HOT STRIP ROLLING METHOD Russian patent published in 2017 - IPC B21B37/40 

FIELD: metallurgy.

SUBSTANCE: method comprises strip rolling by working rolls, measuring temperature of a left T_l and a right T_r of edges of billets by pyrometers and inter-roller gap change based on measured temperature. Wherein inter-roller gap is increased by amount of ΔS/2 from the edge of billet with a higher temperature by changing a position of the upper roller, and it is reduced by amount of ΔS/2 from the opposite edge, wherein the value ΔS is determined from the ratio of where R is working roller radius, mm; Δh is absolute compression: cage strips, mm; B is width of rolled strip, mm, C_k is rigidity of rolling mill bed, t/mm; Δσ_s=σ_s(T_l)-σ_s(T_r), σ_s (T_l) and (T_r)is resistance to rolled metal plastic deformation at temperatures of, respectively, T_l of the left strip edge and T_r of the right strip edge, kg/mm².

EFFECT: elimination of side wedge-shaped bulges and distortion of rolled material.

2 dwg