EP0752285A2 - Procédé et dispositif de laminage de bandes ayant transversalement des irrégularités d'épaisseur et/ou de longeur - Google Patents

Procédé et dispositif de laminage de bandes ayant transversalement des irrégularités d'épaisseur et/ou de longeur Download PDF

Info

Publication number
EP0752285A2
EP0752285A2 EP96110457A EP96110457A EP0752285A2 EP 0752285 A2 EP0752285 A2 EP 0752285A2 EP 96110457 A EP96110457 A EP 96110457A EP 96110457 A EP96110457 A EP 96110457A EP 0752285 A2 EP0752285 A2 EP 0752285A2
Authority
EP
European Patent Office
Prior art keywords
control
belt
control roller
roller
rolling mill
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.)
Ceased
Application number
EP96110457A
Other languages
German (de)
English (en)
Other versions
EP0752285A3 (fr
Inventor
Bernd Dr. Berger
H.-Dieter Volkenand
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.)
Sundwig GmbH
Original Assignee
Sundwiger Eisenhuette Maschinenfabrik Grah and Co
Sundwiger Eisenhuette Maschinenfabrik GmbH and Co
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 Sundwiger Eisenhuette Maschinenfabrik Grah and Co, Sundwiger Eisenhuette Maschinenfabrik GmbH and Co filed Critical Sundwiger Eisenhuette Maschinenfabrik Grah and Co
Publication of EP0752285A2 publication Critical patent/EP0752285A2/fr
Publication of EP0752285A3 publication Critical patent/EP0752285A3/fr
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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

