EP3210681B1 - Dispositif et procédé de laminage de matériau en bande à épaisseur variable - Google Patents

Dispositif et procédé de laminage de matériau en bande à épaisseur variable Download PDF

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Publication number
EP3210681B1
EP3210681B1 EP17155391.0A EP17155391A EP3210681B1 EP 3210681 B1 EP3210681 B1 EP 3210681B1 EP 17155391 A EP17155391 A EP 17155391A EP 3210681 B1 EP3210681 B1 EP 3210681B1
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EP
European Patent Office
Prior art keywords
roller
rollers
strip
immersion
strip material
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.)
Active
Application number
EP17155391.0A
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German (de)
English (en)
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EP3210681A1 (fr
Inventor
Ingolf Günter Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tilgert Walzwerksmaschinenbau GmbH
Bilstein GmbH and Co KG
Original Assignee
Tilgert Walzwerksmaschinenbau GmbH
Bilstein GmbH and Co KG
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Publication date
Application filed by Tilgert Walzwerksmaschinenbau GmbH, Bilstein GmbH and Co KG filed Critical Tilgert Walzwerksmaschinenbau GmbH
Publication of EP3210681A1 publication Critical patent/EP3210681A1/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
    • B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
    • 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
    • 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
    • B21B37/48—Tension control; Compression control
    • B21B37/50—Tension control; Compression control by looper control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/48—Tension control; Compression control
    • B21B37/52—Tension control; Compression control by drive motor control
    • B21B37/54—Tension control; Compression control by drive motor control including coiler drive control, e.g. reversing mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/04—Thickness, gauge
    • B21B2261/05—Different constant thicknesses in one rolled product
    • 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
    • B21B2265/08—Back or outlet tension

