METHOD OF PRODUCTION OF THE STEEL WITH HOMOGENEOUS PROPERTIES Russian patent published in 2005 - IPC

FIELD: metallurgy; methods of production of steels with homogeneous properties.

SUBSTANCE: the invention is pertaining to the field of metallurgy, in particular, to production of deep-drawing steels used for production of items of the complex configuration, predominantly - he details of motor-cars. The technical result of the invention is increased homogeneity of mechanical properties of the steel and reduction of cost of its production. This technical result is achieved due to the fact, that they conduct a continuous casting of the steel containing of no more than 0.007 mass % of carbon and 0.006 mass % of nitrogen in slabs, heating and hot rolling in bands, refrigeration, a reeling in rollers, etching, cold rolling with compaction of no less than 70 %, annealing and temper rolling. The annealing of cold-rolled steel conduct in the pusher-type furnace at temperatures of 750 ÷ 900°C during 5 ÷ 18 minutes.

EFFECT: the invention ensures increased homogeneity of mechanical properties of the steel and reduction of cost of its production.

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