EP2910316A1 - Précommande simple du pas de filetage d'un ébaucheur - Google Patents

Précommande simple du pas de filetage d'un ébaucheur Download PDF

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Publication number
EP2910316A1
EP2910316A1 EP14156158.9A EP14156158A EP2910316A1 EP 2910316 A1 EP2910316 A1 EP 2910316A1 EP 14156158 A EP14156158 A EP 14156158A EP 2910316 A1 EP2910316 A1 EP 2910316A1
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EP
European Patent Office
Prior art keywords
rolling
rolled
wedge
flat
stock
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14156158.9A
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German (de)
English (en)
Inventor
Matthias Kurz
Uwe Rietbrock
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Primetals Technologies Germany GmbH
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Primetals Technologies Germany GmbH
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 Primetals Technologies Germany GmbH filed Critical Primetals Technologies Germany GmbH
Priority to EP14156158.9A priority Critical patent/EP2910316A1/fr
Priority to EP15702668.3A priority patent/EP3107666B1/fr
Priority to CN201580009659.6A priority patent/CN105980072B/zh
Priority to PCT/EP2015/051118 priority patent/WO2015124363A1/fr
Priority to BR112016018791-1A priority patent/BR112016018791B1/pt
Priority to US15/120,726 priority patent/US10456818B2/en
Publication of EP2910316A1 publication Critical patent/EP2910316A1/fr
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/28—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/06—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged vertically, e.g. edgers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/22—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories for rolling metal immediately subsequent to continuous casting, i.e. in-line rolling of steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/24—Automatic variation of thickness according to a predetermined programme
    • B21B37/26—Automatic variation of thickness according to a predetermined programme for obtaining one strip having successive lengths of different constant thickness
    • 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
    • B21B37/68—Camber or steering control for strip, sheets or plates, e.g. preventing meandering
    • 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
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
    • 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
    • B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/12—Arrangement or installation of roller tables in relation to a roll stand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2265/00—Forming parameters
    • B21B2265/02—Tension
    • B21B2265/06—Interstand tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2265/00—Forming parameters
    • B21B2265/12—Rolling load or rolling pressure; roll force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/04—Lateral deviation, meandering, camber of product
    • 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
    • B21B2275/06—Product speed

