WO2008090121A1 - Verfahren zur führung eines giessguts aus einem giessbehälter einer giessanlage und giessanlage zum giessen eines giessguts - Google Patents
Verfahren zur führung eines giessguts aus einem giessbehälter einer giessanlage und giessanlage zum giessen eines giessguts Download PDFInfo
- Publication number
- WO2008090121A1 WO2008090121A1 PCT/EP2008/050633 EP2008050633W WO2008090121A1 WO 2008090121 A1 WO2008090121 A1 WO 2008090121A1 EP 2008050633 W EP2008050633 W EP 2008050633W WO 2008090121 A1 WO2008090121 A1 WO 2008090121A1
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- WO
- WIPO (PCT)
- Prior art keywords
- casting
- rolling
- load
- roller
- drive
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/20—Controlling or regulating processes or operations for removing cast stock
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
Definitions
- the invention relates to a method for guiding a cast product from a casting container of a casting plant, wherein the casting material is removed from the casting container by means of a series of leading rollers and rolling rollers, wherein a rolling roller for reducing the thickness of the casting material
- Rolling force exerts on the casting, while a leading role exerts no rolling force on the casting, and wherein at least the rolling rollers are driven by a respective load applied to a drive.
- the invention further relates to a casting plant for casting a cast product, in particular a strand or a billet strand, wherein the cast material is discharged from a casting container by means of a series of acting on the cast material leading rollers and rolling rollers, wherein a rolling roller to reduce the thickness of the casting a Rolling force exerts on the casting, while a leading role exerts no rolling force on the casting, wherein at least the rolling rollers are independently driven.
- the invention relates to an associated control device, an associated computer program product and a data carrier with computer program product stored thereon.
- a casting plant can be a continuous casting plant, a continuous billet casting plant or even a continuous casting plant with continuous casting.
- a strand usually a metallic strand, in particular a steel strand
- a billet continuous casting plant a plurality of strand billets is usually cast from a mold, usually two to six billets.
- electric driven rollers or pairs of rolls are usually provided.
- a strand is withdrawn substantially vertically from the mold and transferred by means of a pouring arc in a substantially horizontal direction.
- the rolls or pairs of rolls are advantageously used not only for guiding the strand, but also for reducing the thickness of the casting in casting plants.
- Critical quantities when casting a cast product are the casting speed and the desired final thickness, provided that a reduction in thickness is envisaged.
- the speed of the roller drives or roller pair drives can nen.
- the mean value of the speed of all drives is kept constant.
- the casting speed decreases as the thickness of the strand decreases.
- the driven rollers rotate at the same radial speed, a speed change resulting from the reduction in the thickness of a G mangutabitess can not be considered sufficiently. In general, therefore, no reduction in the thickness of the casting is provided in such a method for this reason.
- rollers or pairs of rollers acting on the cast material are driven by means of drives, all of which run with the same load.
- the pairs of rollers including drive and means for generating rolling force are referred to as reduction framework.
- the operation of the drives with the same load in a dynamic thickness reduction - dynamic since the rolling forces of the time-variable phase curve within the strand depends - the strand o the stick to the result that at low vertical force or Rolling force on the strand, the frictional forces are so low that the role loses the liability and no or reduced feed transfers to the strand.
- the thickness reduction of the strand over the different pairs of rollers is highly process-dependent and dynamic during casting - instabilities in the casting speed occur.
- the dynamics of the thickness reduction is determined by the calculated liquid core fraction within a strand, which are determined by corresponding models, which are not the subject of this application.
- Patent EP 0 463 203 B1 discloses a guide method for electric drives of rolls of a continuous casting installation, in which the strand is pulled off from the mold of the continuous casting plant by the driven rollers whose drives are regulated individually via regulators and can be reduced in thickness , Disadvantage of this teaching is that so that the drives are not sufficiently flexible in terms of use within casting plants with reduction stands.
- the invention has for its object to provide a device and a method with which increases the stability of the casting speed and a significant reduction in the thickness of a cast can be achieved.
- the process associated part of the object is achieved by a generic method of the type mentioned fact that the rolling force of at least one rolling roller is detected and that the load of the drive of this rolling roller is controlled in dependence on the detected rolling force.
- An improved distribution of the power introduced by the rolling rollers onto the cast material increases the available propulsion energy for the cast material. This allows a greater reduction in the thickness of the casting material and at the same time avoids the slowing down of the casting speed of the casting due to high rolling forces. A sticking of the casting in the caster can therefore be circumvented.
