EP2620233A1 - Verfahren zur Bearbeitung von Walzgut in einem Warmwalzwerk - Google Patents

Verfahren zur Bearbeitung von Walzgut in einem Warmwalzwerk Download PDF

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Publication number
EP2620233A1
EP2620233A1 EP12152284.1A EP12152284A EP2620233A1 EP 2620233 A1 EP2620233 A1 EP 2620233A1 EP 12152284 A EP12152284 A EP 12152284A EP 2620233 A1 EP2620233 A1 EP 2620233A1
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EP
European Patent Office
Prior art keywords
rolling
rolling stock
stand
speeds
speed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP12152284.1A
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German (de)
English (en)
French (fr)
Inventor
Hans-Joachim Felkl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to EP12152284.1A priority Critical patent/EP2620233A1/de
Priority to PCT/EP2012/075152 priority patent/WO2013110399A1/de
Priority to CN201280067802.3A priority patent/CN104066523B/zh
Priority to EP12805668.6A priority patent/EP2790846B1/de
Priority to BR112014017948A priority patent/BR112014017948A8/pt
Publication of EP2620233A1 publication Critical patent/EP2620233A1/de
Withdrawn legal-status Critical Current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
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • 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
    • B21B37/46—Roll speed or drive motor control

Definitions

  • the invention relates to a method for processing rolling stock in a hot rolling mill with a rolling train with at least two successive rolling stands.
  • a rolling stock e.g. Steel or various metals in the form of so-called slabs or cast strands, heated in an oven to a temperature above the respective recrystallization temperature.
  • the hot slab goes through a rolling mill with several rolling stands in which it is rolled in several passes to tapes or plates. For each pass, the rolling stock is to be rolled to a specific target thickness.
  • the roll gaps on the rolling stands must be suitably adjusted. This is done with the help of Anstellsystemen, which usually adjust the upper set of rolls with respect to the pass line of the rolling mill.
  • the adjustment systems are e.g. operated with hydraulic cylinders or electromechanical screws or a combination of both.
  • the nominal values for the roll nip are usually specified from a pass schedule, which is calculated from a model of the rolling train or selected from a list.
  • a pass schedule which is calculated from a model of the rolling train or selected from a list.
  • the roll gaps are set to the corresponding set values.
  • a load roll gap controller calculates the current roll gap taking into account the position of the positioning system, the forces and the framework parameters. If the current gap and target value of the roll gap deviate from one another, the load roll gap controller regulates the roll gap and thus the rolling stock thickness on the basis of its framework model.
  • An improved way to control the roll gap is to use a mass flow controller.
  • the default setting of the roll gap is as above based on a stitch plan.
  • the rolling stock with a certain inlet side Walzgut Malawi V i-1 and inlet side Walzgutdicke h i-1 leaves the mill with an outlet side Naizgut philosophical V i and outlet side slab thickness h i .
  • the current outlet side rolling stock thickness can be determined.
  • the calculated outlet side rolling stock thickness is then controlled by the mass flow controller to its target thickness, a target outlet thickness h i, target .
  • the mass flow controller acts on the Anstellsystem of the respective rolling mill and thus replaced in principle the Lastwalzspaltspaltregler, which can be maintained in addition.
  • the inlet-side rolling stock thickness h 0 on the first rolling stand is determined from a known initial value, for example a thickness measurement in the roughing mill or from a constant value in a slab.
  • a renewed thickness measurement can be carried out or the outlet side rolling stock thickness of the preceding rolling stand can be used.
  • the measurement of the rolling stock speeds V i can take place, for example, via a direct measurement on the rolling stock with a rolling stock speed measuring device. In this case, it is measured with which speed the rolling stock passes a fixed location or a checkpoint of the rolling train. For this purpose, for example, laser or pulser on rollers with WalzgutAuth known. Another possibility would be to determine the speed over the time that a certain Naizgutabites, eg the head of the rolling stock, for covering a specified distance, eg between two rolling stands, needed.
  • the object of the invention is to provide an improved method for processing rolling stock in a hot rolling mill, in which the above-mentioned disadvantages are avoided.
