GB936129A - Improved ceramic cores for investment casting - Google Patents

Improved ceramic cores for investment casting

Info

Publication number
GB936129A
GB936129A GB2503861A GB2503861A GB936129A GB 936129 A GB936129 A GB 936129A GB 2503861 A GB2503861 A GB 2503861A GB 2503861 A GB2503861 A GB 2503861A GB 936129 A GB936129 A GB 936129A
Authority
GB
United Kingdom
Prior art keywords
core
gms
mesh
silicate
wax
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
GB2503861A
Inventor
Matthew Arnold Hepworth
Thomas Knott Pallister
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.)
Thermal Syndicate Ltd
Original Assignee
Thermal Syndicate Ltd
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 Thermal Syndicate Ltd filed Critical Thermal Syndicate Ltd
Priority to GB2503861A priority Critical patent/GB936129A/en
Publication of GB936129A publication Critical patent/GB936129A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores

Abstract

A ceramic core for a metal or alloy casting mould is formed by vibrating directly into a core channel of a wax pattern of a mould to gel and set in situ, a slurry of graded crushed fused silica e.g. 700 gms. 90 mesh B.S.S. with 300 gms. 200 mesh B.S.S. and 2,5 gms. calcined mangesia, with one or more alkyl silicates e.g. 300 ml of a liquid resulting from the addition of 150 ml of 1% W/W hydrochloric acid to 750 ml polymeric ethyl silicate or isopropyl silicate containing 40-43% silica. After setting at room temperature the wax pattern and core are invested and oven dried to melt the wax when the core may be impregnated with further hydrolysed alkyl silicate prior to fusing. The core may be cast around fused silica rods, fibres or tubes.
GB2503861A 1961-07-11 1961-07-11 Improved ceramic cores for investment casting Expired GB936129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2503861A GB936129A (en) 1961-07-11 1961-07-11 Improved ceramic cores for investment casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2503861A GB936129A (en) 1961-07-11 1961-07-11 Improved ceramic cores for investment casting

Publications (1)

Publication Number Publication Date
GB936129A true GB936129A (en) 1963-09-04

Family

ID=10221213

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2503861A Expired GB936129A (en) 1961-07-11 1961-07-11 Improved ceramic cores for investment casting

Country Status (1)

Country Link
GB (1) GB936129A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4605057A (en) * 1982-08-06 1986-08-12 Hitachi, Ltd. Process for producing core for casting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4605057A (en) * 1982-08-06 1986-08-12 Hitachi, Ltd. Process for producing core for casting

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