US20240198402A1 - Roll steering control systems and methods for tandem mills - Google Patents

Roll steering control systems and methods for tandem mills Download PDF

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Publication number
US20240198402A1
US20240198402A1 US18/555,576 US202218555576A US2024198402A1 US 20240198402 A1 US20240198402 A1 US 20240198402A1 US 202218555576 A US202218555576 A US 202218555576A US 2024198402 A1 US2024198402 A1 US 2024198402A1
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United States
Prior art keywords
work stand
parameter
work
metal substrate
measured
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Pending
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US18/555,576
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English (en)
Inventor
Joao-Otavio Tonhao
Braulio Alcir de Oliveira Junior
Andre Simoes-Freitas
Jorge Schaefer
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Novelis Inc Canada
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Novelis Inc Canada
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Priority to US18/555,576 priority Critical patent/US20240198402A1/en
Publication of US20240198402A1 publication Critical patent/US20240198402A1/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • B21B37/66—Roll eccentricity compensation systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/18—Automatic gauge control
    • B21B37/20—Automatic gauge control in tandem mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • B21B37/62—Roll-force control; Roll-gap control by control of a hydraulic adjusting device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2271/00—Mill stand parameters
    • B21B2271/02—Roll gap, screw-down position, draft position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2271/00—Mill stand parameters
    • B21B2271/02—Roll gap, screw-down position, draft position
    • B21B2271/025—Tapered roll gap

Definitions

  • This application relates to metal processing generally, and, more specifically, to systems and methods for roll steering control in a rolling mill.
  • Rolling is a metal forming process in which a metal substrate is passed through a pair of work rolls of a work stand. The resulting contact between the metal substrate and the work rolls affects a thickness profile, flatness, and quality of the metal substrate.
  • the inclination of the work rolls relative to a pass line of the metal substrate through the work stand, or roll steering, is one mechanism that may be used to affect a parameter of the metal substrate exiting the work stand.
  • roll steering has required manual control by an operator to set a steering (tilting) value for each work roll and adjust it during production. This control is time consuming, may be inaccurate due to susceptibility to operator error, does not account for actual rolling mill conditions (and thus may be inaccurate), and does not allow for adequate control in real time.
  • a method for controlling roll steering during rolling of a metal substrate includes generating a model for a work stand of a rolling mill based on setup data. Generating the model may include determining an adjustment value for the work stand. The method may also include receiving a measured parameter about the metal substrate at a location upstream from the work stand from a sensor and determining an expected output parameter for the work stand by modifying the measured parameter by the adjustment value. In various embodiments, the method includes comparing the expected output parameter with a target output parameter for the work stand and actuating a steering control actuator for the work stand such that the expected output parameter is within a predetermined tolerance of the target output parameter. The steering control actuator is adapted to control an inclination of at least one work roll of the work stand relative to a pass line of the metal substrate.
  • a rolling mill includes a steering control system, and the steering control system includes a steering control actuator, a sensor, and a controller.
  • the steering control actuator controls an inclination of a work roll of a work stand of the rolling mill, and the sensor measures a parameter of a metal substrate upstream from the work stand.
  • the controller is operably connected with the steering control actuator and the sensor and includes a processor and a memory coupled to the processor
  • the memory includes instructions executable by the processor for generating a model for the work stand and determining an adjustment value for the work stand, receiving the measured parameter from the sensor, and determining an expected output parameter by adjusting the measured parameter by the adjustment value.
  • the memory may also include instructions executable by the processor for comparing the expected output parameter with a target output parameter and actuating the steering control actuator such that the expected output parameter is within a predefined tolerance of the target parameter.
  • a steering control system for a rolling mill includes at least one processor and a memory coupled to the processor.
  • the memory includes a plurality of instructions executable by the processor for generating a model for a work stand and determining an adjustment value for the work stand, receiving a measured parameter about a metal substrate from a sensor upstream from the work stand, and determining an expected output parameter by adjusting the measured parameter by the adjustment value.
  • the memory may also include instructions executable by the processor for comparing the expected output parameter with a target output parameter and generating a control response based on the expected output parameter being outside of a predefined tolerance of the target parameter.
  • FIG. 1 illustrates a rolling mill with a steering control system according to embodiments.
