GB1408266A - Mould forming process - Google Patents

Mould forming process

Info

Publication number
GB1408266A
GB1408266A GB4857571A GB4857571A GB1408266A GB 1408266 A GB1408266 A GB 1408266A GB 4857571 A GB4857571 A GB 4857571A GB 4857571 A GB4857571 A GB 4857571A GB 1408266 A GB1408266 A GB 1408266A
Authority
GB
United Kingdom
Prior art keywords
pattern
binder
refractory
silicates
oct
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
GB4857571A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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
Priority to BE790261D priority Critical patent/BE790261A/en
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB4857571A priority patent/GB1408266A/en
Priority to US296138A priority patent/US3910798A/en
Priority to ZA727254A priority patent/ZA727254B/en
Priority to AU47677/72A priority patent/AU471538B2/en
Priority to IT30639/72A priority patent/IT969672B/en
Priority to FR7236934A priority patent/FR2156798B1/fr
Priority to DE2251050A priority patent/DE2251050A1/en
Priority to JP47104076A priority patent/JPS4849623A/ja
Priority to CA154,562A priority patent/CA974703A/en
Publication of GB1408266A publication Critical patent/GB1408266A/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
    • B22C1/183—Sols, colloids or hydroxide gels
    • 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
    • B22C1/165—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 in the manufacture of multilayered shell moulds

Landscapes

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

Abstract

1408266 Refractory moulds IMPERIAL CHEMICAL INDUSTRIES Ltd 5 Oct 1972 [19 Oct 1971] 48575/71 Heading C1J [Also in Divisions B5 and C3] An investment casting mould is made by coating a pattern with a thixotropic mixture comprising a refractory material, a binder, a liquid dispersant for the binder, and a thickening agent (to impart thixotropicity) which requires a shear stress of at least 1000.dynes/cm.<SP>2</SP> (preferably at least 3000) to break its structure from solid to liquid, the mixture being vibrated for at least some of the time that the pattern is immersed in it. Preferably the vibration is such as to reduce to viscosity in the vicinity of the pattern to 10-25 poises and additionally the pattern is oscillated. A conventional fine-grain primer coating may be applied first followed by a stucco coat and one or more thixotropic coats. Any suitable thickening agent may be used, e.g. fumed silica or treated clays such as beneficiated hydrous magnesium silicate and a small amount of dispersing agent, e.g. diethanolamine may be added. The refractory material is preferably a powder, 50% of which has a particle size below 0À15 mm. Examples given include silicates, clays, oxides and many other refractory materials of the kind used in investment casting. Airdrying binders are preferred, e.g. alkyl silicates, alkali-metal silicates, silica sols. aluminium oxychloride, aluminium phosphate, gypsumsilica mixes and hydraulic cements. The liquid dispersant is preferably a solvent for the binder and may be a polar solvent; examples given include water, mineral acids, alcohols, glycols and glycol ethers.
GB4857571A 1971-10-19 1971-10-19 Mould forming process Expired GB1408266A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
BE790261D BE790261A (en) 1971-10-19 MOLDING PROCESS
GB4857571A GB1408266A (en) 1971-10-19 1971-10-19 Mould forming process
US296138A US3910798A (en) 1971-10-19 1972-10-10 Moulding process
ZA727254A ZA727254B (en) 1971-10-19 1972-10-11 Moulding process
AU47677/72A AU471538B2 (en) 1971-10-19 1972-10-12 Moulding process
IT30639/72A IT969672B (en) 1971-10-19 1972-10-18 FORMING PROCESS
FR7236934A FR2156798B1 (en) 1971-10-19 1972-10-18
DE2251050A DE2251050A1 (en) 1971-10-19 1972-10-18 METHOD AND MIXTURE FOR MAKING AN INCLUSION MOLD
JP47104076A JPS4849623A (en) 1971-10-19 1972-10-19
CA154,562A CA974703A (en) 1971-10-19 1972-10-19 Moulding process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4857571A GB1408266A (en) 1971-10-19 1971-10-19 Mould forming process

