Selection of optimum strip profile and flatness technology for rolling mills
Proper selection of optimum strip profile and flatness technology for a new rolling mill or assessing the merits of existing equipment id of major importance. Mill trials to accomplish this selection would require a considerable amount of time，effort and expense. Therefore, the development of computer models that can accurately describe the behavior of strip in the roll gap is instrumental to understanding strip profile and flatness phenomena，and the factors influencing them. et the following requirements.
Provide required strip crown control range, usually from 20 to 70um. This must be achieved using the minimum number of sets of roll mechanical crowns.
Provide required strip flatness usually from 16 to 40 I-units.
Provide reduced edge drop.
Provide schedule-free rolling.
In cold rolling, the strip relative crown that was obtained in a hot strip mill is usually maintained while strip flatness is kept between 10 to 20 I-units.