  • FIG. 2 illustrates a rolling mill with a steering control system according to embodiments.
  • FIG. 3 is an exemplary method for controlling roll steering with a steering control system according to embodiments.
  • Described herein are systems and methods for controlling roll steering of one or more work rolls of a work stand of a rolling mill during rolling. While the systems and methods described herein can be used with any metal, they may be especially useful with aluminum or aluminum alloys. In certain embodiments, the systems and methods described herein may automatically control roll steering during rolling.
  • a model is generated for the work stand based on setup data, and the model includes an adjustment value for the work stand.
  • a model may be generated for each work stand based on setup data for each work stand, and each model includes an adjustment value specific to the particular work stand.
  • the adjustment value is a correction value indicative of the actual efficiency of the work stand or deviation of the actual performance of the work stand compared to expected performance.
  • the setup data may include data measured from a prior rolling operation, although it need not in other embodiments.
  • the setup data may include a parameter measured by a sensor, an input parameter, or various combinations thereof.
  • a measured parameter may be measured with one or more sensors including, but not limited to, tension meters, gauge meters, flatness rolls, optical sensors, cameras, temperature sensors, combinations thereof, or other sensors as desired.
  • the measured parameter may include, but is not limited to, a tension in the metal substrate, a chemistry and/or composition of the metal substrate, a temperature of the metal substrate, etc.
  • the input parameter may be other parameters as desired that may not necessarily be measured by a sensor.
  • the input parameter may include, but is not limited to, a width of the metal substrate or a thickness of the metal substrate.
  • the aforementioned parameters are provided for reference purposes and should not be considered limiting as the model and/or adjustment value for each work stand may be generated using various setup data as desired, including more than one measured parameter.
  • a sensor may measure a parameter of the metal substrate at a location relative to the work stand.
  • a controller may use the measured parameter as an input to the model to determine an expected output parameter by modifying the measured parameter by the adjustment value.
  • the expected output parameter may be compared to a target output parameter for the work stand, and a steering control actuator for the work roll stand may be actuated to adjust the expected output parameter to within a predetermined tolerance of the target output parameter.
  • the controller may more accurately predict the output result from the rolling mill.
  • comparing the expected output parameter i.e., the measured parameter modified by the adjustment value
  • the target output parameter may allow for the system to achieve target output parameters faster and with improved accuracy.
  • FIG. 1 illustrates an embodiment of a rolling mill 100 for a metal substrate 102 .
  • the rolling mill 100 includes a plurality of work stands 104 A-C, although in other embodiments the rolling mill 100 may include any number of work stands as desired, including a single work stand, two work stands, or more than three work stands.
  • Each work stand 104 A-C includes a pair of work rolls 106 .
  • Each work roll 106 may be supported by one or more intermediate rolls 108 .
  • Bearings or actuators (not illustrated) may be provided along the intermediate rolls 108 .
  • the bearings may apply bearing loads on the intermediate rolls 108 , which transfer the load to the work rolls 106 such that the work rolls 106 apply a work roll pressure on the metal substrate 102 as the metal substrate 102 moves along a pass line and between the work rolls 106 in a processing direction 109 .
  • each work stand 104 A-C optionally includes a steering control actuator 110 A-C that may be used to control an inclination or tilt of the work rolls 106 relative to the pass line of the metal substrate 102 and across a width of the metal substrate (i.e., in a direction coming out of the page in FIG. 1 ).
  • the steering control actuators 110 A-C control the inclination or tilt of the work rolls 106 upwards or downwards.
  • the steering control actuators 110 A-C may be various suitable devices or mechanisms for adjusting the tilt or inclination of the work rolls 106 , including, but not limited to, the bearings, hydraulic cylinders, backup rolls, combinations thereof, or other suitable devices or mechanisms as desired.
  • each work roll 106 of a particular work stand e.g., the upper work roll 106 and the lower work roll 106 the work stand 104 A
  • the rolling mill 100 includes a steering control system 112 .
  • the steering control system 112 includes a plurality of controllers 114 A-C and a plurality of sensors 116 A-C, although the number of controllers 114 and/or sensors 116 illustrated in FIG. 1 should not be considered limiting on the disclosure.
  • the steering control system 112 need only include one controller and/or one sensor.
