METHOD OF PRODUCTION OF SHEETS AND PLATES Russian patent published in 2000 - IPC

FIELD: metallurgy, more specifically, production of critical rolled products for manufacture of pipes for oil and gas pipelines. SUBSTANCE: method includes melting of steel of definite chemical composition, ladle treatment of steel, casting of steel into ingot molds, ingot austenization, rolling of ingots into slabs, heating of blanks, preliminary deformation at temperature of 980-1060 C, final deformation at 750-850 C, and final cooling of sheets and plates down to ambient temperature. EFFECT: higher cold and corrosion resistance of sheets and plates. 2 cl, 1 ex