  • outgoing side target thickness h i of the rolling stock for each rolling stand W i are specified.
  • These setpoint values for the outlet side rolling stock thicknesses h i, Soll are determined on the basis of a model formed for the machining process in the hot rolling mill or taken from a pass plan or a list.
  • a second step b) setpoint values for the outlet-side rolling stock speeds v i, Soll are determined in accordance with the mass flow law from the outlet-side target thicknesses h i . This is done again with the help of a model or a stitch plan.
  • a model value for the overfeed s i is selected in step c).
  • the modeled lead s i should simulate the real lead as accurately as possible and is calculated by a model of the rolling mill or taken from a list.
  • setpoint values for the roll speeds v Wi, Soll are determined from the model value of the overfeed s i and the setpoint values of the outflow-side rolling stock speeds v i, setpoint.
  • the roller speeds v Wi are adjusted to the setpoint values for the roller speeds v Wi, Soll . This results in the desired outlet side rolling speeds v i, Soll .
  • the rolling stock is to be rolled to a certain target thickness h i .
  • a target thickness h i is specified after the last rolling stand W i and based on a model, the remaining target thicknesses h i , namely those of the individual rolling stands W i of the rolling train, are determined and thus likewise predetermined.
  • the target thickness h i is therefore to be understood as the thickness with which the rolling stock is to leave the rolling stand W i .
  • the associated outlet-side rolling material velocities V i are also modeled on the basis of a model, and target values for the outlet-side rolling material velocities v i, set are determined.
  • the basis for these model-based calculations is the mass flow law.
  • the associated overfeed s i is also determined on the basis of a model in such a way that it corresponds as exactly as possible to the real overfeed.
  • the lead s i is very low, experience shows that it is in the single-digit percentage range, and therefore has only a small influence on the ratio of outlet-side rolling speed v i and roller speed v Wi according to the above formula. It is therefore sufficient to set the lead s i at the beginning of the rolling process based on a model to a value or to take a list.
  • setpoint values for the roll speeds v Wi, setpoint are now determined according to the above formula.
  • the roller speeds v Wi are then adjusted to the setpoint values for the roller speeds v Wi, Soll .
  • these setpoint values for the roll speeds v Wi, Soll are actually set at the respective rolling stands W i and rolls. This is done via pulse generators on the rolling drives.
  • roller speeds v Wi via pulser on the rolling drives with high accuracy.
  • the roller speeds v Wi can also be measured and regulated much more simply and accurately.
  • the outlet-side rolling material velocities v i remain approximately constant and the resulting according to mass flow law target thickness h i are therefore subject to lower fluctuations.
  • the roll speeds v Wi are set on the basis of model-based calculated setpoint values for the roll speeds v Wi, Soll , which in turn are calculated via an also model-based determined lead s i , it is not necessary to measure the rolling stock speeds v i , which is sometimes shows as problematic.
  • a mass flow controller is used, which from the measured values for the inlet side rolling stock speed v 0, M , the inlet side rolling stock h 0, M and the roller speed v W1 of the first rolling stand W 1 using the lead S 1, the target thickness h 1 sets.
  • a mass flow controller is used on each roll stand, which from the inlet side rolling stock speed v i-1 , the inlet side rolling stock h i-1 and the roller speed v Wi of the rolling stand W i using the lead s i the target thickness h i adjusts.
  • These mass flow controllers act on the positioning system and the roller speed v Wi of the respective rolling stand W i .
  • target thickness errors ⁇ h i comprising rolling stock sections are detected, puncturing times T i + 1 of the rolling stock sections in the rolling stand W i + 1 determined and at time T i + 1, the roller speed V Wi of the roll stand W i adjusted so that according to the mass flow law in the rolling stand W i + 1, the target thickness h i + 1 sets.
  • the roller speed v Wi of the preceding rolling stand W i is then changed to restore the validity of the mass flow law at the rolling stand W i + 1 . If a rolling stock section is too thick, the roller speed v Wi of the preceding rolling stand W i is reduced, and if the rolling section is too thin, it is increased. Thus, thickness errors of the rolling stock can be pre-controlled and corrected quickly. This leads to an improvement in the thickness quality, in particular in the extended head region of the rolling stock.
