WO2012025266A1 - Procédé de détermination de l'usure d'un cylindre pour le laminage de produits à laminer - Google Patents

Procédé de détermination de l'usure d'un cylindre pour le laminage de produits à laminer Download PDF

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Publication number
WO2012025266A1
WO2012025266A1 PCT/EP2011/058155 EP2011058155W WO2012025266A1 WO 2012025266 A1 WO2012025266 A1 WO 2012025266A1 EP 2011058155 W EP2011058155 W EP 2011058155W WO 2012025266 A1 WO2012025266 A1 WO 2012025266A1
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WIPO (PCT)
Prior art keywords
roller
rolling
wear
roll
determined
Prior art date
Application number
PCT/EP2011/058155
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German (de)
English (en)
Inventor
Johannes Dagner
Matthias Kurz
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to EP11723400.5A priority Critical patent/EP2595768B1/fr
Priority to CN201180041458.6A priority patent/CN103097046B/zh
Publication of WO2012025266A1 publication Critical patent/WO2012025266A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2267/00—Roll parameters
    • B21B2267/24—Roll wear

Definitions

  • the present invention relates to a determination method for a wear of a roll for rolling of rolling stock.
  • the present invention further relates to a computer program which comprises machine code which can be processed directly by a computer and whose execution by the computer causes the computer to carry out such a determination method .
  • the present invention further relates to a computer which is designed such that it carries out such Ermitt ⁇ treatment method.
  • the present invention further relates to a rolling mill for rolling of rolling stock, which is equipped with such a computer.
  • the wear has an impact on the quality of the rolled stock.
  • the wear caused by entspre ⁇ -reaching rake corrections must - for the flat rolling optionally also in terms of profile and flatness - into account are ⁇ Strengthens compensated and, if possible.
  • a direct measurement of the roller wear is only possible if the relevant roller is removed from the rolling stand and can be measured.
  • a direct measurement of the roll wear is, however, not mög ⁇ Lich. It is known, however, to detect process variables of the rolling process and the roll wear counted by means of a Ver ⁇ schl constitutionmodells in real time. By means of the Ver ⁇ schl constitutionmodells is determined depending on the rolled distance of the rolling stock, the rolling force course of this route, etc., the wear of the respective roller.
  • the Ver ⁇ schl discloses the determined wear other STEU ⁇ mecanicssystemen available, for example for correction of the corresponding job.
  • process variables used in this case may be, for example, model-based predicted expected quantities
  • d is the expected wear
  • c a constant coefficient of wear
  • ⁇ the pressure distribution in the nip
  • the contact angle 1 the rolled length.
  • the wear coefficient c is set appropriately. It may depend on the above parameters.
  • thermal Bal ⁇ lotti When rolling a thermal Bal ⁇ lotti must be determined as part of the determination of variables for profile and flatness actuators. This is done in the prior art in that, during operation, a volume temperature distribution of the roller is continuously determined on the basis of a Surface of the roll occurring heat flow distribution is updated by means of a temperature model of the roller.
  • the vo ⁇ lumentemperaturver republic is here spatially resolved at least in the axial direction and in the radial direction of the roller, the heat flow distribution in the axial direction and in the tangential direction of the roller.
  • the determination of the thermal crown as part of said garaufsat ⁇ zes using a volumetric temperature distribution which is not spatially resolved in the tangential direction.
  • the heat ⁇ flux distribution is averaged in the tangential direction.
  • the volume temperature distribution is updated and tracked.
  • a volume temperature distribution of the roll is updated by means of a heat flow distribution occurring at the surface of the roll by means of a temperature model of the roll,
  • volume temperature distribution is spatially resolved at least in the axial direction and in the radial direction of the roller
  • the heat flow distribution is spatially resolved in the axial direction and in the tangential direction of the roll
  • At least an upper surface temperature is determined, which occurs at certain points of the surface of the roller, while the respective point is in contact with the rolling stock, and
  • the wear of the roller is determined taking into account the upper surface temperature of the roller.
  • the volume temperature distribution in the tangential direction of the roll is not spatially resolved.
  • the updated volume temperature Distribution a spatially resolved average ⁇ surface temperature distribution in the axial direction, which is characteristic of an average surface temperature of the roller.
  • the upper surface temperature can be determined by
  • the volume temperature distribution is also spatially resolved in the tangential direction of the roll. In this case, it is possible to determine the top surface tempera ⁇ ture solely on the basis of the updated volume temperature distribution.
