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
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