GB1280055A - Double-oriented single crystal castings - Google Patents

Double-oriented single crystal castings

Info

Publication number
GB1280055A
GB1280055A GB01326/70A GB1132670A GB1280055A GB 1280055 A GB1280055 A GB 1280055A GB 01326/70 A GB01326/70 A GB 01326/70A GB 1132670 A GB1132670 A GB 1132670A GB 1280055 A GB1280055 A GB 1280055A
Authority
GB
United Kingdom
Prior art keywords
passage
mould
constriction
article
alloy
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
GB01326/70A
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 GB1280055A publication Critical patent/GB1280055A/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
    • C30B11/14—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method characterised by the seed, e.g. its crystallographic orientation
    • 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
    • C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
    • C30B29/10—Inorganic compounds or compositions
    • C30B29/52—Alloys

Abstract

1280055 Crystal growing UNITED AIRCRAFT CORP 10 March 1970 [13 March 1969] 11326/70 Heading B1S [Also in Division B3] Single-crystal doubly-orientated alloy castings are manufactured in an apparatus including a shell mould 10 having an article-forming cavity 12, a constriction 16 at the base of the article-forming cavity and a crystallization starter portion communicating with the constriction 16. The starter portion comprises a vertical passage 20 and a horizontal passage 18, each passage being closed at its lower end by a water-cooled chill plate 24. The lengths of the two passages from their junction to their chill plates differ. The shell mould is surrounded by heaters and backed up by a refractory packing 28 in a flask 26. Before casting the shell mould is heated to above the melting point of alloy and the alloy with at least 100‹F superheat is cast into the mould. Solidification starts at each chill plate, and at the junction of the passages 18 and 20 the columnar dendritic growth from each chill plate meets so that the dendritic growth is oriented in two perpendicular planes. As the vertical axis of the cast body is to be the stress axis of the body the passage 20 is shorter than passage 18 and the vertical orientation of the dendritic growth is stronger than its horizontal orientation. If the body requires a horizontal stress axis then the passage 18 is made shorter than passage 20 (Fig 2 -not shown). The constriction 16a, 16b, 16c, selects one of the grains from the starter portion as solidification is effected upwardly into the article forming mould portion 10.
GB01326/70A 1969-03-13 1970-03-10 Double-oriented single crystal castings Expired GB1280055A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80687469A 1969-03-13 1969-03-13

Publications (1)

Publication Number Publication Date
GB1280055A true GB1280055A (en) 1972-07-05

Family

ID=25195021

Family Applications (1)

Application Number Title Priority Date Filing Date
GB01326/70A Expired GB1280055A (en) 1969-03-13 1970-03-10 Double-oriented single crystal castings

Country Status (4)

Country Link
US (1) US3572419A (en)
FR (1) FR2041075A1 (en)
GB (1) GB1280055A (en)
SE (1) SE355309B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148761A (en) * 1983-09-26 1985-06-05 Kawachi Aluminium Casting Casting plate-like articles
GB2463304A (en) * 1981-09-25 2010-03-17 Snecma Manufacturing monocrystalline cast blades of cubic structure
US20150231696A1 (en) * 2014-02-18 2015-08-20 General Electric Company Methods for directional solidification casting

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738416A (en) * 1969-03-13 1973-06-12 United Aircraft Corp Method of making double-oriented single crystal castings
US4292010A (en) * 1978-09-16 1981-09-29 Rolls-Royce Limited Cambered blade or vane for a gas turbine engine
US4345950A (en) * 1980-04-21 1982-08-24 General Electric Company Method for making a composite grained cast article
US4714101A (en) * 1981-04-02 1987-12-22 United Technologies Corporation Method and apparatus for epitaxial solidification
US4605452A (en) * 1981-12-14 1986-08-12 United Technologies Corporation Single crystal articles having controlled secondary crystallographic orientation
US4548255A (en) * 1982-03-01 1985-10-22 United Technologies Corporation Mold with starter and selector sections for directional solidification casting
US4550764A (en) * 1983-12-22 1985-11-05 Trw Inc. Apparatus and method for casting single crystal articles
US4813470A (en) * 1987-11-05 1989-03-21 Allied-Signal Inc. Casting turbine components with integral airfoils
US4921405A (en) * 1988-11-10 1990-05-01 Allied-Signal Inc. Dual structure turbine blade
US5061154A (en) * 1989-12-11 1991-10-29 Allied-Signal Inc. Radial turbine rotor with improved saddle life
US7011141B2 (en) * 2003-09-02 2006-03-14 General Electric Company Apparatus and method for producing single crystal metallic objects
US8434543B2 (en) * 2009-07-09 2013-05-07 Honeywell International Inc. Method of making turbine stator airfoils with individual orientations
WO2015041775A1 (en) * 2013-09-17 2015-03-26 United Technologies Corporation Turbine blades and manufacture methods

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2463304A (en) * 1981-09-25 2010-03-17 Snecma Manufacturing monocrystalline cast blades of cubic structure
GB2463304B (en) * 1981-09-25 2010-09-29 Snecma A method for the manufacture of monocrystalline blades
GB2148761A (en) * 1983-09-26 1985-06-05 Kawachi Aluminium Casting Casting plate-like articles
US20150231696A1 (en) * 2014-02-18 2015-08-20 General Electric Company Methods for directional solidification casting

Also Published As

Publication number Publication date
DE2011254A1 (en) 1971-10-28
SE355309B (en) 1973-04-16
US3572419A (en) 1971-03-23
FR2041075A1 (en) 1971-01-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
49R Reference inserted (sect. 9/1949)
PLNP Patent lapsed through nonpayment of renewal fees