  • the wear preferably comprises a thermal wear component.
  • the determination of the thermal wear component can be carried out, for example, by using the upper surface temperature and at least one further surface temperature of the roller related to the surface of the roller.
  • an internal temperature distribution given inside the roll can be used.
  • the wear preferably further comprises an abrasive wear portion.
  • the determination of the abrasive wear component is preferably carried out using a Oberflä ⁇ chenhärte the roller.
  • the surface hardness of the roll in this case becomes using the upper surface temperature the roller determined.
  • the determination of the abrasive wear ⁇ share can be done with the additional use of a temperature and / or the material composition of the rolling stock.
  • the heat flow distribution is given as such.
  • the saucemannvertei ⁇ lung is determined based on the rolling of the rolling material by the roller-related process variables and a plane defined by the not yet actuaries ized volumetric temperature distribution initial surface temperature distribution of the roll.
  • the process variables are (at least partially) model-based expected expected quantities.
  • the process variables are (at least partially) actual variables which are detected during rolling of the rolling stock by the roll.
  • Also mixed forms are possible. For example, based on actual variables recorded during rolling, a first wear value can be determined, which is currently expected. Based on the currently expected wear value can then be based on expected future kor ⁇ respond Schlierender process variables to forecast the wear occurring later.
  • the determination process can be performed in real time during rolling of the rolling stock by the roll. Alternatively, it may be prior to the rolling of the rolling material by the roller out ⁇ leads. An execution after rolling of the rolling stock by the roller is possible.
  • the wear is taken into account as part of the determination of manipulated variables, which influence the rolling of the rolling stock.
  • the inventive object is also achieved by a Compu ⁇ terprogramm of the type mentioned.
  • the computer- Program is designed in this case such that the computer performs a determination process with all steps of a determination method according to the invention.
  • the object is further achieved by a computer which is designed such that it performs such Railver ⁇ drive.
  • the object is further achieved by a rolling mill for rolling flat rolling stock, which is equipped with such a computer.
  • 1 shows schematically a rolling mill for rolling a
  • FIGS. 8 and 9 formulas
  • FIGS. 12 to 14 are flowcharts.
  • the present invention will be explained in more detail below in connection with the rolling of a flat rolled stock 1.
  • This embodiment represents by far the most common application of the present invention. In principle, however, the present invention is applicable to any rolling stock 1, for example rod-shaped rolling, tubular rolling or profiled rolling.
  • a rolling mill for rolling the flat rolling stock 1 has a plurality of rolling stands 2.
  • the rolling stands 2 are run through by the flat rolling stock 1 in succession.
  • Each rolling stand 2 of the rolling mill has rollers 3.
  • the rollers 3 comprise at least work rolls, often more Wal ⁇ zen, for example, support rolls or - in addition to back-up rolls - intermediate rolls.
  • the number of rolling mills 2 of the rolling mill shown is purely exemplary. Minimal is only a single stand 2 available. Furthermore, it is not mandatory that a tape ⁇ running direction x, as shown in Figure 1, is always the same. Alternatively, a reversing rolling could take place, in particular if the rolling mill has only one single rolling stand 2 or only two rolling stands 2.
  • the flat rolled stock 1, which is rolled in the rolling mill, is a strip as shown in FIG. Alternatively, however, it may be another flat rolled stock 1, for example a plate or a heavy plate.
  • the rolling mill is equipped with a computer 4.
  • the computer 4 is designed as a control computer that controls the rolling mill.
  • the computer 4 is therefore subsequently - at least in the rule - referred to as the control computer 4.
  • the control computer 4 In principle could ⁇ te it, however, be at the computer 4 to another computer, which does not control the mill, but is otherwise connected to the mill or is not even connected to the rolling mill.
  • the control computer 4 is usually designed as a software programmable device.
  • the operation of the control computer ⁇ 4 is determined by a computer program 5 which is the control computer 4 via a computer-computer connection (not shown) or a storage medium 6 is supplied.
  • the storage medium 6, the computer program 5 in machine-readable form - usually in electronic form - stored.
  • the storage medium 6 is shown in FIG. 1 as a USB Memory stick trained.
  • this embodiment is purely exemplary. Any other configurations of the storage medium 6 are possible, for example as a CD-ROM or as an SD memory card.