  • each controller 114 A-C and sensor 116 A-C are associated with a particular work stand 104 A-C, although they need not in other examples.
  • each work stand 104 A-C may have an associated sensor 116 A-C, but the steering control system 112 includes a single controller.
  • each work stand 104 A-C is illustrated associated with each work stand 104 A-C in FIG. 1
  • a plurality of sensors may be associated with each work stand 104 A-C such that a plurality of parameters may be measured during rolling of the metal substrate 102 as discussed below.
  • Each controller 114 A-C includes a processor and a memory and is operably connected to a corresponding sensor 116 A-C and a corresponding steering control actuator 110 A-C.
  • the memory is coupled to the processor and includes instructions executable by the processor to perform various functions discussed in detail below.
  • the sensors 116 A-C may be various devices or mechanisms suitable for measuring at least one parameter of the metal substrate 102 during rolling.
  • each of the sensors 116 A-C may be a tension meter that measures a tension in the metal substrate 102 , a temperature sensor that measures a temperature of the metal substrate 102 , a gauge or thickness meter that measures a thickness of the metal substrate 102 , a position sensor that measures a position of the metal substrate 102 relative to a centerline of one of the work stands (e.g., the halfway point across the width of the work stand, which is transverse to the processing direction 109 ), a flatness sensor that measures a flatness of the metal substrate 102 across the width of the metal substrate 102 , optical sensors, cameras, combinations thereof, or other suitable sensors as desired.
  • the sensors 116 may be provided at an interstand location between adjacent work stands, although they need not be in other embodiments.
  • the sensors 116 B-C are at interstand locations and the sensor 116 A is provided upstream from the work stand 104 A.
  • the sensors 116 A-C need not all be the same type of sensor and/or measure the same parameter, and in certain embodiments one sensor (e.g., the sensor 116 A) measures a first parameter (e.g., tension), and another sensor (e.g., the sensor 116 B) measures a second parameter (e.g., thickness).
  • the sensors 116 A-C are tension meters that detect the tension in the metal substrate 102 .
  • the steering control system 112 may include an exit sensor 118 after the last work stand (e.g., the work stand 104 C).
  • the exit sensor 118 may be various devices or mechanisms that may be similar to or different from the devices used as the sensors 116 A-C.
  • the exit sensor 118 is a flatness sensor that measures a flatness profile of the metal substrate 102 across the width of the metal substrate 102 .
  • the exit sensor 118 may be operably connected to one or more of the controllers 114 A-C or to another controller that is operably connected to another piece of processing equipment (e.g., a controller for sprayers of a coolant distribution system).
  • the steering control system 112 may be a feed-forward control system, meaning that the parameter data gathered by a particular sensor may be used to control a work stand downstream from the particular sensor.
  • the sensor 116 A is upstream from the work stand 104 A, and the controller 114 A uses the data from the sensor 116 A to control the work stand 104 A.
  • the steering control system 112 may be a feedback control system, and the parameter data gathered by a particular sensor 116 may be used to control a work stand upstream from the particular sensor 116 .
  • FIG. 1 the sensor 116 A is upstream from the work stand 104 A
  • the controller 114 A uses the data from the sensor 116 A to control the work stand 104 A.
  • the steering control system 112 may be a feedback control system, and the parameter data gathered by a particular sensor 116 may be used to control a work stand upstream from the particular sensor 116 .
  • FIG. 1 the steering control system 112 may be a feed-forward control system, meaning that the parameter data gathered
  • the sensor 116 A is downstream from the work stand 104 A, and the controller 114 A uses the data from the sensor 116 A to control the work stand 104 A.
  • the steering control system 112 may be both a feed-forward and a feedback control system, and the parameter data gathered by a particular sensor may be used to control a work stand upstream from the particular sensor and a work stand downstream from the particular sensor.
  • the method 300 may be stored as instructions in one or more memories of one or more controllers 114 A-C of the steering control system 112 that may be executable by one or more processors of one or more controllers 114 A-C.
  • the method 300 includes generating a model for each work stand of the rolling mill.
  • block 302 includes generating a model of each of the work stands 104 A-C.
  • generating the model for each work stand of the rolling mill includes generating the model based on setup data, which may include, but is not limited to, one or more measured parameters, one or more input parameters, combinations thereof, and/or other data as desired.
