JPS5781937A - Manufacture of exothermic self-hardening water-soluble mold - Google Patents

Manufacture of exothermic self-hardening water-soluble mold

Info

Publication number
JPS5781937A
JPS5781937A JP15771080A JP15771080A JPS5781937A JP S5781937 A JPS5781937 A JP S5781937A JP 15771080 A JP15771080 A JP 15771080A JP 15771080 A JP15771080 A JP 15771080A JP S5781937 A JPS5781937 A JP S5781937A
Authority
JP
Japan
Prior art keywords
powder
sodium aluminate
alumina sand
binder
water
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
JP15771080A
Other languages
Japanese (ja)
Other versions
JPS588934B2 (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 JP55157710A priority Critical patent/JPS588934B2/en
Publication of JPS5781937A publication Critical patent/JPS5781937A/en
Publication of JPS588934B2 publication Critical patent/JPS588934B2/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
    • B22C1/162—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 use of a gaseous treating agent for hardening the binder

Landscapes

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

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 and mixing in gaseous CO2 atmosphere. CONSTITUTION:An exothermic self-hardening water-soluble mold is molded by adding 3-10 weight parts sodium aluminate having Na2O/Al2O3 molar ratio of 1.5-3.0 and >=60% water and 0.3-1.0pt.wt. Al powder as binder to 100pts.wt. 65-150 mesh alumina sand of high purity. In this case, the alumina sand is cooled by mixing dry ice and sodium aluminate and Al powder are mixed as binder, or after cooling the alumina sand by mixing dry ice, sodium aluminate is mixed in CO2 atmosphere and blended with Al powder. Hardening reaction speed is retarded by sodium aluminate and Al powder and usable time can be extended.
JP55157710A 1980-11-11 1980-11-11 Manufacturing method of heat-generating self-hardening water-soluble mold Expired JPS588934B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55157710A JPS588934B2 (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
JP55157710A JPS588934B2 (en) 1980-11-11 1980-11-11 Manufacturing method of heat-generating self-hardening water-soluble mold

Publications (2)

Publication Number Publication Date
JPS5781937A true JPS5781937A (en) 1982-05-22
JPS588934B2 JPS588934B2 (en) 1983-02-18

Family

ID=15655673

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55157710A Expired JPS588934B2 (en) 1980-11-11 1980-11-11 Manufacturing method of heat-generating self-hardening water-soluble mold

Country Status (1)

Country Link
JP (1) JPS588934B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016042378A1 (en) * 2014-09-19 2016-03-24 Tenedora Nemak, S.A. De C.V. Method for producing a molding material for casting cores

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
WO2016042378A1 (en) * 2014-09-19 2016-03-24 Tenedora Nemak, S.A. De C.V. Method for producing a molding material for casting cores

Also Published As

Publication number Publication date
JPS588934B2 (en) 1983-02-18

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