  • the head of the rolled material refers to the front end of the rolling stock as viewed in the direction of movement.
  • the model value for the lead s i is set constant. As already described above, a change in the lead s i has only a small influence on the roll speed v Wi . It is therefore in the simplest case sufficient to calculate the lead s i on the basis of the model or to extract a list and to maintain this value during the entire machining process.
  • the roll speeds v Wi are then set only at the beginning of the milling process on the basis of the model calculated setpoint values for the roll speeds v Wi, Soll .
  • the overfeed s i is model-adapted during the entire processing. For this, additional variables, such as measured values determined during the rolling process, are input into the model. As a result, it is constantly being updated and the overfeed s i determined on the basis of the repeatedly adapted model is thus steadily refined or better adapted to the real overfeed.
  • the correction value is determined here on the basis of a measured value during the rolling process.
  • the predetermined overfeed in the form of the basic value is corrected or fine-tuned on the basis of measurements - ie in the form of the correction value - and more closely approximated to the actually existing overfeed s i .
  • This allows the determination of a constantly updated override factor.
  • the lead is thus improved by adaptively adapting a standard value based on the measured values.
  • a corrected overfeed For example, a correction value is determined per rolling cycle in order to be used for subsequent, for example, similar rolling operations. Also in the next rolling process, a new correction value is then determined, which can then be used for the next but one rolling process.
  • a continuous optimization and tracking of the accuracy of the advance is achieved. This has a direct effect on the accuracy of the determined roller speed v Wi and thus on the outlet side rolling speeds v i and target thickness h i .
  • the overfeed s i during the processing of the rolling stock is constantly updated on the basis of the measured value of the rolling stock speed v i, M.
  • a rolling stock speed measurement v i, M behind a rolling stand W i is determined using known measuring methods.
  • This measured rolling stock speed V i, M is measured together with the lead determined according to the invention s i processed in a further correction value S Ki and a further corrected overrun s i determining control device with a Voreilungsadaptionsregler.
  • a certain weighting between the measured value and the advance value can be selected.
  • a rolling material speed measured after the rolling stand or between rolling stands is used by the advance adaptation controller.
  • the use is made to increase the robustness of the mass flow control only indirectly, namely on the roller speed v Wi together with the inventively determined lead s i in the control device.
  • roller speed measurement via the pulser on the roller drives forms the dynamic components, e.g. Acceleration of the rolling train, speed changes due to speed corrections of the controls or load actions, robust.
  • the desired roller speed v Wi, setpoint is predetermined via the modeled and overrun tracking control factor such that the desired outflow-side rolling stock speed is set behind each rolling stand.
  • the rolling stock speed control receives the high dynamics of the roller speed control.
  • the conversion of the rolling stock to the roll speed takes place via an overfeed, which is modeled and adapted by means of a reading-filtering control.
  • the measured actual advance or advance rate determined by the advance or advance adaption controller is a direct indication of the modeling quality of the overfeed and can therefore be used ideally for adapting the process models.
  • the adaptation of the modeled advance may be limited in the controller is also simple: For example, that the value of the advance will be frozen at a known faulty measurement of the rolling stock of ascertained by Voreilungsregler correction value for the advance S Ki retained and is not adjusted. This allows undisturbed further rolling in the event of incorrect measurement of the rolling stock speed, in which the overfeed adaptation controller is frozen, ie the overfeed factor which prevails at the time of the incorrect measurement is not further corrected, but is constantly used further. This can be done, for example, until a valid measured value is measured again. The adjustment of the lead can then be continued to obtain even more accurate lead values.
  • the expansion of the rolling stock is taken into account in the determination of the rolling stock speeds V i and the roll speeds v wi .
