Metal rolling process - with ratio in peripheral velocity between pair of upper and lower rolls controlled so metal may be rolled to desired shape or tolerances

摘要

The cross-sectional shape of the rolled prod. is monitored and any deviation from the desired shape consequently corrected by adjusting the ratio of peripheral velocities between the upper and lower work rolls A suitable appts. comprises a rolling mill having upper and lower work rolls which can be independently driven at different speeds, a prod. shape sensor, and associated with the latter a control system capable of computing the variation in peripheral velocity ratio required to achieve the necessary degree of shape correction. The control system also controls the work roll drive mechanisms accordingly. The invention permits the prodn. of flat strip from a mill of simple construction without the provision of roll-bending equipment.