MX172962B - METALLIC PIECES MOLDING PROCESS THROUGH LOST SPONGE AND UNDER PRESSURE - Google Patents

METALLIC PIECES MOLDING PROCESS THROUGH LOST SPONGE AND UNDER PRESSURE

Info

Publication number
MX172962B
MX172962B MX016629A MX1662989A MX172962B MX 172962 B MX172962 B MX 172962B MX 016629 A MX016629 A MX 016629A MX 1662989 A MX1662989 A MX 1662989A MX 172962 B MX172962 B MX 172962B
Authority
MX
Mexico
Prior art keywords
model
pressure
sponge
metal
mold
Prior art date
Application number
MX016629A
Other languages
Spanish (es)
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 MX172962B publication Critical patent/MX172962B/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Casting Devices For Molds (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Pens And Brushes (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Powder Metallurgy (AREA)

Abstract

La presente invención se refiere a proceso de vaciado en esponja perdida y bajo presión de piezas metálicas, que comprende las siguientes etapas: establecer un modelo de la pieza que se va a vaciar, formado de una esponja de materia orgánica revestida de una película refractaria; sumergir dicho modelo en un molde formado de arena seca sin elasticidad; llenar el molde con el metal en el estado fundido para calentar el modelo; evacuar los vapores y residuos líquidos emitidos por el modelo; permitir al metal fundido solidificarse para obtener dicha pieza; aplicar en el molde antes que la fracción solidificada de metal rebase el 40 por ciento en peso, una presión isostática de valor máximo comprendida entre 0.5 y 1.5 MPa; el proceso se caracteriza porque la presión aumenta con la velocidad en función de la granulometria de la arena y de la profundidad de la inmersión del modelo generada rápida y temporalmente por la perdida de carga a traves del nviel de su interfase, esta superpresión alcanza un valor comprendido entre los dos límites y decrece posteriormente a medida que la presión aumenta despues para mantener la presión constante hasta que se complete la solidificación.The present invention refers to the process of emptying in lost sponge and under pressure of metal parts, which comprises the following steps: establishing a model of the part to be emptied, formed of a sponge of organic matter covered with a refractory film; immerse said model in a mold formed of dry sand without elasticity; fill the mold with the metal in the molten state to heat the model; evacuate the vapors and liquid residues emitted by the model; allowing the molten metal to solidify to obtain said piece; apply to the mold before the solidified metal fraction exceeds 40 weight percent, a maximum value isostatic pressure between 0.5 and 1.5 MPa; The process is characterized in that the pressure increases with speed depending on the grain size of the sand and the depth of immersion of the model generated quickly and temporarily by the loss of pressure through the level of its interface, this superpressure reaches a value It falls between the two limits and subsequently decreases as the pressure increases thereafter to keep the pressure constant until solidification is complete.

MX016629A 1989-03-07 1989-06-28 METALLIC PIECES MOLDING PROCESS THROUGH LOST SPONGE AND UNDER PRESSURE MX172962B (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 (1)

Publication Number Publication Date
MX172962B true MX172962B (en) 1994-01-26

Family

ID=9379922

Family Applications (1)

Application Number Title Priority Date Filing Date
MX016629A MX172962B (en) 1989-03-07 1989-06-28 METALLIC PIECES MOLDING PROCESS THROUGH LOST SPONGE AND UNDER PRESSURE

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 (6)

* 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
CN109550889B (en) * 2017-09-25 2024-06-28 南京龙宁机床装备有限公司 Main shaft ram lost foam and method for casting main shaft ram by using same

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
AU600413B2 (en) 1990-08-09
BR8903257A (en) 1990-09-25
FI93322C (en) 1995-03-27
NO892666L (en) 1990-09-10
ATE81044T1 (en) 1992-10-15
FI893154A (en) 1990-09-08
ES2034726T3 (en) 1993-04-01
EP0386384B1 (en) 1992-09-30
EP0386384A1 (en) 1990-09-12
JPH02235546A (en) 1990-09-18
AR241761A1 (en) 1992-12-30
PT91078A (en) 1990-11-07
RU1836177C (en) 1993-08-23
DE68903103T2 (en) 1993-04-15
JPH0626748B2 (en) 1994-04-13
KR920003686B1 (en) 1992-05-09
DK320189A (en) 1990-09-08
DK320189D0 (en) 1989-06-28
IE63394B1 (en) 1995-04-19
FI893154A0 (en) 1989-06-28
GR3005937T3 (en) 1993-06-07
DE68903103D1 (en) 1992-11-05
NO892666D0 (en) 1989-06-27
NO172968B (en) 1993-06-28
PT91078B (en) 1995-07-03
AU3780489A (en) 1989-10-19
CA1335689C (en) 1995-05-30
KR900014059A (en) 1990-10-22
IE892097L (en) 1990-09-07
UA13214A (en) 1997-02-28
FI93322B (en) 1994-12-15
NO172968C (en) 1993-10-06

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