EP1964625A3 - Method and apparatus for removing a fugitive pattern from a mold - Google Patents

Method and apparatus for removing a fugitive pattern from a mold Download PDF

Info

Publication number
EP1964625A3
EP1964625A3 EP08151921A EP08151921A EP1964625A3 EP 1964625 A3 EP1964625 A3 EP 1964625A3 EP 08151921 A EP08151921 A EP 08151921A EP 08151921 A EP08151921 A EP 08151921A EP 1964625 A3 EP1964625 A3 EP 1964625A3
Authority
EP
European Patent Office
Prior art keywords
mold
pattern
vapor
surfactant
exterior
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.)
Withdrawn
Application number
EP08151921A
Other languages
German (de)
French (fr)
Other versions
EP1964625A2 (en
Inventor
John A. Redemske
Mark W. Oles
Terence D. Rose
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.)
Metal Casting Technology Inc
Original Assignee
Metal Casting Technology 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 Metal Casting Technology Inc filed Critical Metal Casting Technology Inc
Publication of EP1964625A2 publication Critical patent/EP1964625A2/en
Publication of EP1964625A3 publication Critical patent/EP1964625A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B22C9/043—Removing the consumable pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/12—Treating moulds or cores, e.g. drying, hardening

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

A fugitive pattern, such as wax or other meltable pattern material, residing inside of a refractory mold, which can be unsupported or supported in a particulates bed, is removed by discharging steam or other condensable vapor that may include a surfactant inside the mold to contact and melt the pattern while an exterior of the mold is subjected to a non-condensing gas atmosphere such as air outside of the mold. Regardless of whether the condensable vapor includes surfactant or not, the mold can be tilted relative to gravity and rotated while it is tilted to improve the pattern removal. Condensable vapor is condensed inside the mold where the vapor has contacted the pattern while the exterior of the mold remains free of condenate. The condensed vapor and melted pattern material are drained out of the mold with the surfactant, if present, improving drainage.
EP08151921A 2007-03-01 2008-02-26 Method and apparatus for removing a fugitive pattern from a mold Withdrawn EP1964625A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/712,826 US20070215315A1 (en) 2004-07-26 2007-03-01 Method and apparatus for removing a fugitive pattern from a mold

Publications (2)

Publication Number Publication Date
EP1964625A2 EP1964625A2 (en) 2008-09-03
EP1964625A3 true EP1964625A3 (en) 2009-05-20

Family

ID=39563572

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08151921A Withdrawn EP1964625A3 (en) 2007-03-01 2008-02-26 Method and apparatus for removing a fugitive pattern from a mold

Country Status (8)

Country Link
US (1) US20070215315A1 (en)
EP (1) EP1964625A3 (en)
JP (1) JP2008213044A (en)
KR (1) KR20080080455A (en)
CN (1) CN101362186A (en)
BR (1) BRPI0801201A (en)
CA (1) CA2622106A1 (en)
MX (1) MX2008002992A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7866371B2 (en) * 2007-09-12 2011-01-11 United Technologies Corporation Lost wax investment casting gating fixtures
US7926542B2 (en) * 2008-05-30 2011-04-19 Xi Yang Low stress dewaxing system and method
EP2624983A2 (en) * 2010-10-08 2013-08-14 Buntrock Industries, Inc. Dewax method for investment casting
CN102921935A (en) * 2012-11-29 2013-02-13 吴耀祖 Method for clearing residual casting sand on casting surface
US8931544B2 (en) 2013-03-15 2015-01-13 Metal Casting Technology, Inc. Refractory mold
US8936066B2 (en) * 2013-03-15 2015-01-20 Metal Casting Technology, Inc. Method of using a refractory mold
US8931542B2 (en) * 2013-03-15 2015-01-13 Metal Casting Technology, Inc. Method of making a refractory mold
US11173542B2 (en) 2017-06-28 2021-11-16 General Electric Company Additively manufactured casting core-shell mold and ceramic shell with variable thermal properties
US10391670B2 (en) 2017-06-28 2019-08-27 General Electric Company Additively manufactured integrated casting core structure with ceramic shell
US10391549B2 (en) 2017-06-28 2019-08-27 General Electric Company Additively manufactured casting core-shell hybrid mold and ceramic shell
US10974312B2 (en) 2017-06-28 2021-04-13 General Electric Company Additively manufactured casting core-shell mold with integrated filter and ceramic shell
US11192172B2 (en) 2017-06-28 2021-12-07 General Electric Company Additively manufactured interlocking casting core structure with ceramic shell
CN109277530A (en) * 2018-11-20 2019-01-29 安徽应流航源动力科技有限公司 A kind of production and processing method of 3D printing photosensitive resin model shell
CN109702146B (en) * 2019-03-12 2020-01-10 钢铁研究总院 Dewaxing method and dewaxing device for ceramic shell
CN113561294A (en) * 2020-04-29 2021-10-29 付庆文 Concrete product forming process
CN114226643B (en) * 2021-12-27 2023-05-12 洛阳科品钛业股份有限公司 Dewaxing method for preventing middle-sized shell from expanding during production process of lower cross arm part
CN115846593B (en) * 2022-11-28 2023-10-20 洛阳航辉新材料有限公司 Dewaxing method for precision investment casting

