| abstract |
METHOD OF MELTING THE GAS-CONTAINING STRUCTURAL STEEL, including melting of the charge, oxidation of impurities, deoxidation in the amount of 0.2-0.4 kg / t, rare earth metals, zirconium and light metal. a bath, characterized in that, in order to improve the quality of structural steel and reduce the consumption of alloying elements, after the steel has been deoxidized with aluminum and modified with rare earth metals, ferrovanadium in an amount of 1.5-4.0 kg / t is introduced into the furnace along with silicocyrconium in the amount of 1.02, 0 kg / t, after melting; Eleni, the melt is alloyed with nitrogen in the area of the cast nitrated ferroalloy, and, when fed in the ladle, the ferroboron is supplied in a quantity of 0.2-0.3 kg / t and silicocalcium in the amount of 0.8-0.9 kg / t. |