FIELD: metallurgy, namely continuous casting processes.
SUBSTANCE: method for continuous casting of steel by " melting on melting" process comprises steps of feeding into molds slag forming mixture containing carbon, fluorine and oxides of Ca, Si, Mg, Al, Fe, Mn, Na, K and Li for forming on surface of melt metal protecting liquid slag; at casting process monitoring alkalinity of protection slag; in order to realize it, taking samples of slag from metal heel; determining percentage content of oxides of Ca, Si and Mg in them; at alkalinity of slag (CaO+MgO)/SiO > 1.35 changing slag forming mixture in molds and intermediate ladle; after stabilizing alkalinity of slag in range 0.6 - 1.2 going on casting process.
EFFECT: improved quality of continuously cast billets, lowered number of emergency metal breakouts through envelope of ingots under molds.
1 ex
Title | Year | Author | Number |
---|---|---|---|
SLAG FORMING MIXTURE FOR CONTINUOUS STEEL CASTING | 1992 |
|
RU2044777C1 |
SLAG-FORMING MIXTURE FOR CONTINUOUS POURING OF STEEL | 2008 |
|
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|
RU2175279C2 |
SLAG FORMING MIXTURE FOR IN-MOLD PROTECTION OF STEEL AT PERITECTIC CONVERSION DURING BATCH CONTINUOUS CASTING OF STEEL | 2006 |
|
RU2308351C1 |
SLAG-FORMING MIXTURE FOR STEEL CONTINUOUS CASTING | 1999 |
|
RU2164191C1 |
CONTINUOUS CASTING METHOD | 2002 |
|
RU2210457C1 |
HEAT INSULATION SLAG-GENERATING MIXTURE | 2008 |
|
RU2380194C2 |
METHOD OF METAL CONTINUOUS CASTING | 0 |
|
SU1806040A3 |
Authors
Dates
2008-01-27—Published
2006-02-27—Filed