METHOD OF COLD ROLLING AT CONTINUOUS MILL STAND Russian patent published in 2011 - IPC B21B1/28 

FIELD: process engineering.

SUBSTANCE: invention aims at increasing quality of finished rolled sheet and efficiency of rolling. Proposed method comprises consecutive reduction of strip with stretching in interstand intervals. Specific tension of strip q is selected subject to total reduction ε_Σ, steel yield limit σ_T and strip width B in rolling low carbon steels with σ_T ≤325 MPa, equal to: at relation between strip width and length L_δ of roll body B/L_δ≤0.64 and - for B/L_δ>0.64, while in rolling high-strength steels with σ_T>325 MPa for various ratio B/L_δ specific strip tension q is specified by mathematical relationships.

EFFECT: better flatness of strip, reduced idle intervals.

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