Class 700/154 - Flatness or crown control

Subclass of Class 700 - Data processing: generic control systems or specific applications
Definition: Subject matter wherein the controlled or detected condition
No. of patents: 30
Last issue date: 11/01/2011

Number	Title	Issue Date
8050792	Method and device for optimization of flatness control in the rolling of a strip A method and a device for optimization of flatness control in the rolling of a strip using any number of mill stands and actuators. A mill model is used represented by a mill matrix that includes information of the flatness effect of each actuator. Each actuator's f...	11/01/2011
7623940	Direct-manufactured duct interconnects A method for forming a duct interconnect generally includes providing a digital model of a first duct structure and a second duct structure, the first duct structure including a first duct section having a passage for conveying a substance and an interconnect compon...	11/24/2009
7577489	Method and device for measuring, determining and controlling flatness of a metal strip A method for optimizing measurement and control of the flatness of a strip of rolled material. A mapping is accomplished by associating to relevant flatness fault types a reference strip model and an actuator space conversion matrix. A device for optimizing measurem...	08/18/2009
7310982	Rolling method and rolling apparatus for flat-rolled metal materials The invention provides a rolling method for a flat-rolled metal material and a rolling apparatus for the method each capable of stably producing a flat-rolled metal material free from camber or having an extremely light camber. The method is a rolling method of a fl...	12/25/2007
7305859	Rolling mill The rolling mill comprises a pair of work rolls for rolling a plate material in the thickness direction, a guide for guiding the leading end of the plate material between the work rolls, and a rolling oil supply member for supplying rolling oil between the work roll...	12/11/2007
7293440	Method of setting/controlling wedge in plate material rolling A wedge setup/control method for plate material rolling ensures that the work side and drive side are equal in the rolled plate thickness. The wedge setup/control method, which is used in reversible rolling of a plate material with a rough mill for hot rolling, incl...	11/13/2007
6948347	Graphical rolled steel sheet flatness display and method of using same A method for measuring and displaying the flatness of a rolled steel sheet is disclosed that includes the steps of measuring tension in the sheet at a plurality of locations on the surface of the sheet and determining a plurality of tension ranges into which the sen...	09/27/2005
6857301	Displacement-type shape sensor for multi-roll leveler A displacement-type shape sensor for detecting the flatness of a strip of material. A flatness detection system may be formed from a plurality of said sensors. The displacement-type shape sensor preferably employs a roller bearing coupled to an actuator. A linear di...	02/22/2005
6779373	Method for preadjusting and controlling the strip planarity in flexible single-pass and reversing rolling of a strip-shaped material web A method for preadjusting and controlling strip planarity in flexible single-pass and reversing rolling of a strip-shaped material web using at least one work roll pair forming a roll gap and back-up rolls for the work rolls, and devices for roll adjustment, roll be...	08/24/2004
6697699	Method and device for influencing relevant quality parameters of a rolling strip Method for influencing relevant quality parameters of a rolling strip, particularly the profile or flatness of the rolling strip, in a roll stand with rolls, by adjusting the crownings of the rolls, i.e., the surface geometry of the rolls in the longitudi...	02/24/2004
6513358	Method and device for controlling flatness A method for controlling flatness of a strip (1) of rolled material rolled to a first flatness target and coiled and that is subsequently uncoiled, and a system which employs the method. Measurements of the flatness of the strip (1) during rolling are com...	02/04/2003
6298277	System for making an optical glass from a blank The system including a device (2) for applying an adapter (11) to a blank (1) for transferring it into and mounting it in a trimming device (3) controlled in accordance with trimming information. The system includes a device for acquiring the characterist...	10/02/2001
6112394	Method of continuously casting and finish-rolling a cast strand within a predetermined finished width tolerance A method of continuously casting and finish-rolling a cast slab within a predetermined finished width tolerance, wherein for the cast slab and any subsequent slab an adjustment of the mold position is carried out particularly in accordance with different ...	09/05/2000
5448901	Method for controlling axial shifting of rolls A system for controlling axial shifting of working rolls on a rolling mill is provided, and more particularly, a control system method which includes monitoring sensors for the rolling mill, processing information and calculating the non-all statical fric...	09/12/1995