- the transmission of the propulsive energy to the cast material is improved, whereby the quality of the surface of the cast material is increased, compared to a surface of the cast product, which corresponds to those of the prior art is manufactured known methods.
- a total load is determined as the sum of the loads of the rollers of the rolling rollers and a total load as the sum of the rolling forces exerted by the rolling rollers, wherein the loads of the rolling rollers associated drives are controlled so that they are for Total load behavior, such as the rolling forces of each associated rolling rollers to the total rolling force.
- a speed additional setpoint is additionally determined to control the load of a drive to a speed of a roll to a by the roll-related speed increase of a Rolled G mangutabitess adapt. This is usually dependent on the load of the drive in the present method.
- the additional speed setpoint can be calculated according to the following equation:
- I 1 is the actual current of the ith drive
- I 1 is the force dependent setpoint of the ith drive
- p is a constant
- n N is a rated speed
- I N is a drive rated current
- a nominal rotational speed of the drive which is acted upon by a nominal current, is a characteristic of a drive, which in this way of determining the rotational speed additional value is a basis for determining the rotational speed additional value.
- one of the leading rollers is driven in such a way by a force applied to a load drive and the thickness of the casting not reducing pressure applied to the foundry that a predetermined casting speed of the cast is set.
- the roller adjusting the casting speed of the cast material is acted on by means of a load setpoint value, so that an adaptation of the load to the nominal load value leads to the setting of a desired casting speed.
- the casting speed adjusting roller is not acted upon by a speed additional setpoint.
- the casting speed of the casting is kept constant.
- the nominal load value for driving the speed adjusting roller is normally constant. If the casting speed is to be changed, ie increased or reduced in comparison to the present value of the casting speed In this case, the load setpoint for the speed setting roll is changed.
- the drive assigned to the adjusting roller preferably regulates the load internally, so that the predetermined desired value of the load is set on the drive.
- the loads of the drives are controlled by the speed adjusting roller downstream rollers in response to the detected load of the casting speed adjusting roller associated drive. So if the casting speed is to be changed, i. if the load of the drive of the speed adjusting roller is changed, this change of the load of the drive of the speed adjusting roller and thus the intention of changing the casting speed is taken into account for the control of the drives of the following rolling rollers.
- the load of the measuring roller associated drive is detected and from this a load offset value for the loads determines the drives assigned to the measuring roller downstream roles and controlled the drives based on this load offset value. It can thereby be achieved that the drives of the roll following the measuring roll are controlled in such a way by means of the load offset value that the following rolling rolls, which can be considered as one unit, relieve the measuring roll in each effective direction. This means, for example, that a change in the casting speed of the casting, which is not desired and is caused by the dead weight of the discharged casting, is compensated.
- a PI controller is used to determine the load offset value.
- a slightly positive active current can be specified as the setpoint to determine the load offset value.
- the rollers following the measuring roller relieve the measuring role in each effective direction, in which the drives of the measuring roller assigned to subsequent roles drives are controlled by means of the thus determined load offset value.
- the load of the drive assigned to the measuring roller is set to a predefinable constant load value.
- Such adjustment of the load of the measuring roller associated drive ensures even with low pressure force of the measuring role on the foundry for a constant slip between the measuring role and the foundry. This also reduces the occurring measurement error in the measurement of the casting speed.
- a part of the object assigned to the device is achieved by a control device for a casting installation, with a machine-readable program code which has control commands which cause the control device to carry out a method according to one of claims 1 to 13.
- a central control device is provided, which controls the drives of the leading and rolling rollers according to the invention, as well as the associated casting plant.
- a device associated with the part of the task in a generic casting plant of the type mentioned is achieved in that means for detecting a force exerted by one of the rolling rollers on the cast rolling force, and by a control device according to claim 14 by means of which a load of a rolling Assigned role
- rolling force is understood to mean a force which is suitable for effecting a plastic, permanent deformation of a casting.
- a roller which exerts such a force on the cast material is called a rolling roller.
- leading roles are provided, which are provided, for example, to define the direction, in particular a pouring arc.
- a reduction in the thickness caused by elastic deformation of the casting should not be regarded as a reduction in thickness in the context of this application, since this reduction in thickness is reversible and not permanent.
