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
Application number
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of GB1256763A publication Critical patent/GB1256763A/en
Expired legal-status Critical Current

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.
GB1256763D 1968-08-20 1969-07-23 Expired GB1256763A (en)

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)

* Cited by examiner, † Cited by third party
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
US5088554A (en) * 1990-10-22 1992-02-18 Otis Engineering Corporation Sintered metal sand screen
US5293935A (en) * 1990-10-22 1994-03-15 Halliburton Company Sintered metal substitute for prepack screen aggregate
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
JPS4815764B1 (en) 1973-05-17
US3785038A (en) 1974-01-15
FR2015955A1 (en) 1970-04-30
DE1758849B2 (en) 1974-08-08
DE1758849A1 (en) 1974-04-04

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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