GB1138404A - Precision casting of high purity metals - Google Patents

Precision casting of high purity metals

Info

Publication number
GB1138404A
GB1138404A GB57742/66A GB5774266A GB1138404A GB 1138404 A GB1138404 A GB 1138404A GB 57742/66 A GB57742/66 A GB 57742/66A GB 5774266 A GB5774266 A GB 5774266A GB 1138404 A GB1138404 A GB 1138404A
Authority
GB
United Kingdom
Prior art keywords
mould
casting
crucible
parts
cavities
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
GB57742/66A
Inventor
Edward Louis Bedell
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.)
Allis Chalmers Corp
Original Assignee
Allis Chalmers 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 Allis Chalmers Corp filed Critical Allis Chalmers Corp
Publication of GB1138404A publication Critical patent/GB1138404A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S266/00—Metallurgical apparatus
    • Y10S266/905—Refractory metal-extracting means

Abstract

1,138,404. Vacuum casting. ALLIS-CHALMERS MFG. CO. 23 Dec., 1966 [6 Jan., 1966], No. 57742/66. Heading B3F. In a method of vacuum casting high purity precision metal parts at least one heated mould 22, 23, is located in a closed vessel 11 evacuated by means 16 and the casting in the mould cavity 25 is cooled in such a way as to produce an upwardly advancing solid-liquid interface which progresses slowly and terminates in the casting in a blind riser portion 30 situated in the uppermost part of the mould cavity 25. In the embodiment described a plurality of mould parts 22, 23, 24 are used in stacked relationship and carried in a yoke member 20, the mould cavities being interconnected by a feed channel 29 and are supplied with molten metal from a crucible 35 located directly above the moulds. The moulds and the crucible are heated by induction coils 46 and 45 respectively, the heating being controlled to produce the desired solidification of the casting. Plug members 41 and 36 respectively are actuable to permit the supply of material from the hopper 40 to the crucible and from the crucible to the mould cavities. The mould and yoke parts are made from spectrographically pure graphite to prevent contamination of the resultant castings. The mould cavities may be provided with recesses 50 for inserts or core portions so as to facilitate the changing of the shape of a particular part of the casting. These inserts may be of metal which may through surface fusion become incorporated in the resultant casting. The construction of the mould is such as to permit the mould parts to be reused.
GB57742/66A 1966-01-06 1966-12-23 Precision casting of high purity metals Expired GB1138404A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US51913366A 1966-01-06 1966-01-06

Publications (1)

Publication Number Publication Date
GB1138404A true GB1138404A (en) 1969-01-01

Family

ID=24066975

Family Applications (1)

Application Number Title Priority Date Filing Date
GB57742/66A Expired GB1138404A (en) 1966-01-06 1966-12-23 Precision casting of high purity metals

Country Status (5)

Country Link
US (1) US3434527A (en)
DE (1) DE1558159B2 (en)
GB (1) GB1138404A (en)
NL (1) NL6700271A (en)
SE (1) SE316872B (en)

Cited By (2)

* 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
GB2160456A (en) * 1984-06-22 1985-12-24 Acervo Sa Casting method

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712364A (en) * 1970-11-25 1973-01-23 A Daniel Method of vacuum casting metal
US3841384A (en) * 1973-02-21 1974-10-15 Howmet Corp Method and apparatus for melting and casing metal
US3895672A (en) * 1973-12-26 1975-07-22 United Aircraft Corp Integrated furnace method and apparatus for the continuous production of individual castings
US4541475A (en) * 1981-12-30 1985-09-17 Rolls-Royce Limited Method of, and apparatus for, producing castings in a vacuum
DE19607805C1 (en) * 1996-03-01 1997-07-17 Ald Vacuum Techn Gmbh Melting and casting metals
ES2183667B1 (en) * 1999-11-19 2004-05-16 Loramendi, S.A. MOTOR MOLDING MACHINE, PERFECTED.
US9511418B2 (en) * 2012-10-01 2016-12-06 United Technologies Corporation Method of casting parts using heat reservoir, gating used by such method, and casting made thereby

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2127239A (en) * 1935-12-11 1938-08-16 Stoody Co Means for producing high melting point alloy castings
US2334701A (en) * 1942-12-21 1943-11-23 Ohio Steel Foundry Co Means for casting metals
US2461099A (en) * 1945-03-30 1949-02-08 Alloy Cast Steel Company Metal-casting mold
US2476296A (en) * 1945-08-08 1949-07-19 Russell G Hardy Metal casting apparatus
US2578407A (en) * 1948-01-10 1951-12-11 Gen Electric Method of making cast alnico magnets
US2716790A (en) * 1951-05-12 1955-09-06 Joseph B Brennan Apparatus for casting metallic articles
AT187633B (en) * 1952-05-29 1956-11-10 Bela Dipl Ing Tisza Process for introducing reactive materials into casting molds
US2903759A (en) * 1954-07-06 1959-09-15 Helen E Brennan Casting of refractory metals
US2842820A (en) * 1955-01-12 1958-07-15 Joseph B Brennan Apparatus for casting metal
US2804664A (en) * 1955-09-06 1957-09-03 Joseph B Brennan Casting apparatus
US2959829A (en) * 1957-09-09 1960-11-15 Joseph B Brennan Casting method and apparatus
BE627229A (en) * 1962-04-02

Cited By (2)

* 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
GB2160456A (en) * 1984-06-22 1985-12-24 Acervo Sa Casting method

Also Published As

Publication number Publication date
SE316872B (en) 1969-11-03
DE1558159A1 (en) 1970-03-19
DE1558159B2 (en) 1971-12-02
NL6700271A (en) 1967-07-07
US3434527A (en) 1969-03-25

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