GB1270630A - A method and apparatus for producing unidirectionally solidified castings - Google Patents

A method and apparatus for producing unidirectionally solidified castings

Info

Publication number
GB1270630A
GB1270630A GB47364/70A GB4736470A GB1270630A GB 1270630 A GB1270630 A GB 1270630A GB 47364/70 A GB47364/70 A GB 47364/70A GB 4736470 A GB4736470 A GB 4736470A GB 1270630 A GB1270630 A GB 1270630A
Authority
GB
United Kingdom
Prior art keywords
casting
sprue
feeder
article
mould
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
GB47364/70A
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.)
Raytheon Technologies 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 GB1270630A publication Critical patent/GB1270630A/en
Expired 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
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • B22D27/045—Directionally solidified castings
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
    • C30B11/002—Crucibles or containers for supporting the melt

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

1,270,630. Moulds, casting processes. UNITED AIRCRAFT CORP. 6 Oct., 1970 [30 Oct., 1969], no. 47364/70. Heading B3F. A shell mould has an article-forming cavity 20, 22, 24, a vented water-cooled chill 36 clamped to a flange 38 at the top of the articleforming cavity and a runner 14, 30 which enters the bottom of the article-forming cavity. Four article-forming cavities are spaced around a central pouring/feeder/sprue 10. To cast directionally solidified articles e.g. turbine blades the mould is placed on a powdered Al 2 O 3 base 44 within the susceptor 46 of an induction furnace having vertically spaced separately power-supplied induction coils 48, 49 and the mould is preheated above the melting point of the metal to be cast. Molten metal is poured into the feeder/sprue 10 to fill the cavities and downward solidification is commenced from the chill plate by progressively turning off the induction coils in a downward direction. The alloy in the feeder/sprue 10 is kept molten by resistance heaters 50. When casting single crystal articles a solidification starting portion 34 is provided with a spiral passage 32 to select a single grain. For the casting of columnar grained articles the spiral passage is omitted. The entire casting assembly is contained within a vacuum chamber for vacuum or inert atmosphere casting.
GB47364/70A 1969-10-30 1970-10-06 A method and apparatus for producing unidirectionally solidified castings Expired GB1270630A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87256269A 1969-10-30 1969-10-30

Publications (1)

Publication Number Publication Date
GB1270630A true GB1270630A (en) 1972-04-12

Family

ID=25359844

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47364/70A Expired GB1270630A (en) 1969-10-30 1970-10-06 A method and apparatus for producing unidirectionally solidified castings

Country Status (6)

Country Link
US (1) US3598172A (en)
AU (1) AU2084870A (en)
CA (1) CA930929A (en)
DE (1) DE2053062A1 (en)
FR (1) FR2100590A1 (en)
GB (1) GB1270630A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2349449A (en) * 1999-04-30 2000-11-01 Abb Alstom Power Ch Ag A casting furnace for producing castings which are directionally solidified in monocrystalline and polycrystalline form

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133368A (en) * 1977-08-01 1979-01-09 United Technologies Corporation Single crystal casting mold and method for making same
US4111252A (en) * 1977-08-01 1978-09-05 United Technologies Corporation Method for making molds and mold components for casting single crystal metallic articles
DE2853162C2 (en) * 1978-12-08 1982-05-19 Vasilij Alekseevič Moskva Čumakov Device for the production of cast parts with directed crystallization
US4813470A (en) * 1987-11-05 1989-03-21 Allied-Signal Inc. Casting turbine components with integral airfoils
DE69126990T2 (en) * 1990-11-05 1998-01-29 Comalco Aluminium Ltd., Melbourne, Victoria POURING METAL ITEMS
AU654308B2 (en) * 1990-11-05 1994-11-03 Comalco Aluminium Limited Casting of metal objects
US6457512B1 (en) * 1997-09-19 2002-10-01 Concurrent Technologies Corporation Bottom pouring fully dense long ingots
CN106734907B (en) * 2016-11-25 2018-11-30 中航动力股份有限公司 A kind of directional solidification cylindrulite and single crystal blade casting method
CN107971468A (en) * 2017-12-29 2018-05-01 深圳微纳增材技术有限公司 A kind of crystallizer for being used to refine ingot solidification tissue
CN110465625B (en) * 2019-09-11 2021-01-12 中国科学院金属研究所 Preparation method of ceramic shell for improving physical sand adhesion of high-temperature alloy directional solidification casting
CN111590056B (en) * 2020-05-22 2022-05-10 东方电气集团东方汽轮机有限公司 Casting structure and casting method for directional solidification of high-temperature alloy

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US129699A (en) * 1872-07-23 Improvement in stoppers for steel-ingot molds
FR988645A (en) * 1949-01-10 1951-08-29 Method and means for improving the characteristics of billets
US3376915A (en) * 1964-10-21 1968-04-09 Trw Inc Method for casting high temperature alloys to achieve controlled grain structure and orientation
US3494709A (en) * 1965-05-27 1970-02-10 United Aircraft Corp Single crystal metallic part
US3543284A (en) * 1968-03-20 1970-11-24 United Aircraft Corp Process for casting single crystal shapes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2349449A (en) * 1999-04-30 2000-11-01 Abb Alstom Power Ch Ag A casting furnace for producing castings which are directionally solidified in monocrystalline and polycrystalline form
US6523599B1 (en) 1999-04-30 2003-02-25 Alstom (Switzerland) Ltd Casting furnace with centrally located heating element for producing directionally solidified castings
GB2349449B (en) * 1999-04-30 2003-12-31 Abb Alstom Power Ch Ag Casting furnace for producing castings which are directionally solidified in monocrystalline and polycrystalline form

Also Published As

Publication number Publication date
US3598172A (en) 1971-08-10
AU2084870A (en) 1972-04-13
CA930929A (en) 1973-07-31
FR2100590A1 (en) 1972-03-24
DE2053062A1 (en) 1971-05-06

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