GB1420318A - Method and apparatus for manufaccturing an article from a particulate material - Google Patents

Method and apparatus for manufaccturing an article from a particulate material

Info

Publication number
GB1420318A
GB1420318A GB5096272A GB5096272A GB1420318A GB 1420318 A GB1420318 A GB 1420318A GB 5096272 A GB5096272 A GB 5096272A GB 5096272 A GB5096272 A GB 5096272A GB 1420318 A GB1420318 A GB 1420318A
Authority
GB
United Kingdom
Prior art keywords
powder
die
article
pressing
pressure
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
GB5096272A
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.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
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 Rolls Royce PLC filed Critical Rolls Royce PLC
Priority to GB5096272A priority Critical patent/GB1420318A/en
Publication of GB1420318A publication Critical patent/GB1420318A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/584—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride
    • C04B35/593—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride obtained by pressure sintering
    • 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
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
    • C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
    • C04B35/575—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide obtained by pressure sintering

Abstract

1420318 Compression moulding ROLLSROYCE (1971) Ltd 29 Oct 1973 [4 Nov 1972] 50962/72 Heading B5A A method of making an article from powder comprises loading the powder into a die and applying pressure to make a preform, the pressure being applied initially to that part of the powder which has the greatest dimension in the direction of pressing and then to the remainder of the powder in order of diminishing dimension in the direction of pressing. The free surface of the powder, after loading into the die may be levelled off to form a top face composed of upper and lower platforms 20, 22 interconnected by a sloping portion 24. The powder is pressed by a plunger 16 having a working face matching the upper face of the powder apart from the connecting portion 30 which has a smaller angle of inclination to the horizontal than that of the powder so that as the plunger 16 is lowered pressure is applied in order of diminishing thickness of the powder with the result that a uniform density is obtained (Figs. 3, 4). The die 10 has a vertically movable base 14 which is raised to its upper position to allow the powder to be loaded (Fig. 1) and then lowered to the position shown for pressing of the powder. The preform formed from the powder may be heated to 1850‹ C. and pressed at 300 p.s.i. in a further die to form the article. The material is silicon carbide or silicon nitride which may comprise magnesium oxide. The article may be rotor or stator blades or guide vanes for gas turbine engines.
GB5096272A 1972-11-04 1972-11-04 Method and apparatus for manufaccturing an article from a particulate material Expired GB1420318A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5096272A GB1420318A (en) 1972-11-04 1972-11-04 Method and apparatus for manufaccturing an article from a particulate material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5096272A GB1420318A (en) 1972-11-04 1972-11-04 Method and apparatus for manufaccturing an article from a particulate material

Publications (1)

Publication Number Publication Date
GB1420318A true GB1420318A (en) 1976-01-07

Family

ID=10458114

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5096272A Expired GB1420318A (en) 1972-11-04 1972-11-04 Method and apparatus for manufaccturing an article from a particulate material

Country Status (1)

Country Link
GB (1) GB1420318A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2498131A1 (en) * 1981-01-22 1982-07-23 Lecluse Jean Francois LV auxiliary supply DC=DC converter for battery powered vehicle - uses push=pull power transistor oscillator feeding step down transformer having rectified output to produce LV DC
WO1987002299A1 (en) * 1985-10-16 1987-04-23 Monier Limited Tile manufacture
GB2265566A (en) * 1992-02-08 1993-10-06 Hitachi Powdered Metals Continuous pelletising of dry powder materials
FR2728618A1 (en) * 1994-12-27 1996-06-28 Europ Propulsion SUPERSONIC DISTRIBUTOR OF TURBOMACHINE INPUT STAGE

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2498131A1 (en) * 1981-01-22 1982-07-23 Lecluse Jean Francois LV auxiliary supply DC=DC converter for battery powered vehicle - uses push=pull power transistor oscillator feeding step down transformer having rectified output to produce LV DC
WO1987002299A1 (en) * 1985-10-16 1987-04-23 Monier Limited Tile manufacture
GB2265566A (en) * 1992-02-08 1993-10-06 Hitachi Powdered Metals Continuous pelletising of dry powder materials
US5409662A (en) * 1992-02-08 1995-04-25 Hitachi Powdered Metals Co., Ltd. Method and apparatus for extruding powder material
GB2265566B (en) * 1992-02-08 1995-11-15 Hitachi Powdered Metals Method and apparatus for extruding powder material
FR2728618A1 (en) * 1994-12-27 1996-06-28 Europ Propulsion SUPERSONIC DISTRIBUTOR OF TURBOMACHINE INPUT STAGE
EP0719906A1 (en) * 1994-12-27 1996-07-03 Societe Europeenne De Propulsion First stage supersonic stator vane for turbomachine
US5676522A (en) * 1994-12-27 1997-10-14 Societe Europeenne De Propulsion Supersonic distributor for the inlet stage of a turbomachine

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Legal Events

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