EP3362199B2 - Verfahren zum walzen eines walzguts und walzwerk - Google Patents

Verfahren zum walzen eines walzguts und walzwerk Download PDF

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Publication number
EP3362199B2
EP3362199B2 EP16778843.9A EP16778843A EP3362199B2 EP 3362199 B2 EP3362199 B2 EP 3362199B2 EP 16778843 A EP16778843 A EP 16778843A EP 3362199 B2 EP3362199 B2 EP 3362199B2
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EP
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Prior art keywords
rolling
rotational speed
roll
control
rolling material
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EP16778843.9A
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German (de)
English (en)
French (fr)
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EP3362199B1 (de
EP3362199A1 (de
Inventor
Christian Mengel
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SMS Group GmbH
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SMS Group GmbH
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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
    • B21B37/46—Roll speed or drive motor 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
    • B21B37/72—Rear end control; Front end control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2275/00—Mill drive parameters
    • B21B2275/02—Speed
    • B21B2275/04—Roll speed

Definitions

  • the invention relates to a method for rolling a rolling stock in a rolling mill with at least one roll stand, wherein a gap height of a roll gap arranged between work rolls of the roll stand is set smaller than an entry thickness of the rolling stock before the rolling stock comes into contact with these work rolls, wherein at least one driven work roll of the the roll stand is operated at a target rotational speed after the rolling stock has reached the roll gap, and wherein the driven work roll is operated at a pilot rotational speed different from the target rotational speed until the rolling stock reaches the roll gap.
  • the invention also relates to a rolling mill for rolling a rolling stock, having at least one roll stand and at least one open-loop and/or closed-loop control unit that actuates the roll stand, the open-loop and/or closed-loop control electronics being set up to predict a gap height of a roll gap arranged between work rolls of the roll stand contact of the rolling stock with these work rolls smaller than an entry thickness of the rolling stock, to operate at least one driven work roll of the roll stand at a target rotational speed after the rolling stock has reached the roll gap and to operate the driven work roll at a pilot control rotational speed that deviates from the target rotational speed until Rolling stock reaches the roll gap.
  • the EP 2 796 217 A1 shows a method and a corresponding device for rolling a rolling stock in a rolling mill with at least one roll stand, wherein at least one driven work roll of the roll stand is operated at a target rotational speed after the rolling stock has reached the roll gap, and wherein the driven work roll at one of the target rotational speed deviating pilot control rotational speed is operated until the rolling stock reaches the roll gap.
  • Forming torque is applied by a work roll drive of the roll stand.
  • a work roll of a roll stand usually waits for the rolling stock at a rotational speed v 0 required for a stationary forming process. If the rolling stock enters a roll gap of the roll stand, the work roll drive of the roll stand takes over the forming moment. Due to the usual regulation of the rotational speed of the work rolls of the roll stand, a short-term reduction in the rotational speed of the work rolls occurs until the rotational speed control has set the required target rotational speed again. A build-up of material then occurs in front of the roll stand, which should be absorbed by built-in mass flow control and tension control. For this purpose, for example, tension measuring rolls or loopers are used, with the help of which control devices adjust the rotational speeds of the work rolls of adjacent roll stands until constant mass flow conditions and constant tension conditions are regained.
  • the drop in speed at the work rolls of a roll stand and thus the accumulated length of rolling stock in front of the roll stand depends on the speed controller settings (constant in normal operation) and on the rolling conditions and the required rolling torque.
  • the drop in speed is large and so is the required pre-control of the rotational speed of the work roll.
  • the difficulty of the train build-up aid is to precisely predict the magnitude of the rotational speed pre-control ⁇ v and the optimal time sequence.
  • a roll stand When tapping a rolling stock, a roll stand can be placed in front of the required tapping position, taking into account the expected rolling force, so that after the roll gap has been filled with the material of the incoming rolling stock and the rolling force has been built up, the desired exit thickness of the rolling stock is produced directly.
  • This opening of the roll stand from the advance position to the rolling position also leads to a contribution to the mass balance in the roll gap when the rolling stock is tapped and further accelerates the incoming material of the rolling stock.
  • This acceleration of the incoming rolling stock is superimposed on the deceleration of the work roll drive. In many cases the acceleration effect is secondary. However, there are also cases in which the drawing-in of the rolling stock material in dominates the roll gap or the acceleration effect and can be observed, for example in the first roll stand of CSP (Compact Strip Production) plants.
  • An application with particular relevance to the drawing-in conditions are new plant concepts for endless plants (coupled casting and rolling), in which large slab thicknesses of, for example, 70 mm to 160 mm thickness are to be cast and rolled out.