5373545	Method for the on-line nondestructive measurement of a characteristic of a continuously produced The process measures a characteristic (X) which is difficult to measure of a continuously produced product and comprises: choosing at least one easily measurable second characteristic (Y) whose variations are correlated to the variations of the first character...	12/13/1994
5267170	Method and apparatus for controlling rolling mill According to this invention, a rolled sheet rolled by a reduction roll of a rolling mill is divided into a plurality of areas in a direction of its width, and sheet flatness or thickness values are measured in the plurality of areas. Bending forces, level...	11/30/1993
5241847	Rolling control method and apparatus In order to reflect a difference between an actual value and a target value of a strip profile of a product at a tandem mill, the load pattern for the next rolled material is changed in accordance with the difference of a target value and an actual value ...	09/07/1993
5233852	Mill actuator reference adaptation for speed changes A method providing a rolling mill with compensation for changes occurring in rolling parameters that result from changes occurring in mill speed. The rolling parameters are under control of actuators that are connected to receive control reference voltage...	08/10/1993
5193066	Equipment for adjusting the shape of a running band-like or plate-like metal material in the width direction A target shape adjusting equipment of a metal material furnished with an expert system by adaptive inference and learning inference processing for applying the engineering know-hows of skilled operators being engaged in the control of the shape in the wid...	03/09/1993
5126947	Method of controlling plate flatness and device therefor An improved plate flatness control method adapted to effect a control so that plate flatness of a rolled material is made optimum by adjusting manipulated variables. In determining correction quantities of the manipulated variables, under the constraint t...	06/30/1992
4860212	Rolled strip shape detecting device with high accuracy A rolled strip shape detecting device includes a tension detecting device for detecting tension applied to a shape detecting roller, a storage device for storing information relating to the rolled strip and the roller, and an arithmetic device for computi...	08/22/1989
4805492	Method for controlling a shape of a plate In rolling mill equipment provided with a roll bending mechanism for removing an unacceptable shape of a plate in width direction of the plate and a crown of a plate in the form of an uneven configuration at both edges with respect to a center line of the...	02/21/1989
4736305	Method of determining a draft schedule for a continuous rolling mill A method of determining a draft schedule for a continuous rolling mill of n stands which gives consideration to both sheet crown and flatness is disclosed. Using (n-1) simultaneous equations for sheet crown, flatness, and power distribution, the exit side...	04/05/1988
4726213	Method of controlling a shape of a rolled sheet material A shape controlling method for controlling the shape of a sheet rolled in a rolling mill, with the shape pattern of the sheet being approximated by a formula of an order of a large number, in accordance with the detected shape signals. Asymmetrical fundam...	02/23/1988
4633692	Device for determining a setting value of a shape operating amount in a rolling mill A device for determining a setting value of a shape operating amount in a continuous rolling mill having shape controlling means therein. As rolling conditions such as thicknesses, width, rolling loads, roll crown, incoming crown, and incoming flatness ar...	01/06/1987
4633693	Method of controlling the strip shape and apparatus therefor Controlling for obtaining the aimed strip shape using a rolling mill provided with rolls, which are variable in amount of crown by feeding a pressurized oil in the inside. In addition, the rolling mill is provided with right and left pressing-down balance...	01/06/1987
4458515	Method and apparatus for variably controlling transverse rigidity of rolling machine In a sheet rolling mill having work rolls and backup rolls, rolling of flat sheets is facilitated by controlling constant the transverse rigidity or deflection in the direction of width of rolls. The rolling force is detected, and based on the rolling for...	07/10/1984
4400957	Strip or sheet mill with improved regulating device and method The invention relates to a strip or sheet mill having working rolls, backup rolls and axially displaceable intermediate rolls positioned therebetween. Associated with the rolled strip of the rolling mill is a flatness measuring device (e.g., for measuring...	08/30/1983
4137741	Workpiece shape control A method of controlling the shape of a workpiece in a rolling mill through the control of workpiece crown as the workpiece is being rolled includes the calculation of the roll-separating force required on each reducing pass as a function of roll elasticit...	02/06/1979
3990284	Method of and device for controlling the planeness of band-shaped material A method of and device for controlling the planeness of band-shaped material, according to which the band to be rolled is, in a continuous manner, passed into the roller gap of and between two rollers while the temperature of the band being rolled is meas...	11/09/1976

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Class 700/154 - Flatness or crown control