METHOD OF DETERMINING NONUNIFORMITY ALONG ROLL GAP OF ROLLING MILL, SPEED OF METAL IN DIRECTION OF MOVEMENT OF STRIP ROLLED UNDER TENSION Russian patent published in 2005 - IPC

FIELD: rolling; sheet rolling processes.

SUBSTANCE: proposed method is based on measuring distribution of relative elongations of band longitudinal sections of strips detected by measuring device. According to invention, longitudinal band sections of strip chosen by measuring device adjoin each other without gaps and overlaps covering entire width of strip and strip tension is measured additionally. Relative overspeeding of metal in direction of strip movement in band longitudinal sections of strip singled out by measuring device relative to metal speed in one of band longitudinal sections of strip singled out by measuring device at minimum speed of metal are calculated using mathematical dependence. Relative overspeeds of metal in direction of strip movement in band longitudinal sections of strip singled out by measuring device, as compared with minimum speed of metal in one of band longitudinal sections of strip singled out using measuring device can be used to adjust profile of roll gap for producing strip of high planeness.

EFFECT: improved planeness of rolled strips owing to increased accuracy of measurement of nonuniformity of metal flow in process of rolling.