  • the slab head is moved through the open first roll stand of a rolling mill at the start of rolling in order to allow the slab head, which cannot be rolled out from the sprue due to unfavorable temperature conditions and cast-in dummy bar components, to pass through.
  • the first three roll stands of the rolling mill are then placed on the slab and closed to the required intermediate thickness within a few seconds. Due to the large thicknesses at the slab head, the material of the slab head cannot be rolled out to the desired target thickness or the wedge created in the process has to be separated and discharged in the subsequent process, which reduces the output of a continuous plant.
  • the slab head of a continuous slab is to be rolled directly in the first rolling stand of a multi-stand rolling mill.
  • the section of the slab head that cannot be rolled is cut off behind the casting machine in front of the first roll stand, for example by means of shears.
  • the first roll stand is then connected to the casting machine via the endless slab.
  • a tapping of a rolling stock in a roll stand is defined in such a way that the roll gap height before the rolling stock enters the roll gap is less than the entry thickness of the incoming endless slab.
  • the piercing at the slab head of the endless slab ensures that the required reduction in thickness is already set at the beginning of the slab and the cutting off of material or the creation of strip areas with transitional thicknesses is avoided, which increases the output of the endless plant.
  • One object of the invention is to reduce as far as possible tension changes and/or mass flow changes in a rolling stock entering a rolling stand while a rolling stock head of the rolling stock is tapping with the rolling stand.
  • a gap height of a roll gap arranged between work rolls of the roll stand is set smaller than an inlet thickness of the rolling stock before the rolling stock comes into contact with these work rolls, with at least one driven work roll of the roll stand having a target rotational speed is operated after the rolled stock has reached the roll gap, and wherein the driven work roll is operated at a different pilot rotational speed than the target rotational speed until the rolled stock reaches the roll gap.
  • the pilot control rotational speed is varied from the contact of the rolling stock with the driven work roll in such a way that the pilot control rotational speed increases or decreases monotonically, the pilot control rotational speed being specified in such a way that the monotonous course of the pilot control rotational speed changes over time within a roll gap filling time that starts with the contact of the rolling stock begins with the driven work roll and ends when the steady-state target rotational speed is reached.
  • the pre-control rotational speed of the driven work roll which deviates from the target rotational speed, is varied from the first contact of the rolling stock entering the roll stand with the work roll until the point in time at which the rolling stock has reached the roll gap.
  • the roll gap is understood to be the shortest distance between the driven work roll and a work roll that interacts with it. During this period, a rolled stock head of the rolled stock is already being deformed by the work rolls until the roll gap is filled with the rolled stock material, which is meant here by reaching the roll gap.
  • pilot control rotational speed is higher than the target rotational speed, the pilot control rotational speed is varied from the contact of the rolling stock with the driven work roll in such a way that the pilot control rotational speed decreases monotonically. If the pilot control rotational speed is lower than the target rotational speed, the pilot control rotational speed is varied from the contact of the rolling stock with the driven work roll in such a way that the pilot control rotational speed increases monotonically. As a result, largely reduced tension changes and/or mass flow changes in the area in front of the roll stand are generated, even when there is almost no tension.
  • a driven work roll of the first roll stand of a rolling mill can rotate slower or faster than the target rotational speed before or at the start of rolling.
  • the driven work rolls of the first three roll stands can rotate slower or faster than the setpoint rotational speed assigned to the respective roll stand before or at the start of rolling.
  • the driven work rolls of the first two rolling stands before or at the start of rolling can rotate slower or faster than the setpoint rotational speed associated with the respective rolling stand.
  • the inventive variation of the pilot control rotational speed from the first contact of the incoming rolling stock with the driven work roll can take place over a defined period of time, for example using a ramp function or another monotonically increasing or monotonically decreasing function.
  • the variation of the pilot control rotational speed thus begins with the first contact of the incoming rolling stock with the driven work roll.
  • the variation of the pilot control rotational speed is preferably adapted to the conditions in the roll gap. According to the invention, good compensation is achieved by adapting the period of variation of the pilot control rotational speed to the period that begins with the first contact between the incoming rolling stock and the driven work roll and ends when the rolling stock has reached the roll gap.
  • the variation of the pre-control rotational speed is selected in such a way that an expected length disturbance ⁇ l in front of the roll stand is compensated.
  • This length disturbance is made up of a constant component from the pull-in behavior of the rolling stock into the roll gap and a load-dependent, i.e. torque-dependent, component for the drop in rotational speed on the driven work roll and an opening of the preceding roll gap.
