Method for electromagnetically stirring molten steel in continuous casting
US4573515A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1983 |
| Grant date | Mar 4, 1986 |
| Priority date | — |
| Expiry date | Mar 15, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D11/122
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for electromagnetically stirring molten steel in continuous casting wherein in producing cast slabs or blooms, an electromagnetic stirring force is applied to the unsolidified molten steel in the cast slab or bloom being drawn. An electromagnetic stirrer is installed between drawing positions where the unsolidified thickness is 45% and 15%, respectively, of the thickness as viewed in the direction of the thickness of the cast slab or bloom, and stirring in the casting direction is applied to the unsolidified molten steel in such a manner that the product of the magnetic flux density (gauss) at the interface between the unsolidified and solidified portions and the stirring time in minutes (which is defined as the ratio of the stirring effective length (mm) of the electromagnetic stirrer to the casting speed (m/min)) is 1,600 gauss-min or more per m.sup.3 of the total volume (m.sup.3) of unsolidified molten steel present in a region extending to the drawing side from the position where the electromagnetic stirrer is located.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.