Definitions

  • the present invention further relates to a control program for a control device of a rolling mill, the control program comprising machine code, which can be executed by the control device, wherein the processing of the machine code by the control device causes the control device to operate the rolling mill according to such an operating method.
  • the present invention further relates to a control device of a rolling mill, wherein the control device is programmed with such a control program.
  • a quality feature when rolling flat rolled stock is the size of a wedge, i. an asymmetric thickness distribution of the flat rolled material over the width of the flat rolled material seen. As a rule, a thickness wedge is undesirable.
  • WO 2006/063 948 A1 discloses an operating method for a rolling mill having at least one rolling stand for rolling a strip in a plurality of rolling operations.
  • a computer determines mill stand settings for each rolling process on the basis of a rolling mill model for each rolling process, based on input parameters of the strip expected for this rolling operation, and transmits these settings to the mill stand performing this rolling operation.
  • the rolling stand adjusts according to the transmitted settings and rolls the belt accordingly.
  • the computer also determines an outlet-side thickness wedge expected during this rolling process. By means of a measuring device dependent on the actual outlet side thickness wedge of the tape measured variable is detected and transmitted to the computer. On the basis of the measured variable and the expected outlet-side thickness wedge, the computer adapts the model of the rolling train.
  • one of the input parameters is an inlet-side thickness wedge expected during the respective rolling process.
  • an operating method for a rolling mill with at least one rolling stand for rolling a strip is known.
  • a control computer for the rolling mill is given framework parameters which describe the rolling stand.
  • the control computer sets quantities which describe the rolling of the flat rolling stock in the rolling mill stand.
  • the sizes used, in conjunction with the framework parameters and sizes describing the flat stock prior to rolling in the mill stand, describe the nip and its asymmetry that results from rolling the stock in the mill.
  • the control computer determines a discharge-side thickness wedge and / or a discharge-side saber by means of a model of the rolling train, which are expected for the flat rolling stock during rolling in the rolling mill stand.
  • the control computer is given a wedge strategy from the outside, ie criteria by means of which the control computer can determine what the outlet-side thickness wedge should be.
  • the control computer determines optimized control variables for the rolling stand.
  • WO 2006/119 984 A1 is a method for hot rolling of slabs known, wherein the slabs are rolled in at least one roughing to Vorb skilledn.
  • the Vorbandgeometrie is specifically influenced to reshape a saber or wedge slab in a straight and wedge-free Vorband.
  • side guides are arranged in front of and behind the roughing stand, which can be employed on the rolling stock and by means of which transverse forces are exerted on the rolling stock in order to prevent the formation of a saber in the rolling stock.
  • WO 2006/119 984 A1 represents an advance since, according to the doctrine of WO 2006/119 984 A1 at least one Straight and wedge-free opening band can be generated.
  • the doctrine of WO 2006/119 984 A1 But only leads to a significant success, if not for other reasons in the finishing line the straight and wedge-free opening band again a wedge and / or a saber are imprinted.
  • WO 2013/174 602 A1 is an additional embodiment of the doctrine of WO 2006/119 984 A1 known, in which the side guides additionally have a roller which can be made in the transverse direction of the rolling stock, so that by means of the roller, a transverse force can be exerted on the rolling stock.
  • the object of the present invention is to provide possibilities by means of which a thickness wedge in the finish-rolled flat rolling stock can be avoided or at least reduced in a simple manner.
  • the present invention is thus based, first, on the knowledge that it is irrelevant whether there is a thickness wedge deviating from the target wedge in intermediate stages, for example in the opening band. It is only decisive that the target wedge is achieved in the final product, ie in the flat rolling stock after finish rolling. On the other hand, the present invention is based on the finding that in the event that the thickness wedge deviates from the target wedge, this deviation for the next, not yet rolled flat rolling stock can be counteracted by appropriate adjustment of the roll stand during rough rolling. In this case, no elaborate modeling of the rolling process is required. It is sufficient if the deviation of the thickness wedge from the target wedge tends to be counteracted. This is ensured by the procedure according to the invention.
  • the procedure according to the invention presupposes that the results, in particular the resulting thickness wedge, can be reproduced from rolling stock to rolling stock.
  • this is the case in practice, at least within uniform flat rolled goods. This often applies even if wedge adjustments are made during finish rolling during the respective finishing passes.
  • Such Keilanwolfen can be made for example manually by an operator of the rolling mill to make the tape low. Because the decisive factor is only the reproducibility of the thickness wedge, which is still given in this case.
  • the first target wedge may be determined as needed. Often, the first target wedge will be zero. However, it is also possible that the first target wedge has a value other than zero.
  • a particularly simple embodiment of the present invention consists in that a change in the first wedge position is proportional to the deviation of the first thickness wedge present in the finish-rolled respective first flat rolling stock from the first target wedge. Already this procedure leads to very good results. However, it is also possible to incorporate further values into the determination of the change of the first wedge position. For example, the change of the first wedge position from a certain first flat rolling stock to the next first flat rolling stock can be limited to a certain value. Furthermore, the first wedge adjustment is limited as such already due to structural conditions of the rolling mill exporting mill stand.
