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GB1075591A - Improvements in or relating to metal castings production - Google Patents

Improvements in or relating to metal castings production

Info

Publication number
GB1075591A
GB1075591A GB592/65A GB59265A GB1075591A GB 1075591 A GB1075591 A GB 1075591A GB 592/65 A GB592/65 A GB 592/65A GB 59265 A GB59265 A GB 59265A GB 1075591 A GB1075591 A GB 1075591A
Authority
GB
United Kingdom
Prior art keywords
mould
metal
furnace
jan
cast
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
GB592/65A
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.)
Northrop Grumman Space and Mission Systems Corp
Original Assignee
TRW Inc
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 TRW Inc filed Critical TRW Inc
Publication of GB1075591A publication Critical patent/GB1075591A/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
    • 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
    • C30B29/60—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape characterised by shape
    • C30B29/605—Products containing multiple oriented crystallites, e.g. columnar crystallites

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

1,075,591. Casting processes. T.R.W. Inc. Jan. 6, 1965 [Jan. 8, 1964], No. 592/65. Heading B3F. A method of producing a casting with unidirectional columnar grain structure comprises positioning a ceramic shell mould in a furnace, closing off an end of the mould with a block of highly heat-conductive material, heating the mould so that at least a part thereof is above the melting-point of the metal to be cast, pouring, and allowing the metal to solidify while continuing to heat the mould at a controlled rate to control the rate of cooling of the metal therein. The mould 18 is supported on a copper block 17 which may be water-cooled, in a furnace 10. Radiation shields 24, 26, provide areas of differing thermal gradients and a loosely packed bed 28 of ceramic particles, e.g. zirconium silicate, magnesia, allows relatively free expansion of the mould. The mould is preheated to a temperature above the melting- point of the metal being cast. In a modification the mould is mounted on a base plate which is vertically movable so that the mould may be moved out of the heating zone and the apparatus is enclosed in a vacuum chamber. In a further modification the furnace comprises induction heating coils which may be selectively energized.
GB592/65A 1964-01-08 1965-01-06 Improvements in or relating to metal castings production Expired GB1075591A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US336462A US3248764A (en) 1964-01-08 1964-01-08 Method for improving grain structure and soundness in castings

Publications (1)

Publication Number Publication Date
GB1075591A true GB1075591A (en) 1967-07-12

Family

ID=23316194

Family Applications (1)

Application Number Title Priority Date Filing Date
GB592/65A Expired GB1075591A (en) 1964-01-08 1965-01-06 Improvements in or relating to metal castings production

Country Status (3)

Country Link
US (1) US3248764A (en)
DE (1) DE1483656B1 (en)
GB (1) GB1075591A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3381742A (en) * 1967-06-23 1968-05-07 North American Rockwell Metal casting and solidification
US3485291A (en) * 1968-06-07 1969-12-23 United Aircraft Corp Method of casting by directional solidification
US3519063A (en) * 1968-07-18 1970-07-07 United Aircraft Corp Shell mold construction with chill plate having uniform roughness
US3620288A (en) * 1969-06-27 1971-11-16 United Aircraft Corp Directionally solidified castings
US3680625A (en) * 1970-11-12 1972-08-01 Trw Inc Heat reflector
US3915761A (en) * 1971-09-15 1975-10-28 United Technologies Corp Unidirectionally solidified alloy articles
US3942581A (en) * 1974-11-29 1976-03-09 General Electric Company Method and apparatus for casting directionally solidified articles
DE2550858C3 (en) * 1975-11-12 1978-09-28 8000 Muenchen Process for the production and / or heat treatment of metallic moldings
US4580613A (en) * 1982-08-05 1986-04-08 Howmet Turbine Components Corporation Method and mold for casting articles having a predetermined crystalline orientation
US4612969A (en) * 1983-04-27 1986-09-23 Howmet Turbine Components Corporation Method of and apparatus for casting articles with predetermined crystalline orientation
US4813470A (en) * 1987-11-05 1989-03-21 Allied-Signal Inc. Casting turbine components with integral airfoils
EP1076119A1 (en) * 1999-08-11 2001-02-14 ABB Alstom Power (Schweiz) AG Apparatus and method for manufacture a directionally solidified columnar grained article
CA2944483C (en) * 2014-06-25 2019-09-17 Halliburton Energy Services, Inc. Insulation enclosure incorporating rigid insulation materials
US11597005B2 (en) 2018-10-05 2023-03-07 General Electric Company Controlled grain microstructures in cast alloys

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US102019A (en) * 1870-04-19 Improvement in dental apparatus for casting plates for artificial teeth
DE89222C (en) *
US1070500A (en) * 1911-05-04 1913-08-19 David Stuart Mackenzie Dental casting apparatus.
US1199428A (en) * 1915-11-24 1916-09-26 Jacob M Roth Electrically-heated mold.
DE490350C (en) * 1927-09-27 1930-01-29 Erftwerk Akt Ges Process for the production of rolling and pressing bars from non-ferrous metals with a high crystallization rate
DE525514C (en) * 1929-01-25 1931-05-26 Ver Aluminium Werke Akt Ges Process for casting ingots and blocks made of aluminum and its alloys with control of solidification
CH178282A (en) * 1934-09-12 1935-07-15 Bosshardt Ludwig Fritz Dr Phil Process for the production of metal blocks.
US2380616A (en) * 1940-06-20 1945-07-31 Snock Jacob Louis Magnetic system
DE833394C (en) * 1942-01-14 1952-03-06 Wieland Werke Ag Casting mold for continuous casting of metals
US2548897A (en) * 1947-04-07 1951-04-17 William J Kroll Process for melting hafnium, zirconium, and titanium metals
GB652022A (en) * 1948-11-18 1951-04-11 Swift Levick & Sons Ltd Improvements in or relating to the manufacture of permanent magnets
US2718041A (en) * 1954-03-04 1955-09-20 Int Harvester Co Frangible expendable mold and pouring opening protective device
US2778077A (en) * 1955-10-20 1957-01-22 Ind Dev Bank Shot compacting in the shell molding process
US2961751A (en) * 1958-01-13 1960-11-29 Misco P C Inc Ceramic metal casting process
DE1197722B (en) * 1959-01-02 1965-07-29 Intermetall Device for the production of pn junctions in a semiconductor arrangement
US3153824A (en) * 1961-12-29 1964-10-27 Martin Metals Corp Method of casting metals

Also Published As

Publication number Publication date
DE1483656B1 (en) 1970-07-30
US3248764A (en) 1966-05-03

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