GB1240877A - Foundry moulding sand compositions - Google Patents

Foundry moulding sand compositions

Info

Publication number
GB1240877A
GB1240877A GB3592368A GB3592368A GB1240877A GB 1240877 A GB1240877 A GB 1240877A GB 3592368 A GB3592368 A GB 3592368A GB 3592368 A GB3592368 A GB 3592368A GB 1240877 A GB1240877 A GB 1240877A
Authority
GB
United Kingdom
Prior art keywords
weight
sand
metal silicate
materials
alkali metal
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
GB3592368A
Inventor
Clive Starr
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.)
British Non Ferrous Metals Research Association
Original Assignee
British Non Ferrous Metals Research Association
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 British Non Ferrous Metals Research Association filed Critical British Non Ferrous Metals Research Association
Priority to GB3592368A priority Critical patent/GB1240877A/en
Priority to ES369899A priority patent/ES369899A1/en
Priority to AT721469A priority patent/AT310363B/en
Priority to DE19691937964 priority patent/DE1937964A1/en
Priority to FR6925439A priority patent/FR2013803A1/fr
Priority to JP5891569A priority patent/JPS4817572B1/ja
Publication of GB1240877A publication Critical patent/GB1240877A/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
    • B22C1/186—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 contaming ammonium or metal silicates, silica sols
    • B22C1/188—Alkali metal silicates
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

1,240,877. Foundry moulding sand. BRITISH NON-FERROUS METALS RESEARCH ASSOCIATION. 24 July, 1969 [26 July, 1968], No. 35923/68. Heading C3N. A foundry moulding sand composition comprises a particulate refractory material admixed with an aqueous fluid, which fluid comprises, in solution, or in stable suspension or dispersion, an alkali metal silicate, a water-soluble oxidizing agent compatible with the metal silicate, and from 9-40%, by weight, on the weight of the fluid, of a readily oxidizable organic material, which is compatible with the alkali metal silicate and the oxidizing agent. The alkali metal silicate used is preferably sodium silicate and of these that having a SiO 2 : Na 2 O weight ratio of 2À0- 3.3 is advantageously used. The aqueous fluid preferably contains from 50-80% by weight, particularly 60-75%, of the commercial sodium silicate solution, whilst the amount of oxidizing agent is preferably 1-15% by weight. The water-soluble oxidizing agent should be compatible with the alkali metal silicate in the sense that it does not prevent the alkali metal silicate from exercizing its function as a sand binding agent and examples of such oxidizing agents are the nitrates, chromates, dichromates, permanganates and chlorates of alkali metals, particularly of sodium and potassium. Mixtures of such agents may be used. Examples of the readily oxidizable materials are starches, dextrine, celluloses, gums, natural resins, sugars and carbohydrate materials, ligneous materials, synthetic polymers, e.g. polyethylene and polystyrene, and hydrocarbon materials, e.g. coal-tars pitch and wood tars and these materials may be used separately or in admixture. Sucrose is a preferred material and a preferred composition includes sucrose and a mixture of a major proportion of sodium chlorate and a minor proportion of sodium dichromate as the oxidizing agent. The aqueous fluid preferably contains from 6-10% of added water but percentages above or below this range are also envisaged. The term # and is used to cover particulate refractory materials in general, e.g. silica, zircon, chrome, olivine or sillimanite. The aqueous fluid may be added to the sand in a wide range of proportions, e.g. 2-8 parts by weight per 100 parts by weight of sand. Small amounts 0À5-2À0% by weight, of bentonite and soluble dextrine may be added to the sand to improve its green strength.
GB3592368A 1968-07-26 1968-07-26 Foundry moulding sand compositions Expired GB1240877A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB3592368A GB1240877A (en) 1968-07-26 1968-07-26 Foundry moulding sand compositions
ES369899A ES369899A1 (en) 1968-07-26 1969-07-24 Foundry moulding sand compositions
AT721469A AT310363B (en) 1968-07-26 1969-07-25 Binder for molding sand mixtures, molding sand mixture containing such a binding agent and a method for producing a molding sand mixture
DE19691937964 DE1937964A1 (en) 1968-07-26 1969-07-25 Core sand binder
FR6925439A FR2013803A1 (en) 1968-07-26 1969-07-25
JP5891569A JPS4817572B1 (en) 1968-07-26 1969-07-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3592368A GB1240877A (en) 1968-07-26 1968-07-26 Foundry moulding sand compositions

Publications (1)

Publication Number Publication Date
GB1240877A true GB1240877A (en) 1971-07-28

Family

ID=10383046

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3592368A Expired GB1240877A (en) 1968-07-26 1968-07-26 Foundry moulding sand compositions

Country Status (6)

