MANUFACTURING METHOD OF SEMI-FINISHED ROLLED PRODUCTS FOR COLD DEFORMED REINFORCEMENT Russian patent published in 2009 - IPC C21D8/06 C21C7/00 C22C38/18 

FIELD: metallurgy.

SUBSTANCE: it is implemented metal smelting, out-furnace treatment and pouring on continuous caster, blank heating and rolling with inter- deformative subcooling for specified dimension and cooling of finished profile, at first accelerated before coil-former, and then on conveyer, herewith smelting and out-furnace treatment are implemented with receiving of steel, containing, wt %: C-(0.10-0.17), Mn-(0.25-0.50), after out-furnace treatment on the basis of ladle sample it is defined in steel content of C, Mn, Cr, and after rolling it is accelerated cooled with providing of semi-finished rolled products percentage elongation, defined by correlation: δ₅=-12.13×C-6.3×Mn-25.8×Cr+0.09×Tc.f.-0.63×d-21.9, where: δ₅ - percentage elongation, %, C, Mn, Cr - content of carbon, manganese and chrome in sample of metal after out-furnace treatment, wt %, d - diametre of semi-finished rolled products, mm; Tc.f. - temperature on coil-former, °C; 12.13; 6.3; 25.8; 0.09; 0.63; 21.9 - coefficents, received experimentally, calculated after treatment of experimental data by definition of effect of each parametre on semi-finished rolled products percentage elongation.

EFFECT: receiving of required percentage elongation and cost reduction semi-finished rolled products manufacturing.