FIELD: metallurgy.
SUBSTANCE: hot rolled strip is produced, exposed it to etching, cold rolling, and then thermal treatment by means of heating to 710-850°C with further cooling with speed of 60-80°C/s, repeated heating to 260-350°C and soaking for at least 20 s. The hot rolled strip is made of steel of the following chemical composition, wt %: 0.06-0.11 C, 0.4-3.5 Mn, 0.001-0.03 Si, 0.01-0.49 Cr, 0.01-0.05 Al, 0.001-0.012 N, not more than 0.1 Ni, not more than 0.1 Cu, balance - Fe.
EFFECT: improved strength and plastic properties of sheet steel.
2 cl, 3 tbl, 2 ex
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