Abstract: A cooling device with variable cooling rate for treating metal materials, in particular for cooling steel sheets in plate mills, hot strip mills or thermal treatment lines, by means of a spray nozzle cooling system. The cooling device consists of at least two cooling bars one of each two cooling bars being situated on the lower side and the other on the upper side transversely to the sheet travel direction of the sheet and centrally between two roller table rollers and includes a spray nozzle cooling system with which a plurality of full jet nozzles and a plurality of full cone nozzles are associated, the full jet nozzles being arranged symmetrically to the full cone nozzles. A method for operating the cooling device according to the disclosure.

Abstract: A system and method for removing flatness faults from a metal flat product, in particular a metal sheet or a strip, having multiple straightening rollers arranged on opposite sides of the flat product. In order to simplify and to enable more cost-efficient removal of flatness faults from a metal flat product, at least two cooperating straightening rollers arranged on opposite sides of the flat product each have at least three individually-adjustable partial rollers arranged axially adjacent to one another.

Abstract: A cooling device with variable cooling rate for treating metal materials, in particular for cooling steel sheets in plate mills, hot strip mills or thermal treatment lines, by means of a spray nozzle cooling system. The cooling device consists of at least two cooling bars one of each two cooling bars being situated on the lower side and the other on the upper side transversely to the sheet travel direction of the sheet and centrally between two roller table rollers and includes a spray nozzle cooling system with which a plurality of full jet nozzles and a plurality of full cone nozzles are associated, the full jet nozzles being arranged symmetrically to the full cone nozzles.

Abstract: The invention relates to a roller leveler (1) having a set of upper and lower flattening rollers (2), wherein each flattening roller (2) is provided with a rotary drive (3) actuated by leveler control (4) for rotating the flattening roller (2) to advance a to-be-flattened metallic flat material in a forward direction (F) and, thereby, flatten the flat, metallic material. To achieve an improved and optimal flattening result, the invention proposes that each flattening roller (2) has a first rotary drive (L1, L2 . . . Ln) for driving one axial end of the flattening roller (2), and a second rotary drive (R1, R2 . . . Rn) for driving one axial end of the flattening roller (2) and a second rotary drive (R1, R2 . . . Rn) for driving the other end of the flattening roller, wherein the leveler controller (4) is designed to apply a parameter determining the direction of rotation of the flattening roller (2) to the first and second rotary drives (L1, L2 . . . Ln, R1, R2 . . . Rn) individually based on a pre-set value.

Abstract: A method for operating a roll straightening machine having a number of forming tools, the forming tools including at least one set of upper and lower straightening rollers, a flat metal material to be straightened being conveyed between the upper and lower straightening rollers in a conveying direction. In order to achieve high straightening quality even as wear occurs, the method includes the following steps: a) determining the wear state of at least one of the forming tools; b) determining a correction value and/or a compensation value for the operation of the forming tool on the basis of the determined wear state of said forming tool; c) adapting an operating parameter, in particular an adjustment parameter or setting value, for the forming tool on the basis of the determined correction value and/or compensation value.

Abstract: A straightening machine having an allocated straightening roll drive including a top bearing frame and a bottom bearing frame, in which a plurality of straightening rolls and supporting rolls are held in a cassette-like manner and arranged in an interchangeable manner. An improved adaptability of a straightening machine to different straightening requirements and straightening areas is achieved in that all the straightening rolls and supporting roils respectively arranged in the top and/or bottom bearing frame are distributed into several straightening roll segments that are modularly adapted to one another and each configured in the form of an interchangeable cassette. Each straightening roll segment includes at least one layer of supporting rolls and at least one allocated straightening roll.

Abstract: A system and method for removing flatness faults from a metal flat product, in particular a metal sheet or a strip, having multiple straightening rollers arranged on opposite sides of the flat product. In order to simplify and to enable more cost-efficient removal of flatness faults from a metal flat product, at least two cooperating straightening rollers arranged on opposite sides of the flat product each have at least three individually-adjustable partial rollers arranged axially adjacent to one another.

Abstract: A pressing tool part for eliminating a flatness defect on a flat semi-finished product provided with a pressing surface facing the flat semi-finished product. The pressing tool includes part half segments separated from each other by a material weakening, which are connected to one another on the one hand to by an elastically bendable bending bridge region of the pressing tool part, and on the other hand to a common actuator in order to elastically deform the pressing surface of the pressing tool part as a function of the flatness defect.

Abstract: An apparatus for straightening metal strips, including a first, upper group and a second, lower group of straightening rollers arranged in each case immediately in succession in a strip running direction, and a group of individually controllable actuators arranged alongside one another in a transverse direction. An axial bending profile of at least a first of the straightening rollers is settable by the group of actuators. At least one second group of individually controllable actuators arranged alongside one another in the transverse direction is provided. An axial bending profile of the least a second of the straightening rollers, which is in particular different from the bending profile of the first bending roller, is settable by the second group of actuators.

Abstract: A method and device for controlled straightening and cooling of a wide metal strip, especially a steel strip or sheet metal, running out of a hot rolled strip rolling mill, using pinching rollers arranged in the moving direction of the strip behind vertical double rollers, said pinching rollers producing a tensile stress acting in a longitudinal direction. According to the invention, the range of use of conventional sheet metal cooling systems can be extended to obtain a more even surface of said steel strip with an increased cooling effect. This is achieved by displacing the metal strip or sheet metal between a pre-straightening machine and splash cooling facility in defined conditions of tensile stress by adjusting the tensile stress and by cooling said strip or sheet metal inside said splash cooling facility between successive pairs of pinching rollers and by additionally controlling the tensile stress.

Abstract: A method and device for controlled straightening and cooling of a wide metal strip, especially a steel strip (1) or sheet metal, running out of a hot rolled strip rolling mill, using pinching rollers (5) arranged in the moving direction of the strip (2) behind vertical double rollers (3,4), said pinching rollers producing a tensile stress (6) acting in a longitudinal direction. According to the invention, the range of use of conventional sheet metal cooling systems can be extended to obtain a more even surface of said steel strip (1) with an increased cooling effect. This is achieved by displacing the metal strip (1) or sheet metal between a pre-straightening machine (7) and splash cooling facility (8) in defined conditions of tensile stress (6) by adjusting the tensile stress (6) and by cooling said strip or sheet metal inside said splash cooling facility (8) between successive pairs (5a) of pinching rollers and by additionally controlling the tensile stress (6).

Abstract: A metal-physical model is used in a computer controlled cooling device for a rolling and cooling process for rolling a hot strip or a plate. The cooling parameters are calculated based on initial conditions. The computer uses the metal physical model to instantaneously alter the cooling parameters in response to changes in the final rolling temperatures and the rate at which the hot strip or plate is moved through the cooling device.