  • the control computer 4 is programmed with the computer program 5.
  • the computer program 5 includes machine code 7, which is directly executable by the control computer 4.
  • the execution of the machine code 7 determines the mode of action of the control computer 4.
  • the execution of the machine code 7 by the control computer 4 causes the control computer 4 to carry out a determination process, which will be explained in more detail below in conjunction with FIG.
  • the programming of the STEU ⁇ errechners 4 with the computer program 5 causes the corresponding configuration of the control computer. 4
  • the present invention is in principle applicable to all rolls 3 of the rolling stands 2. Of particular importance is the application in the work rolls of the rolling stands 2. The present invention will be further explained below in connection with the upper work roll 3 of the third rolling mill 2 shown in FIG. However, this definition is purely arbitrary. The present invention is applicable in an analogous manner to each other ⁇ de roller 3 of each rolling mill. 2
  • a step S 1 the control computer 4 initially initiates initialization of a volume temperature distribution V T of the roller 3 under consideration.
  • each node of the volume temperature distribution - see, for example, the points shown in FIG. 3 - of the roller 3 under consideration is initialized with an initial temperature.
  • the initial temperature may be the same for all nodes and corresponding to the ambient temperature, ie between 0 ° C and 40 ° C, for example.
  • the nodes of the volume of temperature distribution VT may be arranged such that the volume ⁇ temperature distribution VT namely (in the axial direction that is in Rieh- tung the axis of rotation of the roller 3) and (in the radial direction that is a direction that is orthogonal to the axis of rotation of the roller 3) is spatially resolved, in the tangential direction (that is, ei ⁇ nem radial distance about the rotational axis of the roller 3 around) but not JE is spatially resolved.
  • the volume temperature distribution VT may be spatially resolved in all three directions (axial, radial, tangential).
  • FIG. 4 shows purely by way of example a pane of such a three-dimensionally spatially resolved volume temperature distribution VT of the roll 3.
  • FIG 4 shows in addition a backup roll 8 and the Mo ⁇ model- ling and the flat rolling stock 1 and its Modellie ⁇ tion.
  • the modeling of the back-up roll 8 and the flat rolled stock 1 are of subordinate importance in the context of the present invention. Of importance, however, are the heat fluxes j, which are essentially determined by the contact of the considered roll 3 with the flat rolled stock 1, the cooling by cooling devices 9 and, if present, the contact with the support roll 8. To a lesser extent, there is still a heat flux through radiation. However, this heat flow can usually be neglected.
  • the heat flows j define as a whole a heat flux distribution ⁇ WT, the processing in the axial direction and Tangentialrich- is spatially resolved. Even in the case of a non-spatially resolved in tangential direction ⁇ volume temperature distribution VT heat flux distribution WT is spatially resolved in tangential direction. This is for example characterized ⁇ is indicated in FIG 3, that one of the axial zones of the lung Volumentemperaturvertei- VT is divided on its surface in a tangential direction into individual fields 10th For each individual field 10, a separate heat flow j can be specified.
  • the spatial resolution of the volume temperature distribution VT need not be uniform everywhere.
  • ⁇ train to the radial resolution is, for example, Be possible to provide a finer resolution in the vicinity of the surface of the roll 3 as in the vicinity of the axis of rotation of the roller 3.
  • the Volumentempera- VT is also spatially resolved in the tangential direction, the spatial resolution in the tangential direction can become increasingly coarse in a similar way as one approaches the axis of rotation of the roller 3.
  • An example: In the three outermost layers ( rings) of the volume temperature distribution VT there is a spatial resolution of 64 elements in the tangential direction. In the next three layers there is a spatial resolution in the tangential direction of 32 elements each.
  • the surface Tempe ⁇ raturver republic is such only in the axial direction spatial resolution function.
  • the surface temperature distribution T "in this case corresponds to the average surface temperature distribution T" of the roller 3 as a function of its axial position z.
  • the roller 3 is not in thermal equilibrium during rolling operation.
  • the volume temperature distribution VT must therefore be continuously updated.
  • the volume temperature distribution VT itself is required, on the one hand, and the heat flux distribution WT, which occurs on the surface of the roller 3, on the other hand.
  • the individual heat flows j (z, ⁇ ) be ⁇ forces, which are applied to ⁇ of the roller 3 at a certain axial position z and tangential position or on the upper surface of the roller 3 at this point flow out of her.
