Self-hardening water-soluble mold and process for producing the same
US4196011A · kind A · utility
7Cited by
20References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 26, 1977 |
| Grant date | Apr 1, 1980 |
| Priority date | — |
| Expiry date | Jul 26, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C1/18
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A mold produced by adding to a molding material consisting mainly of alumina a binder prepared by adding an inorganic water-soluble substance to an alcohol or a mixture of an alcohol and water, kneading and molding the mixture, and then drying the molded mixture has water-solubility and self-hardening property. Further, by suitable selection and combination of the inorganic water-soluble substance and the solvent in the binder, the drying step becomes unnecessary or the molding material shows fluidity at room temperature and a self-hardening water-soluble mold requiring no ramming is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.