CA2049228A1 - Countergravity casting using particulate supported thin walled investment shell mold - Google Patents

Countergravity casting using particulate supported thin walled investment shell mold

Info

Publication number
CA2049228A1
CA2049228A1 CA 2049228 CA2049228A CA2049228A1 CA 2049228 A1 CA2049228 A1 CA 2049228A1 CA 2049228 CA2049228 CA 2049228 CA 2049228 A CA2049228 A CA 2049228A CA 2049228 A1 CA2049228 A1 CA 2049228A1
Authority
CA
Canada
Prior art keywords
shell
thin
pattern
mold
support media
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.)
Granted
Application number
CA 2049228
Other languages
French (fr)
Other versions
CA2049228C (en
Inventor
George D. Chandley
Richard T. Carter
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.)
Hitchiner Manufacturing Co Inc
Original Assignee
Hitchiner Manufacturing Co Inc
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 Hitchiner Manufacturing Co Inc filed Critical Hitchiner Manufacturing Co Inc
Publication of CA2049228A1 publication Critical patent/CA2049228A1/en
Application granted granted Critical
Publication of CA2049228C publication Critical patent/CA2049228C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Casting Devices For Molds (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Dental Prosthetics (AREA)

Abstract

An expendable pattern of an article to be cast comprises a meltable material that expands upon heating (e.g., a wax pattern). The pattern is invested with particulate mold material to form a thin, layered shell having a wall thickness not exceeding about .12 inch. The thin shell wall thickness unexpectedly reduces damage and distortion to the shell during removal of the pattern therefrom by steam autoclaving. After firing, the thin gas permeable shell mold is surrounded by a refractory particulate support media in a vacuum housing. The vacuum housing is then evacuated to evacuate the mold cavity defined by the thin shell and concurrently a pressure is applied to the support media so as to compress the support media about the thin shell to support the shell against casting stresses when molten metal is countergravity cast into the evacuated mold cavity.
CA 2049228 1990-09-06 1991-08-15 Countergravity casting using particulate supported thin walled investment shell mold Expired - Lifetime CA2049228C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US57931990A 1990-09-06 1990-09-06
US579,319 1990-09-06

Publications (2)

Publication Number Publication Date
CA2049228A1 true CA2049228A1 (en) 1992-03-07
CA2049228C CA2049228C (en) 1996-10-15

Family

ID=24316424

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2049228 Expired - Lifetime CA2049228C (en) 1990-09-06 1991-08-15 Countergravity casting using particulate supported thin walled investment shell mold

Country Status (10)

Country Link
EP (1) EP0474078B1 (en)
JP (1) JPH07110404B2 (en)
CN (1) CN1047547C (en)
AU (1) AU635858B2 (en)
BR (1) BR9103830A (en)
CA (1) CA2049228C (en)
DE (1) DE69114954T2 (en)
MX (1) MX173895B (en)
RU (1) RU2039629C1 (en)
YU (1) YU47814B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109465399A (en) * 2018-12-26 2019-03-15 广东富华铸锻有限公司 A kind of reducing gearbox sand core structure and running gate system
CN114309474A (en) * 2022-03-14 2022-04-12 成都航宇超合金技术有限公司 Investment casting process of small and medium-sized single crystal turbine blades

