Apparatus for introducing elements into molten metal streams and casting in inert atmosphere
US4391319A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1981 |
| Grant date | Jul 5, 1983 |
| Priority date | — |
| Expiry date | Jun 29, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D11/11
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Aluminum pellets are ejected from the nozzle of an elongated tube into a stream of liquid steel flowing from a tundish into a continuous casting mold. Protective gas is utilized to propel the pellets of aluminum from the elongated tube into the molten stream. A special nozzle structure for the elongated tube insures that the aluminum pellets will properly impinge upon and mix with the molten stream. The elongated tube is retained within a larger cylindrical tube that directs low velocity, protective gas at the molten stream. The protective gas, such as nitrogen or argon, provides essentially nonreactive atmosphere that envelops the molten stream of steel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.