WORKING ROLL FOR COLD ROLLING Russian patent published in 2016 - IPC B21B27/00 

FIELD: technological processes.

SUBSTANCE: invention is intended for use in stands of continuous and reversing mills of cold rolling of strips. Roll has uneven profile of micro roughed barrel surface. Reduced metal consumption of rolls and increase of efficiency are ensured by fact that middle part of barrel has microscopic roughness at R_a=5.5-7.0 mcm, and edge sections have microscopic roughness at R_a=0.8-1.2 mcm, which is equal to 0.1-0.22 from limit values of micro roughed middle part of roll barrel. Width of end sections of working zone of roll with lower micro roughed B=100 mm.

EFFECT: invention allows reducing external friction coefficient in deformation zone, increasing coefficient of drawing and to reduce longitudinal tensile stresses on edge sections of strip.

1 cl, 1 dwg, 1 tbl