GB791795A - A method of cold-forging metals to form hollow articles - Google Patents
A method of cold-forging metals to form hollow articlesInfo
- Publication number
- GB791795A GB791795A GB2130856A GB2130856A GB791795A GB 791795 A GB791795 A GB 791795A GB 2130856 A GB2130856 A GB 2130856A GB 2130856 A GB2130856 A GB 2130856A GB 791795 A GB791795 A GB 791795A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blank
- metal
- section
- die
- punch
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/01—Extruding metal; Impact extrusion starting from material of particular form or shape, e.g. mechanically pre-treated
Abstract
791,795. Forging. LIEBERGELD, M. June 24, 1954, No. 21308/56. Divided out of 18531/54. Class 83 (4). A method, Fig. 3, of making hollow metal articles by coldforging, comprises forcing a punch 14 into a blank 12 located in a die cavity closed at its bottom end, whereby the blank metal is displaced laterally into contact with the cavity wall without downward crushing of the blank metal, and thereafter whilst the punch is still inside the blank the latter is compressed by a shoulder 14a to consolidate the metal. The blank is located centrally in the die by a centring flange 12a and by a base portion 12b both of which initially engage the cavity wall. A countersunk centring hole 3a may also be provided for the punch. An ejector 7 removes the forged article from the die. Other embodiments using various shapes of blank for producing various hollow articles are described. The die cavity may be of circular cross-section, Fig. 5 (not shown), and a blank of square cross-section may be used with its edges engaging the cavity wall to ensure centring; alternatively a circular section blank may be used in a square section die cavity, Fig. 6 (not shown).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2130856A GB791795A (en) | 1954-06-24 | 1954-06-24 | A method of cold-forging metals to form hollow articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2130856A GB791795A (en) | 1954-06-24 | 1954-06-24 | A method of cold-forging metals to form hollow articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB791795A true GB791795A (en) | 1958-03-12 |
Family
ID=10160688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2130856A Expired GB791795A (en) | 1954-06-24 | 1954-06-24 | A method of cold-forging metals to form hollow articles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB791795A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071748A (en) * | 2013-01-18 | 2013-05-01 | 洛阳秦汉冷锻有限公司 | Large-size moving contact precision forging technology and mold |
| CN105880308A (en) * | 2016-05-13 | 2016-08-24 | 河南平高电力设备有限公司 | Two-time extruding die of moving contact and secondary-extruding die thereof |
-
1954
- 1954-06-24 GB GB2130856A patent/GB791795A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071748A (en) * | 2013-01-18 | 2013-05-01 | 洛阳秦汉冷锻有限公司 | Large-size moving contact precision forging technology and mold |
| CN105880308A (en) * | 2016-05-13 | 2016-08-24 | 河南平高电力设备有限公司 | Two-time extruding die of moving contact and secondary-extruding die thereof |
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