  • the compensation length results from the integral balancing of the area between the point in time at which the rolling stock comes into first contact with the driven work roll and the point in time at which the rolling stock reaches the roll gap or fills it, and the precontrol rotational speed specification relative to the value the target turning speed.
  • a negative speed pre-control in which the pre-control rotational speed is lower than the target rotational speed, can be used if the accumulation of rolling stock material in front of the roll gap or the roll stand is low due to a small drop in rotational speed with a small rolling torque.
  • a positive speed pre-control in which the pre-control rotational speed is higher than the target rotational speed, can be used if the drop in rotational speed is dominant with a large load torque.
  • a constant mass flow and a constant strip transport can be guaranteed during a tapping of the rolling stock in the roll stand, which is associated with a minimization of the reaction on a casting machine, which is connected upstream of the (first) roll stand of the rolling mill to form an endless system.
  • the length of the roll gap filling time is preferably selected to be greater than 50 ms.
  • the invention can be implemented with very little effort and does not require any additional space for alternative installations to maintain a constant mass flow, such as a loop accumulator to compensate for mass flow disturbances, which would have to be designed for a rolling stock thickness of up to 120 mm.
  • a loop accumulator to compensate for mass flow disturbances, which would have to be designed for a rolling stock thickness of up to 120 mm.
  • no increased scrap of material is generated, since the rolling stock, including its rolling stock head, is rolled completely.
  • the invention enables a reduction in the requirements for the speed of a mass flow control between a casting machine and the first rolling stand of a multi-stand rolling mill of an endless system, with the mass flow control being able to compensate for almost stationary conditions and being considerably relieved for the relatively quick tapping in the first rolling stand.
  • a rolling stock in the form of a slab, in particular an endless slab can be rolled.
  • the rolling mill can also have two or more roll stands. Since, according to the invention, the gap height of the roll gap arranged between work rolls of the roll stand before the rolling stock comes into contact with these work rolls is set to be smaller than an entry thickness of the rolling stock, the rolling stock is rolled from its rolling stock head and thus completely, which reduces material waste compared to systems in which the Rolled stock head is first guided through open roll stands and then separated from the rest of the rolling stock. Both work rolls of the roll stand that come into contact with the rolling stock can also be driven accordingly, in which case a speed of the respective work roll can be controlled and/or regulated according to the invention.
  • the setpoint rotational speed is adjusted to operation of the rolling stand after the rolling stock has been tapped under constant or stationary rolling conditions.
  • the contact of the rolling stock with the driven work roll and/or the rolling gap being reached by the rolling stock can be detected with a suitable sensor system.
  • at least one of these rolling states can be detected by detecting the rolling force currently present on the roll stand by assigning a previously determined rolling force value to the respective rolling state and comparing the currently detected rolling force value with the previously determined rolling force value.
  • the pilot control rotational speed is varied from the moment the rolling stock comes into contact with the driven work roll by means of a pilot control function, which is determined at least taking into account an expected rolling force and/or a rolling torque to be expected and/or an infeed speed of the rolling stock and/or the roll gap geometry .
  • a pilot control function which is determined at least taking into account an expected rolling force and/or a rolling torque to be expected and/or an infeed speed of the rolling stock and/or the roll gap geometry .
  • the pilot control rotational speed is specified in such a way that from the contact of the rolling stock with the driven work roll until the stationary target rotational speed is reached, the time integral between the pilot control rotational speed and the stationary target rotational speed results in an area that describes a specifiable compensation length that corresponds to the expected Mass flow disturbance at the roll gap entry corresponds to the start of rolling.
  • the compensation length is preferably calculated from the area.
  • the compensation length can be calculated taking into account the rotational speed of the work roll and other components influencing the mass flow at the start of rolling.
  • the compensation length can be calculated in particular taking into account the rotational speed of the work roll at the start of rolling, the pull-in behavior from the contact of the rolling stock with the work roll and the vertical movement of the interacting work rolls when tapping.
  • a rolling stock speed of the rolling stock is measured at a stand inlet of the rolling stand and taken into account in the variation of the pilot control rotational speed from the contact of the rolling stock with the driven work roll.
  • a disturbance that remains despite the rotational speed pre-control which can be caused, for example, by changing and unknown friction conditions in the roll gap, can be further reduced by measuring the actual rolling stock speed at the stand entrance and adjusting the variation of the pre-control rotational speed of the driven work roll, taking into account the measured rolling stock speed.