Definitions

  • the invention relates to a device for rolling strip material with a periodically variable strip thickness, the device comprising a roll stand with a set of rollers and a setting system for adjusting the roll gap of the set of rolls, to which roll gap the strip material with an initial thickness is fed on the input side from a decoiler and from which from the strip material with the desired final thickness is fed to a reel on the output side.
  • the invention relates to a method for operating a device for rolling strip material with a periodically variable strip thickness, the device having a roll stand with a roller set and an adjustment system for adjusting the roll gap of the roll set, the strip material having an initial thickness on the input side of the roll gap Decoiler is supplied and from which the strip material with the desired, through which Roll gap certain end thickness is fed to a reel on the output side.
  • a device of the generic type and a method of a generic type are known in the prior art.
  • strip materials made of steel strip material are usually processed.
  • the prior art shows a possibility with which metal strips wound into coils in an economical manner can be unwound under tension, reduced in thickness and then rewound under tension, with a relatively constant strip thickness being provided on the inlet side and periodically variable strip thickness is to be achieved on the outlet side.
  • the speed control of the reels is also complex and can also lead to errors when operating the corresponding device.
  • the object of the invention is to provide an alternative solution for a corresponding device or a corresponding method which does not have any of the features of the force control of a compensating or dancer roll and a speed control of the reels Makes use of and which, in adaptation to the high strip throughput speeds, enables a faster automatic adjustment of the roll gap and thus a high quality of a periodically variable strip material to be achieved, taking into account the different strip speeds at the entry and exit of the roll gap.
  • the invention proposes that a roller arrangement with an immersion roller around which the strip material is guided is arranged both between the uncoiler and the roll stand and between the roll stand and the reel, and that the immersion rollers at a constant roller speed of the roll gap determining rolls of the roll stand depending on the position of the Rollers are position-controlled in order to compensate for the speed changes of the rolling stock at the inlet and at the outlet of the roll stand, and that the decoiler and the coiler are operated with tension control, and that a machine control is provided which detects the position of the rolls for a predeterminable roll gap and by means of which the Submersible rollers can be position-controlled depending on this.
  • the immersion rollers are position-controlled directly by the setting of the roll gap, which as a result leads to a significantly faster correct setting with changing roll gaps and to an exact rolling result.
  • both the decoiler and the coiler are operated with tension control, which is particularly advantageous for the use of the device.
  • a support roller for the strip material over which the strip material is guided is arranged in front of each dip roller and behind each dip roller, and that each support roller has a strip length detection device and / or a strip speed monitoring device.
  • the decoiler and the decoiler are provided with a tension measuring device, by means of which the current supply to the drive motors of the reels can be regulated.
  • the rolls of the roll stand that determine the roll gap rotate at a constant roll speed.
  • a method according to the invention is characterized in that a roller arrangement with an immersion roller which is adjustable transversely to the direction of travel of the strip material and around which the strip material is guided is arranged both between the uncoiler and the roll stand and also between the roll stand and the reel, the immersion rollers depending on the position of the rolls of the roll stand are position-controlled so that changes in speed compensate for changes in speed of the rolling stock at the inlet and at the outlet of the roll stand, and that the decoiler and the coiler are operated in a controlled manner.
  • the strip length and the speed of the strip material passing through are recorded in front of and behind each plunger roller and are fed to a control system for the rolling mill, from which signals are sent from the recorded data Position detection and / or correction of the position of the submerged rollers can be generated.
  • the tensile forces of the reels are recorded and the recorded data are fed to a control device, by means of which the power supply to the drive systems of the reels is regulated in such a way that the reel tension is adapted to the requirements from the operating parameters becomes.
  • the pitch of the rolls is recorded for a predetermined roll gap and these are fed as signals to a control device, by means of which the plunger rollers are set in a desired movement which is assigned to the roll gap and is stored in the control as a data pattern.
  • the rolls of the roll stand which determine the roll gap are operated at a constant roll speed.
  • FIG. 1 a device according to the invention for rolling strip material 1 with a periodically variable strip thickness is shown in general.
  • the device is shown schematically in a side view.
  • the direction of flow of the strip material is indicated at 2.
  • the device comprises a roll stand 3, of which the essential components, namely a roll set with two rolls 4 and 5, are shown.
  • an adjustment system 6 is shown schematically, which is designed to adjust the roll gap of the roll set 4, 5.
  • the roll gap which in particular Figure 2 and 3 is clearly visible, is set according to the desired strip thickness to be produced.
  • the strip material 1 is fed to the roll gap with an initial thickness on the input side from a decoiler 7 and from the roll gap the strip material 1 is fed to the reel 8 with the desired final thickness on the output side.
  • a roller arrangement with at least one plunger roller 9 or 10 is arranged between the uncoiler 7 and the roll stand 3 and also between the roll stand 3 and the reel 8, a roller arrangement with at least one plunger roller 9 or 10 is arranged.
  • tape guide rollers 13, 14, 15, 16 are arranged, with a further guide and deflection roller 17 between the guide roller 13 and the uncoiler 7 and also between the guide roller 16 and the reel 8 a further guide and deflection roller 18th arranged.
  • the continuous strip material 1 is guided around the rollers 17, 13, 9, 14 and 15, 10, 16, 18, respectively.