- means for detecting a total load are provided as a sum of the loads of the rolling rollers driving drives and means for detecting a total rolling force as the sum of the rolling forces exerted by the rolling rollers on the cast material, wherein the loads associated with the rolling rollers Drives are adjusted by means of the control device such that for each drive the ratio of the load to the total load is substantially equal to the ratio of the rolling force exerted by the rolling roller assigned to this drive
- the means for detecting a total load can directly detect a total load of the drives of the rolling rollers or determine the total load from the individual loads of the drives by forming a sum of the individual loads. This applies analogously to the means for recording a total rolling force.
- the means for detecting a total force are designed in such a way that they use the individual rolling forces exerted on the cast material by the rolling rollers in order to determine a total rolling force therefrom by summation. It may also be a reduction in thickness of the cast by rolling to determine a total rolling force be used.
- I 1 denotes the value of the active current to be set for the drive of the rolling roller i
- F 1 the rolling force exerted by the rolling roller i on the castings
- I tot the total load I tot the total load and F to t the total rolling force.
- means are provided for determining a rotational speed additional target value for controlling at least one of the drives. Due to the reduction in the thickness of the casting by the rolling force of the rolling rollers, there is an increase in the speed of the Gellogutabitese due to the Massenpound- law. In order to account for this speed increase due to the reduction in thickness for subsequent rolling rolls, it is necessary to determine an additional speed setpoint. This takes into account the changes in speed of the castings to be rolled by previous Wai- zen and allows an increase in the stability of the casting speed. In particular, it is advantageous to determine the additional speed setpoint value with means for determining the additional speed setpoint value, which are designed such that the additional speed setpoint value is determined according to the relationship:
- I 1 is the actual current of the ith drive
- I 1 the force-dependent setpoint of the i-th drive, p a
- n N denotes a rated speed and I N denotes a rated current of the drive. Due to the simple relationship and the variables contained therein for calculating the additional speed setpoint, the additional speed setpoint can be determined in real time and the control device can set an additional speed setpoint determined for a specific drive.
- a nominal rotational speed of the drive, which is acted upon by a nominal current, is a characteristic of a drive, which in this way of determining the rotational speed additional value is a basis for determining the rotational speed additional value.
- the load of a drive assigned to a leading roller and a pressure force exerted by the leading roller on the cast material are adjusted such that a predefinable casting speed of the cast material is set.
- a setpoint for the load can be specified so that the scope of this drive associated with the leading roller rotates at a desired casting speed.
- the roller is preferably not acted upon by a speed additional setpoint.
- the load setpoint for this drive is constant. Unless a change in the desired casting speed of the casting is to be achieved. Then, the target value of the load of the drive is adjusted accordingly and the load of the drive is changed so that the desired casting speed of the casting is set.
- the control device is designed such that the loads of the drives of one of the casting speed adjusting roller downstream role depending on the detected load of the casting speed adjusting role associated drive can be adjusted. That is, when the load of the drive of the leading roller increases above a load limit, it is desired to increase the casting speed of the casting. If, on the other hand, the load falls below a predefinable load limit value, it is evident that the changed setpoint value of the load of the drive specified that the casting speed of the cast is to be reduced.
- the casting speed adjusting roller is designed for measuring the casting speed of the casting. It thus eliminates an additional measuring device for measuring the casting speed of the cast. Despite this saving, the operational safety increases and it eliminates the otherwise necessary maintenance of this measuring device in a technically inhospitable area, the hot casting material.
- a PI controller for determining a load offset value from the detected load of the drive which measures the casting speed, with which the load of one of the rollers assigned to the measuring roller can be controlled. This makes it possible for the rollers following the measuring roller to run as neutral as possible with the casting, which has a casting speed other than zero.
- a PI controller can cause the control device to control the loads of the drives of the rollers following the leading roller in such a way that the measuring roller is relieved of load by the following rolling rollers in each effective direction becomes.
- the control device is designed such that the load of the drive of the casting speed measuring roller is kept at a constant value.
- the means for detecting a load of a drive detect its torque.
- the active current of the drive can be detected by the means for detecting a load. Both by the torque and by the active current, a load of a drive can be determined safely.
- an active current as a measure of the load may if appropriate be used preferentially, because this is generally easier to measure than a torque.
- torque and active current are equivalent for determining a load of a drive.
- FIG. 1 shows a caster 1, which is designed as a continuous casting plant, for casting a G manguts 2, which is designed as a strand. Furthermore, FIG. 1 shows a casting container 3 designed as a through-mold, from which the
- Strand 2 is discharged. After substantially vertical exit of the strand 2 from the continuous casting mold 3 with the casting speed v guiding rollers 4 guide the strand 2 in a horizontal direction.
