High temperature investment material and method for making solid investment molds
US6746528B1 · kind B1 · utility
4Cited by
12References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 24, 2003 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Apr 24, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/449
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved phosphate-type refractory investment material and method for marking solid investment molds especially useful for casting high melting point metals and alloys, such as platinum and the like. The material consists essentially of one or more phosphate salts, one or more water soluble organic acids, and refractory powder. The material can be prepared as a dry powder blend which is easily shipped to the user and mixed with water at the time of investing the flask. Alternatively, the salt and/or organic acid can be combined with the refractory powder at the time of mixing with water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.