IE892097L - Lost-foam costing of metal - Google Patents

Lost-foam costing of metal

Info

Publication number
IE892097L
IE892097L IE892097A IE209789A IE892097L IE 892097 L IE892097 L IE 892097L IE 892097 A IE892097 A IE 892097A IE 209789 A IE209789 A IE 209789A IE 892097 L IE892097 L IE 892097L
Authority
IE
Ireland
Prior art keywords
pressure
sand
costing
foam
lost
Prior art date
Application number
IE892097A
Other versions
IE63394B1 (en
Inventor
Michel Garat
Original Assignee
Pechiney Aluminium
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
Priority claimed from FR898903706A external-priority patent/FR2644087B2/en
Application filed by Pechiney Aluminium filed Critical Pechiney Aluminium
Publication of IE892097L publication Critical patent/IE892097L/en
Publication of IE63394B1 publication Critical patent/IE63394B1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/09—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure
    • B22D27/13—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure making use of gas pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/04—Use of lost patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/04—Use of lost patterns
    • B22C9/046—Use of patterns which are eliminated by the liquid metal in the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass

Abstract

This process consists in applying the increasing isostatic gas pressure to the mould after it has been filled at a rate of increase such that the said pressure generates, rapidly and temporarily as a result of pressure drop through the sand, an excess pressure of the molten metal relative to the sand at the level of their interface, this excess pressure reaching a value lying between two limits and subsequently increasing as the said pressure increases, and then in maintaining the said pressure at a constant level until the part has completely solidified. This invention finds its application in the production of parts, in particular made from aluminium alloys, having, apart from an improved compactness, a surface which is free of blowholes and carbonaceous inclusions. [EP0386384A1]
IE209789A 1989-03-07 1989-06-28 A process for the lost-foam casting under pressure of metal articles IE63394B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR898903706A FR2644087B2 (en) 1986-11-17 1989-03-07 IMPROVEMENT IN THE LOSS FOAM MOLDING PROCESS OF METAL PARTS

Publications (2)

Publication Number Publication Date
IE892097L true IE892097L (en) 1990-09-07
IE63394B1 IE63394B1 (en) 1995-04-19

Family

ID=9379922

Family Applications (1)

Application Number Title Priority Date Filing Date
IE209789A IE63394B1 (en) 1989-03-07 1989-06-28 A process for the lost-foam casting under pressure of metal articles

Country Status (19)

Country Link
EP (1) EP0386384B1 (en)
JP (1) JPH0626748B2 (en)
KR (1) KR920003686B1 (en)
AR (1) AR241761A1 (en)
AT (1) ATE81044T1 (en)
AU (1) AU600413B2 (en)
BR (1) BR8903257A (en)
CA (1) CA1335689C (en)
DE (1) DE68903103T2 (en)
DK (1) DK320189A (en)
ES (1) ES2034726T3 (en)
FI (1) FI93322C (en)
GR (1) GR3005937T3 (en)
IE (1) IE63394B1 (en)
MX (1) MX172962B (en)
NO (1) NO172968C (en)
PT (1) PT91078B (en)
RU (1) RU1836177C (en)
UA (1) UA13214A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2651453B2 (en) * 1989-09-07 1994-03-25 Pechiney Aluminium IMPROVEMENT IN THE LOST FOAM AND PRESSURE MOLDING PROCESS OF METAL PARTS.
US5301739A (en) * 1992-06-30 1994-04-12 Cook Arnold J Method for casting and densification
US6640877B2 (en) * 1998-05-14 2003-11-04 Howmet Research Corporation Investment casting with improved melt filling
RU2312738C1 (en) * 2006-02-09 2007-12-20 Открытое акционерное общество "Новосибирский завод химконцентратов" Investment casting method at pressure crystallization and apparatus for performing the same
CN103556011B (en) * 2013-11-22 2015-10-21 山东蒙沃变速器有限公司 A kind of lost foam casting aluminum alloy materials and preparation method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR887120A (en) * 1941-11-19 1943-11-04 Silumin Ges M B H Molding process
US3420291A (en) * 1965-12-29 1969-01-07 Trw Inc Method for reducing metal casting porosity
FR2559407B1 (en) * 1984-02-15 1986-09-05 Pont A Mousson FOUNDRY MOLDING PROCESS AND MOLD FOR PRECISION CASTING UNDER LOW PRESSURE, WITH GASIFIABLE MODEL AND SAND MOLD WITHOUT BINDER
GB2159445B (en) * 1984-06-02 1988-07-06 Cosworth Res & Dev Ltd Casting of metal articles
DE3760303D1 (en) * 1986-04-11 1989-08-17 Alusuisse Process and plant for pressure casting
FR2606688B1 (en) * 1986-11-17 1989-09-08 Pechiney Aluminium LOSS FOAM MOLDING PROCESS FOR METAL PARTS
US4724889A (en) * 1987-04-27 1988-02-16 Ford Motor Company Degating technique for clustered castings made by ECP

Also Published As

Publication number Publication date
PT91078B (en) 1995-07-03
AR241761A1 (en) 1992-12-30
AU3780489A (en) 1989-10-19
NO172968B (en) 1993-06-28
KR920003686B1 (en) 1992-05-09
JPH0626748B2 (en) 1994-04-13
NO892666L (en) 1990-09-10
MX172962B (en) 1994-01-26
UA13214A (en) 1997-02-28
FI93322C (en) 1995-03-27
ATE81044T1 (en) 1992-10-15
PT91078A (en) 1990-11-07
DK320189A (en) 1990-09-08
AU600413B2 (en) 1990-08-09
BR8903257A (en) 1990-09-25
JPH02235546A (en) 1990-09-18
EP0386384A1 (en) 1990-09-12
FI893154A (en) 1990-09-08
GR3005937T3 (en) 1993-06-07
DE68903103T2 (en) 1993-04-15
NO172968C (en) 1993-10-06
FI93322B (en) 1994-12-15
DE68903103D1 (en) 1992-11-05
KR900014059A (en) 1990-10-22
ES2034726T3 (en) 1993-04-01
RU1836177C (en) 1993-08-23
CA1335689C (en) 1995-05-30
FI893154A0 (en) 1989-06-28
DK320189D0 (en) 1989-06-28
NO892666D0 (en) 1989-06-27
EP0386384B1 (en) 1992-09-30
IE63394B1 (en) 1995-04-19

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Legal Events

Date Code Title Description
MK9A Patent expired