  • first wedge position only when the deviation of the first thickness wedge from the first target wedge is above a threshold, that is, slight deviations of the first thickness wedge from the first target wedge does not lead to a correction of the first wedge adjustment.
  • other variables for example a bandwidth, into the determination of the change of the first wedge position.
  • the change in the first wedge setting increases monotonically with the ratio of a mean rolling stock thickness of the respective first flat rolled stock after roughing and after finish rolling. This makes it possible to track the first wedge adjustment even if different Endwalzdicken to be rolled.
  • a RAC takes place during the rolling of the respective first flat rolling stock.
  • the term “RAC” stands for "roll alignment control”.
  • Roll alignment control means that during rolling, reaction is made to differential rolling forces that occur between the operating side and the drive side and / or lateral migration of the rolling stock.
  • an additional wedge adjustment of the corresponding roll stand is determined in order to counteract the differential rolling forces and / or the migration of the rolling stock.
  • the roll alignment control will take effect during the respective rolling process.
  • the number of rolling stands in addition to the first flat rolled goods are successively supplied with a second second flat rolling stock via a second feeding path.
  • a multi-stand finishing train with upstream roughing slabs can be supplied on the one hand directly from a continuous casting plant and on the other hand from a further continuous casting plant and / or via a slab bearing.
  • the second flat rolled goods are also rolled by the number of rolling stands.
  • the respective second flat rolled stock in the number of rolling stands is first rolled in at least one roughing pass with a second wedge setting and then Finished in finishing stitches.
  • a second thickness wedge present in the finish-rolled respective second flat rolling stock is detected by measurement. Furthermore, the second thickness wedge is here compared with a second target wedge and determined on the basis of a deviation of existing in finish-finished second flat rolling stock second thickness wedge of the second target wedge and the second wedge adjustment a new second wedge position for the at least one roughing pass. Finally, here too the second wedge adjustment is set in the at least one roughing pass for the second flat rolling stock to be rolled next according to the newly determined value of the second wedge setting, so that the second flat rolling stock to be rolled next in the at least one roughing pass with the newly determined one Value of the second wedge adjustment is pre-rolled. Due to the separate treatment of the first rolled goods and the respective change of the wedge adjustment on the one hand and the second rolled goods and the determined change of the wedge adjustment determined for these rolled goods, the optimum wedge positions can be determined separately for the first and second rolled goods.
  • the second target wedge may be determined as needed. Often the second target wedge will have the value zero, analogous to the first target wedge. However, again analogous to the first target wedge, it is also possible for the second target wedge to have a value other than zero.
  • the procedure can also be extended to other delivery routes.
  • a control program of the type mentioned above is configured in that the processing of the machine code by the control device causes the control device to operate the rolling mill in accordance with an operating method according to the invention.
  • control device with the features of claim 8.
  • a control device of the type mentioned above is programmed with a control program according to the invention.
  • a rolling mill of the type mentioned above is configured in that the rolling mill has a control device according to the invention, which operates the rolling mill according to an operating method according to the invention.
  • FIG. 1 shows an embodiment of a rolling mill, in which a single roughing stand 1 and several finishing stands 2 - usually between four and seven finishing stands 2 - are present. At least the finishing stands 2 are passed through flat rolling stock 3 in succession.
  • the flat rolled goods 3 are rolled in the finishing stands 2 each in a single rolling pass (finish stitch).
  • the flat rolled goods 3 are made of metal, for example steel or aluminum. However, other metals are possible, such as copper.
  • each finishing stand 2 performs a single roll pass. It is possible that the roughing stand 1 reversingly performs several rolling passes (Vorwalzstiche). In connection with this frequently encountered embodiment - ie that a single roughing stand 1 and several finishing stands 2 are present, the roughing stand 1 performs reversing several rolling passes and each finishing stand 2 executes a single rolling pass - the present invention is explained below. However, the present invention is not limited to this embodiment.
  • each roughing stand 1 may be present, which are passed through in succession by the flat rolled goods 3.
  • the roughing stands 1 can be reversed several times by the flat rolled goods 3.
  • a single roughing stand 1 could be present, which is traversed by the flat rolling stock 3 in a single roll pass.
  • the finished scaffolds 2 would continue to be passed successively by the flat rolling stock 3, with each finishing scaffold 2 each performing a single rolling pass.
  • the respective flat rolled stock 3 is not rolled in individual one of the roughing passes, that is, it is not reduced in thickness.
  • the rolling stands 1, 2, the flat rolled goods 3 are successively fed via a Zunaturalweg 4.
  • the Zugarweg 4 may be formed, for example, as a continuous casting with downstream compensation furnace.
