GB1075883A - Improvements in casting mold and method of making - Google Patents

Improvements in casting mold and method of making

Info

Publication number
GB1075883A
GB1075883A GB15705/65A GB1570565A GB1075883A GB 1075883 A GB1075883 A GB 1075883A GB 15705/65 A GB15705/65 A GB 15705/65A GB 1570565 A GB1570565 A GB 1570565A GB 1075883 A GB1075883 A GB 1075883A
Authority
GB
United Kingdom
Prior art keywords
mould
graphite
zirconia
alginate
alumina
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
GB15705/65A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1075883A publication Critical patent/GB1075883A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C3/00Selection of compositions for coating the surfaces of moulds, cores, or patterns
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C23/00Tools; Devices not mentioned before for moulding
    • B22C23/02Devices for coating moulds or cores
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/02Sand moulds or like moulds for shaped castings
    • B22C9/04Use of lost patterns

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

A mould (10), for lining with graphite (see Divisions B3 and C1) for casting titanium &c., is made by the lost wax process from silica powder and silica sand, with sodium silicate, an alginate or ethyl silicate as a binder, or from alumina or zirconia, and cured at 1600-1800 DEG F. for one hour.ALSO:A mould 10 has a porous refractory shell lined with pyrolytic carbon, e.g. produced by heating the mould to between 1300 DEG and 2200 DEG F. and passing through it a hydrocarbon gas such as acetylene or methane. Small amounts of boron may be incorporated with the graphite. The mould 10 is made by the lost wax process from silica powder and silica sand, with sodium silicate, alginate or ethyl silicate as binder, or from alumina or zirconia, and cured at 1600-1800 DEG F. for one hour. A cup-end 14 is sealed to a graphite base plate 12 with an inlet 18 for the hydrocarbon gas. A graphite susceptor 20 inside an induction coil 22 is supported on the plate and closed by a cover 24 with an outlet 26. This whole arrangement is put in a vacuum chamber and the mould is heated by the coil and the gas is introduced at 18 to flow out from vents 30. <PICT:1075883/C1/1>
GB15705/65A 1964-05-06 1965-04-13 Improvements in casting mold and method of making Expired GB1075883A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US365255A US3284862A (en) 1964-05-06 1964-05-06 Pyrolitic graphite coated casting mold and method of making same

Publications (1)

Publication Number Publication Date
GB1075883A true GB1075883A (en) 1967-07-12

Family

ID=23438104

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15705/65A Expired GB1075883A (en) 1964-05-06 1965-04-13 Improvements in casting mold and method of making

Country Status (5)

Country Link
US (1) US3284862A (en)
DE (1) DE1257364B (en)
GB (1) GB1075883A (en)
NL (1) NL147961B (en)
SE (1) SE322602B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2238057A (en) * 1986-01-02 1991-05-22 United Technologies Corp High strength nonburning beta titanium alloy
GB2240942A (en) * 1986-01-02 1991-08-21 United Technologies Corp Melting and casting of beta titanium alloys.

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1132361A (en) * 1966-01-17 1968-10-30 Monsanto Chemicals Casting metals
US3400751A (en) * 1966-05-09 1968-09-10 Sibley Machine And Foundry Cor Method of treating cores
GB1178487A (en) * 1967-03-31 1970-01-21 Nat Res Dev Method of manufacturing a Mould for Casting Metal
US3683996A (en) * 1970-02-26 1972-08-15 Adam Dunlop Method of carbonizing refractory moulds
JPS5117936B1 (en) * 1971-04-01 1976-06-05
GB1477632A (en) * 1973-08-16 1977-06-22 Foseco Int Containers for molten metal
US3978908A (en) * 1975-01-06 1976-09-07 Research Corporation Method of die casting metals
US7030066B1 (en) 2001-11-12 2006-04-18 Charles Piskoti Wetting composition for high temperature metal surfaces, and method of making the same
WO2008094928A1 (en) * 2007-01-29 2008-08-07 Evonik Degussa Gmbh Fumed metal oxides for investment casting

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US338542A (en) * 1886-03-23 Manufacture of hard carbon
CH71367A (en) * 1915-04-13 1915-12-16 August Wegelin Aktiengesellsch Process for obtaining smooth walled metal castings using carbonaceous agents
US1492694A (en) * 1923-03-05 1924-05-06 Earl Holley Double coating for permanent molds
DE641029C (en) * 1933-12-29 1937-01-18 Maurer Ernst Process for coating molds and other permanent molds before casting
US2245651A (en) * 1940-09-11 1941-06-17 Linde Air Prod Co Mold coating
GB673320A (en) * 1949-08-17 1952-06-04 Aluminum Co Of America Improvements in or relating to moulds for casting metals
US2681485A (en) * 1952-09-20 1954-06-22 Electric Steel Foundry Co Centrifugal casting of metal
US2886869A (en) * 1956-08-01 1959-05-19 John M Webb Graphite refractory molds and method of making same
US2862826A (en) * 1956-08-13 1958-12-02 Universal Marion Corp Mold material for casting group ivb metals and method of making same
US3138435A (en) * 1961-06-26 1964-06-23 Gen Electric Deposition apparatus and method for forming a pyrolytic graphite article
FR1318796A (en) * 1962-01-12 1963-02-22 Lorraine Carbone Shaped parts coated with pyrolytic graphite

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2238057A (en) * 1986-01-02 1991-05-22 United Technologies Corp High strength nonburning beta titanium alloy
GB2240942A (en) * 1986-01-02 1991-08-21 United Technologies Corp Melting and casting of beta titanium alloys.
GB2240942B (en) * 1986-01-02 1991-12-11 United Technologies Corp Melting and casting of beta titanium alloys

Also Published As

Publication number Publication date
DE1257364B (en) 1967-12-28
NL6505674A (en) 1965-11-08
SE322602B (en) 1970-04-13
US3284862A (en) 1966-11-15
NL147961B (en) 1975-12-15

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