JPS5781938A - Manufacture of exothermic self-hardening water-soluble mold - Google Patents
Manufacture of exothermic self-hardening water-soluble moldInfo
- 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
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
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)
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)
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 |
-
1980
- 1980-11-11 JP JP55157711A patent/JPS588935B2/en not_active Expired
Patent Citations (2)
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)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5250598A (en) | Rare earth-cobalt magnet | |
JPS5781938A (en) | Manufacture of exothermic self-hardening water-soluble mold | |
GB1488916A (en) | Electrically insulating composition | |
JPS5781937A (en) | Manufacture of exothermic self-hardening water-soluble mold | |
GB1428788A (en) | Method of producing a refractory article | |
JPS5463300A (en) | Manufacrure of electric device | |
JPS5536031A (en) | Fluid moldable water soluble mold | |
GB1005136A (en) | Ceramic compositions | |
JPS56105844A (en) | Fast-curing aqueous mold wash for use of self-hardening organic casting mold | |
JPS5530365A (en) | Casting sand | |
SU1424937A1 (en) | Sand for making moulds and cores | |
ES469029A1 (en) | Refractory cement based on liq. aluminium phosphate binder - for fixing casting plate in chill moulds | |
SU446346A2 (en) | Thermal insulation coating for casting molds | |
RO95104B1 (en) | Moulding compound | |
KR790000646B1 (en) | Casting sand | |
JPS5781939A (en) | Mold material | |
GB1139388A (en) | Concrete | |
SU555969A1 (en) | Mixture for hardening shell ceramic molds | |
EP0292307A3 (en) | Compositions and methods for no mix compounds | |
JPS5249009A (en) | Magnetic head and process for process for production of same | |
GB996894A (en) | Production of refractory objects | |
JPS5772906A (en) | Preparation of powdery solid cosmetic | |
GB1016473A (en) | Fabrication of exothermic,self-hardening mould | |
JPS5659558A (en) | Production of mold | |
JPS55158847A (en) | Casting sand |