METHOD OF HOT ROLLING OF THICK-SHEET STEEL Russian patent published in 2008 - IPC B21B1/26 

FIELD: technological processes.

SUBSTANCE: method involves rolling of sheets with given chemical composition and thickness at rolling end temperature Tre. Non-defective product output of rolling steel with thickness of 30...50 mm and carbon equivalent C_e=C+Si/3+Mn/9, where C, Si and Mn is carbon, silicon and magnesium content, mass %, in the steel respectively, and C_e≥0.5%, is improved due to raising ready sheet thickness H and Tre as Ce increases, according to relations: H=30(2C_e)⁷, mm, and where T_o is rolling end temperature for thinnest sheets, °C, with Tre value lowered as sheet width increases.

EFFECT: reduced production cost of sheet steel rolling.

2 cl, 1 ex