Vacuum degassing apparatus
US3975004A · kind A · utility
1Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1975 |
| Grant date | Aug 17, 1976 |
| Priority date | — |
| Expiry date | Jul 8, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21C7/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A vacuum degassing apparatus is so constructed that molten steel is circulated or flowed between a ladle and a vacuum vessel through a tube, the molten steel is degassed in the vacuum vessel, the surrounding air is prevented from flowing into the ladle during a degassing operation by placing a cover at the top of the ladle, an inert gas is forced into the ladle for sealing the molten steel from the surrounding atmosphere, and, when necessary, a space between the ladle and the vacuum vessel is sealed by a bellows.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.