  • the setup data includes both measured parameters and input parameters.
  • the measured parameters may be obtained using one or more sensors that measure a parameter of the metal substrate during the current rolling operation or during a previous rolling operation.
  • a measured parameter may be measured with one or more sensors including, but not limited to, tension meters, gauge meters, flatness rolls, optical sensors, cameras, temperature sensors, combinations thereof, or other sensors as desired.
  • the measured parameter(s) may include, but is not limited to, a tension in the metal substrate, a chemistry and/or composition of the metal substrate, a chemistry or composition of the metal substrate, a temperature of the metal substrate, combinations thereof, or other parameters as desired.
  • the setup data used to generate the model for a work stand may include a tension in the metal strip measured by a tension meter during a prior rolling operation, a thickness of the metal substrate measured by a gauge meter during a prior rolling operation, and a temperature of the metal substrate measured by a temperature sensor during a prior rolling operation.
  • the input parameter may be other parameters as desired that may not necessarily be measured by a sensor.
  • the input parameter may include, but is not limited to, a width of the metal substrate, a chemistry or composition of the metal substrate, and/or a thickness of the metal substrate.
  • the model is generated for each work stand.
  • Generating the model includes generating an adjustment value for the particular work stand based on the setup data.
  • the adjustment value is a correction value indicative of the actual efficiency of the work stand or deviation of the actual performance of the work stand compared to expected performance.
  • the method 300 includes receiving a measured parameter from one or more sensors about the metal substrate during rolling.
  • block 304 includes receiving the measured parameter from an immediately upstream sensor and/or an immediately downstream sensor.
  • block 304 includes receiving the measured parameter from each sensor 116 A-C that is upstream from a particular work stand 104 A-C
  • block 304 includes receiving the measured parameter from each sensor 116 A-B that is downstream from a particular work stand 104 A-B.
  • the sensors that measure a particular parameter during rolling may be various sensors as desired, including, but not limited to, a tension meter, a temperature sensor, a gauge or thickness meter, a position sensor, a flatness sensor, an optical sensor, combinations thereof, or other suitable sensors as desired.
  • block 304 includes receiving a plurality of measured parameters from a plurality of sensors for a particular work stand of the rolling mill.
  • the method 300 includes determining an expected output parameter and comparing the expected output parameter to a target output parameter.
  • determining the expected output parameter includes modifying the measured parameter by the adjustment value determined in block 302 .
  • modifying the measured parameter by the adjustment value may more accurately predict an output for the particular work stand because the adjustment value is based on the actual efficiency of the work stand (e.g., based on the setup data).
  • the method 300 includes generating a control response based on the comparison between the expected output parameter and the target output parameter.
  • block 308 includes actuating a steering control actuator for the work stand such that the expected output parameter determined in block 306 is within a predetermined tolerance of the target output parameter.
  • generating the control response and actuating the steering control actuator may include sending a control to the steering control actuator to control an inclination or tilt of one or more work rolls of the particular work stand.
  • block 308 may include actuating a backup roll, a hydraulic cylinder, a bearing, combinations thereof, or other suitable steering control actuators as desired.
  • the method 300 may include receiving a measured parameter from the exit sensor 118 downstream from the last work stand, determining an expected exit parameter based on the measured parameter from the exit sensor 118 and the adjustment value, and actuating the steering control actuator such that the expected exit parameter is within a predetermined tolerance of a target exit parameter.
  • the exit sensor 118 may be a flatness sensor that measures a flatness profile across a width of the metal substrate, and the measured flatness profile may be used to actuate the steering control actuator such that an expected flatness profile is within a predetermined tolerance of a target flatness profile.
  • block 302 may include generating a model for a work stand such as the work stand 104 A, and block 304 includes receiving a measured thickness of the metal substrate 102 from the sensor 116 A (e.g., in this example, the sensor 116 A is a gauge or thickness sensor).
  • block 306 may include comparing an expected output thickness from the work stand 104 A to a target output thickness from the work stand 104 A.
  • Block 308 may include actuating the steering control actuator 110 A and controlling the inclination or tilt of the work roll(s) 106 of the work stand 104 A such that the expected output thickness is within a predetermined tolerance of the target output thickness.
