Grain refining
US4793971A · kind A · utility
13Cited by
9References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1987 |
| Grant date | Dec 27, 1988 |
| Priority date | — |
| Expiry date | Aug 25, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C1/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for introducing grain refiners into molten media, such as molten aluminum, utilizes a chamber having a discharge immersed in the molten media and having a plasma therein extending from the molten media at the chamber discharge to a site above the discharge. Grain refiner is provided to said site and converted into a superheated spray for introduction into the media. An alternate embodiment includes supplying one or more constituents of a grain refiner compound to the plasma for reaction to form the grain refiner. A gas exits the chamber and enhances introduction into the media.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.