  • the plunger rollers can be adjusted by means of an actuator 19 or 20 in the direction of the movement arrows 11 or 12 upwards or downwards in the plane of the drawing and are at a constant roller speed of the rollers 4, 5 of the roll stand 3 which determine the roller gap as a function of the Positioning of the rollers 4, 5 in a position-controlled manner in order to compensate for the changes in speed of the rolling stock, that is to say of the strip material 1, at the inlet and at the outlet of the roll stand 3.
  • the uncoiler 7 and the reel 8 are operated with tension control.
  • a machine controller 27 which records and processes or stores the control values for the adjustment of the rolls 4, 5 for a predeterminable roll gap and by means of of which the immersion rollers 9, 10 are position-controllable in dependence thereon.
  • the machine controller 27 communicates with the setting system 6, with the belt length detection devices and belt speed monitoring devices 21, 22, 23, 24 with the actuating devices 19, 20 for the plunger rollers 9, 10, so that the machine controller 27 adjusts the rollers 4, 5 for the predetermined roll gap and the immersion rollers 9, 10 are position-controlled depending on it.
  • the entire area from the uncoiler 7 to the roll stand 3 is referred to as the entry area and the area from the roll stand 3 to the reel 8 is referred to as the exit area.
  • the changes in speed of the rolling stock (strip material 1) in the inlet and outlet of the roll stand 3, caused by the rolling of periodically variable strip thicknesses at a constant roller speed, are compensated for by the movement of the two plunging rollers 9 and 10.
  • the immersion rollers 9, 10 are position-controlled. The control takes place directly from the adjustment of the rollers 4, 5 in Connection with signals for the rolled strip length.
  • the operation of the two reels 7 and 8 is tension-controlled.
  • the aim is to derive the movement of the immersion rollers 9, 10 directly from the operating parameters of the rolling process.
  • the direction of movement and the type of movement (constant speed, acceleration or deceleration) of the plunging rollers 9, 10 are to be determined by the profile of the rolled material.
  • the immersion rollers 9, 10 move periodically. Each period of the immersion rollers 9, 10 in the inlet and outlet is assigned exactly one rolling period.
  • the profile of the rolled material of a rolling period L is divided into segments.
  • the individual segments each comprise areas with constant strip thickness (a with s 1 and b with s 2 ) and with variable strip thickness (Y and Z).
  • a segment in the outlet can always be of the same cross section and thus be assigned to the same-mass segment in the roller inlet (a E and b E as well as y E and z E with the input strip thickness s). For a rolling period L, this results in the strip length of the same mass in the inlet L E.
  • An average strip thickness s M in the outlet can be calculated from the individual segments of a rolling period. This average strip thickness is equivalent to the average speed at the roll outlet (V Am ) and thus also determines the average speed at the infeed (V EM ). The reel speeds in the inlet and outlet then correspond to these average speeds, as if the incoming strip of thickness s were rolled to thickness s M under constant conditions.
  • the movements of the roll adjustment and thus the roll profile are also decisive for the current speed.
  • the infeed speed is higher with a small stitch decrease than with a large stitch decrease.
  • the segments in the outlet can always have the same cross-section in the roller inlet assign. An average speed in the inlet can then be determined from the segments of a complete period, and the movement of the immersion rollers 9, 10 can also be determined according to segments.
  • the type and direction of the immersion roller movements 11, 12 thus result from the rolling parameters.
  • the rolling profile of a period L that is running out is compared in segments with a section of the same length L with the same thickness and the average thickness s M.
  • the segment b with the thickness s 2 is thicker than the average thickness s M. This means that the speed of the outgoing belt v A2 is lower than the average speed v AM . To compensate for this, a constant upward movement of the plunger is required.
  • the segment Z is divided into two sections by crossing the thickness of the rolled profile with the average thickness (Z 1 and Z 2 ). In the area Z 1 , the thickness is reduced to the average thickness. This means that the speed of the outgoing belt is accelerated up to the average speed v AM . At the crossing point, the average speed and the speed of the outgoing belt are identical. For the diving roller, this means that the upward movement of the diving roller is braked and the roller reaches its top dead center at the crossing point. The thickness increases in the area Z 2 reduced to thickness s 1 . The speed of the outgoing belt is accelerated up to the speed v A1 . The immersion roller is accelerated downwards in this area.
  • the segment a is thinner than the average thickness s M with the thickness s 1 .
  • the speed of the outgoing belt v A1 is therefore greater than the average speed v AM .
  • the plunger compensates for this by a constant downward movement.
  • segment Y the speed of the outgoing strip is reduced to the speed v A2 .
  • area Y 1 the downward movement is braked to bottom dead center and in area Y 2 , the plunger is accelerated upward again.
  • the control of the immersion roller movement in the inlet follows the immersion roller control of the outlet.
  • segment b E the speed of the incoming belt v E2 is higher than the average speed and in segment a E the speed v E1 is lower.
  • the immersion roller movement compensates for this and goes up at a constant speed in segment b E and also down in segment a E.
  • the segments Z E and Y E are also characterized by braking, dead center and acceleration. The dead points are controlled simultaneously with the dead points on the outlet side.
  • the rollers before the entry and after the exit of an immersion roller are each provided with pulse generators for tape length detection and speed monitoring.
  • the signals for the plunger roller movement can therefore be precisely matched to the roll position and thus to the roll profile.
  • Corrections may be necessary, for example, if the influence of the roller diameter becomes so great during very fast movements of the roll adjustment that the material parts that are additionally displaced or released in the inlet influence the plunger roll movement or if thickness deviations of the strip influence the rolling process.
  • the invention is not limited to the exemplary embodiments, but is often variable within the scope of the disclosure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Metal Rolling (AREA)

Claims (9)

  1. Dispositif de laminage d'un matériau en bande (1) d'une épaisseur de bande périodiquement variable, le dispositif comportant une cage de laminage (3) avec un jeu de cylindres et un système d'ajustage (6) pour l'ajustage de l'emprise du laminoir du jeu de cylindres, au côté d'entrée de cette emprise du laminoir le matériau en bande (1) ayant une épaisseur initiale étant alimenté à partir d'une débobineuse (7) et à partir du côté de sortie de laquelle le matériau en bande (1) avec l'épaisseur finale respectivement désirée étant alimenté à une bobineuse (8), caractérisé en ce qu'entre la débobineuse (7) et la cage de laminage (3) aussi bien qu'entre la cage de laminage (3) et la bobineuse (8), un ensemble de cylindres avec un cylindre plongeur (9, 10) est installé, autour duquel le matériau en bande (1) est guidé, que les positions des cylindres plongeurs (9, 10), à vitesse de rotation constante des cylindres (4, 5) de la cage de laminage (3) déterminant l'emprise du laminoir, sont commandées en fonction de l'ajustage des cylindres (4, 5), afin d'équilibrer les variations de la vitesse de rotation du matériau à laminer à l'entrée et à la sortie de la cage de laminage (3), et que la débobineuse (7) et la bobineuse (8) sont actionnées selon la tension, et qu'un contrôleur machine (27) est prévu qui détecte l'ajustage des cylindres (4, 5) pour une emprise du laminoir prédéterminée et au moyen duquel, et en fonction duquel, les positions des cylindres plongeurs (9, 10) peuvent être commandées.
  2. Dispositif selon la revendication 1, caractérisé en ce que devant chaque cylindre plongeur (9, 10) et derrière chaque cylindre plongeur (9, 10), un cylindre d'appui (13, 14; 15, 16) pour le matériau en bande (1) est installé, sur lequel le matériau en bande (1) est guidé, et que chaque cylindre d'appui (13, 14; 15, 16) comporte un dispositif de détection de la longueur de la bande et/ou un dispositif de contrôle de la vitesse de rotation de la bande (21, 22; 23, 24).
  3. Dispositif selon une des revendications 1 ou 2, caractérisé en ce que la débobineuse (7) et la bobineuse (8) sont pourvues d'un dispositif de mesure de la tension (ZM), au moyen duquel l'alimentation de courant aux moteurs d'entraînement (MA) de la bobineuse/débobineuse peut être commandée.
  4. Dispositif selon la revendication 1 à 3, caractérisé en ce que les cylindres (4, 5) de la cage de laminage (3) déterminant l'emprise du laminoir tournent à une vitesse de rotation constante.
  5. Procédé d'actionnement d'un dispositif de laminage matériau en bande (1) d'une épaisseur de bande périodiquement variable, le dispositif comportant une cage de laminage (3) avec un jeu de cylindres et un système d'ajustage (6) avec un contrôleur machine (27) pour l'ajustage de l'emprise du laminoir du jeu de cylindres, au côté d'entrée de cette emprise du laminoir le matériau en bande (1) ayant une épaisseur initiale étant alimenté à partir d'une débobineuse (7) et à partir du côté de sortie de laquelle le matériau en bande (1) avec l'épaisseur finale respectivement désirée étant alimenté à une bobineuse (8), caractérisé en ce qu'entre la débobineuse (7) et la cage de laminage (3) aussi bien qu'entre la cage de laminage (3) et la bobineuse (8), un ensemble de cylindres avec un cylindre plongeur (9, 10) étant ajustable transversalement à la direction d'avance (2) du matériau en bandes (1) est installé, sur lequel le matériau en bande (1) est guidé, les positions des cylindres plongeurs (9, 10), en fonction de l'ajustage des cylindres (4, 5) de la cage de laminage (3), étant commandées de telle façon que, par la variation de position, des variations de la vitesse de rotation du matériau à laminer traversant à l'entrée et à la sortie de la cage de laminage (3) soient équilibrées, et que la débobineuse (7) et la bobineuse (8) sont actionnées selon la tension.
  6. Procédé selon la revendication 5, caractérisé en ce que devant chaque cylindre plongeur (9, 10) et derrière chaque cylindre plongeur (9, 10), la longueur de la bande et la vitesse de rotation du matériau en bande (1) traversant sont détectées et alimentées à un dispositif de commande (27) pour le système de laminage, et qu'à partir des données détectées, des signaux pour la détection de la position et/ou la correction de la position des cylindres plongeurs (9, 10) sont générés.
  7. Procédé selon une des revendications 5 ou 6, caractérisé en ce que pour le but de commande de la tension de la bobineuse/débobineuse (7, 8), les forces de tension de la bobineuse/débobineuse (7, 8) sont détectées, et les données détectées sont alimentées à un dispositif de commande, au moyen duquel l'alimentation de courant aux systèmes d'entraînement de la bobineuse/débobineuse (7, 8) est commandée, de façon que la tension de la bobineuse/débobineuse soit respectivement ajustée aux exigences résultant des paramètres de fonctionnement.
  8. Procédé selon une des revendications 5 à 7, caractérisé en ce que l'ajustage des cylindres (4, 5) pour une emprise du laminoir prédéterminée est détecté et alimenté comme des signaux à un dispositif de commande (27), au moyen duquel les cylindres plongeurs (9, 10) sont ajustés à une position de consigne associée à l'emprise du laminoir et enregistrée dans le dispositif de commande comme échantillon de données.
  9. Procédé selon une des revendications 5 à 8, caractérisé en ce que les cylindres (4, 5) de la cage de laminage (3) déterminant l'emprise du laminoir sont actionnés à vitesse de rotation constante.
EP17155391.0A 2016-02-23 2017-02-09 Dispositif et procédé de laminage de matériau en bande à épaisseur variable Active EP3210681B1 (fr)

