JPS5781938A - Manufacture of exothermic self-hardening water-soluble mold - Google Patents

Manufacture of exothermic self-hardening water-soluble mold

Info

Publication number
JPS5781938A
JPS5781938A JP15771180A JP15771180A JPS5781938A JP S5781938 A JPS5781938 A JP S5781938A JP 15771180 A JP15771180 A JP 15771180A JP 15771180 A JP15771180 A JP 15771180A JP S5781938 A JPS5781938 A JP S5781938A
Authority
JP
Japan
Prior art keywords
alumina sand
water
hardening
binder
exothermic self
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.)
Granted
Application number
JP15771180A
Other languages
Japanese (ja)
Other versions
JPS588935B2 (en
Inventor
Akira Muramatsu
Heijiro Kurabe
Toshisada Makiguchi
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.)
KAGAKU GIJIYUTSUCHIYOU KINZOKU ZAIRIYOU GIJUTSU KENKIYUU SHIYOCHIYOU
National Research Institute for Metals
Original Assignee
KAGAKU GIJIYUTSUCHIYOU KINZOKU ZAIRIYOU GIJUTSU KENKIYUU SHIYOCHIYOU
National Research Institute for Metals
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 KAGAKU GIJIYUTSUCHIYOU KINZOKU ZAIRIYOU GIJUTSU KENKIYUU SHIYOCHIYOU, National Research Institute for Metals filed Critical KAGAKU GIJIYUTSUCHIYOU KINZOKU ZAIRIYOU GIJUTSU KENKIYUU SHIYOCHIYOU
Priority to JP55157711A priority Critical patent/JPS588935B2/en
Publication of JPS5781938A publication Critical patent/JPS5781938A/en
Publication of JPS588935B2 publication Critical patent/JPS588935B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To extend usable time of mold material in molding an exothermic self-hardening water-soluble mold made of alumina sand using sodium aluminate and Al powder as binder by cooling the alumina sand with liquid nitrogen.
CONSTITUTION: An exothermic self-hardening water-soluble mold is molded by adding 3W10pts.wt. sodium aluminate having Na2O/Al2O3 molar ratio of 1.5W3.0 and ≥60% water and 0.3W1.0pt.wt. Al powder as binder to 100pts.wt. 65W150 mesh alumina sand of high purity. In this case, liquid nitrogen is mixed with alumina sand to cool it below 0°C. Hardening speed of alumina sand is retarded by sodium aluminate and Al powder used as binder and usable time of the mold material can be extended.
COPYRIGHT: (C)1982,JPO&Japio
JP55157711A 1980-11-11 1980-11-11 Manufacturing method of heat-generating self-hardening water-soluble mold Expired JPS588935B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55157711A JPS588935B2 (en) 1980-11-11 1980-11-11 Manufacturing method of heat-generating self-hardening water-soluble mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55157711A JPS588935B2 (en) 1980-11-11 1980-11-11 Manufacturing method of heat-generating self-hardening water-soluble mold

Publications (2)

Publication Number Publication Date
JPS5781938A true JPS5781938A (en) 1982-05-22
JPS588935B2 JPS588935B2 (en) 1983-02-18

Family

ID=15655695

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55157711A Expired JPS588935B2 (en) 1980-11-11 1980-11-11 Manufacturing method of heat-generating self-hardening water-soluble mold

Country Status (1)

Country Link
JP (1) JPS588935B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997001407A1 (en) * 1995-06-24 1997-01-16 Air Products And Chemicals, Inc. Method for forming a mould for use in casting and mould formed by said method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5261126A (en) * 1975-11-15 1977-05-20 Nat Res Inst Metals Water soluble mold for casting
JPS5570439A (en) * 1978-11-20 1980-05-27 Agency Of Ind Science & Technol Extension method of service life of self-hardening mold sand

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5261126A (en) * 1975-11-15 1977-05-20 Nat Res Inst Metals Water soluble mold for casting
JPS5570439A (en) * 1978-11-20 1980-05-27 Agency Of Ind Science & Technol Extension method of service life of self-hardening mold sand

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997001407A1 (en) * 1995-06-24 1997-01-16 Air Products And Chemicals, Inc. Method for forming a mould for use in casting and mould formed by said method

Also Published As

Publication number Publication date
JPS588935B2 (en) 1983-02-18

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