Sodium addition to aluminum
US3993477A · kind A · utility
2Cited by
1References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1974 |
| Grant date | Nov 23, 1976 |
| Priority date | — |
| Expiry date | Oct 21, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C1/026
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Our invention relates to the feeding of sodium to aluminum containing silicon as an alloying element in hypoeutectic percentages by flowing the molten aluminum through a trough and feeding a tube which contains sodium within it into the aluminum in the trough, the tube being preferably fed in countercurrent direction with special mixing and a protective surface coating for the flowing molten aluminum. The invention appears primarily applicable to casting large masses of aluminum such as are used in the melts which produce aluminum ingots for sale to foundries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.