GB1260583A - Method of and apparatus for making articles from powder metal - Google Patents

Method of and apparatus for making articles from powder metal

Info

Publication number
GB1260583A
GB1260583A GB128469A GB128469A GB1260583A GB 1260583 A GB1260583 A GB 1260583A GB 128469 A GB128469 A GB 128469A GB 128469 A GB128469 A GB 128469A GB 1260583 A GB1260583 A GB 1260583A
Authority
GB
United Kingdom
Prior art keywords
mould
mandrel
closure member
powder
cover plate
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
GB128469A
Inventor
Gordon Thomas Brown
Roland George Ronald Sellors
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GKN Group Services Ltd
Original Assignee
GKN Group Services Ltd
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 by GKN Group Services Ltd filed Critical GKN Group Services Ltd
Priority to GB128469A priority Critical patent/GB1260583A/en
Publication of GB1260583A publication Critical patent/GB1260583A/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
    • B22F3/02—Compacting only
    • B22F3/04—Compacting only by applying fluid pressure, e.g. by cold isostatic pressing [CIP]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/001—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a flexible element, e.g. diaphragm, urged by fluid pressure; Isostatic presses

Abstract

1,260,583. Isostatic pressing. G.K.N. GROUP SERVICES Ltd. 8 Jan., 1970 [9 Jan., 1969], No. 1284/69. Heading B5A. [Also in Division C7] Metal powder is isostatically compressed in a flexible mould containing a mandrel, at least part of which is slidable relative to the mould in the direction of the longitudinal axis of the mandrel. The apparatus shown comprises a flexible mould 10 made of natural or synthetic rubber or synthetic plastics closed at one end by a closure member 12 with a peripheral groove 13 in which a rib 14 on the mould engages. A metal end cap 15 and rubber buffer 16 are provided at the closed end of the mould and an annular rubber buffer 17 adjacent the closure member 12. A cover plate 19 is provided for sealing the mould and passages 18 are provided for filling the mould with powder. Mandrel 23 is slidably mounted in cylindrical recess 22 in the closure member 12 and a second part of the mandrel 25 is slidably mounted in the first part 23. Bolts 27, 29 prevent the ports of the mandrel becoming disengaged from each other and from the closure member and coil springs 24 and 31 bias the mandrels to the positions shown. In operation metal powder of -100 mesh (B.S.I.) is fed into the mould cavity through passage 18 and is vibrated to ensure even filling of the mould. Cover plate 19 is bolted in position and the mould assembly is immersed in liquid which is then subjected to a pressure of 25,000 p.s.i. The mould is squeezed inwards compressing the powder and sliding of powder relative to the mandrel is minimized by telescoping of the mandrel. The pressure is then released and the green compact is extracted from the mould by removing the cover plate 19 and end closure member 12. The green compact may then be subjected to a suitable pressure and temperature to forge and sinter it.
GB128469A 1969-01-09 1969-01-09 Method of and apparatus for making articles from powder metal Expired GB1260583A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB128469A GB1260583A (en) 1969-01-09 1969-01-09 Method of and apparatus for making articles from powder metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB128469A GB1260583A (en) 1969-01-09 1969-01-09 Method of and apparatus for making articles from powder metal

Publications (1)

Publication Number Publication Date
GB1260583A true GB1260583A (en) 1972-01-19

Family

ID=9719303

Family Applications (1)

Application Number Title Priority Date Filing Date
GB128469A Expired GB1260583A (en) 1969-01-09 1969-01-09 Method of and apparatus for making articles from powder metal

Country Status (1)

Country Link
GB (1) GB1260583A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005045976A1 (en) * 2005-09-27 2007-03-29 Dorst Technologies Gmbh & Co. Kg Pressing device for the isostatic pressing of a body made from a powdered and/or granulate material comprises a stamp for closing a die opening during pressing and consisting of a metallic insert surrounded by an elastic sleeve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005045976A1 (en) * 2005-09-27 2007-03-29 Dorst Technologies Gmbh & Co. Kg Pressing device for the isostatic pressing of a body made from a powdered and/or granulate material comprises a stamp for closing a die opening during pressing and consisting of a metallic insert surrounded by an elastic sleeve

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee