METHOD OF ROLLING MILL OPERATION WITH EDGE DETECTION Russian patent published in 2013 - IPC B21B37/68 

FIELD: process engineering.

SUBSTANCE: strip 2 in multi-stand mill passes sequentially through stands 1. Strip 2 is fed to every stand 1 with respect to central line of rolling with known adequate shift V of its head part and with known adequate inclination of said part SE at inlet side so that head part 8 gets out of stand 1 with appropriate shift V, head part inclination SA at outlet side and curvature K at outlet side. Wedge formation in the strip is ruled out by eliminating difference in stretching stresses between strip edges due to that fact that inclination SA at outlet side is defined from inclination SE on inlet side and reduction in stand 1. Strip head part curvature K at outlet side is defined from the results of appropriate measurements and other appropriate data. Appropriate curvature K of strip head part at outlet side is used to define appropriate control effect S for appropriate mill stand 1 and/or stand 1 immediately downstream thereof for control over said stand 1.

EFFECT: higher quality of rolled stock.

20 cl, 12 dwg