US2193891A - Method for the production of hollow metallic cases - Google Patents
Method for the production of hollow metallic cases Download PDFInfo
- Publication number
- US2193891A US2193891A US282396A US28239639A US2193891A US 2193891 A US2193891 A US 2193891A US 282396 A US282396 A US 282396A US 28239639 A US28239639 A US 28239639A US 2193891 A US2193891 A US 2193891A
- Authority
- US
- United States
- Prior art keywords
- billet
- production
- hollow metallic
- cases
- metallic cases
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K21/00—Making hollow articles not covered by a single preceding sub-group
- B21K21/04—Shaping thin-walled hollow articles, e.g. cartridges
Definitions
- This invention relates to an improved method for the production of hollowmetallic cases and the like, more particularly ammunition shells or shell cases, produced from a steel billet.
- the invention is particularly applicable to the production of ammunition shell cases by a forging and extrusion process.
- the present invention contemplates local cooling of the billet prior to extrusion whereby to reduce or control the ductility or extrusibility of a selected part or parts of the billet, whereby the surface next to any part of the tools may be rendered less liable to extrude in a direction other than that planned.
- the cooling may be effected immediately prior to the forging operation by, for instance, partial immersion of the billet in water, while preferably shielding or screening the central or other parts of the submerged face, the billet being inverted before introduction into the chamber.
- the apparatus comprises a vessel I having a water inlet connection 2 and an overflow 3.
- a vessel I having a water inlet connection 2 and an overflow 3.
- an iron pad 4 concentric with a dished guide plate 5.
- the billet is rested temporarily on the pad 4.
Description
March 19,1940- J. B. TALBOT-CROSBIE ET AL 2,193,891
METHOD FOR THE PRODUCTION OF HOLLOW METALLIC CASES Filed July 1, 1939 @7; jmgmnmkammu Patented Mar. 19, 1940 1 METHOD FOR THE. PRODUCTION OF HOLLOW METALLIC CASES John Burrell Talbot-Crosbie and. Arthur Penrhyn Stanley Macquisten, Glasgow, Scotland Application July 1, 1939, Serial No. 282,396 In Great Britain July 4, 1938 3 Claims.
This invention relates to an improved method for the production of hollowmetallic cases and the like, more particularly ammunition shells or shell cases, produced from a steel billet.
The invention is particularly applicable to the production of ammunition shell cases by a forging and extrusion process.
porarily closed.
then extruded through the die.
Broadly, the present invention contemplates local cooling of the billet prior to extrusion whereby to reduce or control the ductility or extrusibility of a selected part or parts of the billet, whereby the surface next to any part of the tools may be rendered less liable to extrude in a direction other than that planned.
In the production of ammunition shell cases by a forging and/or extrusion process such as above referred to there is a liability to formation of a fin between the plunger and the wall of the billet-receiving chamber, since, in practice, a certain clearance is generally allowed between these parts. I
We avoid or reduce the tendency to the formation of such a fin by cooling the billet over an outer annular area on the face of the billet which i is subjected to the action of the moving tools,
say the upper face of the billet.
In practice the cooling may be effected immediately prior to the forging operation by, for instance, partial immersion of the billet in water, while preferably shielding or screening the central or other parts of the submerged face, the billet being inverted before introduction into the chamber.
One form of apparatus used for effecting the local cooling is illustrated diagrammatically in the figure of the accompanying drawing.
As shown the apparatus comprises a vessel I having a water inlet connection 2 and an overflow 3. On the base of the vessel l is fixed an iron pad 4 concentric with a dished guide plate 5. To cool an outer annular area, of the billet 6, the billet is rested temporarily on the pad 4.
It is to be understood that the local cooling or reduction of temper of the billet may be effected in other ways.
What is claimed is:
1. In the production of hollow metallic cases from a steel billet by a forging and extrusion process, the step of cooling the billet locally prior to extrusion, for the purpose specified.
2. In the production of hollow metallic cases as set forth in claim 1, the step of cooling the billet over an outer annular area on an end face of the billet,
3. In the production of hollow metallic cases asset forth in claim 1, cooling the billet locally by partial immersion of the billet in water While screening part of the submerged face.
J. B. TALBOT-CROSBIE. A. P. S. MACQUIS'IEN.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2193891X | 1938-07-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2193891A true US2193891A (en) | 1940-03-19 |
Family
ID=10900838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US282396A Expired - Lifetime US2193891A (en) | 1938-07-04 | 1939-07-01 | Method for the production of hollow metallic cases |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2193891A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2583312A (en) * | 1945-11-19 | 1952-01-22 | Wayto Stephen | Power system |
| US2639810A (en) * | 1947-04-10 | 1953-05-26 | Dow Chemical Co | Extrusion of metal billets having a temperature gradient |
| US2658343A (en) * | 1949-05-17 | 1953-11-10 | Donald W Green | Rotary pump and motor hydraulic transmission |
| US2714450A (en) * | 1950-09-30 | 1955-08-02 | Aluminum Co Of America | Method of metal forming and improved apparatus therefor |
| US3146886A (en) * | 1961-11-01 | 1964-09-01 | Albert W Scribner | Metal extrusion die block and ram |
| US5027634A (en) * | 1990-02-28 | 1991-07-02 | Granco-Clark, Inc. | Solutionizing taper quench |
| US20060005595A1 (en) * | 2004-07-08 | 2006-01-12 | Nsk-Warner K.K. | Clutch housing and method for manufacturing the same |
| US20120174406A1 (en) * | 2010-07-14 | 2012-07-12 | Benteler Automobiltechnik Gmbh | Method and production plant for making components for a motor vehicle |
-
1939
- 1939-07-01 US US282396A patent/US2193891A/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2583312A (en) * | 1945-11-19 | 1952-01-22 | Wayto Stephen | Power system |
| US2639810A (en) * | 1947-04-10 | 1953-05-26 | Dow Chemical Co | Extrusion of metal billets having a temperature gradient |
| US2658343A (en) * | 1949-05-17 | 1953-11-10 | Donald W Green | Rotary pump and motor hydraulic transmission |
| US2714450A (en) * | 1950-09-30 | 1955-08-02 | Aluminum Co Of America | Method of metal forming and improved apparatus therefor |
| US3146886A (en) * | 1961-11-01 | 1964-09-01 | Albert W Scribner | Metal extrusion die block and ram |
| US5027634A (en) * | 1990-02-28 | 1991-07-02 | Granco-Clark, Inc. | Solutionizing taper quench |
| US20060005595A1 (en) * | 2004-07-08 | 2006-01-12 | Nsk-Warner K.K. | Clutch housing and method for manufacturing the same |
| US7308813B2 (en) * | 2004-07-08 | 2007-12-18 | Nsk-Warner K.K. | Clutch housing and method for manufacturing the same |
| US20120174406A1 (en) * | 2010-07-14 | 2012-07-12 | Benteler Automobiltechnik Gmbh | Method and production plant for making components for a motor vehicle |
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