  • block 302 may include generating a model for a work stand such as the work stand 104 A, and block 304 includes receiving a measured flatness profile across the width of the metal substrate 102 from the sensor 116 A (e.g., in this example, the sensor 116 A is a flatness sensor).
  • block 306 may include comparing an expected output flatness profile from the work stand 104 A to a target output flatness profile from the work stand 104 A.
  • Block 308 may include actuating the steering control actuator 110 A and controlling the inclination or tilt of the work roll(s) 106 of the work stand 104 A such that the expected output flatness profile is within a predetermined tolerance of the target output flatness profile.
  • block 302 may include generating a model for a work stand such as the work stand 104 A, and block 304 includes receiving a measured position of the metal substrate 102 relative to a centerline of the work stand 104 A (e.g., a measurement of whether the metal substrate 102 is substantially aligned with the centerline of the work stand 104 A, offset to the left, offset to the right, etc.).
  • the sensor 116 A is a position sensor.
  • Block 306 may include comparing an expected output position of the metal substrate 102 upon exiting the work stand 104 A to a target output position.
  • Block 308 may include actuating the steering control actuator 110 A and controlling the inclination or tilt of the work roll(s) 106 of the work stand 104 A such that the expected output position is within a predetermined tolerance of the target output position.
  • block 302 may include generating a model for a work stand such as the work stand 104 A, and block 304 includes receiving a measured tension in the metal substrate 102 from the sensor 116 A (e.g., in this example, the sensor 116 A is a tension meter).
  • block 306 may include comparing an expected output tension from the work stand 104 A to a target output tension from the work stand 104 A.
  • Block 308 may include actuating the steering control actuator 110 A and controlling the inclination or tilt of the work roll(s) 106 of the work stand 104 A such that the expected output tension is within a predetermined tolerance of the target output tension.
  • more than one parameter may be used for generating the model and/or subsequent control of the work stand using the steering control system 112 .
  • Illustration 1 A method for controlling roll steering during rolling of a metal substrate, the method comprising: generating a model for a work stand of a rolling mill based on setup data, wherein generating the model comprises determining an adjustment value for the work stand; receiving a measured parameter about the metal substrate at a location upstream from the work stand from a sensor; determining an expected output parameter for the work stand by modifying the measured parameter by the adjustment value; comparing the expected output parameter with a target output parameter for the work stand; and actuating a steering control actuator for the work stand such that the expected output parameter is within a predetermined tolerance of the target output parameter, wherein the steering control actuator is adapted to control an inclination of at least one work roll of the work stand relative to a pass line of the metal substrate.
  • Illustration 2 The method of any preceding or subsequent illustrations or combination of illustrations, wherein the measured parameter comprises a measured thickness, wherein the expected output parameter is an expected output thickness, and wherein the target output parameter is a target output thickness.
  • Illustration 3 The method of any preceding or subsequent illustrations or combination of illustrations, wherein the measured parameter comprises a measured flatness profile across a width of the metal substrate, wherein the expected output parameter is an expected output flatness profile, and wherein the target output parameter is a target output flatness profile.
  • Illustration 4 The method of any preceding or subsequent illustrations or combination of illustrations, wherein the measured parameter comprises a measured position of the metal substrate relative to a centerline of the work stand, wherein the expected output parameter is an expected output position, and wherein the target output parameter is a target output position.
  • Illustration 5 The method of any preceding or subsequent illustrations or combination of illustrations, wherein the work stand is a first work stand of a plurality of work stands, and wherein the method comprises generating a model for each work stand of the plurality of work stands based on setup data for each work stand.
  • Illustration 6 The method of any preceding or subsequent illustrations or combination of illustrations, wherein actuating the steering control actuator comprises controlling at least one hydraulic cylinder or at least one backup roll.
  • Illustration 7 The method of any preceding or subsequent illustrations or combination of illustrations, wherein the measured parameter comprises a tension in the metal substrate, wherein the expected output parameter is an expected tension, and wherein the target output parameter is a target tension.
  • Illustration 8 The method of any preceding or subsequent illustrations or combination of illustrations, wherein generating the model for the work stand comprises generating the model prior to rolling of the metal substrate, and wherein the setup data comprises data from a prior rolling operation.