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5303762A (en) * 1992-07-17 1994-04-19 Hitchiner Manufacturing Co., Inc. Countergravity casting apparatus and method
JPH0818122B2 (en) * 1993-02-02 1996-02-28 第一鋳造株式会社 Vacuum shell mold casting method
DE69424835T2 (en) * 1993-03-12 2001-02-15 Hitachi Metals, Ltd. CASTING DEVICE WITH VACUUM EXTRACTION
GB9724568D0 (en) * 1997-11-19 1998-01-21 Castings Dev Centre The Investment casting
US8312913B2 (en) 2005-02-22 2012-11-20 Milwaukee School Of Engineering Casting process
RU2353469C2 (en) * 2007-05-02 2009-04-27 Владимир Иванович Малышев Method of cast receiving and facility for its implementation
RU2361696C2 (en) * 2007-05-14 2009-07-20 Владимир Иванович Малышев Method of casting receiving and device for its implementation
RU2402405C2 (en) * 2008-02-11 2010-10-27 Владимир Иванович Малышев Electromagnetic form-investment-pattern casting
CN101386066B (en) * 2008-10-27 2010-06-09 秦中林 Method for casting the iron and steel casting on extrusion machine
RU2404879C2 (en) * 2009-02-09 2010-11-27 Владимир Иванович Малышев Method of casting and device to this end
CN101850401A (en) * 2010-05-31 2010-10-06 上虞新达精密铸造有限公司 Fired mold and precision casting process utilizing same
CN102806314A (en) * 2012-09-03 2012-12-05 贵州安吉航空精密铸造有限责任公司 Casting method for aluminum alloy thin-wall fine-hole casting
US9498819B2 (en) * 2013-03-14 2016-11-22 Hitchiner Manufacturing Co., Inc. Refractory mold and method of making
US9486852B2 (en) 2013-03-14 2016-11-08 Hitchiner Manufacturing Co., Inc. Radial pattern assembly
US9481029B2 (en) 2013-03-14 2016-11-01 Hitchiner Manufacturing Co., Inc. Method of making a radial pattern assembly
US8931544B2 (en) * 2013-03-15 2015-01-13 Metal Casting Technology, Inc. Refractory mold
KR101367200B1 (en) * 2013-05-08 2014-02-26 지정욱 Process for duplex casting and process for duplex casting apparatus thereof
CN104399891A (en) * 2014-11-27 2015-03-11 温州兰理工科技园有限公司 Casting method combining investment precise shell-making process with vacuum suction molding technology
CN104972066A (en) * 2015-06-15 2015-10-14 江苏万恒铸业有限公司 Thin-shell sand culturing casting simple technology
CN106513635B (en) * 2016-12-16 2019-02-05 上海华培动力科技股份有限公司 Double-layer hollow cylinder fusible pattern formwork structure for high-temperature alloy process for suction casting
CN109719277A (en) * 2017-10-30 2019-05-07 科华控股股份有限公司 The anti-gravity feeding shell structure of heat resisting steel volute process for suction casting
JP6915206B2 (en) * 2019-08-26 2021-08-04 呉政寛 Molten forging method for thin-walled shell molds

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1119223A (en) * 1964-07-09 1968-07-10 Dynamit Nobel Ag Process for the production of precision casting moulds
US3900064A (en) * 1972-12-04 1975-08-19 Hitchiner Manufacturing Co Metal casting
IT1121553B (en) * 1979-06-01 1986-04-02 Cattaneo Leopoldo ELASTIC BANDS AND / OR SCRAPER FOR THERMAL ENGINES AND / OR FOR SEALS OF ANY KIND, WITH PERIPHERAL RIGIDITY AND DEFORMATION IN HOT OPERATION CONTROLLED THROUGH CARVINGS, HOLES, LIGHTENINGS AND CRACKS PRACTICED ON THE SURFACES OF THE LEVEL OF THE LEVEL OF THE FLEE LEAD OF THE PASTA LEAD. FOR THEIR PRODUCTION
US4340108A (en) * 1979-09-12 1982-07-20 Hitchiner Manufacturing Co., Inc. Method of casting metal in sand mold using reduced pressure
US4589466A (en) * 1984-02-27 1986-05-20 Hitchiner Manufacturing Co., Inc. Metal casting
IN170880B (en) * 1987-05-07 1992-06-06 Metal Casting Tech
US4791977A (en) * 1987-05-07 1988-12-20 Metal Casting Technology, Inc. Countergravity metal casting apparatus and process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109465399A (en) * 2018-12-26 2019-03-15 广东富华铸锻有限公司 A kind of reducing gearbox sand core structure and running gate system
CN109465399B (en) * 2018-12-26 2023-11-21 广东富华铸锻有限公司 Gating system with speed reducer shell sand core structure
CN114309474A (en) * 2022-03-14 2022-04-12 成都航宇超合金技术有限公司 Investment casting process of small and medium-sized single crystal turbine blades

Also Published As

Publication number Publication date
DE69114954T2 (en) 1996-07-18
CN1059485A (en) 1992-03-18
DE69114954D1 (en) 1996-01-11
EP0474078B1 (en) 1995-11-29
AU8249591A (en) 1992-03-12
BR9103830A (en) 1992-05-19
JPH04270024A (en) 1992-09-25
YU47814B (en) 1996-01-09
YU149191A (en) 1994-06-24
EP0474078A1 (en) 1992-03-11
CA2049228C (en) 1996-10-15
AU635858B2 (en) 1993-04-01
CN1047547C (en) 1999-12-22
MX173895B (en) 1994-04-07
JPH07110404B2 (en) 1995-11-29
RU2039629C1 (en) 1995-07-20

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