METHOD OF DEOXIDIZING AND ALLOYING OF LOW-CARBON VANADIUM-BEARING ELECTRIC STEEL

摘要

The invention relates to ferrous metallurgy, specifically to the production of high-quality vanadium-containing steels. The purpose of the invention is to increase the degree of desulfurization and deacidification, cold resistance and fatigue strength of steel. The method involves melting the charge, removing oxidizing slag, deoxidizing with vanadium ferrosilicon containing titanium in an amount of 2.5-4.0%, and carbon in an amount of 8-12 and 1.0-1.7 kg / ton of metal, respectively. The final deoxidation and doping are carried out in 25-40 minutes at 1610-1650 ° C with vanadium ferrosilicon in the amount of 3-5 kg / ton of metal. 3 tab.