GB1256763A - - Google Patents
Info
- Publication number
- GB1256763A GB1256763A GB1256763DA GB1256763A GB 1256763 A GB1256763 A GB 1256763A GB 1256763D A GB1256763D A GB 1256763DA GB 1256763 A GB1256763 A GB 1256763A
- Authority
- GB
- United Kingdom
- Prior art keywords
- die
- blank
- punch
- sintered
- density
- 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
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S29/00—Metal working
- Y10S29/047—Extruding with other step
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Forging (AREA)
Abstract
1,256,763. Powder metallurgy. SINTERMETALLWERK KREBSOGE G.m.b.H. July 23, 1969 [Aug. 20, 1968], No.36982/69. Heading C7D. A method of coining a sintered metal blank in which the sintered blank is pressed between a punch and a die, the dimensions of the die transverse to the direction of movement of the punch and die being longer than those of the blank, so that on compaction, free flow of the blank occurs transverse to the punch, die movement. The pressing operations may be repeated to form the blank into the required shape which may then be resintered. A powder mixture of 95% Fe, 4% Ni, 1% zinc stearate is compacted and sintered at 1250‹C. to a density of 7À4 g/cc. On repressing in a die allowing outward flow the density is increased to 7À77 g/cc.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1758849A DE1758849B2 (en) | 1968-08-20 | 1968-08-20 | Process for the powder-metallurgical production of molded parts |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1256763A true GB1256763A (en) | 1971-12-15 |
Family
ID=5695254
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1256763D Expired GB1256763A (en) | 1968-08-20 | 1969-07-23 |
Country Status (5)
Country | Link |
---|---|
US (1) | US3785038A (en) |
JP (1) | JPS4815764B1 (en) |
DE (1) | DE1758849B2 (en) |
FR (1) | FR2015955A1 (en) |
GB (1) | GB1256763A (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2219856B2 (en) * | 1972-04-22 | 1974-07-18 | Bayrisches Leichtmetallwerk Graf Bluecher Von Wahlstatt Kg, 8000 Muenchen | Process for the production of sintered forged workpieces forged in one operation |
JPS5146500B2 (en) * | 1973-02-06 | 1976-12-09 | ||
US3874049A (en) * | 1973-04-13 | 1975-04-01 | Burdsall & Ward Co | Method of making a powdered metal part having a bearing surface |
US3866303A (en) * | 1973-06-27 | 1975-02-18 | Bethlehem Steel Corp | Method of making cross-rolled powder metal discs |
US3864808A (en) * | 1973-09-06 | 1975-02-11 | Gen Electric | Method of deforming sintered magnets without significantly reducing magnetic properties |
CA1172015A (en) * | 1980-12-16 | 1984-08-07 | Walter J. Rozmus | Method of forming an article |
US4897117A (en) * | 1986-03-25 | 1990-01-30 | Teledyne Industries, Inc. | Hardened penetrators |
US5293935A (en) * | 1990-10-22 | 1994-03-15 | Halliburton Company | Sintered metal substitute for prepack screen aggregate |
US5088554A (en) * | 1990-10-22 | 1992-02-18 | Otis Engineering Corporation | Sintered metal sand screen |
US5377750A (en) * | 1992-07-29 | 1995-01-03 | Halliburton Company | Sand screen completion |
US5339895A (en) * | 1993-03-22 | 1994-08-23 | Halliburton Company | Sintered spherical plastic bead prepack screen aggregate |
JP3774625B2 (en) * | 2000-10-30 | 2006-05-17 | 株式会社日立製作所 | Method for forging sintered parts |
US10046392B2 (en) | 2015-03-04 | 2018-08-14 | The Boeing Company | Crack-free fabrication of near net shape powder-based metallic parts |
CN113523277B (en) * | 2021-07-15 | 2022-11-18 | 山东宝元硬质合金有限公司 | Forming method for realizing forming through twice pressing |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1809780A (en) * | 1929-02-04 | 1931-06-09 | Ohio Instr Mfg Company | Producing metallic articles |
US2447434A (en) * | 1944-06-06 | 1948-08-17 | American Electro Metal Corp | Method of compacting metal powder into complicated shapes |
US2778064A (en) * | 1951-10-20 | 1957-01-22 | Thompson Prod Inc | Coining method and apparatus |
US3060560A (en) * | 1959-01-12 | 1962-10-30 | Int Harvester Co | Method for cold extruding high density articles from ferrous metal powder |
US3089189A (en) * | 1959-08-07 | 1963-05-14 | Westinghouse Electric Corp | Apparatus and process for forming high density compacts |
LU43270A1 (en) * | 1962-03-01 | 1964-02-28 | ||
US3645728A (en) * | 1970-06-03 | 1972-02-29 | Gen Motors Corp | Method for making spark plug shells |
-
1968
- 1968-08-20 DE DE1758849A patent/DE1758849B2/en active Pending
-
1969
- 1969-07-23 GB GB1256763D patent/GB1256763A/en not_active Expired
- 1969-08-11 FR FR6927795A patent/FR2015955A1/fr not_active Withdrawn
- 1969-08-20 JP JP44065406A patent/JPS4815764B1/ja active Pending
-
1972
- 1972-01-13 US US00217510A patent/US3785038A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS4815764B1 (en) | 1973-05-17 |
DE1758849A1 (en) | 1974-04-04 |
DE1758849B2 (en) | 1974-08-08 |
FR2015955A1 (en) | 1970-04-30 |
US3785038A (en) | 1974-01-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |