FIELD: metallurgy.
SUBSTANCE: steel is supplied to crystalliser from intermediate ladle through immersion bucket. The contents of nitrogen are evaluated in steel by means of samples of liquid steel taken from the intermediate ladle and crystalliser. Nitrogen of 99.9-99.0% purity is introduced into the immersion bucket and/or into solid stop of the intermediate ladle at an amount providing increased contents of nitrogen in the samples of steel from the crystalliser in comparison with those taken from the intermediate ladle at 0.0002-0.0010%.
EFFECT: upgraded quality of steel sheets surface.
3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING ESPECIALLY-LOW-CARBON STEEL | 2013 |
|
RU2517626C1 |
| PROCESS OF STEEL TREATMENT IN LADLE | 1998 |
|
RU2121513C1 |
| METAL CONTINUOUS CASTING PROCESS AT TRANSITION MODES OF CASTING | 2004 |
|
RU2255832C1 |
| METHOD OF PRODUCING ESPECIALLY-LOW-CARBON STEEL | 2014 |
|
RU2564205C1 |
| "MELTING ON MELTING" METHOD FOR CONTINUOUS CASTING OF STEEL ONTO SLAB AND BLOOM BLANKS | 2006 |
|
RU2315680C2 |
| HEAT INSULATION MIXTURE FOR PROTECTION AND HEAT INSULATION OF METAL IN INTERMEDIATE AND STEEL CASTING LADLES AT STEEL CONTINUOUS CASTING | 2005 |
|
RU2308350C2 |
| METHOD OF STEEL CONTINUOUS CASTING | 2010 |
|
RU2422239C1 |
| METHOD OF STEEL CONTINUOUS CASTING | 2010 |
|
RU2428274C1 |
| METHOD OF OBTAINING CONTINUOUSLY CAST INGOTS | 0 |
|
SU1787065A3 |
| TUNDISH LADLE FOR CONTINUOUS CASTING OF STEEL | 2001 |
|
RU2185261C1 |
