SUPPORTING ROLL Russian patent published in 1997 - IPC

FIELD: rolling production. SUBSTANCE: aim is to increase supporting rolls durability due to embedding of cracks and pitting during strips or sheets production using wide-strip rolling mills of hot rolling. Supporting roll barrel edges have chamfers of length equal to 0.02 - 0.185 of barrel length and depth equal to 3,2×10^-4 - 16×10^-4 of roll barrel diameter and with ratio of chamfer length to its depth equal to 30 - 600. In the case, place of transfer to chamfer on roll barrel is smooth, for example, of "fillet" type. In process of the type rolls operation rolling mill productivity is increased due to decrease of time intervals used for emergency stops of rolling mill because of rolls pitting, rolls usage factor per ton of rolling products is decreased, workload degree on roll-turning and roll-grinding equipment is decreased. EFFECT: increased supporting rolls service life and productivity of rolling mills. 2 cl, 1 dwg