- the strand has an initial thickness 9, which is to be reduced to a final thickness 9 '.
- a plurality of reduction stands 13-0, 13-1, 13-2, 13-3, 13-4 are used.
- a rolling force F can be exerted on the strand 2, which leads to a reduction in the thickness 9 of the strand 2.
- a reduction in the thickness of the strand already taking place during casting facilitates subsequent rolling in a rolling train.
- a consequence of a reduction in the thickness 9 of the strand is that a strand section reduced in thickness 9 increases its velocity due to volume conservation. Between rolling reduction stands 13-i and 13-i + 1 are therefore different speeds of the strand sections before.
- Each of the reduction stands 13-i, i 0... 4, which are arranged above the strand 2, can Therefore, as a rolling rollers 5, operated.
- an i-th rolling roller 5 is pressed onto the strand 2 with a rolling force F 1 .
- the drives 8 of the rollers 4, 5 of the reduction stands 13-i are each operatively connected to a control device 10 which controls the drives 8.
- the rolling forces F 1 exerted on the strand 2 can be controlled by the control device 10.
- the reduction of Thickness 9 of the strand 2 is accomplished by the subsequent reduction stands 13-1, 13-2, 13-3, 13-4.
- control device 10 is designed such that the rolling forces Fi, F 2 , F 3 , F 4 communicated by the model are set on the reduction stands 13-1, 13-2, 13-3, 13-4 and then out of them detected rolling forces Fi, F 2 , F 3 , F 4 a total force Ftot is determined.
- the control device 10 now controls the loads of the drives 8 in such a way that the load I 1 of an i-th drive 8 of a rolling roller to the total load I tot is equal to the rolling force F 1 exerted on this strand by the roller 5 to the total force F tot
- the first reduction stand 13-0 which has no rolling rollers 5 but only guide rollers 4 when guiding the strand, serves as a device for adjusting the casting speed or for measuring the casting speed. Accordingly, depending on the process carried out on the roll, the leading roll 4 arranged above the strand 2 is also referred to as the speed adjusting roll 6 or as the measuring roll 7.
- the arranged above the strand 2 leading roller 4 is pressed with a pressing force A on the foundry. This ensures contact with the strand.
- the drive 8 of the roller 4, 6, 7 of this first reduction stand 13-0 is not controlled like the drives 8 of the rolling rollers 5.
- the drive 8 of this leading role 4 of the first reduction stand 13-0 is a Load setpoint given to set a desired casting speed v.
- This desired casting speed v can, for example, be supplied to the control device 10 on the user side, which then controls the drive 8 of the speed setting roller 6 of the reduction stand 13-0 accordingly.
- the load Io of the drive 8 of the adjusting roller 6 of the first reduction stand 13-0 can be used to control the load I 1 , I 2 , I 3 , I 4 of the drives 8 of the following rolling rollers 5.
- the load Io of the first drive is detected and the
- Control device 10 is supplied. There, the detected load Io by means of a PI controller 12 to a control signal, the loads I 1 , I 2 , I 3 , I 4 of the rolling rollers 5 associated drives 8 processed. This is of particular importance if a measurement of the casting speed by the measuring roll 7 of the first reduction stand 13-0 is to take place.
- FIG. 2 is based on an initiated continuous casting process.
- a model for determining a liquid core of the rolling stock is available, which determines the required rolling forces on the rolling rollers for setting a final thickness 9 'starting from an initial thickness 9. These determined rolling forces to be set are fed to a control device in a method step 100.
- FIG. 2 it is provided that an adjustment of the casting speed of the casting material is carried out by means of a reduction stand with which, in principle, a reduction in thickness can also be made.
- this reduction stand is not used for rolling, but for adjusting and / or measuring a casting speed of the Casting container discharged castings. Therefore, the leading role associated with this reduction stand is also referred to as a measuring or casting speed adjusting role.
- a method step 101 it is first determined in a method step 101 which roles are to be used as rolling rollers i or can be used due to a defect.
- the controller adjusts a rolling force F 1 for the respective i-th rolling roller in a method step 102, wherein the respective rolling force F 1 is dynamically predetermined by the above-mentioned model.
- the rolling force F 1 is detected, the actual value of the rolling force of the ith roller in a step 103.
- the detection and adjustment of the rolling force F 1 can be done substantially simultaneously.
- each rolling roller i not only exert a rolling force F 1 on the strand, but each rolling roller i is assigned a drive which drives the rolling roller so that the strand is moved along a predetermined direction.
- the drive of a rolling roller i is to a load I 1 applied thereto.