  • a power consumption of casting machine drives of a casting machine connected upstream of the rolling mill is taken into account when the pilot control rotational speed is varied from the point at which the rolling stock comes into contact with the driven work roll.
  • a disturbance that remains despite the rotational speed pre-control which can be caused, for example, by changing and unknown friction conditions in the roll gap, can be further reduced by measuring the power consumption of the casting machine drives and adjusting the variation of the pre-control rotational speed of the driven work roll, taking into account the measured power consumption.
  • a rolling mill according to the invention for rolling a rolled stock comprises at least one roll stand and at least one control and/or regulating unit that activates the roll stand, the control and/or regulating electronics being set up to measure a gap height of a roll gap arranged between work rolls of the roll stand before the rolled stock comes into contact with to set these work rolls smaller than an entry thickness of the rolling stock, to operate at least one driven work roll of the roll stand at a target rotational speed after the rolling stock has reached the roll gap, and to operate the driven work roll at a pilot control rotational speed that differs from the target rotational speed until the rolling stock reaches the roll gap .
  • control and/or regulating electronics are set up to vary the pilot control rotational speed from the point at which the rolling stock comes into contact with the driven work roll in such a way that the pilot control rotational speed increases or decreases monotonically, with the control and/or regulating electronics being set up to specify the pilot control rotational speed in this way that the monotonous profile of the pilot control rotational speed extends over time within a roll gap filling time, which begins with the contact of the rolling stock with the driven work roll and ends when the steady-state target rotational speed is reached.
  • the rolling mill can be used to carry out the method according to one of the above-mentioned configurations or any combination of at least two of these configurations.
  • the rolling mill can also have two or more rolling stands that can be controlled with the control and/or regulating unit.
  • the control and/or regulation unit can have at least one data processing unit, for example a microprocessor, and at least one data memory.
  • the length of the nip filling time is preferably greater than 50 ms.
  • control and/or regulating electronics are set up to vary the pre-control rotational speed by means of a pre-control function from the point at which the rolling stock comes into contact with the driven work roll and to activate the pre-control function beforehand at least taking into account an expected rolling force and/or a rolling torque to be expected and/or or to determine an entry speed of the rolling stock.
  • control and/or regulating electronics are set up to specify the pilot control rotational speed in such a way that from the contact of the rolling stock with the driven work roll until the stationary target rotational speed is reached, the time integral between the pilot control rotational speed and the stationary target rotational speed results in an area which describes a definable compensation length that corresponds to the expected mass flow disturbance at the roll gap entry at the start of rolling.
  • the control and/or regulating electronics are preferably set up to calculate the compensation length from the area.
  • the control and/or regulating electronics can be set up so that the compensation length can be calculated taking into account the rotational speed of the work roll and other components influencing the mass flow at the start of rolling.
  • the control and/or regulating electronics can be set up so that the compensation length can be calculated, in particular taking into account the rotational speed of the work roll at the start of rolling, the pull-in behavior from the contact of the rolling stock with the work roll and the vertical movement of the interacting work rolls during tapping.
  • the rolling mill comprises at least one measuring unit, which is arranged at a stand inlet of the roll stand and is connected to the control and/or regulating unit, for measuring a rolling stock speed of the rolling stock at the stand inlet, the control and/or regulating unit being set up to measure the measured Rolled material speed to be considered in the variation of the pilot control rotational speed from the contact of the rolled material with the driven work roll.
  • the open-loop and/or closed-loop control unit is set up to take into account a measured power consumption of casting machine drives of a casting machine connected upstream of the rolling mill when the pilot control rotational speed varies from the point at which the rolling stock comes into contact with the driven work roll.
  • figure 1 shows an exemplary representation of a rotational speed curve in a conventional rolling mill without rotational speed pre-control.
  • the rotational speed v of a driven work roll of a roll stand of the rolling mill is plotted against time t.
  • time t A a rolling stock is tapped with the roll stand.
  • the actual rotational speed v actual is shown, with a temporary decrease in the actual rotational speed v actual being visible from the point of piercing.
  • the rolling stock material is backed up by the tapping, the length of the backed-up rolling stock material being obtained from the area F between the setpoint rotational speed v 0 and the actual rotational speed v actual .
  • FIG 2 shows an exemplary representation of a rotational speed profile in a conventional rolling mill with rotational speed pre-control.
