Method for melting Ti or a high-Ti alloy in CaO refractories
US4710481A · kind A · utility
2Cited by
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20Claims
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Assignee
Inventors
Key dates
| Filing date | Sep 11, 1986 |
| Grant date | Dec 1, 1987 |
| Priority date | — |
| Expiry date | Sep 11, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S29/045
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Ti or a high-Ti alloy is melted in a container composed of high-purity CaO materials on its inner sides. The materials are composed of not less than 99% by weight of CaO, not more than 0.1% by weight of SiO.sub.2, not more than 0.02% by weight of Fe.sub.2 O.sub.3, and not more than 0.5% by weight in total of other metal oxides under a non-oxidizing atmosphere. CaO refractories for use in the melting of Ti or a high-Ti alloy contains not less than 99% by weight of CaO, not more than 0.1% by weight of SiO.sub.2, 0.02% by weight of Fe.sub.2 O.sub.3, and not more than 0.5% by weight of other metal oxides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.