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63264242A (en) * 1987-04-23 1988-11-01 Daido Steel Co Ltd Production of mold for investment casting
WO2006014789A2 (en) * 2004-07-26 2006-02-09 Metal Casting Technology, Incorporated Method of removing a fugitive pattern from a mold

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4940072A (en) * 1989-05-31 1990-07-10 Air Products And Chemicals, Inc. Removing pattern material from investment casting molds
US5069271A (en) 1990-09-06 1991-12-03 Hitchiner Corporation Countergravity casting using particulate supported thin walled investment shell mold
US5296308A (en) * 1992-08-10 1994-03-22 Howmet Corporation Investment casting using core with integral wall thickness control means
US5327955A (en) * 1993-05-04 1994-07-12 The Board Of Trustees Of Western Michigan University Process for combined casting and heat treatment
US5389027A (en) * 1993-11-01 1995-02-14 Kantor; Ellis Collector's model disintegrator pistol (CMDP)
US5465780A (en) * 1993-11-23 1995-11-14 Alliedsignal Inc. Laser machining of ceramic cores
CA2134805A1 (en) * 1993-11-29 1995-05-30 Furgan Z. Shaikh Rapidly making complex castings
AU1150897A (en) * 1995-12-13 1997-07-03 Robert Baum Method for producing hollow article and article produced thereby
US5927379A (en) * 1996-09-26 1999-07-27 Pcc Structurals, Inc. Infiltration method for producing shells useful for investment casting
US5909765A (en) * 1997-10-20 1999-06-08 Johnson & Johnson Professional, Inc. Method of producing investment castings for stereolithography patterns
US6431255B1 (en) * 1998-07-21 2002-08-13 General Electric Company Ceramic shell mold provided with reinforcement, and related processes
US6352101B1 (en) * 1998-07-21 2002-03-05 General Electric Company Reinforced ceramic shell mold and related processes
US6889745B2 (en) * 2002-09-10 2005-05-10 Metal Casting Technology, Incorporated Method of heating casting mold

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63264242A (en) * 1987-04-23 1988-11-01 Daido Steel Co Ltd Production of mold for investment casting
WO2006014789A2 (en) * 2004-07-26 2006-02-09 Metal Casting Technology, Incorporated Method of removing a fugitive pattern from a mold

Also Published As

Publication number Publication date
BRPI0801201A (en) 2008-10-14
JP2008213044A (en) 2008-09-18
CA2622106A1 (en) 2008-09-01
CN101362186A (en) 2009-02-11
KR20080080455A (en) 2008-09-04
US20070215315A1 (en) 2007-09-20
EP1964625A2 (en) 2008-09-03
MX2008002992A (en) 2009-02-25

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