  • the heat flows j are tangent in the tangential direction. Rather, it is required that the heat flux distribution WT be spatially resolved both in the axial direction and in the tangential direction.
  • step S2 the control computer 4 receives process variables I.
  • the process variables I are related to the rolling of the rolling stock 1 by the roller 3. It is in the process ⁇ sizes I on the one parameter, such as a slurry ⁇ te of the rolling stock 1, the "chemistry" of the rolling stock 1 (ie, its material composition) and the diameter of the roll 3.
  • a slurry ⁇ te of the rolling stock 1 ie, its material composition
  • the diameter of the roll 3 On the other hand is variable such as the temperature T of the rolling stock 1, the rolling speed v, the rolling force F, the rolling speed n, etc.
  • the control computer 4 determines the surface temperature distribution on the basis of the volume temperature distribution VT.
  • the surface temperature distribution is - depending on whether the volume temperature distribution VT is spatially resolved in the tangential direction or not - spatially resolved only in the axial direction or both in the axial direction and in the tangential direction.
  • the step S3 consists, for example, essentially of a selection of the radially outermost layer of the volume temperature distribution VT.
  • the temperature determined for the radially outermost layer corresponds, in the case where the volume temperature distribution VT is not spatially resolved in the tangential direction, to the average spatially resolved average temperature in the axial direction.
  • An example of such a temperature profile is shown in FIG.
  • the control computer 4 determines the heat flow distribution W based on the process variables I and the surface temperature distribution of the step S3.
  • the heat flow distribution WT is, as already mentioned, spatially resolved both in the axial direction and in the tangential direction.
  • a step S5 the control computer 4 updates the volume temperature distribution VT on the basis of the heat flow distribution WT and the volume temperature distribution VT by means of a temperature model of the roll 3. If the volume temperature distribution VT (also) is spatially resolved in the tangential direction, a release of a three-dimensional heat equation takes place in step S5. When the temperature distribution volume VT is not spatially resolved in the tangential direction, the sum of the heat ⁇ streams j (z, cp) detected at the respective axial position z for each axial zone initially in tangential direction. Then, a two-dimensional heat equation is solved. Both approaches are known and familiar to those skilled in the art.
  • the updating of the volume VT temperature distribution of the roll 3 is done in the prior art to the thermal crown it to transmit at a roller 3 for rolling flat rolling stock 1 ⁇ . This is also possible within the scope of the present invention and is optionally carried out in a step S6. However, the determination of the thermal crowning is not a core subject of the present invention.
  • the control computer 4 determines at least one upper surface temperature T ".
  • the control computer 4 preferably determines the upper surface temperature T" such that it is spatially resolved in the axial direction. In this case - see FIG. 5 - a respective upper temperature is determined for the respective axial position z, which occurs at the points of the roller 3 determined by the respective axial position z, while the respective points are in contact with the rolling stock 3.
  • the upper surface temperature T "thus gives - possibly for the respective axial position z - the maximum temperature on the roll 3.
  • a corresponding temperature can be specified which is slightly lower.
  • control computer 4 determines the upper surface temperature distribution T "exclusively on the basis of the updated volume temperature distribution VT. This will be explained in more detail later in conjunction with FIG.
  • step S8 the control computer 5 determined by ei ⁇ nes wear model 11 wear d of the roller 3.
  • the control computer 4 determines the wear d as part of step S8 taking into account the ermit- in step S7 telten upper surface temperature distribution T ".
  • step S9 the control computer 4 takes further measure took ⁇ .
  • the control computer 4 can output the determined wear d to an operator 12 of the rolling mill.
  • the control computer 4 as shown in FIG. 2, to take into account the determined wear d as part of the determination of manipulated variables S, which influence the rolling of the rolling stock 1.
  • the determined manipulated variables S can act on the rolling stand 2 in which the roller 3 is installed. Alter ⁇ natively or additionally, the determined manipulated variables S act on other facilities of the rolling mill, for example other rolling stands 2. Other measures are also possible. This will be explained in more detail below.
  • step S10 the control computer 4 checks whether it should terminate the determination process. Depending on the result of the test of step S10, the control computer 4 is used
  • Step S2 back or not.
  • volume temperature distribution VT is also spatially resolved in the tangential direction, the determination of the upper
  • the control computer 4 selects for the selected axial position z the radially outermost elements of the volume temperature distribution VT.