  • the Zugarweg 4 may be designed as a ferry with downstream furnace (for example, a tunnel furnace).
  • the Zugarweg 4 may be formed as a slab store with downstream furnace. Other embodiments are possible.
  • the respective flat rolling stock 3 in the rolling stands 1, 2 in respective rolling passes (reversing the Vorgerüst 1 in several Vorwalzstichen, in the finishing stands 2 in a respective finishing stitch) is first pre-rolled and then finish rolled.
  • the rough rolling in the roughing stand 1 takes place with a wedge setting ds of the roughing stand 1.
  • the roughing stand 1 is thus adjusted during the respective roughing pass such that the rolling gap s of the roughing stand 1 as shown in FIG FIG. 2 Seen over the width b of the roughing stand 1 extends wedge-shaped.
  • ds SDS - SOS
  • sDS and sOS are the rolling gap sDS on the drive side and the rolling gap sOS on the operating side of the roughing stand 1.
  • the wedge engagement ds is in FIG. 2 clearly exaggerated for better illustration.
  • the wedge adjustment ds can be the same for all roughing passes.
  • the wedge adjustment ds of roughing pass be individually determined to roughing pass.
  • the wedge setting ds of the respective roughing pass can be correlated with the outlet-side desired thickness of the respective roughing pass, in particular be proportional to the outlet-side desired thickness of the respective roughing pass. Other approaches are possible.
  • the finished stitches are executed.
  • the respective flat rolling stock 3 is therefore finish-rolled in the finishing stands 2 in the finishing passes. If necessary, the finished scaffold 2 can be acted upon during the execution of the respective finishing stitch - for example in the context of roll alignment control - with a respective wedge adjustment.
  • the finished scaffolding 2 - more precisely: the finishing screed 2 executing the last finishing pass - is followed by a thickness measuring device 5.
  • a thickness wedge dd which is present in the finish-rolled respective flat rolling stock 3 is measured.
  • dDS and dOS in equation 2 are the rolling stock thickness dDS on the drive side and the rolling stock thickness sOS on the operating side of the flat rolled stock 3 on the outgoing side of the final finishing stitch finishing screed 2.
  • the thickness key dd is in FIG.
  • the thickness wedge dd is also possible to determine the thickness wedge dd on the basis of other variables. For example, it is common to measure the rolling stock thickness dDS and dOS not directly on the side edges of the flat rolled stock 3, but at a distance from the side edges. The distance may be 25 mm or 40 mm, for example. Also, another meaningful value can be as a distance be used by the side edges. It is also possible to detect the rolled stock thickness at several points over the rolling stock width and, based on the detected rolling stock thickness, to optimize, for example, a parameterized description of the rolling stock thickness as a function of the location in the width direction. In this case, one of the parameters of the parameterized description, which is characteristic for the asymmetry of the rolling stock thickness, can be used to determine the thickness wedge dd. Other approaches are possible.
  • the thickness measuring device 5 is according to FIG. 1 connected to a control device 6 data technology.
  • the control device 6 is programmed with a control program 7.
  • the control program 7 comprises machine code 8, which can be processed by the control device 6.
  • the processing of the machine code 8 by the control device 6 causes the control device 6 to operate the rolling mill according to the operating method described above and also explained below.
  • the control device 6 controls the rolling stands 1, 2 and the transport of the flat rolled goods 3 through the rolling mill.
  • the controller 6 continues to perform a RAC during rolling of the respective flat rolled stock 3.
  • the newly determined wedge engagement ds applies to the flat rolling stock 3 to be rolled next.
  • the flat rolling stock 3 to be rolled next is therefore pre-rolled in the roughing pass - generally: in the at least one roughing pass - with the new wedge setting ds, for example according to Equation 3 ,
  • the control device 6 determines the change dds of the wedge engagement ds such that the change dds of the wedge engagement ds counteracts the deviation.
  • the change dds of the wedge engagement ds is proportional to the deviation of the thickness wedge dd of the target wedge dZ present in the finish-rolled respective flat rolling stock 3.
  • k is a proportionality factor chosen according to magnitude and sign.
  • the change dds of the wedge engagement ds increases monotonically with the ratio of a mean rolling stock thickness D, d of the respective flat rolled stock 3 after the rough rolling and after the finish rolling.
  • D is here the average rolling stock thickness of the respective flat rolling stock 3 after the rough rolling, d the average rolling stock thickness after the finish rolling.
  • Equation 5 is in Equation 5 another, proportional to the two rolling stock D, d proportionality factor.
  • the control device 6 may be aware of this rolling stock thickness D, for example due to the setting of the roughing stand 1 during the execution of the last roughing pass of the respective flat rolled stock.
  • the average rolling stock thickness d of the respective flat rolling stock 3 after the finish rolling preferably a detection by the thickness measuring device 5 or another, in FIG FIG. 1 not shown further thickness measuring device.
  • the procedure of FIG. 4 builds on the approach of 1 to 3 on.
  • the rolling mill according to FIG. 4 however, side guides 9 on.
  • the side guides 9 are according to FIG. 4 arranged in front of and behind the roughing stand 1.
  • the side guides 9 are made during the pre-rolling of the flat rolled material 3 to the sides of the flat rolled material 3.
  • the side guides 9 exert on the input side and on the output side transverse forces FE, FA on the flat rolling stock 3.
  • the transverse forces FE, FA prevent both the inlet side and outlet side saber formation of the flat rolled stock 3 during roughing.
  • the side guides 9, as shown in FIG FIG. 4 be elongated.