Applications Claiming Priority (1)

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EP3210681B1 true EP3210681B1 (fr) 2020-01-15

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US (1) US10413949B2 (fr)
EP (1) EP3210681B1 (fr)
ES (1) ES2769264T3 (fr)

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US11701695B2 (en) 2018-12-06 2023-07-18 Sms Group Gmbh Method for operating a roll stand for stepped rolling

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HUE063023T2 (hu) * 2016-12-30 2023-12-28 Outokumpu Oy Eljárás és berendezés fémszalagok rugalmas hengerlésére
CN107716550B (zh) * 2017-09-09 2019-03-29 首钢集团有限公司 一种低合金纵向变厚度钢板的生产方法
JP7135991B2 (ja) * 2019-04-25 2022-09-13 トヨタ自動車株式会社 校正判断装置、及び校正判断方法
DE102020211770A1 (de) * 2020-03-06 2021-09-09 Sms Group Gmbh Walzgerüst
AU2021272824A1 (en) 2020-05-14 2022-11-24 Nippon Steel Corporation Method for producing reduced iron
CN112605124B (zh) * 2020-11-27 2022-07-05 苏州吉润汽车零部件有限公司 一种连续变截面薄钢板的轧制设备及成型方法

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JPH1034204A (ja) * 1996-07-29 1998-02-10 Kawasaki Steel Corp 可逆圧延機における張力制御装置
DE10004532A1 (de) 2000-02-02 2001-08-30 Josef Froehling Gmbh Walzwerks Vorrichtung zum Walzen von Bändern mit periodisch veränderlicher Bandenddicke
DE10310399B4 (de) * 2003-03-07 2005-03-03 Sundwig Gmbh Vorrichtung und Verfahren zum Walzen von Metallbändern
DE102006047463A1 (de) * 2006-10-07 2008-04-17 ACHENBACH BUSCHHüTTEN GMBH Walzwerk und Verfahren zum flexiblen Kalt- oder Warm- Einweg- oder Reversierwalzen von Metallband

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11701695B2 (en) 2018-12-06 2023-07-18 Sms Group Gmbh Method for operating a roll stand for stepped rolling

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US10413949B2 (en) 2019-09-17
EP3210681A1 (fr) 2017-08-30
ES2769264T3 (es) 2020-06-25
US20170239700A1 (en) 2017-08-24

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