Publications (1)

Publication Number Publication Date
GB1408266A true GB1408266A (en) 1975-10-01

Family

ID=10449100

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4857571A Expired GB1408266A (en) 1971-10-19 1971-10-19 Mould forming process

Country Status (10)

Country Link
US (1) US3910798A (en)
JP (1) JPS4849623A (en)
AU (1) AU471538B2 (en)
BE (1) BE790261A (en)
CA (1) CA974703A (en)
DE (1) DE2251050A1 (en)
FR (1) FR2156798B1 (en)
GB (1) GB1408266A (en)
IT (1) IT969672B (en)
ZA (1) ZA727254B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6755237B2 (en) 2000-03-17 2004-06-29 Daniel James Duffey Investment casting
CN106238670A (en) * 2016-09-19 2016-12-21 韩昊喆 Foundry facing and preparation method and application

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1035539A (en) * 1975-09-26 1978-08-01 Her Majesty In Right Of Canada As Represented By The Minister Of Energy, Mines And Resources Method of forming foundry moulds
US4041000A (en) * 1975-12-12 1977-08-09 Alexander Farcnik Making fireproof non-polluting liquid coating composition
US4196011A (en) * 1976-07-28 1980-04-01 Hitachi, Ltd. Self-hardening water-soluble mold and process for producing the same
US4093778A (en) * 1976-09-10 1978-06-06 Nalco Chemical Company Ingot mold for producing steel ingots
US4966225A (en) * 1988-06-13 1990-10-30 Howmet Corporation Ceramic shell mold for investment casting and method of making the same
US5858083A (en) * 1994-06-03 1999-01-12 National Gypsum Company Cementitious gypsum-containing binders and compositions and materials made therefrom
US5718759A (en) * 1995-02-07 1998-02-17 National Gypsum Company Cementitious gypsum-containing compositions and materials made therefrom
US6540013B1 (en) * 2001-06-07 2003-04-01 Ondeo Nalco Company Method of increasing the strength and solids level of investment casting shells
CN101626854B (en) 2007-01-29 2012-07-04 赢创德固赛有限责任公司 Fumed metal oxides for investment casting

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR981804A (en) * 1949-02-25 1951-05-30 Ford Thixotropic coating material for foundry molds, its preparation process and molds obtained using this material
US2908952A (en) * 1957-05-22 1959-10-20 Gen Motors Corp Method of forming an investment mold
US3005244A (en) * 1958-06-09 1961-10-24 Howe Sound Co Production of shell molds
US3243397A (en) * 1961-08-18 1966-03-29 Gen Motors Corp Mold and core coating composition from calcined hydrated aluminum silicate, mica, and bentonite
US3241200A (en) * 1963-09-20 1966-03-22 Howe Sound Co Precision mold and method of fabrication
US3421909A (en) * 1963-10-03 1969-01-14 Du Pont Siliceous compositions containing azo aromatic compounds as stabilizers
US3519444A (en) * 1968-04-12 1970-07-07 Quaker Oats Co Static mold release agent

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6755237B2 (en) 2000-03-17 2004-06-29 Daniel James Duffey Investment casting
CN106238670A (en) * 2016-09-19 2016-12-21 韩昊喆 Foundry facing and preparation method and application
CN106238670B (en) * 2016-09-19 2019-01-04 韩昊喆 Foundry facing and preparation method and application

Also Published As

Publication number Publication date
CA974703A (en) 1975-09-23
US3910798A (en) 1975-10-07
ZA727254B (en) 1973-06-27
BE790261A (en) 1973-04-18
IT969672B (en) 1974-04-10
DE2251050A1 (en) 1973-04-26
JPS4849623A (en) 1973-07-13
AU471538B2 (en) 1976-04-29
FR2156798A1 (en) 1973-06-01
FR2156798B1 (en) 1976-08-20
AU4767772A (en) 1974-04-26

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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