GB1279614A - Improvements in or relating to casting - Google Patents

Improvements in or relating to casting

Info

Publication number
GB1279614A
GB1279614A GB5209068A GB5209068A GB1279614A GB 1279614 A GB1279614 A GB 1279614A GB 5209068 A GB5209068 A GB 5209068A GB 5209068 A GB5209068 A GB 5209068A GB 1279614 A GB1279614 A GB 1279614A
Authority
GB
United Kingdom
Prior art keywords
asphaltenes
aqueous sodium
sodium silicate
moulding sand
moulding
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
GB5209068A
Inventor
Abraham Goudsmit
Alfred Douglas Morgan
Kenneth Ernest Lewis Nicholas
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Priority to GB5209068A priority Critical patent/GB1279614A/en
Priority to DE19691955248 priority patent/DE1955248B2/en
Priority to BE741176D priority patent/BE741176A/xx
Priority to NL6916505A priority patent/NL6916505A/xx
Priority to FR6937699A priority patent/FR2022518A1/fr
Publication of GB1279614A publication Critical patent/GB1279614A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/162—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents use of a gaseous treating agent for hardening the binder
    • 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
    • B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/167—Mixtures of inorganic and organic binding agents

Abstract

1279614 Foundry mould composition containing asphaltenes SHELL INTERNA. TIONALE RESEARCH MAATSCHAPPIJ NV 18 Sept 1969 [4 Nov 1968] 52090/68 Heading C3N A method of preparing a foundry mould or core comprises gassing with CO 2 a formed mixture of a moulding sand, aqueous sodium silicate and asphaltenes. Preferred asphaltenes are precipitated by pentane from a residual fuel oil. The aqueous sodium silicate preferably has a SiO 2 : Na 2 O weight ratio of 1À5 : 1-3À5 : 1, resulting in a specific gravity at 20‹ C. of 1À45- 1-7. The asphaltenes can be partly replaced by granulated bitumen, coal tar pitch pellets or coal dust. The asphaltenes may either be premixed with the moulding sand before mixing with aqueous sodium silicate or pre-mixed with the aqueous sodium silicate before mixing with moulding sand. Comparative examples describe moulding sands bound with aqueous sodium silicate and gassed with CO 2 with no additive or granulated bitumen or coal tar pitch pellets used instead of the asphaltenes.
GB5209068A 1968-11-04 1968-11-04 Improvements in or relating to casting Expired GB1279614A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB5209068A GB1279614A (en) 1968-11-04 1968-11-04 Improvements in or relating to casting
DE19691955248 DE1955248B2 (en) 1968-11-04 1969-11-03 METHOD FOR MANUFACTURING CASTING FORMS AND CORES
BE741176D BE741176A (en) 1968-11-04 1969-11-03
NL6916505A NL6916505A (en) 1968-11-04 1969-11-03
FR6937699A FR2022518A1 (en) 1968-11-04 1969-11-03

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5209068A GB1279614A (en) 1968-11-04 1968-11-04 Improvements in or relating to casting

Publications (1)

Publication Number Publication Date
GB1279614A true GB1279614A (en) 1972-06-28

Family

ID=10462607

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5209068A Expired GB1279614A (en) 1968-11-04 1968-11-04 Improvements in or relating to casting

Country Status (5)

Country Link
BE (1) BE741176A (en)
DE (1) DE1955248B2 (en)
FR (1) FR2022518A1 (en)
GB (1) GB1279614A (en)
NL (1) NL6916505A (en)

Also Published As

Publication number Publication date
DE1955248B2 (en) 1977-02-03
DE1955248A1 (en) 1970-06-11
FR2022518A1 (en) 1970-07-31
BE741176A (en) 1970-05-04
NL6916505A (en) 1970-05-08

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees