In a roll stand, the working roll inserts are pressed apart by a bending system. A base set-point value (FBB*) is supplied to a bending controller to determine a resultant set-point value (FB*). An actual value (FB) of the bending force is also supplied to the bending controller to determine a base controlled variable (SB) for the bending system so that, when the bending system is actuated with (SB), (FB) is brought as close as possible to (FBB*). From a stabilisation time (t3) after an entry time (t2), the bending controller determines (FB*), additionally taking an actual rolling force (F) into consideration. During an entry time period before (t2) and ending at (t3), an additional set-point value (FBZ*) is supplied to the bending controller for determining (FB*). (FB) is thus greater than (FBB*).

A roll press rolls each including an upper roll and a lower roll that are supported by a main bearing at both ends and rotate at a predetermined speed, upper and lower bending bearings that are disposed outside each of the main bearings and correct deflection of the press rolls by receiving a bending load, an upper reverse operation bending mechanism provided in the upper roll that operates with hydraulic oil, a lower reverse operation bending mechanism provided in the lower roll, and two upper reverse operation bending mechanisms and two lower reverse operation bending mechanisms being installed in the upper and lower bending bearings, respectively. Deflection occurring in the upper roll and the lower roll is corrected by causing the upper reverse operation bending mechanism or the lower reverse operation bending mechanism to generate downward power or upward power, respectively.

A roll press rolls each including an upper roll and a lower roll that are supported by a main bearing at both ends and rotate at a predetermined speed, upper and lower bending bearings that are disposed outside each of the main bearings and correct deflection of the press rolls by receiving a bending load, an upper reverse operation bending mechanism provided in the upper roll that operates with hydraulic oil, a lower reverse operation bending mechanism provided in the lower roll, and two upper reverse operation bending mechanisms and two lower reverse operation bending mechanisms being installed in the upper and lower bending bearings, respectively. Deflection occurring in the upper roll and the lower roll is corrected by causing the upper reverse operation bending mechanism or the lower reverse operation bending mechanism to generate downward power or upward power, respectively.

A method for manufacturing flexible rolling of metal strips, in which a metal strip with pre-definable material thickness s guided through a mill stand by at least two operating steps, which includes several rolls, the metallic strip is during the rolling operation set to lead through a roll gap, where a curve bending line is steered to achieve a defined profile.

A method of controlling a rolling mill production system for production of a coil-shaped end product from a slab, the production including processing the slab by sequentially arranged production units, the processing by the production units resulting in a respective strip-shaped product having physical data, the method including modeling, under consideration of the physical data, the processing of a testing product by a plurality of production units arranged downstream from a given production unit while taking into account the physical data. If the modelling shows that, under consideration of the physical data, one of the products resulting from processing by the downstream production units does not meet a predetermined quality criterion, the intended manufacture of the product is interrupted and a signal relating to the interrupting is outputted.

A method of controlling a rolling mill production system for production of a coil-shaped end product from a slab, the production including processing the slab by sequentially arranged production units, the processing by the production units resulting in a respective strip-shaped product having physical data, the method including modeling, under consideration of the physical data, the processing of a testing product by a plurality of production units arranged downstream from a given production unit while taking into account the physical data. If the modelling shows that, under consideration of the physical data, one of the products resulting from processing by the downstream production units does not meet a predetermined quality criterion, the intended manufacture of the product is interrupted and a signal relating to the interrupting is outputted.

A plate crown control device controls tandem rolling equipment based on delivery-side plate crown setting calculation values of stands calculated by setting calculation, mechanical plate crown setting calculation values of the stands, and setting values of bending forces and shift positions of the stands. A processor calculates first learning current values based on differences between mechanical plate crown observation values and mechanical plate crown actual calculation values. The processor prorates first learning values with first learning current values and smoothing gains and updates the first learning values. The processor calculates, in the setting calculation for the next and subsequent materials, setting values of bending forces and shift positions of the stands using mechanical plate crown setting calculation values after correction obtained by adding the first learning values to the mechanical plate crown setting calculation values.

A plate crown control device controls tandem rolling equipment based on delivery-side plate crown setting calculation values of stands calculated by setting calculation, mechanical plate crown setting calculation values of the stands, and setting values of bending forces and shift positions of the stands. A processor calculates first learning current values based on differences between mechanical plate crown observation values and mechanical plate crown actual calculation values. The processor prorates first learning values with first learning current values and smoothing gains and updates the first learning values. The processor calculates, in the setting calculation for the next and subsequent materials, setting values of bending forces and shift positions of the stands using mechanical plate crown setting calculation values after correction obtained by adding the first learning values to the mechanical plate crown setting calculation values.

A closed loop roller leveler system has a roller leveler; a flatness sensor; and at least one arm for raising and lowering the flatness sensor. The sensor includes a plurality of sensing rollers extending across a width of a strip of material. The sensor further has at least one load cell and at least one laser sensor for measuring the flatness level of the strip.

A closed loop roller leveler system has a roller leveler; a flatness sensor; and at least one arm for raising and lowering the flatness sensor. The sensor includes a plurality of sensing rollers extending across a width of a strip of material. The sensor further has at least one load cell and at least one laser sensor for measuring the flatness level of the strip.