GB1281798A - A mould assembly for use in casting directionally solidified articles - Google Patents

A mould assembly for use in casting directionally solidified articles

Info

Publication number
GB1281798A
GB1281798A GB26002/71A GB2600271A GB1281798A GB 1281798 A GB1281798 A GB 1281798A GB 26002/71 A GB26002/71 A GB 26002/71A GB 2600271 A GB2600271 A GB 2600271A GB 1281798 A GB1281798 A GB 1281798A
Authority
GB
United Kingdom
Prior art keywords
susceptor
mould
shell mould
chill plate
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
GB26002/71A
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 GB1281798A publication Critical patent/GB1281798A/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
    • 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
    • C30B11/003—Heating or cooling of the melt or the crystallised material
    • 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
    • C30B21/00—Unidirectional solidification of eutectic materials
    • C30B21/02—Unidirectional solidification of eutectic materials by normal casting or gradient freezing

Landscapes

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

Abstract

1281798 Casting apparatus UNITED AIRCRAFT CORP 19 April 1971 [28 April 1970] 26002/71 Heading B3F A casting mould assembly comprises a shell mould 2 a susceptor 16, a chill plate 26 and a sleeve 22 around the susceptor 16, the sleeve 22 being provided with induction coils 24. The susceptor 16 has a cavity (18) shaped to conform with the outer surface of the shell mould and is split vertically to allow insertion of the shell mould 2. A ledge in the susceptor supports the shell mould 2 so that its lower portion 8 does not touch the chill plate 26. As shown in Fig. 1, the shell mould is for casting single crystal turbine blades and comprises a sprue 4, a turbine-blade forming cavity 10, 12, 14 and a single-crystalselecting helical bottom part 8. The mould is preheated, alloy poured and upward solidification from the chill plate effected. In a modification, a columnar crystalline turbine-blade can be formed by omitting the single crystal selecting helix 8 and replacing it with a solidification starting cavity opening on to the chill plate. In order to provide a thermal gradient in the mould the wall thickness of the susceptor may be varied e.g. to induce upward solidification the susceptor is tapered downwardly.
GB26002/71A 1970-04-28 1971-04-19 A mould assembly for use in casting directionally solidified articles Expired GB1281798A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3259470A 1970-04-28 1970-04-28

Publications (1)

Publication Number Publication Date
GB1281798A true GB1281798A (en) 1972-07-12

Family

ID=21865756

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26002/71A Expired GB1281798A (en) 1970-04-28 1971-04-19 A mould assembly for use in casting directionally solidified articles

Country Status (8)

Country Link
BE (1) BE766101A (en)
CA (1) CA918247A (en)
CH (1) CH537765A (en)
DE (1) DE2119019A1 (en)
FR (1) FR2086418B1 (en)
GB (1) GB1281798A (en)
IL (1) IL36489A0 (en)
NL (1) NL7105747A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2378078A1 (en) * 2010-04-14 2011-10-19 General Electric Company Turbine blade with shroud bearing surfaces comprising a single grain structure and corresponding blade forming method
CN113333691A (en) * 2021-05-25 2021-09-03 上海交通大学 Casting mold for large-height-diameter ratio high-temperature alloy ingot casting and application

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4180119A (en) * 1978-09-18 1979-12-25 Howmet Turbine Components Corporation Mold for directionally solidified single crystal castings and method for preparing same
FR2546912B1 (en) * 1983-06-06 1987-07-10 Commissariat Energie Atomique METHOD AND DEVICE FOR PRODUCING A SINGLE CRYSTAL
AT387167B (en) * 1986-08-11 1988-12-12 Vaillant Gmbh METHOD FOR PREHEATING A DIE CASTING MOLD
DE4030540C1 (en) * 1990-09-27 1991-11-28 Erno Raumfahrttechnik Gmbh, 2800 Bremen, De
DE4209227C1 (en) * 1992-03-21 1993-05-06 Access E.V., 5100 Aachen, De Single crystal superalloy components, e.g. turbine blade or artificial hip joint
GB0719873D0 (en) * 2007-10-12 2007-11-21 Rolls Royce Plc Shape correcting components

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3538981A (en) * 1968-08-05 1970-11-10 United Aircraft Corp Apparatus for casting directionally solidified articles

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2378078A1 (en) * 2010-04-14 2011-10-19 General Electric Company Turbine blade with shroud bearing surfaces comprising a single grain structure and corresponding blade forming method
WO2011129997A1 (en) * 2010-04-14 2011-10-20 General Electric Company System and method for reducing grain boundaries in shrouded airfoils
US8641381B2 (en) 2010-04-14 2014-02-04 General Electric Company System and method for reducing grain boundaries in shrouded airfoils
CN113333691A (en) * 2021-05-25 2021-09-03 上海交通大学 Casting mold for large-height-diameter ratio high-temperature alloy ingot casting and application
CN113333691B (en) * 2021-05-25 2023-01-31 上海交通大学 Casting mold for large-height-diameter ratio high-temperature alloy ingot casting and application

Also Published As

Publication number Publication date
CH537765A (en) 1973-06-15
FR2086418B1 (en) 1975-07-04
NL7105747A (en) 1971-11-01
BE766101A (en) 1971-09-16
CA918247A (en) 1973-01-02
FR2086418A1 (en) 1971-12-31
IL36489A0 (en) 1971-06-23
DE2119019A1 (en) 1971-11-11

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Legal Events

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