- a method step 103 ' an actual value of the load I 1 1St of each individual drive assigned to a rolling roller i is detected. From the detected rolling forces F 1 and the detected loads I 1, the drives of the rolling rollers, a total load I tot and a total rolling force F tot is determined in a method step 104. This is achieved by summing up the detected loads I 1 . The total rolling force F tot is determined by adding up the individual rolling forces F 1 exerted on the strand by the rolling rollers i. Subsequently, the (desired) load I 1 of the individual drives is determined as a function of the rolling force F 1 in a method step 105. This is done according to the relationship:
- this load I 1 is set to the new value I 1 in a method step 106.
- the number i of the rolling rollers can be arbitrarily selected depending on a respective casting plant.
- an intended measurement of the casting speed by the measuring roller or a change of the casting speed by the speed adjusting roller is considered in a method step 108.
- a changed casting speed is to be set in a method step 108, then it is advantageous that the load of the drives of the rolling rollers is controlled as a function of the detected load of the drive of the roller setting the speed. If the load of the drive associated with the speed setting roller increases, the loads of the drives of the rolling rollers are adapted more quickly to a changed casting speed.
- rollers rolling produce a resistance to the change in the casting speed by a too low load of their drives. This should be through one of the load the control of the drives associated with the rolling rolls associated with the casting speed adjusting roller can be avoided.
- the setting of the casting speed in method step 108 is therefore taken into account when setting the loads in method step 106.
- a measurement of the casting speed of the casting can be made. If a measurement of the casting speed is to take place in a method step 111 with the measuring roll, then it is expedient that the roll measuring the speed be relieved as far as possible by the following rolling rolls in each effective direction. This can be done as error-free measurement.
- a load offset value ⁇ I by means of a PI controller in a step 110 is determined.
- the load offset value .DELTA.I with which the drives associated with the rolling rollers are controlled, it can be achieved that the measuring roller is substantially relieved in all directions of action during the measurement.
- a rotational set additional setpoint can be determined in a method step 107.
- the speed setpoint By means of the speed setpoint, the increase in speed of a portion of the castings caused by the reduction in thickness is included in the control of the rollers.
- the method can be carried out continuously, wherein the controls of the drives can be made as part of a control loop. In particular, the method can be carried out until the casting of a casting, for example a strand, is completed.
- the feed of the casting can be improved, and the stability of the casting speed can be increased.
- continuous casting and rolling plants can advantageously be operated with such a method, and in particular, a casting installation can be designed as an endless casting-rolling plant.
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Abstract
Description
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08708037A EP2111314A1 (de) | 2007-01-22 | 2008-01-21 | Verfahren zur führung eines giessguts aus einem giessbehälter einer giessanlage und giessanlage zum giessen eines giessguts |
CN2008800027914A CN101588881B (zh) | 2007-01-22 | 2008-01-21 | 将浇铸材料从浇铸设备的浇铸容器中导出的方法和浇注浇铸材料的浇铸设备及控制装置 |
BRPI0806813-5A BRPI0806813A2 (pt) | 2007-01-22 | 2008-01-21 | método para guiar um material fundido para fora de uma cámara de fundição de um sistema de fundição, e sistema de fundição para moldar um material fundido |
US12/522,440 US7987896B2 (en) | 2007-01-22 | 2008-01-21 | Method for guiding a cast material out of a casting chamber of a casting system, and casting system for casting a cast material |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007004053A DE102007004053A1 (de) | 2007-01-22 | 2007-01-22 | Gießanlage zum Gießen eines Gießguts und Verfahren zur Führung eines Gießguts aus einem Gießbehälter einer Gießanlage |