  • the control computer 4 determines - as beispiels- - the highest temperature occurs in the VT, in step S12 se lected ⁇ elements of the volume distribution of temperature.
  • the control computer 4 can determine, for example, the average value of those local temperatures which occur between the beginning of the contact of the roller 3 with the rolling stock 1 and the end of the contact of the roller 3 with the rolling stock 1. Other approaches are possible. It is crucial that the determined temperature is at least close to the maximum temperature.
  • step S14 the control computer 4 assigns the temperature ascertained in step S13 to the upper surface temperature profile T "as the corresponding temperature value for the selected axial position Z.
  • step S15 the control computer 4 checks whether it already has the corresponding temperature for all axial positions z conducted ⁇ turar. If this is not the case, the control computer is 4 to step Sil back, in which he z se ⁇ lected another, not previously treated axial position. Otherwise, the procedure of FIG 6 is completed ⁇ det. If the volume of distribution of temperature VT is not spatially resolved in Tangentialrich- tung, need to determine the obe ⁇ ren surface temperature distribution T "both the volume of distribution of temperature VT and the heat flux distribution WT HE will range covered. This will be explained in conjunction with FIG. 7
  • steps S12 and S13 of FIG. 6 are replaced by steps S21 to S24.
  • the steps Sil, S14 and S15 of FIG. 6 are maintained.
  • step S21 the control computer 4 determines a contact angle for the selected axial position z.
  • the contact angle corresponds to the angle, over which the roller 3 is in contact with the rolling stock 1 at the selected axial position z - see explanation 4.
  • the determination of the contact ⁇ angle is carried out as a function of process variables as in ⁇ example, the diameter of the roller 3, the reduction, the Walzgutab Wegen etc ..
  • ⁇ is the Winkelge ⁇ speed of the roller 3.
  • the contact time t thus corresponds to the time during which is a z axial position at this point befind Anlagen the roller 3 during one rotation of the roller 3 with the rolling stock 1 is in contact.
  • step S23 the control computer 4 determines at least one heat flow j, which occurs during the contact of the roller 3 with the rolling stock 1. For example, the control computer 4, the maximum, minimum, average or some other value of the heat flows occurring during this time he j ⁇ means.
  • step S24 the control computer 4 determines for the selected axial position z the upper surface temperature occurring at this axial position z, ie the corresponding value of the upper surface temperature distribution T.sub.n.The control computer 4 determines the upper surface temperature from the average surface temperature valid for the selected axial position z For example, the control computer 4 may set the upper surface temperature for the selected axial position z as shown in FIG. 8 by the relationship of the contact time t obtained in step S22 and the heat flux j determined in step S23
  • T k (z) T '(z) + k- max ⁇ (j (z, ⁇ )) ⁇ ⁇ ⁇ z), k is an adaptation factor in the above relationship p, ⁇ and c p are the density, the thermal conductivity and the heat capacity of the material of the roller 3.
  • maxcp (j (z, cp)) corresponds to the heat flow determined in step S23 in the event that the maximum occurring heat - River j is used.
  • step S8 of FIG. 2 that is to say the determination of the wear d
  • various possibilities also exist. These will be explained in more detail below in connection with FIGS. 9 to 11.
  • the wear d usually includes a thermal wear component dT.
  • ⁇ ⁇ is the plastic strain of the surface of the roller 3 which occurs during a single revolution of the roller 3.
  • the thermal wear dT is proportional We ⁇ sentlichen for plastic elongation ⁇ ⁇ proportional to the rolled length 1 and inversely proportional to the Ra ⁇ dius R of the roll 3.
  • the radius R may alternatively pick ⁇ plattete or unloaded radius of the roll Be 3.
  • the determination of the plastic strain ⁇ ⁇ is based on the corresponding upper surface temperature T "(z) and a further temperature TZ, this preferably spatially resolved in the axial direction, ie for the respective axial position z.
  • T upper surface temperature
  • TZ further temperature
  • the (at least one) further temperature TZ may be a temperature related to the surface of the roll 3. It may, for example, the average temperature T "(z) at the corresponding axial position act z. Preferably, it is a minimum at the respective Axialposi ⁇ tion z on the surface of the reel 3 occurring temperature. Alternatively, it is in the further Temperature TZ act at a temperature that occurs at the relevant axial position z inside the roller 3.
  • a temperature from a relatively near-edge layer or a temperature from the core of the roller 3 can be used.