  • Illustration 9 The method of any preceding or subsequent illustrations or combination of illustrations, further comprising: receiving a measured thickness about the metal substrate at a location after a last work stand of the rolling mill from a sensor; determining an expected thickness for the work stand by modifying the measured thickness by the adjustment value; comparing the expected thickness with a target thickness for the work stand; and actuating the steering control actuator for the work stand such that the expected thickness is within a predetermined tolerance of the target thickness.
  • Illustration 10 The method of any preceding or subsequent illustrations or combination of illustrations, wherein the work stand is a first work stand and the rolling mill further comprises a second work stand upstream from the first work stand, wherein the sensor is between the first work stand and the second work stand, and wherein the method further comprises: generating a model for the second work stand based on setup data, wherein generating the model for the second work stand comprises determining an adjustment value for the second work stand; and after rolling the metal substrate, updating the model for the second work stand by updating the adjustment value based on the measured parameter of the metal substrate during rolling from the sensor being outside the a predetermined tolerance of a target output parameter for the second work stand.
  • a rolling mill comprising a steering control system, the steering control system comprising: a steering control actuator adapted to control an inclination of a work roll of a work stand of the rolling mill; a sensor configured to measure a parameter of a metal substrate upstream from the work stand; and a controller operably connected with the steering control actuator and the sensor, wherein the controller comprises a processor and a memory coupled to the processor, wherein the memory comprises instructions executable by the processor for: generating a model for the work stand and determining an adjustment value for the work stand; receiving the measured parameter from the sensor; determining an expected output parameter by adjusting the measured parameter by the adjustment value; comparing the expected output parameter with a target output parameter; and actuating the steering control actuator such that the expected output parameter is within a predefined tolerance of the target parameter.
  • Illustration 12 The rolling mill of any preceding or subsequent illustrations or combination of illustrations, further comprising the work stand and the work roll, wherein the work roll comprises an upper work roll or a lower work roll adapted to contact the metal substrate during rolling.
  • Illustration 13 The rolling mill of any preceding or subsequent illustrations or combination of illustrations, wherein the work stand is a first work stand of a plurality of work stands, and wherein the memory comprises instructions executable by the processor for generating a model for each work stand of the plurality of work stands based on setup data for each work stand.
  • Illustration 14 The rolling mill of any preceding or subsequent illustrations or combination of illustrations, wherein the measured parameter comprises a measured thickness, wherein the expected output parameter is an expected output thickness, and wherein the target output parameter is a target output thickness.
  • Illustration 15 The rolling mill of any preceding or subsequent illustrations or combination of illustrations, wherein the measured parameter comprises a measured flatness profile across a width of the metal substrate, wherein the expected output parameter is an expected output flatness profile, and wherein the target output parameter is a target output flatness profile.
  • Illustration 16 The rolling mill of any preceding or subsequent illustrations or combination of illustrations, wherein the measured parameter comprises a measured position of the metal substrate relative to a centerline of the work stand, wherein the expected output parameter is an expected output position, and wherein the target output parameter is a target output position.
  • Illustration 17 The rolling mill of any preceding or subsequent illustrations or combination of illustrations, wherein the steering control actuator comprises controlling at least one hydraulic cylinder or at least one backup roll.
  • Illustration 18 A steering control system for a rolling mill, the steering control system comprising: at least one processor; a memory coupled to the processor, wherein the memory comprises a plurality of instructions executable by the processor for: generating a model for a work stand and determining an adjustment value for the work stand; receiving a measured parameter about a metal substrate from a sensor upstream from the work stand, determining an expected output parameter by adjusting the measured parameter by the adjustment value; comparing the expected output parameter with a target output parameter, and generating a control response based on the expected output parameter being outside of a predefined tolerance of the target parameter.
  • Illustration 19 The steering control system of any preceding or subsequent illustrations or combination of illustrations, wherein the processor is configured to generate the control response by actuating a steering control actuator of the work stand to control an inclination of a work roll of a work stand of the rolling mill.
  • Illustration 20 The steering control system of any preceding or subsequent illustrations or combination of illustrations, wherein the measured parameter comprises at least one of a thickness of the metal substrate, a flatness of the metal substrate, or a position of the metal substrate relative to a centerline of the rolling mill.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
US18/555,576 2021-04-20 2022-03-28 Roll steering control systems and methods for tandem mills Pending US20240198402A1 (en)

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