  • the ratio of inlet width B i-1 of the rolling stock to outlet side width B i of the rolling stock has an influence on the target thickness h i of the respective rolling stand.
  • the target thickness h i and the ratio of the inlet side preparation B i-1 of the rolling stock to the outlet-side widening B i of the rolling stock are proportional to one another: H i ⁇ B i - 1 B i
  • a strip tension regulator is arranged, which controls the strip tension Z i-1, i between two rolling stands on the setting of the roll nips.
  • the strip tension Z i-1, i are detected and controlled by the Anstellsystem of each lying in the rolling direction roll stand W i . If the strip tension Z i-1, i, for example, too large, the nip of the following rolling stand W i is set narrower to increase the force acting on the rolling stock. If the strip tension Z i-1, i is too low, the nip is widened so that a smaller force acts. Without such a band tension control there is an increased risk that the rolling stock breaks, too large a strip tension, or form loops in the rolling stock when the strip tension is too low.
  • the strip tension or the rolling stock can be detected by means of loop lifters. These move in a position-controlled manner after painting the roll stand W i following in the rolling direction to a desired position above the pass line.
  • the strip or rolling load is calculated by the force with which the rolling stock presses on the respective position-controlled loop lifter.
  • Known methods are load cells or indirect calculations on the restoring forces of the sling lifter control. From the time when the loop lifter gets rolling contact, the Walzgutzugregelung is active on the Anstellsystem of rolling mill W i lying in the rolling direction.
  • Advantageous in the use of loop lifters for the detection of strip tension is that these are already present in the rolling mill and only position-controlled with a fixed angle, ie static and not dynamic, must be operated.
  • the elaborate loop lifter may be replaced with a simpler pull metering roller which may be used to load the rolling stock, e.g. recorded via integrated load cells.
  • the tension measuring roller is advantageously designed to be retractable: For threading, it lies in an end position below the pass line. After piercing the stand in rolling stock direction, it is moved over the pass line so far that a sufficient wrap angle for the rolling load measurement is ensured. In comparison to the loop lifter, the detection of the strip tension can be realized more cost-effectively with a tension measuring roller.
  • Fig. 1 shows a section of a hot rolling mill 2 with a rolling mill 3 with any number of successive rolling stands W i and rollers 4 for machining the rolling stock 6.
  • Fig. 1 By way of example, three successive rolling stands W i , W 2 and W 3 are shown, which each have two rolls 4 exhibit.
  • the rolling stock 6 here in the form of a slab, with an inlet-side Walzgutdicke h i-1 and an inlet side Walzgut mecanic v i-1 , and leaves this with a outlet-side Walzgutdicke h i and an outlet-side Walzgut york v i .
  • the rolling stock 6 is fed to the first rolling stand W 1 with an inlet-side rolling stock thickness h 0 and an entry-side rolling stock speed v 0 .
  • the rolling stock 6 is to be rolled to a predetermined outlet-side target thickness h i , in the case of the first rolling stand W 1 to a target thickness h 1 . From these outlet-side target thicknesses h i , outlet-side rolling-material velocities v i, desired values for each rolling stand are determined in accordance with the mass flow law. According to the in Fig.
  • a model value for the overfeed s i is selected.
  • this model value is taken from a list or chosen on the basis of a rolling model and remains constant during the entire milling process.
  • Fig. 1 is for each rolling mill W 1, W 2 and W 3 as a model value for the advance, the same value s i s selected and maintained this constant throughout the rolling process.
  • Another possibility is model-based adaptation of the model value for the overfeed during the rolling process, wherein the modeled overfeed s i is derived from a basic value S Gi , for example taken from a list or a rolling model, and a correction value S Ki , which is determined on the basis of a measured value is composed.
  • the predetermined lead S Gi is in this case based on measurements - that is, in the form of the correction value S Ki - corrected or fine tuned and more approximate to the actually existing overfeed s i.
  • the accuracy can be further increased by constantly tracking this modeled overfeed s i during the processing of the rolling stock 6 on the basis of the measured value of the rolling stock speed v i, M.
  • the measured value for the rolling stock speed v i, M is determined using a suitable measuring device 18.
