METHOD FOR PRODUCING RECOVERY COATED STEEL CORE FOR PACKAGING APPLICATIONS AND RECEIVED PACKAGING STEEL PRODUCT Russian patent published in 2017 - IPC C21D8/02 B21B1/28 C25D5/50 C21D9/60 

FIELD: metallurgy.

SUBSTANCE: method involves obtaining a slab of steel containing %: C 0.003 or less, N 0.004 or less, Mn 0.05 to 0.5, P 0.02 or less, Si 0.02 or less, S 0.03 or less, Al 0.1 or less, iron and unavoidable impurities - the rest, hot rolling of the slab at a final temperature higher or equal to the phase transition temperature Ar₃, Single or double cold rolling of the belt. With double cold rolling, recrystallization annealing is carried out between the cold rolling stages, electrodeposition of the tin layer onto at least one side of the belt. The coating weight of a layer of tin or layers on one or both sides of the tape is not more than 1000 mg/m²; annealing the coated tape by heating it at a rate exceeding 300°C/s, up to temperature T_a from 513 to 645°C with exposure at T_a for a time t_a with the conversion of the tin layer to an iron-tin alloy layer which contains at least 90% by weight, preferably 95 wt % FeSn with 50% at. iron and 50% at. tin to obtain a reduced steel microstructure in the absence of recrystallization of the cold rolled steel strip and rapid cooling of the coated tape at a rate of at least 100°C/sec.

EFFECT: increasing the corrosion resistance of the packaging tape.

10 cl, 3 tbl