of a fragmentation device, includes providing a fragmentation device with a first surface, a first section, a second section, a second surface spaced apart from the first surface, a third section, and a fourth section disposed between the first, second, and third sections. The method further includes positioning the fragmentation device within a carbon-rich environment, and absorbing carbon from the carbon-rich environment into the first and second surfaces of the fragmentation device. Additionally, the method further includes increasing a content of carbon at the first and second surfaces of 0.06 wt. % carbon to 1.0 wt. % carbon and maintaining an original content of carbon of 0.01 wt. % carbon to 0.05 wt. % carbon at the fourth section of the fragmentation device by controlling penetration of the carbon into the fourth section.

公开(公告)号：US09248531B2

公开(公告)日：2016-02-02

申请号：US14265015

申请日：2014-04-29

Applicant: Vista Outdoor Operations LLC

Inventor： James Eveland

IPC: F42B33/14 ,  C21D8/10 ,  B21K21/04 ,  C21D1/42 ,  B23P15/22 ,  C21D9/16 ,  C21D1/34 ,  C21D1/70 ,  C21D9/12 ,  C21D9/00

CPC classification number: B23P15/22 ,  C21D1/34 ,  C21D1/42 ,  C21D1/70 ,  C21D8/10 ,  C21D9/0006 ,  C21D9/12 ,  C21D9/16 ,  F42B33/14 ,  Y02P10/253

Abstract: A portion of a work-hardened essentially tubular work piece such as a metallic firearm cartridge case is annealed by contact with solid or granular tooling material which has been heated to a temperature approximately that of the appropriate annealing temperature, thereby reducing the possibility of overheating the work piece, and also thereby permitting the annealing of only that portion of the work piece contacted or in close proximity to the point(s) of contact.

Abstract translation: 通过与已经被加热到适当退火温度的温度的固体或颗粒工具材料的接触而将诸如金属火器盒壳体的加工硬化的基本上管状的工件的一部分退火，从而减少过热的可能性 工件，并且还允许只有接触的工件的那部分或接近点的退火。

公开(公告)号：US5048162A

公开(公告)日：1991-09-17

申请号：US612532

申请日：1990-11-13

Applicant: Stanley R. Nelson

Inventor： Stanley R. Nelson

IPC: B21K21/04 ,  C21D6/04 ,  C21D8/10 ,  C21D9/16 ,  F42B5/28

CPC classification number: B21K21/04 ,  C21D6/04 ,  C21D8/105 ,  C21D9/16 ,  F42B5/28

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.

公开(公告)号：US3791881A

公开(公告)日：1974-02-12

申请号：US3791881D

申请日：1972-03-02

Applicant: US NAVY

Inventor： HAYES G

IPC: C21D9/16 ,  C22C38/04 ,  F42B12/22 ,  F42B12/76 ,  C21D1/50 ,  F42B13/18

CPC classification number: F42B12/22 ,  C21D9/16 ,  C22C38/04 ,  F42B12/76

Abstract: Methods for controlling the sizes and shapes of fragments produced by warhead casings are disclosed.

Abstract translation: 公开了用于控制由弹头壳体产生的碎片的尺寸和形状的方法。

公开(公告)号：US2928666A

公开(公告)日：1960-03-15

申请号：US68388357

申请日：1957-09-13

Applicant: JENNINGS MACHINE CORP

Inventor： DISTLER EDWARD C

IPC: C21D9/16

CPC classification number: C21D9/16

公开(公告)号：US2789928A

公开(公告)日：1957-04-23

申请号：US29659552

申请日：1952-07-01

Applicant: SUNBEAM CORP

Inventor： JOHN WALLERIUS

IPC: C21D9/16

CPC classification number: C21D9/16

公开(公告)号：US2337258A

公开(公告)日：1943-12-21

申请号：US47019442

申请日：1942-12-26

Applicant: SMITH CORP A O

Inventor： LIMPEL EUGENE J

IPC: C21D9/16 ,  H05B6/02

CPC classification number: C21D9/16

公开(公告)号：US20220097124A1

公开(公告)日：2022-03-31

申请号：US17484089

申请日：2021-09-24

Applicant: Luvata Ohio Inc.

Inventor： Brian Swank

IPC: B21K21/04 ,  F42B5/295 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C21D8/06 ,  C21D9/16 ,  C21D7/02

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; and tempering the cartridge case. The cartridge case is fabricated of boron steel including ≤1.0% boron.

公开(公告)号：US20200299795A1

公开(公告)日：2020-09-24

申请号：US16895061

申请日：2020-06-08

Applicant: GREER STEEL COMPANY

Inventor： DOUGLAS B. CAMPBELL ,  TODD DAENZER

IPC: C21D9/16 ,  C22C38/58 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C21D8/02 ,  C21D6/00 ,  C23C2/26 ,  C23C2/06 ,  C23C2/02 ,  F42B5/32 ,  F42B33/00

Abstract: The present invention relates generally to steel compositions, methods of manufacturing the compositions and using the compositions to produce rimfire ammunition cartridges. The steel compositions for use in the rimfire cartridges are processed through cold-rolling and annealing steps to create suitable physical properties.