  • a temperature at the surface of the roller 3 is preferably used when the volume temperature distribution VT is also spatially resolved in the tangential direction.
  • the pre ⁇ hens as is possible even when the bulk temperature distribution VT is not spatially resolved in the tangential direction.
  • a use of a temperature occurring inside the roller 3 is likewise possible in both cases.
  • the wear also often includes an abrasive wear component dA.
  • the abrasive wear component dA is in
  • the control computer 4 determines the thermal wear component dT in a step S31.
  • the determination of the thermal wear component dT for example, so he follow ⁇ , as already explained above.
  • a step S32 the control computer 4 determines a surface hardness H of the roller 3, if necessary spatially resolved in the axial direction.
  • the surface hardness H is determined on the one hand as a function of the material properties of the surface of the roller 3 and on the other hand as a function of the upper surface temperature distribution T.
  • the control computer 4 determines the abrasive wear component dA using the surface hardness H of the roller 3 determined in step S32.
  • the control computer 4 determines the wear d by sum. of the thermal wear component dT and the abrasive wear component dA.
  • the control computer 4 can, for example, according to FIG 11 ei ⁇ ne functional relationship use, in which the Oberflä ⁇ chenhärte H, the rolled length 1 and the contact angle received.
  • Determined ⁇ development of the abrasive wear component dA is preferably as shown in FIG 11, additionally, the Tempe ⁇ temperature T and / or the material composition of the rolling material 1 a.
  • the Tempe ⁇ temperature T and / or the material composition of the rolling material 1 a for example, as shown in FIG.
  • the abrasive wear component dA is in this case proportional to the yield stress o, the rolled length 1 and the contact angle and inversely proportional to the ermit ⁇ telten surface hardness H.
  • the temperature T and / or the "chemistry" of the rolling stock 1 can be taken into account in the context of Zundermo ⁇ dellen, the result has influence on the modeling of the abrasive Versch emergeanteils dA.
  • the determination of the heat flow distribution WT preferably takes place on the basis of process variables I related to the rolling of the rolled stock 1 by the roll 3, in cooperation with the initial surface temperature distribution T " I model-based are expected expected quantities, which are supplied to the computer 4 from the outside, see FIG 1.
  • the process variables I actual sizes that are detected during the rolling of the rolling stock 1 by the roller 3, see also FIG. 1.
  • Mixed forms are also possible.
  • the control computer 4 it is possible for the control computer 4 to predefine modeled ⁇ expected expected process variables I up to a point in the future.
  • control computer 4 initializes in one
  • Step S41 the volume temperature distribution VT.
  • the step S41 corresponds to the step Sl of FIG. 2.
  • the control computer 4 accepts (or determines) the schedule data SP.
  • the stitch plan data SP define - among other things - the mentioned model-supported, expected future process variables I.
  • Step S42 corresponds to a partial embodiment of step S2 of FIG. 2.
  • Step S43 the control computer 4 receives actual variables of the rolling process which describe the rolling of the rolling stock 1 by the roller 3 under consideration.
  • Step S43 corresponds to a further partial embodiment of step S2 of FIG. 2.
  • step S44 the control computer 4 uses the actual variables of step S43 to determine an actual crowning and the current wear d.
  • the step S44 corresponds Wesentli ⁇ chen a summary of the steps S3 to S8 of Figure 2, based on the exploitation of the actual values of the step S43.
  • step S45 the control computer 4 calculates the adjustment ⁇ sizes S, which influence the rolling of the rolling stock. 1
  • the manipulated variables S as already mentioned, acting on the look ⁇ te roller 3 and / or to other rollers 3 on the other rolling stands. 2
  • control computer 4 It is possible for the control computer 4 to carry out the procedure of FIG. 12 in real time during the rolling of the rolling stock 1. In this case, there is a step S46, in which the control computer 4 controls the rolling mill in accordance with the determined manipulated variables S. Alternatively, of course, the control computer 4, the procedure of FIG 12 also after rolling of the rolling stock 1 run. In this case, step S46 may be omitted.
  • a step S47 the control computer 4 determines a prognosis for the thermal crowning and the wear d.
  • the step S47 corresponds essentially to an implementation of the step S44, but in contrast to the step S44, not the detected actual variables of the rolling process are evaluated, but the stitch plan data SP.
  • a step S48 further measures can be taken depending on the expected future wear d determined in step S47. For example, a roll change can be initiated.