  • the rotational speed v of a driven work roll of a roll stand of the rolling mill is plotted against time t.
  • a rolling stock is tapped with the roll stand.
  • the driven work roll is operated at a pilot control rotational speed v v which is higher by ⁇ v than the setpoint rotational speed v 0 .
  • the pre-control rotational speed v v is adapted to the setpoint rotational speed v 0 .
  • the actual rotational speed v actual is shown.
  • the drop in rotational speed when the rolled stock is tapped with the roll stand is compensated for by this rotational speed pre-control.
  • figure 3 shows a schematic representation of speed ratios when tapping a rolling stock with a conventional rolling mill 1, from which in figure 3 only one driven work roll 2 of a roll stand of the rolling mill 1 that is not shown in more detail is shown.
  • a rolling stock 3 enters the roll stand with an entry thickness h 1 and an entry speed v 1 and comes into contact with the driven work roll 2 at time t 1 .
  • the driven work roll 2 rotates with the rotational speed v 0 and a torque M roll ( t).
  • the rolling stock 3 reaches the roll gap with the gap height h 2 .
  • the mass flow conditions during tapping in the roll stand are complex and cannot be described solely by the speed behavior of the drive of the driven work roll 2 .
  • the head section of the rolled stock 3 abutting the work roll 2 is accelerated by the high surface speed of the work roll 2 and drawn more quickly into the roll gap.
  • the roll gap is completely filled.
  • This effect depends on the friction conditions in the roll gap and the roll gap geometry, but not on the rolling torque that occurs.
  • figure 4 shows an exemplary representation of a rotational speed curve in an exemplary embodiment of a rolling mill according to the invention.
  • the rotational speed v of a driven work roll of a roll stand of the rolling mill is plotted against time t.
  • time t 1 a rolling stock entering the roll stand comes into contact with the driven work roll, as shown in figure 3 is shown.
  • the rolling stock reaches the roll gap.
  • a gap height of a roll gap arranged between work rolls of the roll stand before the rolling stock comes into contact with these work rolls is set smaller than an entry thickness of the rolling stock, as described in figure 3 is shown.
  • the driven work roll of the roll stand is operated at a target rotational speed v 0 after the rolling stock has reached the roll gap.
  • the driven work roll is operated at a pre-control rotational speed v v that deviates from the target rotational speed v 0 until the rolling stock reaches the roll gap, with the pilot control rotational speed v v being ⁇ v less than the target rotational speed v 0 .
  • the pilot control rotational speed v v is varied from the contact of the rolling stock with the driven work roll over a period of time t v in such a way that the pilot control rotational speed v v increases monotonically.
  • the pilot control rotational speed v v is varied from the point at which the rolling stock comes into contact with the driven work roll by means of a pilot control function which, at least taking into account an expected rolling force and/or a rolling torque to be expected and/or an entry speed of the rolling stock and/or the roll gap geometry, in particular in Dependence of the entry thickness of the rolling stock and the roll gap height is determined.
  • the area F v between the setpoint rotational speed v 0 and the pilot control rotational speed v v between the times t 1 and t 2 is proportional to the length disturbance caused by the piercing of the rolling stock with the roll stand.
  • the pilot rotation speed can be specified in such a way that from the contact of the rolling stock with the driven work roll until the stationary setpoint rotational speed is reached, the time integral between the pilot control rotational speed and the stationary setpoint rotational speed results in an area that describes a predeterminable compensation length that corresponds to the expected mass flow disturbance at the roll gap entry at the start of rolling.
  • the compensation length can be calculated from the area.
  • the compensation length can be calculated taking into account the rotational speed of the work roll and other components influencing the mass flow at the start of rolling.
  • the compensation length can be calculated in particular taking into account the rotational speed of the work roll at the start of rolling, the pull-in behavior from the contact of the rolling stock with the work roll and the vertical movement of the interacting work rolls when tapping.
  • the pilot control rotational speed is specified in such a way that the monotonous course of the pilot control rotational speed (v v ) occurs within a roll gap filling time, which begins with the contact of the rolling stock (3) with the driven work roll (2) and when the steady-state target rotational speed (v 0 ) ends, extends.
  • the length of the roll gap filling time can be selected to be greater than 50 ms.
  • a rolling stock speed of the rolling stock can be measured at a stand inlet of the rolling stand and taken into account in the variation of the pilot control rotational speed from the contact of the rolling stock with the driven work roll.
  • a power consumption of casting machine drives of a casting machine upstream of the rolling mill can be taken into account.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
EP16778843.9A 2015-10-15 2016-10-11 Verfahren zum walzen eines walzguts und walzwerk Active EP3362199B2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102015220042 2015-10-15
DE102016214715.3A DE102016214715A1 (de) 2015-10-15 2016-08-09 Verfahren zum Walzen eines Walzgutes und Walzwerk
PCT/EP2016/074258 WO2017064017A1 (de) 2015-10-15 2016-10-11 Verfahren zum walzen eines walzguts und walzwerk

