Method of preventing contact of oxygen with a metal melt
US6443220B1 · kind B1 · utility
1Cited by
2References
20Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 13, 1999 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Aug 13, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D11/0697
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In a method of preventing contact of oxygen with a metal melt, metal melt flows into a casting chamber bounded by walls (1, 2, 13) and leaves this chamber as a stream. In order to completely prevent contact of oxygen with a metal melt and thus reoxidation, oxygen attempting to enter via any gaps (18) between the walls (1, 2, 13) and/or adhering to the walls (1, 2) is reacted to form a compound which is not injurious to the metal melt (20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.