  • model-based setpoint values for the roll speeds v Wi, Soll based on the three illustrated rolling stands W 1 , W 2 and W, are now model-based 3 setpoint values for the roll speeds v W1, setpoint v W2, setpoint and v W3, setpoint .
  • the rollers 4 of a rolling stand W i rotate at a roller speed v Wi .
  • the roller speed v Wi is set via a rolling drive 8.
  • the rolls 4 of the rolling stands W 1 , W 2 and W 3 are here adjusted to the setpoint values for the roll speeds v W1, Soll , v W2, Soll and v W3, Soll .
  • the outlet side Walzgut philosophicalen v 1, Soll , v 2, Soll and v 3 target and thus the outlet side target thicknesses h 1 , h 2 and h 3 with great accuracy.
  • the first rolling stand W 1 is associated with a mass flow controller 10.
  • a mass flow controller 10 During the rolling process, measured values for the entry-side rolling stock speed v 0, M and the inlet-side rolling stock thickness h 0, M of the first rolling stand W 1 are recorded. From these measured values and the roll speed v W1 of the first roll stand W 1 , the mass flow controller 10 sets the target thickness h 1 using the lead S 1 .
  • the mass flow controller 10 controls via a Anstellsystem 12 of Rolling 4 and the first stand W 1, the setting of the variable roll gap.
  • such a mass flow regulator 10 (not shown here ) can also be used on the rolling stands W 2 and W 3 .
  • a strip tension regulator 14 is further arranged, which controls the strip tension Z i-1 , i between the two rolling stands W i-1 , W i via the setting of the roll nips.
  • a strip tension regulator 14 is arranged both between the rolling stands W 1 and W 2 and between the rolling stands W 2 , W 3, which sets the strip tension Z 1,2 or Z 2,3 via the setting of the rolling gaps of the rolling stands W 2 and W, respectively 3 regulates.
  • the strip tension is detected in the illustrated embodiment via a loop 16, which is operated position-controlled at a fixed angle.
  • a loop lifter 16 and a Switzerlandmessrolle - not shown - are used.
  • the strip tension Z i-1, i is calculated by means of the respective force F with which the rolling stock 6 presses on the loop lifter 16.
  • the strip tension regulator 14 regulates the strip tension Z i - 1, i via the positioning system 12 of the rolling stand W i lying in the rolling direction.
  • a rolling stock section 6 ' is shown which, after the first rolling stand W 1, has a target thickness error ⁇ h 1 , in this case a rolling stock section 6' to be thick-shown here by a hatched area.
  • the roller speed v W1 of the first rolling stand W 1 is reduced to such an extent that the correct target thickness h 2 is established in the rolling stand W 2 according to the mass flow law.
  • FIG. 2 shows a schematic representation of a control device 20 for controlling the rolling stock speed v i over the roller speed v Wi by means of which a continuous tracking of the modeled overfeed s i takes place.
  • the overshoot is thus determined by adaptive adaptation of the overfeed s i on the basis of further measured values, in accordance with FIG Fig. 2 tracked by means of measured values of the rolling stock speed v i, M.
  • This Walzgut Anthonysmesswert v i, M is determined with a measuring device 18 behind a rolling stand W i .
  • This control device 20 comprises an overfeed adaptation controller 22 and a limitation and plausibility check stage 24.
  • an actual outflow-side rolling material speed v i, M is measured with the aid of a measuring device 18.
  • These outlet-side rolling-material velocities v i, M which are actually measured behind a rolling stand W i , as well as the setpoint value for the outlet-side rolling-material velocity v i, Soll, are supplied to the advance-adaptation controller 22. From these quantities, a correction value for the lead S Ki is determined.
  • this correction value for the advance S Ki is supplied together with the basic value of the lead S Gi to a limitation and plausiblization stage 24.
  • the model-based adjusted lead s i by the lead adaptation controller 22 and the Limitation and plausibility stage 24 again fine-tuned, in contrast, under certain circumstances, again to produce a better adapted modeled lead s i .
  • This better adapted modeled lead s i is again used in the model for determining the setpoint values for the roll speeds v Wi, Soll , which are subsequently adjusted via the rolling drives.
  • the outlet-side target thickness h i also adjust with increasing accuracy.
  • a certain weighting between the measured value in this case the rolling stock measured value v i, M , and the override value s i can be selected.
  • a rolling material speed measured after the rolling stand W i or between rolling stands is used by the regulating device 20.
  • the use is, however, to increase the robustness of the mass flow control only indirectly, namely together with the inventively determined overfeed s i in the control device 20th

