JPS5626655A - Production of improved sand mold for casting - Google Patents

Production of improved sand mold for casting

Info

Publication number
JPS5626655A
JPS5626655A JP10051479A JP10051479A JPS5626655A JP S5626655 A JPS5626655 A JP S5626655A JP 10051479 A JP10051479 A JP 10051479A JP 10051479 A JP10051479 A JP 10051479A JP S5626655 A JPS5626655 A JP S5626655A
Authority
JP
Japan
Prior art keywords
carboxylic
molding
acids
carboxylic groups
magnesium oxide
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.)
Pending
Application number
JP10051479A
Other languages
Japanese (ja)
Inventor
Jirou Nakayasu
Keishiro Iki
Takashi Ogawara
Hideo Takahashi
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.)
Kuraray Co Ltd
Original Assignee
Kuraray Co 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 Kuraray Co Ltd filed Critical Kuraray Co Ltd
Priority to JP10051479A priority Critical patent/JPS5626655A/en
Priority to GB8041109A priority patent/GB2063893B/en
Priority to GB7943129A priority patent/GB2039283B/en
Priority to US06/105,534 priority patent/US4330459A/en
Priority to BR7908408A priority patent/BR7908408A/en
Priority to FR7931338A priority patent/FR2444520A1/en
Priority to DE2951502A priority patent/DE2951502C2/en
Publication of JPS5626655A publication Critical patent/JPS5626655A/en
Priority to US06/286,658 priority patent/US4385656A/en
Pending legal-status Critical Current

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  • Mold Materials And Core Materials (AREA)

Abstract

PURPOSE: To smooth the surface and provide sufficient molding strength down to the inside by mixing carboxylic acids, magnesium oxide and molding sand in water or an aqueous polymer soln. having carboxylic groups and molding the mixture.
CONSTITUTION: Carboxylic acids of one or two or more kinds selected from the group consisting of polycarboxylic acids having two or more carboxylic groups in molecules and oxycarboxylic acids having respectively at least one or more hydroxyl groups and carboxylic groups in molecules, magnesium oxide and molding sand are mixed in an aqueous soln. having carboxylic groups and the mixture is molded, after which the molding is hardened. The carboxylic acids are preferably citric acid, maleic anhydride and malic acid, and the magnesium oxide of 220W 320Å (particularly 240W300Å) in the direction of the [200] direction of crystals by an X-ray diffraction method is used. The polymer having the carboxylic groups is polyacrylic polymer, ethylene-maleic anhydride copolymer, etc.
COPYRIGHT: (C)1981,JPO&Japio
JP10051479A 1978-12-20 1979-08-06 Production of improved sand mold for casting Pending JPS5626655A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP10051479A JPS5626655A (en) 1979-08-06 1979-08-06 Production of improved sand mold for casting
GB8041109A GB2063893B (en) 1978-12-20 1979-12-14 Production of moulds
GB7943129A GB2039283B (en) 1978-12-20 1979-12-14 Production of moulds
US06/105,534 US4330459A (en) 1978-12-20 1979-12-20 Method of manufacturing foundry sand molds
BR7908408A BR7908408A (en) 1978-12-20 1979-12-20 FOUNDRY SAND MOLD MANUFACTURING PROCESS
FR7931338A FR2444520A1 (en) 1978-12-20 1979-12-20 PROCESS FOR PREPARING AGGLOMERANTS FOR FOUNDRY SAND
DE2951502A DE2951502C2 (en) 1978-12-20 1979-12-20 Foundry sand mix
US06/286,658 US4385656A (en) 1978-12-20 1981-07-24 Method of manufacturing foundry sand molds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10051479A JPS5626655A (en) 1979-08-06 1979-08-06 Production of improved sand mold for casting

Publications (1)

Publication Number Publication Date
JPS5626655A true JPS5626655A (en) 1981-03-14

Family

ID=14276050

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10051479A Pending JPS5626655A (en) 1978-12-20 1979-08-06 Production of improved sand mold for casting

Country Status (1)

Country Link
JP (1) JPS5626655A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5368619A (en) * 1976-11-30 1978-06-19 Kuraray Co Preparation of sanddmold for casting
JPS53129121A (en) * 1977-04-13 1978-11-10 White Sea & Baltic Co Component for casting

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5368619A (en) * 1976-11-30 1978-06-19 Kuraray Co Preparation of sanddmold for casting
JPS53129121A (en) * 1977-04-13 1978-11-10 White Sea & Baltic Co Component for casting

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