Publications (3)

Publication Number Publication Date
EP3362199A1 EP3362199A1 (de) 2018-08-22
EP3362199B1 EP3362199B1 (de) 2020-02-19
EP3362199B2 true EP3362199B2 (de) 2023-01-11

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EP16778843.9A Active EP3362199B2 (de) 2015-10-15 2016-10-11 Verfahren zum walzen eines walzguts und walzwerk

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US (1) US10875065B2 (ja)
EP (1) EP3362199B2 (ja)
JP (1) JP6620233B2 (ja)
KR (1) KR20180056721A (ja)
CN (1) CN108136462B (ja)
DE (1) DE102016214715A1 (ja)
WO (1) WO2017064017A1 (ja)

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DE102020206535A1 (de) * 2020-05-26 2021-12-02 Kocks Technik Gmbh & Co Kg Walzgerüst mit mehreren Walzen mit integrierter Durchmesserabtastung des einlaufenden Walzgutes und Korrektur des Kalibers aufgrund des Walzgutdurchmessers
CN112337981A (zh) * 2020-10-16 2021-02-09 中冶京诚工程技术有限公司 棒线材轧机转速稳态值拟合方法及装置
CN112337979A (zh) * 2020-10-16 2021-02-09 中冶京诚工程技术有限公司 棒线材轧机控制方法及装置

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JP2005254289A (ja) * 2004-03-12 2005-09-22 Jfe Steel Kk 圧延機の速度制御方法
DE102007049062B3 (de) * 2007-10-12 2009-03-12 Siemens Ag Betriebsverfahren zum Einbringen eines Walzguts in ein Walzgerüst eines Walzwerks, Steuereinrichtung und Walzwerk zum Walzen eines bandförmigen Walzgutes
EP2684623A1 (de) * 2012-07-09 2014-01-15 Siemens Aktiengesellschaft Verfahren zur Bearbeitung von Walzgut in einer Walzstraße
EP2796217A1 (de) * 2013-04-22 2014-10-29 Siemens Aktiengesellschaft Verfahren zum Bearbeiten von Walzgut in einem Walzwerk mit mindestens einem Walzgerüst
EP2839892A1 (de) 2013-08-23 2015-02-25 Siemens Aktiengesellschaft Verfahren zur Bearbeitung von Walzgut in einer Walzstraße und Walzstraße

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JP6620233B2 (ja) 2019-12-11
DE102016214715A1 (de) 2017-04-20
JP2018534145A (ja) 2018-11-22
WO2017064017A1 (de) 2017-04-20
CN108136462A (zh) 2018-06-08
EP3362199B1 (de) 2020-02-19
EP3362199A1 (de) 2018-08-22
US20180297094A1 (en) 2018-10-18
CN108136462B (zh) 2020-01-03
US10875065B2 (en) 2020-12-29
KR20180056721A (ko) 2018-05-29

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