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Laminated Bodies (AREA)
EP12152284.1A 2012-01-24 2012-01-24 Verfahren zur Bearbeitung von Walzgut in einem Warmwalzwerk Withdrawn EP2620233A1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP12152284.1A EP2620233A1 (de) 2012-01-24 2012-01-24 Verfahren zur Bearbeitung von Walzgut in einem Warmwalzwerk
PCT/EP2012/075152 WO2013110399A1 (de) 2012-01-24 2012-12-12 Verfahren zur bearbeitung von walzgut in einem warmwalzwerk
CN201280067802.3A CN104066523B (zh) 2012-01-24 2012-12-12 用于在热轧车间中加工轧件的方法
EP12805668.6A EP2790846B1 (de) 2012-01-24 2012-12-12 Verfahren zur bearbeitung von walzgut in einem warmwalzwerk
BR112014017948A BR112014017948A8 (pt) 2012-01-24 2012-12-12 Método para processamento de material de laminação em um laminador a quente

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12152284.1A EP2620233A1 (de) 2012-01-24 2012-01-24 Verfahren zur Bearbeitung von Walzgut in einem Warmwalzwerk

Publications (1)

Publication Number Publication Date
EP2620233A1 true EP2620233A1 (de) 2013-07-31

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EP12152284.1A Withdrawn EP2620233A1 (de) 2012-01-24 2012-01-24 Verfahren zur Bearbeitung von Walzgut in einem Warmwalzwerk
EP12805668.6A Active EP2790846B1 (de) 2012-01-24 2012-12-12 Verfahren zur bearbeitung von walzgut in einem warmwalzwerk

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EP12805668.6A Active EP2790846B1 (de) 2012-01-24 2012-12-12 Verfahren zur bearbeitung von walzgut in einem warmwalzwerk

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EP (2) EP2620233A1 (cs)
CN (1) CN104066523B (cs)
BR (1) BR112014017948A8 (cs)
WO (1) WO2013110399A1 (cs)

Cited By (4)

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EP3208673A1 (de) * 2016-02-22 2017-08-23 Primetals Technologies Austria GmbH Inline-kalibrierung des walzspalts eines walzgerüsts
US20190039107A1 (en) * 2017-08-01 2019-02-07 Sms Group Gmbh Mass flow regulation in roller devices
WO2022152779A1 (de) 2021-01-18 2022-07-21 Primetals Technologies Germany Gmbh Verringerung von zugbedingten dickenänderungen beim walzen
CN118847718A (zh) * 2024-05-21 2024-10-29 新余钢铁股份有限公司 基于轧制速度的板坯翘扣头控制方法及系统

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CN105600554B (zh) * 2015-10-16 2017-10-17 东北大学 一种带材运行轨迹显示方法和装置
CN109298707A (zh) * 2018-11-07 2019-02-01 华侨大学 一种Smith预估监控AGC系统的控制方法
CN109433831A (zh) * 2018-12-14 2019-03-08 武汉利杨科技有限公司 一种减少轧机工作辊磨损的速度匹配系统

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3208673A1 (de) * 2016-02-22 2017-08-23 Primetals Technologies Austria GmbH Inline-kalibrierung des walzspalts eines walzgerüsts
WO2017144226A1 (de) * 2016-02-22 2017-08-31 Primetals Technologies Austria GmbH Inline-kalibrierung des walzspalts eines walzgerüsts
CN108700866A (zh) * 2016-02-22 2018-10-23 首要金属科技奥地利有限责任公司 轧机机架的辊缝的在线校准
US11173529B2 (en) 2016-02-22 2021-11-16 Primetals Technologies Austria GmbH In-line calibration of the roll gap of a roll stand
US20190039107A1 (en) * 2017-08-01 2019-02-07 Sms Group Gmbh Mass flow regulation in roller devices
US10799924B2 (en) * 2017-08-01 2020-10-13 Sms Group Gmbh Mass flow regulation in roller devices
WO2022152779A1 (de) 2021-01-18 2022-07-21 Primetals Technologies Germany Gmbh Verringerung von zugbedingten dickenänderungen beim walzen
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CN118847718A (zh) * 2024-05-21 2024-10-29 新余钢铁股份有限公司 基于轧制速度的板坯翘扣头控制方法及系统

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EP2790846B1 (de) 2016-03-09
BR112014017948A2 (cs) 2017-06-20
EP2790846A1 (de) 2014-10-22
WO2013110399A1 (de) 2013-08-01
BR112014017948A8 (pt) 2017-07-11
CN104066523B (zh) 2016-08-31

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