BRPI0801201A - Method and apparatus for removing a temporary pattern from within a refractory mold - Google Patents

Method and apparatus for removing a temporary pattern from within a refractory mold

Info

Publication number
BRPI0801201A
BRPI0801201A BRPI0801201-6A BRPI0801201A BRPI0801201A BR PI0801201 A BRPI0801201 A BR PI0801201A BR PI0801201 A BRPI0801201 A BR PI0801201A BR PI0801201 A BRPI0801201 A BR PI0801201A
Authority
BR
Brazil
Prior art keywords
mold
pattern
surfactant
vapor
outside
Prior art date
Application number
BRPI0801201-6A
Other languages
Portuguese (pt)
Inventor
John A Redemske
Mark W Oles
Terence D Rose
Original Assignee
Metal Casting Tech
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 Tech filed Critical Metal Casting Tech
Publication of BRPI0801201A publication Critical patent/BRPI0801201A/en

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

MéTODO E APARELHO PARA REMOVER UM PADRãO TEMPORáRIO DE DENTRO DE UM MOLDE REFRATáRIO. é descrito um padrão temporário, tal como um material de padrão de cera ou outro material fundível, que reside dentro de um molde refratário, que pode ser suportado ou não suportado em um leito de particulados, que é removido por descarga de vapor d'água ou outro vapor condensável que pode incluir um agente tensoativo no molde para fazer contato com o padrão e fundi-lo enquanto o exterior do molde é submetido a uma atmosfera de gás de não condensação, tal como ar fora do molde. Independente se o vapor condensável inclui ou não agente tensoativo, o molde pode ser basculado em relação à gravidade e rotacionado enquanto é basculado de maneira a melhorar a remoção do padrão. Vapor condensável é condensado dentro do molde onde o vapor fez contato com o padrão enquanto o exterior do molde permanece livre de condensados. O vapor condensado e o material padrão fundido são drenados para fora do molde com o agente tensoativo, se presente, melhorando a drenagem.METHOD AND APPARATUS FOR REMOVING A TEMPORARY PATTERN WITHIN A REFRACTORY TEMPLATE. A temporary pattern, such as a wax pattern material or other fusible material, residing within a refractory mold, which may or may not be supported in a particulate bed, which is removed by discharge of water vapor, is described. or other condensable vapor which may include a surfactant in the mold to make contact with the pattern and to melt it while the outside of the mold is subjected to a non-condensing gas atmosphere such as air outside the mold. Regardless of whether the condensable vapor includes surfactant or not, the mold can be tilted for gravity and rotated while tilting to improve pattern removal. Condensable steam is condensed within the mold where steam has made contact with the pattern while the outside of the mold remains free of condensate. Condensed vapor and molten standard material are drained out of the mold with surfactant, if present, improving drainage.

BRPI0801201-6A 2007-03-01 2008-02-29 Method and apparatus for removing a temporary pattern from within a refractory mold BRPI0801201A (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 (1)

Publication Number Publication Date
BRPI0801201A true BRPI0801201A (en) 2008-10-14

Family

ID=39563572

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0801201-6A BRPI0801201A (en) 2007-03-01 2008-02-29 Method and apparatus for removing a temporary pattern from within a refractory 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
WO2012048321A2 (en) * 2010-10-08 2012-04-12 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
US8931542B2 (en) * 2013-03-15 2015-01-13 Metal Casting Technology, Inc. Method of making a refractory mold
US8936066B2 (en) 2013-03-15 2015-01-20 Metal Casting Technology, Inc. Method of using a refractory mold
US8931544B2 (en) 2013-03-15 2015-01-13 Metal Casting Technology, Inc. Refractory mold
US10391549B2 (en) 2017-06-28 2019-08-27 General Electric Company Additively manufactured casting core-shell hybrid mold and ceramic shell
US11173542B2 (en) 2017-06-28 2021-11-16 General Electric Company Additively manufactured casting core-shell mold and ceramic shell with variable thermal properties
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
US10391670B2 (en) * 2017-06-28 2019-08-27 General Electric Company Additively manufactured integrated 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

Family Cites Families (15)

* 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
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
WO1997021507A1 (en) * 1995-12-13 1997-06-19 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
US6352101B1 (en) * 1998-07-21 2002-03-05 General Electric Company Reinforced ceramic shell mold and related processes
US6431255B1 (en) * 1998-07-21 2002-08-13 General Electric Company Ceramic shell mold provided with reinforcement, and related processes
US6889745B2 (en) * 2002-09-10 2005-05-10 Metal Casting Technology, Incorporated Method of heating casting mold
US7204296B2 (en) * 2004-07-26 2007-04-17 Metal Casting Technology, Incorporated Method of removing a fugitive pattern from a mold

Also Published As

Publication number Publication date
KR20080080455A (en) 2008-09-04
EP1964625A3 (en) 2009-05-20
CA2622106A1 (en) 2008-09-01
JP2008213044A (en) 2008-09-18
US20070215315A1 (en) 2007-09-20
EP1964625A2 (en) 2008-09-03
MX2008002992A (en) 2009-02-25
CN101362186A (en) 2009-02-11

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Legal Events

Date Code Title Description
B03A Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE AS 3A E 4A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: NAO APRESENTADA A GUIA DE CUMPRIMENTO DE EXIGENCIA. REFERENTE AS 3A E 4A ANUIDADES.