GB1291022A - A method of making foundry moulds and cores and a moulding sand mixture for making foundry moulds and cores - Google Patents

A method of making foundry moulds and cores and a moulding sand mixture for making foundry moulds and cores

Info

Publication number
GB1291022A
GB1291022A GB9531/71A GB953171A GB1291022A GB 1291022 A GB1291022 A GB 1291022A GB 9531/71 A GB9531/71 A GB 9531/71A GB 953171 A GB953171 A GB 953171A GB 1291022 A GB1291022 A GB 1291022A
Authority
GB
United Kingdom
Prior art keywords
weight
moulding sand
ferrous oxide
amount
cores
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
GB9531/71A
Inventor
Abram Moiseevich Lyass
Sergei Semenovich Zhukovsky
Sergei Dmitrievich Teplyakov
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.)
TSNIITMASH
Original Assignee
TSNIITMASH
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
Priority to DE19712116767 priority Critical patent/DE2116767C3/en
Priority to AT293171A priority patent/AT312831B/en
Priority claimed from DE19712116767 external-priority patent/DE2116767C3/en
Application filed by TSNIITMASH filed Critical TSNIITMASH
Priority to FR7113346A priority patent/FR2133509B1/fr
Priority to GB9531/71A priority patent/GB1291022A/en
Publication of GB1291022A publication Critical patent/GB1291022A/en
Priority to US05/680,923 priority patent/US4093467A/en
Priority claimed from US05/680,923 external-priority patent/US4093467A/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
    • B22C1/18—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 of inorganic agents
    • B22C1/185—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 of inorganic agents containing phosphates, phosphoric acids or its derivatives

Abstract

1291022 Foundry mould composition TSENTRALNY NAUCHNO-ISSLEDOVATELSKY INSTITUT TEKHNOLOGII MASCHINOSTROENIA 15 April 1971 9531/71 Heading C3N A self-hardening foundry mould composition comprises moulding sand, orthophosphoric acid, and ferrous oxide or a material containing not less than 30% by weight ferrous oxide. Iron scale containing 30-70% by weight ferrous oxide may be used as the ferrous oxide-containing material. The ferrous oxide is preferably incorporated in a finely pulverized form, preferably having a specific surface area of 500 to 3000 cm.<SP>2</SP>/gm. Use may also be made of naturally occurring ores such as magnetite, ilmenite, siderite and chrome iron ore provided that they contain not less than 30% by weight of ferrous oxide. The most suitable ferrous oxide content of the mixture is 1À5-6% by weight of the moulding sand. The orthophosphoric acid is preferably used in an amount 2-10% by weight of the moulding sand and its concentration may vary within the range 30-80% by weight. The composition may also include an oxide or hydroxide of a metal, such as calcium, cadmium, zinc or copper, to improve the strength of the moulds formed from the composition preferably in an amount 0À005-0À12% of the weight of the moulding sand or a foaming agent such as sodium alkyl aryl sulphonate, preferably in an amount 0À1-1% by weight of the moulding sand. Alternatively a polyhydric alcohol, such as ethylene glycol, diethylene glycol, propylene glycol or glycerine, may be used instead of the metal oxides and hydroxides referred to above, preferably in an amount 0À5-3% of the weight of the moulding sand.
GB9531/71A 1971-04-05 1971-04-15 A method of making foundry moulds and cores and a moulding sand mixture for making foundry moulds and cores Expired GB1291022A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE19712116767 DE2116767C3 (en) 1971-04-06 Self-hardening molding compound
AT293171A AT312831B (en) 1971-04-06 1971-04-06 Self-curing molding compound
FR7113346A FR2133509B1 (en) 1971-04-06 1971-04-15
GB9531/71A GB1291022A (en) 1971-04-06 1971-04-15 A method of making foundry moulds and cores and a moulding sand mixture for making foundry moulds and cores
US05/680,923 US4093467A (en) 1971-04-05 1976-04-28 Method for making foundry moulds and cores

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19712116767 DE2116767C3 (en) 1971-04-06 Self-hardening molding compound
AT293171A AT312831B (en) 1971-04-06 1971-04-06 Self-curing molding compound
FR7113346A FR2133509B1 (en) 1971-04-06 1971-04-15
GB9531/71A GB1291022A (en) 1971-04-06 1971-04-15 A method of making foundry moulds and cores and a moulding sand mixture for making foundry moulds and cores
US05/680,923 US4093467A (en) 1971-04-05 1976-04-28 Method for making foundry moulds and cores

Publications (1)

Publication Number Publication Date
GB1291022A true GB1291022A (en) 1972-09-27

Family

ID=27506355

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9531/71A Expired GB1291022A (en) 1971-04-05 1971-04-15 A method of making foundry moulds and cores and a moulding sand mixture for making foundry moulds and cores

Country Status (3)

Country Link
AT (1) AT312831B (en)
FR (1) FR2133509B1 (en)
GB (1) GB1291022A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0610343A1 (en) * 1991-10-30 1994-08-17 Ashland Oil, Inc. Inorganic foundry binder systems and their uses
CN104668445A (en) * 2014-11-30 2015-06-03 沈阳工业大学 Alcohol-based hot hard zinc phosphate core binder and preparation method and using method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0610343A1 (en) * 1991-10-30 1994-08-17 Ashland Oil, Inc. Inorganic foundry binder systems and their uses
EP0610343A4 (en) * 1991-10-30 1995-04-19 Ashland Oil Inc Inorganic foundry binder systems and their uses.
CN104668445A (en) * 2014-11-30 2015-06-03 沈阳工业大学 Alcohol-based hot hard zinc phosphate core binder and preparation method and using method thereof

Also Published As

Publication number Publication date
FR2133509A1 (en) 1972-12-01
AT312831B (en) 1974-01-25
FR2133509B1 (en) 1974-10-11
DE2116767A1 (en) 1972-10-19
DE2116767B2 (en) 1974-01-03

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee