FIELD: metallurgy.
SUBSTANCE: slab heating is performed to temperature of 1280°C-1390°C so that the substance acting as inhibitor can be converted to the state of solid solution. After that, slab is subject to hot rolling in order to obtain steel strip. Steel strip is subject to annealing for formation of primary inhibitor in steel strip. Then, steel strip is subject to cold rolling for one or more times. After that, steel strip is subject to annealing in order to implement decarbonisation and perform primary recrystallisation. Then, nitration of steel strip is performed in mixed medium consisting of gaseous hydrogen, nitrogen and ammonia in the position at which steel strip can be moved, for formation of secondary inhibitor in steel strip. After that, steel strip is subject to annealing so that secondary recrystallisation can be performed.
EFFECT: improving magnetic properties of slab with certain chemical composition.
9 cl, 8 tbl, 7 dwg, 4 ex