  • the side guides 9 - analogous to that in the WO 2013/174 602 A1 described procedure - have a role or a similar element which can be made in the transverse direction to the respective flat rolling stock 3, so that by means of the roller, a transverse force can be exerted on the respective flat rolling stock 3.
  • side guides 9 are arranged both before and behind the roughing stand. In individual cases it may be sufficient to arrange a side guide 9 only in front of or behind the roughing stand 1. The other side guide 9 is not available in this case. Furthermore, it is possible to replace the front and / or the rear side guide 9 - regardless of whether the respective other side guide 9 is present or not - by a stuffer.
  • the embodiment of the rolling mill according to FIG. 5 corresponds over long distances with the design of the rolling mill according to FIG. 1 , According to FIG. 5 However, the rolling mill not only the Zunaturalweg 4, but additionally a further Zunaturalweg 10.
  • the two Zunaturalwege 4, 10 are hereinafter referred to as the first Zuindustrialweg 4 and second Zuindustrialweg 10. Also via the second Zuindustrialweg 10, the number of rolling stands 1, 2 successively a plurality of flat rolling stock 11 is supplied.
  • the flat rolling stock 3, 11 fed to the rolling stands 1, 2 via the respective feed path 4, 10 are referred to below as first flat rolled goods 3 and second flat rolled goods 11.
  • the second flat rolled goods 11 are rolled in the rolling mill in a completely analogous manner as the first rolled goods 3.
  • the second flat rolled goods 11 are rolled by means of the number of rolling stands 1, 2, wherein the respective second flat rolling stock 11 is pre-rolled by means of the number of rolling stands 1, 2 initially in at least one roughing pass with a respective second wedge setting ds and then in finishing passes finish rolled.
  • a second thickness wedge dd present in the finish-rolled respective second flat rolling stock 11 is also metrologically detected for the second flat rolled goods 11 and supplied to the control device 6.
  • the control device 6 compares the second thickness wedge dd with a second target wedge dZ and determined for the respective second flat rolling stock 11 based on the deviation of the second thickness wedge dd from the second target wedge dz and the second wedge ds a new second wedge ds for the at least one roughing pass. The determination can be made in a completely analogous manner as for the first flat rolled goods 3.
  • the second wedge adjustment ds is changed in the at least one roughing pass for the second flat rolling stock 11 to be rolled next.
  • the second flat rolling stock 11 to be rolled next is thus pre-rolled in the at least one roughing pass with the new value of the second wedge setting ds.
  • the decisive fact is therefore that the determination of the new wedge adjustment ds and, associated therewith, the tracking of the wedge adjustment ds for the first and second flat rolled products 3, 11 takes place independently of one another. Even if the first and second flat rolled goods 3, 11 have completely different properties (for example, different chemical compositions, different temperatures, different widths, different rolling stock thicknesses before roughing, etc.), therefore a reliable tracking of the respective wedge adjustment ds for the next rolling to be rolled respective flat rolling stock 3, 10 done.
  • first supply path 4 and the second supply path 10 may be made as needed.
  • the flat rolled products 3, 11 originate from the same source - for example, from a common slab store - but before they are fed to the rolling mill, they pass different paths, for example different furnaces.
  • the present invention thus relates to the following facts:
  • a number of rolling stands 1, 2 of a rolling mill are successively supplied with a plurality of flat rolled goods 3 made of metal via a feed path 4.
  • the flat rolled goods 3 are rolled by means of the number of rolling stands 1, 2.
  • the respective flat rolling stock 3 is initially rolled in the number of rolling stands 1, 2 in at least one roughing pass with a wedge setting ds and then finish-rolled in finishing passes.
  • a thickness wedge dd present in the finish-rolled respective flat rolling stock 3 is detected by measurement.
  • the thickness wedge dd is compared with a target wedge dZ.
  • a new wedge setting ds is determined for the at least one roughing pass.
  • the wedge adjustment ds is set in the at least one roughing pass for the next flat rolling stock 3 to be rolled in accordance with the newly determined value of wedge setting ds so that the next flat rolled stock 3 to be rolled in the at least one roughing pass has the newly determined value of Keilangna ds is pre-rolled.
  • the present invention stands out above all for its simplicity. Because no complex modeling of the rolling mill is required. Furthermore, no detection of a possible thickness wedge in the rolling stock 3, 11 before the rough rolling or between the rough rolling and the finish rolling is required. It is only necessary, after the finish rolling, to grasp the thickness wedge dd then present in the rolling stock 3, 11 and to track the wedge setting ds of the at least one roughing pass on the basis of this thickness wedge dd.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
EP14156158.9A 2014-02-21 2014-02-21 Précommande simple du pas de filetage d'un ébaucheur Withdrawn EP2910316A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP14156158.9A EP2910316A1 (fr) 2014-02-21 2014-02-21 Précommande simple du pas de filetage d'un ébaucheur
EP15702668.3A EP3107666B1 (fr) 2014-02-21 2015-01-21 Précommande simple du pas de filetage d'un ébaucheur
CN201580009659.6A CN105980072B (zh) 2014-02-21 2015-01-21 粗轧机架的楔形辊缝调整的简单预控制
PCT/EP2015/051118 WO2015124363A1 (fr) 2014-02-21 2015-01-21 Précommande simple d'un réglage par serrage de cale d'une cage dégrossisseuse
BR112016018791-1A BR112016018791B1 (pt) 2014-02-21 2015-01-21 Método de operação, programa de controle e dispositivo de controle para trem de laminação, e trem de laminação
US15/120,726 US10456818B2 (en) 2014-02-21 2015-01-21 Simple pre-control of a wedge-type roll-gap adjustment of a roughing stand

