METHOD OF SHEET HOT ROLLING AT REVERSING MILL Russian patent published in 2011 - IPC B21B1/34 

FIELD: process engineering.

SUBSTANCE: proposed method comprises multipass reduction between rolls with setting of roll-to-roll clearance before each pass processing from billet after-pass thickness and rolling force. Increase in accuracy of produced sheet thickness without increasing the number of finishing passes at minor reduction is ensured by defining roll-to-roll clearance by the following formula: S₀=H₁-P_p/G, where H₁ is strip thickness after rolling; G is modulus of stand stiffness; P_p is designed rolling force. Note here that to calculate metal strain resistance P_p is defined proceeding from the moment of rolling during previous pass defined as the product of roll main drive motor mechanical factor and actual current of motor armature.

EFFECT: precise thickness, reduced number of hot rolling passes at reversing mills.

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