CAST IRON PRODUCTION METHOD Russian patent published in 2020 - IPC C21C1/10 C21B11/10 C22C37/04 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, particularly, to foundry production, particularly, to production of wear resistant cast iron. Wear-resistant cast iron characterized by uniform distribution of cubic titanium carbide is obtained by direct reduction by electroslag method. Chemical composition of initial oxides is: iron oxide 66.25 %, vanadium oxide 5.5 %, titanium oxide 1.63 %, manganese oxide 2.25 %, chromium oxide 0.2 %, molybdenum oxide 1.86 %, cerium oxide 1.5 %, aluminium oxide 11.6 % and silicon oxide 9.2 %, impurities of calcium, magnesium and phosphorus oxides 0.01 %. Initial oxides are mixed in a solid phase, metal aluminium is added, based on stoichiometry of reduction of titanium oxide and vanadium oxide, and additionally over stoichiometry by 10–15 % coke is added for reduction of iron oxide. Prepared mixture is fed into electroslag kiln crucible in portions equal to 0.01 part of total weight, with interval determined by termination of smoke extraction, melting is carried out at voltage 30 V and current 2000–2500 A.

EFFECT: technical result is production of cast iron with high heat resistance, microhardness and wear resistance.

1 cl, 4 dwg, 3 tbl, 2 ex