GB1325412A - Process of making magnesium oxide cores - Google Patents

Process of making magnesium oxide cores

Info

Publication number
GB1325412A
GB1325412A GB1317872A GB1317872A GB1325412A GB 1325412 A GB1325412 A GB 1325412A GB 1317872 A GB1317872 A GB 1317872A GB 1317872 A GB1317872 A GB 1317872A GB 1325412 A GB1325412 A GB 1325412A
Authority
GB
United Kingdom
Prior art keywords
core
mgo
magnesium oxide
mgcl
casting
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.)
Expired
Application number
GB1317872A
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.)
RTX Corp
Original Assignee
United Aircraft Corp
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 United Aircraft Corp filed Critical United Aircraft Corp
Publication of GB1325412A publication Critical patent/GB1325412A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B22C9/105—Salt cores

Landscapes

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

Abstract

1325412 Foundry cores UNITED AIRCRAFT CORP 21 March 1972 [29 June 1971] 13178/72 Heading B3F [Also in Division C1] A water-soluble MgO core for use in investmeat casting is formed by mixing an aqueous solution of MgCl 2 with MgO powder which is poured into a die and left to harden before firing to oxidize the MgCl 2 to MgO. The core may be coated with zirconia particles having an average size less than 100 Á. After casting, the core is removed with steam or with hot water in an autoclave.
GB1317872A 1971-06-29 1972-03-21 Process of making magnesium oxide cores Expired GB1325412A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15812871A 1971-06-29 1971-06-29

Publications (1)

Publication Number Publication Date
GB1325412A true GB1325412A (en) 1973-08-01

Family

ID=22566794

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1317872A Expired GB1325412A (en) 1971-06-29 1972-03-21 Process of making magnesium oxide cores

Country Status (12)

Country Link
US (1) US3722574A (en)
JP (1) JPS5524982B1 (en)
AU (1) AU464359B2 (en)
BE (1) BE785335A (en)
CA (1) CA972920A (en)
CH (1) CH538434A (en)
DE (1) DE2220060C3 (en)
FR (1) FR2143646B1 (en)
GB (1) GB1325412A (en)
IL (1) IL39070A (en)
IT (1) IT956344B (en)
SE (1) SE399371B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4073662A (en) * 1977-03-09 1978-02-14 General Electric Company Method for removing a magnesia doped alumina core material
DE2900429A1 (en) * 1979-01-08 1980-07-17 Klepsch Kunstgalerie METHOD FOR PRODUCING A DOUBLE-WALLED, HOLLOW ITEM, IN PARTICULAR A CUP-SHAPED ITEM, MADE OF GLASS OR THE LIKE, MOLD FOR IMPLEMENTING THE METHOD, AND IN PARTICULAR ARTICLES PRODUCED THEREOF
US4604140A (en) * 1984-04-26 1986-08-05 Societe Nationale De L'amiante Foundry sands derived from serpentine and foundry molds derived therefrom
US5335717A (en) * 1992-01-30 1994-08-09 Howmet Corporation Oxidation resistant superalloy castings
US6776219B1 (en) 1999-09-20 2004-08-17 Metal Matrix Cast Composites, Inc. Castable refractory investment mold materials and methods of their use in infiltration casting
US7461684B2 (en) 2002-08-20 2008-12-09 The Ex One Company, Llc Casting process and articles for performing same
US20060243421A1 (en) * 2005-04-29 2006-11-02 United States Of America, Represented By Secretary Of The U.S. Army Soluble casting core for metal matrix composite components and method of producing thereof
WO2008094928A1 (en) 2007-01-29 2008-08-07 Evonik Degussa Gmbh Fumed metal oxides for investment casting
DE102007017762B4 (en) * 2007-04-16 2016-12-29 Hermle Maschinenbau Gmbh Method for producing a workpiece with at least one free space
DE102007017754B4 (en) * 2007-04-16 2016-12-29 Hermle Maschinenbau Gmbh Method for producing a workpiece with at least one free space
CN112222363A (en) * 2020-10-20 2021-01-15 淄博建宗复合材料有限公司 Ceramic salt core formed by one-step die-casting through molten liquid and preparation method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1306572A (en) * 1961-11-21 1962-10-13 Mo Och Domsjoe Ab Improvements in the production of foundry cores and molds
GB1115441A (en) * 1965-01-19 1968-05-29 Doulton & Co Ltd Improvements relating to the production of metal and alloy castings
DE1483641C3 (en) * 1965-06-12 1973-10-11 Karl Schmidt Gmbh, 7107 Neckarsulm Water-soluble salt cores
US3643728A (en) * 1970-07-08 1972-02-22 United Aircraft Corp Process of casting nickel base alloys using water-soluble calcia cores

Also Published As

Publication number Publication date
DE2220060C3 (en) 1975-07-31
BE785335A (en) 1972-10-16
CH538434A (en) 1973-06-30
FR2143646A1 (en) 1973-02-09
IL39070A (en) 1976-10-31
FR2143646B1 (en) 1976-06-11
IT956344B (en) 1973-10-10
JPS5524982B1 (en) 1980-07-02
DE2220060A1 (en) 1973-01-18
SE399371B (en) 1978-02-13
DE2220060B2 (en) 1974-12-05
AU4114972A (en) 1973-10-18
AU464359B2 (en) 1975-08-01
CA972920A (en) 1975-08-19
IL39070A0 (en) 1972-05-30
US3722574A (en) 1973-03-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees

Free format text: IN PAT. BUL. 4579; FOR 1325412 READ 1335412

PCNP Patent ceased through non-payment of renewal fee