Gas blowing nozzle, and production and usage thereof
US4438907A · kind A · utility
16Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1982 |
| Grant date | Mar 27, 1984 |
| Priority date | — |
| Expiry date | Jun 2, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S239/19
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A gas blowing nozzle is produced by molding a non-porous substance into a molding frame under pressure and at the same time positioning a plurality of gas passageways forming members at predetermined spaces and distances from each other. The passageway holes have cross sectional shapes as desired, so that the gas blowing may be accurately controlled to perform refining of molten metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.