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14156158.9A EP2910316A1 (fr) 2014-02-21 2014-02-21 Précommande simple du pas de filetage d'un ébaucheur

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EP2910316A1 true EP2910316A1 (fr) 2015-08-26

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EP15702668.3A Active EP3107666B1 (fr) 2014-02-21 2015-01-21 Précommande simple du pas de filetage d'un ébaucheur

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US (1) US10456818B2 (fr)
EP (2) EP2910316A1 (fr)
CN (1) CN105980072B (fr)
BR (1) BR112016018791B1 (fr)
WO (1) WO2015124363A1 (fr)

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WO2018095717A1 (fr) * 2016-11-24 2018-05-31 Primetals Technologies Germany Gmbh Régulation de la position d'une bande par positionnement à force limitée de guides latéraux au niveau de la bande métallique et correction du positionnement des cylindres

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US11185943B2 (en) 2016-11-18 2021-11-30 Sms Group Gmbh Method and device for producing a continuous strip-shaped composite material
JP6620777B2 (ja) * 2017-03-16 2019-12-18 Ｊｆｅスチール株式会社 圧延機のレベリング設定方法および圧延機のレベリング設定装置
JP6904314B2 (ja) * 2018-07-17 2021-07-14 東芝三菱電機産業システム株式会社 熱間圧延ラインのウェッジ制御装置
EP3715000B1 (fr) 2019-03-27 2022-01-12 Primetals Technologies Austria GmbH Procédé permettant d'éviter les ondulations lors du laminage des bandes métalliques
KR20230113802A (ko) * 2021-12-24 2023-08-01 도시바 미쓰비시덴키 산교시스템 가부시키가이샤 미단 버클링 억제 장치
TWI840108B (zh) * 2023-02-02 2024-04-21 中國鋼鐵股份有限公司 金屬胚軋延方法及其系統

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EP0884118A1 (fr) * 1997-06-10 1998-12-16 Kvaerner Technology & Research Limited Procédé et dispositif pour combiner la coulée et la laminage de métaux
JPH1110215A (ja) * 1997-06-18 1999-01-19 Sumitomo Metal Ind Ltd 熱間圧延材のウエッジ制御方法
WO2006063948A1 (fr) 2004-12-15 2006-06-22 Siemens Aktiengesellschaft Procede de fonctionnement pour un train de laminoir et dispositifs correspondants
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WO2008002254A1 (fr) * 2006-06-30 2008-01-03 Abb Ab Procédé et dispositif de contrôle de l'interstice de laminage
WO2009016086A1 (fr) 2007-07-27 2009-02-05 Siemens Aktiengesellschaft Procédé de réglage d'un état d'un produit à laminer, en particulier d'un ruban de préparation
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WO2018095717A1 (fr) * 2016-11-24 2018-05-31 Primetals Technologies Germany Gmbh Régulation de la position d'une bande par positionnement à force limitée de guides latéraux au niveau de la bande métallique et correction du positionnement des cylindres

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BR112016018791A2 (pt) 2017-08-08
US20170014880A1 (en) 2017-01-19
US10456818B2 (en) 2019-10-29
CN105980072A (zh) 2016-09-28
EP3107666A1 (fr) 2016-12-28
CN105980072B (zh) 2019-04-30
EP3107666B1 (fr) 2018-06-06
BR112016018791B1 (pt) 2023-03-28
WO2015124363A1 (fr) 2015-08-27

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