High temperature investment material and method for making solid investment molds
US6949136B2 · kind B2 · utility
7Cited by
13References
15Claims
0Family size
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Key dates
| Filing date | Jun 7, 2004 |
| Grant date | Sep 27, 2005 |
| Priority date | — |
| Expiry date | Jun 7, 2024 |
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 making 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, a water soluble acidic constituent, 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 acidic constituent 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.