DE102007004053.0 | 2007-01-22 |
Publications (1)
Publication Number | Publication Date |
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WO2008090121A1 true WO2008090121A1 (de) | 2008-07-31 |
Family
ID=39315362
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2008/050633 WO2008090121A1 (de) | 2007-01-22 | 2008-01-21 | Verfahren zur führung eines giessguts aus einem giessbehälter einer giessanlage und giessanlage zum giessen eines giessguts |
Country Status (7)
Country | Link |
---|---|
US (1) | US7987896B2 (de) |
EP (1) | EP2111314A1 (de) |
CN (1) | CN101588881B (de) |
BR (1) | BRPI0806813A2 (de) |
DE (1) | DE102007004053A1 (de) |
RU (1) | RU2456119C2 (de) |
WO (1) | WO2008090121A1 (de) |
Families Citing this family (5)
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WO2010049338A2 (de) * | 2008-10-30 | 2010-05-06 | Siemens Aktiengesellschaft | Verfahren zum einstellen einer antriebslast für eine mehrzahl an antrieben einer walzstrasse zum walzen von walzgut, steuer- und/oder regeleinrichtung, speichermedium, programmcode und walzanlage |
DE102009031651A1 (de) * | 2009-07-03 | 2011-01-05 | Sms Siemag Aktiengesellschaft | Verfahren zum Bestimmen der Lage der Sumpfspitze eines gegossenen Metallstrangs und Stranggießanlage |
EP3000539B1 (de) * | 2014-09-24 | 2016-11-16 | SMS group GmbH | VERFAHREN ZUM GIEßEN UND WALZEN EINES ENDLOSEN STRANGGUTES |
US10355131B2 (en) * | 2016-05-17 | 2019-07-16 | Taiwan Semiconductor Manufacturing Company Ltd. | Semiconductor structure and manufacturing method thereof |
CN112912189B (zh) * | 2018-10-31 | 2022-09-27 | 日本制铁株式会社 | 控制系统、控制方法、控制装置以及程序 |
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RU2220812C2 (ru) * | 2002-01-31 | 2004-01-10 | Оао "Ормето-Юумз | Способ непрерывного литья заготовок и устройство для его осуществления |
DE10236368A1 (de) * | 2002-02-22 | 2003-09-04 | Sms Demag Ag | Verfahren und Vorrichtung zum Stranggiessen und unmittelbaren Verformen eines Metall-, insbesondere eines Giessstrangs aus Stahlwerkstoffen |
RU2302313C2 (ru) * | 2002-02-22 | 2007-07-10 | Смс Демаг Акциенгезелльшафт | Способ и устройство для непрерывной разливки с непосредственным обжатием металлической заготовки, в частности стальной заготовки |
-
2007
- 2007-01-22 DE DE102007004053A patent/DE102007004053A1/de not_active Ceased
-
2008
- 2008-01-21 CN CN2008800027914A patent/CN101588881B/zh not_active Expired - Fee Related
- 2008-01-21 US US12/522,440 patent/US7987896B2/en not_active Expired - Fee Related
- 2008-01-21 BR BRPI0806813-5A patent/BRPI0806813A2/pt not_active Application Discontinuation
- 2008-01-21 WO PCT/EP2008/050633 patent/WO2008090121A1/de active Application Filing
- 2008-01-21 RU RU2009131690/02A patent/RU2456119C2/ru not_active IP Right Cessation
- 2008-01-21 EP EP08708037A patent/EP2111314A1/de not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS60196202A (ja) | 1984-03-19 | 1985-10-04 | Hitachi Ltd | 異周速圧延制御装置 |
DE3822939C1 (en) | 1988-07-04 | 1989-10-05 | Mannesmann Ag, 4000 Duesseldorf, De | Continuous casting method for the production of slabs with a reduced thickness relative to the cast condition |
EP0350431A2 (de) | 1988-07-04 | 1990-01-10 | MANNESMANN Aktiengesellschaft | Stranggiessverfahren für die Erzeugung von Brammen mit einer gegenüber dem Gusszustand verringerten Dicke |
EP0463203A1 (de) * | 1990-06-25 | 1992-01-02 | Siemens Aktiengesellschaft | Führungsverfahren für die elektrischen Antriebe von Rollen einer Stranggiessanlage und Einrichtung zur Durchführung des Verfahrens |
EP0463203B1 (de) | 1990-06-25 | 1995-03-01 | Siemens Aktiengesellschaft | Führungsverfahren für die elektrischen Antriebe von Rollen einer Stranggiessanlage und Einrichtung zur Durchführung des Verfahrens |
DE202007001224U1 (de) * | 2007-01-22 | 2007-04-12 | Siemens Ag | Gießanlage zum Gießen eines Gießguts und Steuereinrichtung |
Also Published As
Publication number | Publication date |
---|---|
CN101588881B (zh) | 2012-06-20 |
CN101588881A (zh) | 2009-11-25 |
US7987896B2 (en) | 2011-08-02 |
EP2111314A1 (de) | 2009-10-28 |
BRPI0806813A2 (pt) | 2011-09-13 |
RU2009131690A (ru) | 2011-02-27 |
US20100038048A1 (en) | 2010-02-18 |
DE102007004053A1 (de) | 2008-07-31 |
RU2456119C2 (ru) | 2012-07-20 |
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