Country Link
JP (1) JPS4817572B1 (en)
AT (1) AT310363B (en)
DE (1) DE1937964A1 (en)
ES (1) ES369899A1 (en)
FR (1) FR2013803A1 (en)
GB (1) GB1240877A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2370537A1 (en) * 1976-11-11 1978-06-09 Foseco Int BINDERS FOR MOLDS AND FOUNDRY CORES BASED ON ALKALINE METAL SILICATES, HYDROSOLUBLE CARBOHYDRATES AND OXYANIONS OF BORON, TIN, GERMANIUM, TELLURE OR ARSENIC
US4398593A (en) * 1980-09-15 1983-08-16 James E. Harrell Heater plate assembly
WO2008046651A1 (en) * 2006-10-19 2008-04-24 Ashland-Südchemie-Kernfest GmbH Moulding material mixture containing carbohydrates
DE102006061876A1 (en) 2006-12-28 2008-07-03 Ashland-Südchemie-Kernfest GmbH Molding material mixture, useful for producing casting molds for metal processing, comprises a fireproof molding base material, a binder based on water glass, a particulate metal oxide, e.g. silicon dioxide and further a carbohydrate
CN103212666A (en) * 2013-04-03 2013-07-24 沈阳汇亚通铸造材料有限责任公司 Slurry-shaped inorganic enhancing agent for casting sodium silicate self-hardening sand and preparation method thereof
CN101600524B (en) * 2006-10-19 2014-03-12 阿什兰德-南方化学-中坚有限公司 Moulding material mixture containing carbohydrates
CN105414464A (en) * 2015-11-23 2016-03-23 合肥李诺新材料贸易有限公司 Composite modified sodium silicate sand for thin, small and high-smoothness pump valve steel castings, and preparation method thereof
CN105414465A (en) * 2015-11-23 2016-03-23 合肥李诺新材料贸易有限公司 High-activity composite modified sodium silicate sand for pump valve castings, and preparation method thereof
CN110267752A (en) * 2017-02-10 2019-09-20 旭有机材株式会社 The manufacturing method of mould material composition and the casting mold using it
CN114472796A (en) * 2022-01-21 2022-05-13 中国第一汽车股份有限公司 Modified inorganic binder sand with collapsibility and preparation method thereof

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE429509B (en) * 1979-09-07 1983-09-12 Ahlsell Ir Ab VIEW TO PREPARE A CASTERY OR FORM OF CORN-SHAPE AND / OR FIBROSE MATERIALS WITH SODIUM SILICATE OR CALCIUM SILICATE AS BINDING AGENT
DE2917208A1 (en) * 1979-04-27 1980-12-04 Alcan Aluminiumwerke CASTING CORE FOR GENERATING HARD ACCESSIBLE CAVES IN CASTING PIECES, AND METHOD FOR THE PRODUCTION THEREOF
JPH036118U (en) * 1989-06-07 1991-01-22
DE4241115A1 (en) * 1992-12-07 1994-06-09 Hoechst Ag End wall made of injection molding material for a wrapping film

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2370537A1 (en) * 1976-11-11 1978-06-09 Foseco Int BINDERS FOR MOLDS AND FOUNDRY CORES BASED ON ALKALINE METAL SILICATES, HYDROSOLUBLE CARBOHYDRATES AND OXYANIONS OF BORON, TIN, GERMANIUM, TELLURE OR ARSENIC
US4398593A (en) * 1980-09-15 1983-08-16 James E. Harrell Heater plate assembly
CN101600524B (en) * 2006-10-19 2014-03-12 阿什兰德-南方化学-中坚有限公司 Moulding material mixture containing carbohydrates
WO2008046651A1 (en) * 2006-10-19 2008-04-24 Ashland-Südchemie-Kernfest GmbH Moulding material mixture containing carbohydrates
DE202007019192U1 (en) 2006-10-19 2011-02-03 Ashland-Südchemie-Kernfest GmbH Carbohydrate-containing molding material mixture
EA015239B1 (en) * 2006-10-19 2011-06-30 Ашланд-Зюдхеми-Кернфест Гмбх Moulding material mixture containing carbohydrates
DE102006061876A1 (en) 2006-12-28 2008-07-03 Ashland-Südchemie-Kernfest GmbH Molding material mixture, useful for producing casting molds for metal processing, comprises a fireproof molding base material, a binder based on water glass, a particulate metal oxide, e.g. silicon dioxide and further a carbohydrate
CN103212666A (en) * 2013-04-03 2013-07-24 沈阳汇亚通铸造材料有限责任公司 Slurry-shaped inorganic enhancing agent for casting sodium silicate self-hardening sand and preparation method thereof
CN105414464A (en) * 2015-11-23 2016-03-23 合肥李诺新材料贸易有限公司 Composite modified sodium silicate sand for thin, small and high-smoothness pump valve steel castings, and preparation method thereof
CN105414465A (en) * 2015-11-23 2016-03-23 合肥李诺新材料贸易有限公司 High-activity composite modified sodium silicate sand for pump valve castings, and preparation method thereof
CN110267752A (en) * 2017-02-10 2019-09-20 旭有机材株式会社 The manufacturing method of mould material composition and the casting mold using it
CN110267752B (en) * 2017-02-10 2022-01-11 旭有机材株式会社 Mold material composition and method for producing mold using same
CN114472796A (en) * 2022-01-21 2022-05-13 中国第一汽车股份有限公司 Modified inorganic binder sand with collapsibility and preparation method thereof

Also Published As

Publication number Publication date
JPS4817572B1 (en) 1973-05-30
FR2013803A1 (en) 1970-04-10
DE1937964A1 (en) 1970-08-06
ES369899A1 (en) 1972-01-01
AT310363B (en) 1973-09-25

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