  • the determined wear forecast can also be output, for example, to the operator 12 of the rolling mill.
  • step S49 the control computer 4 checks whether the pre ⁇ hens example of FIG should be terminated 12th Depending on the result of the test of step S49, the control computer 4 proceeds to a step S50 or terminates the procedure of FIG. 12.
  • step S50 the control computer 4 checks whether it has specified further stitch plan data SP or has been determined by it. Depending on the result of the check of step S50, the control computer 4 returns to step S42 or step S43.
  • step S42 or step S43 was above essentially a procedure erläu ⁇ tert that is performed in real time during the rolling of the rolling material 1 by the roller. 3
  • the superiors may hens as performed after rolling the rolling stock 1 ⁇ to.
  • the steps S42 and S45 to S48 and the step S50 omitted.
  • a step S51 is present, in which the respectively determined Ver ⁇ wear d - optionally broken down by thermal wear and abrasive wear dT dA - is issued to the operator 12 of the mill.
  • step S43 to S46 may be omitted.
  • step S47 wei ⁇ terhin preferably steps S56 and S57 are arranged downstream in this case.
  • step S56 the control computer 4 determines based on the in
  • step S47 wear d determines the required manipulated variables S.
  • step S57 the control computer 4 stores the manipulated variables S, so that they are available for later activation of the rolling mill.
  • Step S48 may still be present. Alternatively, it can be omitted. It may alternatively be upstream or downstream of steps S56 and S57.
  • the present invention has many advantages. Insbeson ⁇ particular, the roll life, ie the time between installation and removal of the rollers 3, are optimized. Also, often the quality of rolled rolled stock 1 can be optimized.

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Abstract

Pour la détermination de l'usure (d) d'un cylindre (3) pour le laminage de produits à laminer (1), une distribution de température volumique (VT) du cylindre (3) est actualisée sur la base d'une distribution de flux thermique (WT) apparaissant à la surface du cylindre (3) au moyen d'un modèle de température du cylindre (3). La distribution de température volumique (VT) est résolue spatialement au moins dans la direction axiale et la direction radiale du cylindre (3). La distribution de flux thermique (WT) est résolue spatialement dans la direction axiale et la direction tangentielle du cylindre (3). L'usure (d) du cylindre (3) est déterminée au moyen d'un modèle d'usure (11). Dans le cadre du modèle d'usure (11), sur la base de la distribution de température volumique (VT) actualisée et/ou de la distribution de flux thermique (WT), au moins une température de surface supérieure (T'') est déterminée, celle-ci apparaissant en des points définis de la surface du cylindre (3), le point correspondant étant au contact du produit à laminer (1). L'usure (d) du cylindre (3) est déterminée avec prise en compte de la température de surface supérieure (T'') du cylindre (3).
PCT/EP2011/058155 2010-08-27 2011-05-19 Procédé de détermination de l'usure d'un cylindre pour le laminage de produits à laminer WO2012025266A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP11723400.5A EP2595768B1 (fr) 2010-08-27 2011-05-19 Procédé de détermination de l'usure d'un cylindre pour le laminage de produits à laminer
CN201180041458.6A CN103097046B (zh) 2010-08-27 2011-05-19 用于轧制轧件的轧辊的磨损的测定方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP10174341A EP2422894A1 (fr) 2010-08-27 2010-08-27 Procédé d'établissement de l'usure d'un laminoir destiné à laminer des produits à laminer
EP10174341.7 2010-08-27

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WO2012025266A1 true WO2012025266A1 (fr) 2012-03-01

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CN113518946A (zh) * 2019-03-11 2021-10-19 首要金属科技意大利有限责任公司 用于监测轧机中的间隙的方法和系统
CN114492024A (zh) * 2022-01-25 2022-05-13 江苏沙钢集团淮钢特钢股份有限公司 基于数学模型的棒材轧制的轧辊磨损预测方法

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CN113518946A (zh) * 2019-03-11 2021-10-19 首要金属科技意大利有限责任公司 用于监测轧机中的间隙的方法和系统
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CN114492024A (zh) * 2022-01-25 2022-05-13 江苏沙钢集团淮钢特钢股份有限公司 基于数学模型的棒材轧制的轧辊磨损预测方法

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CN103097046B (zh) 2016-05-04
EP2595768A1 (fr) 2013-05-29

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