METHOD OF PRODUCING REINFORCEMENT STEEL Russian patent published in 2019 - IPC C21D8/08 C22C38/54 B21B1/16 B21C1/00 

FIELD: metallurgy.

SUBSTANCE: to obtain strength of not less than 1700 N/mm², conditional yield point of not less than 1550 N/mm² and relative elongation at break of not less than 7.5 % method involves melting of steel of specified chemical composition with total content of Cr + Ni + Cu + Mn ≤ 1.4 and ratio Al/V within range of less than 0.09, rolling into rolled stock, thermal treatment of rolled wire by heating in furnace to temperature of 900–940 °C followed by isothermal quenching for 85–110 seconds in molten lead at temperature of 530–560 °C and final cooling by water, etching, cold drawing of rod with total reduction degree of 60–65 %.

EFFECT: invention relates to metallurgy, namely, to production of steel high-strength wire fittings produced by cold drawing and thermomechanical treatment.

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