GB758786A - Moulds for forming hollow articles, e.g. die inserts - Google Patents

Moulds for forming hollow articles, e.g. die inserts

Info

Publication number
GB758786A
GB758786A GB21921/54A GB2192154A GB758786A GB 758786 A GB758786 A GB 758786A GB 21921/54 A GB21921/54 A GB 21921/54A GB 2192154 A GB2192154 A GB 2192154A GB 758786 A GB758786 A GB 758786A
Authority
GB
United Kingdom
Prior art keywords
mould
hollow articles
moulds
articles
walls
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
GB21921/54A
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.)
Utica Drop Forge and Tool Corp
Original Assignee
Utica Drop Forge and Tool Corp
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 Utica Drop Forge and Tool Corp filed Critical Utica Drop Forge and Tool Corp
Publication of GB758786A publication Critical patent/GB758786A/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]

Abstract

758,786. Moulds for hollow articles. UTICA DROP FORGE' & TOOL CORPORATION. July 27, 1954 [Aug. 20, 1953], No. 21921/54. Class 87(2) A mould for making hollow articles such as refractory tubes by hydraulic pressure of powdered materials is made with a pair of flexible walls, e.g. of rubber or rubberlike material. The articles may have intricate contours, e.g. die inserts, and be made from refractory powders such as silicon carbide or mixtures thereof with other refractory powders. Such a mould, Fig. 2, comprises two cylindrical flexible walls 10, 11 connected at their bases by an annular wall 12 and having a flexible annular cap 21; the wall 10 has grooves 17 and lands 18. The comminuted material is filled into the mould space 13 defined by the walls 10, 11 and the cap 21 put in place. Air in the powder is exhausted and the sealed mould dropped into a dead end bore of a die in which there is hydraulic fluid; hydrostatic pressure is then applied, in the directions shown by the arrows A, B, by compressing the fluid. The article is finally stripped from the mould and sintered.
GB21921/54A 1953-08-20 1954-07-27 Moulds for forming hollow articles, e.g. die inserts Expired GB758786A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US758786XA 1953-08-20 1953-08-20

Publications (1)

Publication Number Publication Date
GB758786A true GB758786A (en) 1956-10-10

Family

ID=22128534

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21921/54A Expired GB758786A (en) 1953-08-20 1954-07-27 Moulds for forming hollow articles, e.g. die inserts

Country Status (1)

Country Link
GB (1) GB758786A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1584546B1 (en) * 1964-01-28 1971-01-28 Raymond Lenoble Two-part mold for the production of components
GB2137134A (en) * 1983-02-10 1984-10-03 Laeis Werke Ag Method and apparatus for isostatic moulding of hollow articles having protrusions
GB2202218A (en) * 1987-02-19 1988-09-21 De Beers Ind Diamond Method of making an article from pyrophyllite

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1584546B1 (en) * 1964-01-28 1971-01-28 Raymond Lenoble Two-part mold for the production of components
GB2137134A (en) * 1983-02-10 1984-10-03 Laeis Werke Ag Method and apparatus for isostatic moulding of hollow articles having protrusions
GB2202218A (en) * 1987-02-19 1988-09-21 De Beers Ind Diamond Method of making an article from pyrophyllite
GB2202218B (en) * 1987-02-19 1991-02-06 De Beers Ind Diamond Method of making an article from pyrophyllite

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