Definitions

  • the invention relates to a method and an apparatus for rolling strips, which have a non-uniform thickness and / or length distribution over their width, using at least one arranged on the inlet and / or outlet side of the rolling mill and pivotable in its position relative to the strip Steering role.
  • tapes After the first steps in their manufacture, tapes generally have asymmetries with regard to the uniformity of their thickness profile and their length, measured over their width. This applies in particular to metal strips rolled in hot strip mills, which usually have a non-uniform, convex thickness distribution over their width. After the longitudinal division of such strips, the edge strips each have a trapezoidal thickness profile. This thickness profile leads to the lateral course of the strips in the roll gap when such edge strips are rolled.
  • German Patent DE 34 05 146 C1 A device which is intended to prevent a strip from running sideways in the roll gap is described in German Patent DE 34 05 146 C1.
  • pivotable belt guide rollers are used in the belt plane, which exert a lateral guide force counteracting the belt from migrating onto the belt.
  • the plunger rollers are arranged adjacent to the guide rollers Wrapping angle of the respective guide rollers can be changed in order to be able to change the size of the cornering force applied to the belt.
  • the center position of the strip is preset before the rolling mill is started up.
  • the respective position of the strip edge is then measured with sensors.
  • a control device interprets a change in the position of the strip edge compared to the predetermined nominal position value as an indication of the eccentricity of the strip.
  • the control device then emits a corresponding actuating signal to an actuating device which changes the pivoting position of the guide roller in such a way that a central band course is established again.
  • a further disadvantage of the known device is that the eccentricity of the belt is used as a controlled variable in this device for regulating the guide roller.
  • the consequence of this is that a certain band course must exist before a control intervention takes place. It has been shown in practical testing that the control intervention often only takes place at a point in time at which the stability limit of the rolling process has already been exceeded.
  • An additional disadvantage of such a control is that when the belt is eccentrically fed, the controller is often given an incorrect setpoint. This error in the input of the setpoint ultimately leads to the control circuit no longer being able to regulate the pivoting position of the guide roller in the manner desired and required for a good work result.
  • the object of the invention is, based on the above-described known device and the corresponding method for rolling strip with simple means to create a method and a device with which it is possible, regardless of the respective operating conditions, with a low susceptibility to malfunction Compensate for non-uniformity in the thickness and / or length course across the width of a band caused by the band course.
  • This object is achieved with respect to a method of the type mentioned at the outset in that the distribution of the tensile stresses over the width of the strip is detected with at least one measuring device arranged on the same side of the rolling mill as the control roller, and in that the control roller is adjusted so long in accordance with the detected tension distribution until the recorded tension distribution corresponds to a target value.
  • the procedure according to the invention takes into account the fact that the lateral running of the strip in the roll gap is caused by an asymmetrical distribution of the tensile stresses over the width of the strip.
  • the asymmetrical distribution of the tensile stresses across the width of the belt has two causes. One of these causes is that in the event that tapes with a trapezoidal thickness profile are wound up, a winding state which is uneven across their width is produced. The thicker band edge is wrapped very tightly, while the thinner band edge is wrapped very loosely. If a tensile force is now introduced into the tape at the winding reels, a large tape tension occurs on the tightly wound edge strips, while a small tension occurs in the areas that are loosely wound. These asymmetrical tensions work very far into the band.
  • the second cause of the asymmetrical tension distribution in the cold rolling of edge strips is that the hot strips rolled in hot rolling mills usually have, apart from a convex, non-uniform thickness profile over their width, also an uneven length distribution over their width. In most cases, the tapes have a short tape center and long tape sides. This uneven, however regarding The symmetrical length distribution of the hot strips in the middle of the strip results in an asymmetrical length distribution on the edge strips when the strips are cut. After cutting, these have a short and a long band edge.
  • the non-uniformity of the tension distribution over the width of the strip is detected on the same side of the rolling mill on which the control roller is also arranged.
  • the changes in the tension distribution of the belt caused by an adjustment of the control roller are detected by the corresponding measuring device without being influenced by other elements acting on the belt. It is thus possible in a simple manner to apply tensile forces to the strip by adjusting the control roller in such a way that it can be rolled without the risk of lateral running.
  • the influence of changes in the friction between the belt and the respective control roller is reduced to a minimum.
  • the risk of specifying an incorrect control setpoint is reduced to a minimum, since it is not a geometry size of the processed strip that can be selected as the reference variable, but rather a characteristic value determined for all strips or certain types of strips.
  • the tension distribution in the strip can advantageously be determined from the difference between the strip tensile forces detected on the drive and operating sides of the rolling mill.
  • the device according to the invention of the type mentioned at the outset has means for detecting the tension distribution over the width of the belt and a regulating device which determines actuating signals for actuating devices for pivoting the control roller from the detected tension distribution.
  • a configuration of the device according to the invention which is favorable with regard to minimizing the influence of friction on the work result is characterized in that the control roller can be pivoted in a vertically oriented plane.
  • a swiveled control roller arranged in this way does not generate any side forces, but effectively changes the length of the belt and thus has a direct effect on the tension distribution.
  • At least one control roller is arranged on both the inlet and the outlet side of the rolling mill.
  • the effect of the respective control rollers can additionally be increased by assigning at least one deflection roller to the respective control roller.
  • This deflection roller can be arranged both in front of and behind the respective control roller in the conveying direction of the belt.
  • the effect of these deflection rollers is that when they are immersed in the belt, the angle of wrap on the control rollers is increased. With the widening of the wrap angle is accompanied by an increase in the influence of the control rollers on the tension development in the respective band.
  • the measuring devices required for detecting the voltage curve directly in the area of the control roller itself or in the conveying direction of the belt following the respective control roller at a certain distance can be measured, for example, with force sensors which are positioned on the bearing blocks of the control rollers or on the bearing blocks of the deflection rollers arranged closely adjacent to the control rollers.
  • the control rollers or the adjacent deflection rollers are designed as flatness measuring rollers to derive the asymmetry of the tension distribution directly from the measuring roller signals.
  • the versatility of the device according to the invention can be further increased in that the distance between the deflection rollers and the control rollers to the belt can be changed.
  • the control roller and the deflection roller should each be so far removed from the belt that both the control roller and the deflection roller can be disengaged from the belt if necessary. In many cases it will be beneficial to disengage a pulley located on the outlet side of the rolling mill if the flatness control is used and as few rolls as possible are to come into contact with the belt.
  • control rollers are arranged on the inlet and / or the outlet side of the rolling mill, one of which is on the upper Band surface and the other acts on the lower band surface.
  • the versatility of the device according to the invention is further increased.
  • the simultaneous use of both control rollers can take place, in which case the control rollers are pivoted in opposite directions to one another. The interaction of the control rollers achieved in this way considerably increases their influence on the tension distribution.
  • the device for rolling strips shown in FIG. 1 has a rolling mill W having two work rolls 1, 2.
  • an uncoiler 3 is arranged, from which a belt B is conveyed in the conveying direction F into the roll gap 4 between the work rolls 1, 2 of the rolling mill W.
  • the band B is guided over a first control roller 5.
  • the control roller 5 is mounted on a bearing block 6, on which force measuring sensors 7 for determining the tensile forces acting on the belt B on the inlet side are fastened.
  • the control roller 5 can be pivoted via its bearing block 6 by means of actuators (not shown) in a substantially vertically oriented plane N 1 '.
  • a winding reel 8 is arranged on the outlet side A of the rolling mill W, on which the finished rolled strip B is wound.
  • the strip B is previously guided over a second control roller 9 arranged between the roll gap 4 and the take-up reel 8.
  • the control roller 9 is mounted on a bearing block 10 which is equipped with force measuring sensors 11 for determining the tensile forces acting on the belt B on the outlet side.
  • the second control roller 9 can be pivoted in a plane N 1 ′′, which is oriented essentially vertically, by means of adjusting devices (not shown ) .
  • the force measuring sensors 7, 11 are connected to a control device, not shown, which determines the tensile stress distribution over the width of the belt B from the measuring signals of the force measuring sensors 7, 11 and outputs control signals to the actuators, not shown, for pivoting the control rollers 5, 9 until the determined Tension distribution corresponds to a predetermined setpoint.
  • the strip B is fed from a decoiler 20 via a first control roller 21 which can be pivoted in a substantially vertically oriented plane N 2 'to the roll gap 22 of the rolling mill W'.
  • a deflection roller 23 acts on the belt B, which is above of the belt B and between the control roller 21 and the rolling mill W 'is arranged.
  • the deflection roller 23 is adjustable in height in order to be able to change the angle ⁇ in which the belt B wraps around the control roller 21.
  • the first control roller 21 is mounted on a bearing block 24, which are determined with force measuring sensors 25 for determining the tensile forces acting on the strip B on the inlet side E of the rolling mill W '.
  • a second deflection roller 26 is arranged next to the roll gap 22.
  • the deflection roller 26 is adjustable in height and can be removed from the belt B to such an extent that it is out of engagement with the belt.
  • a second control roller 27 is arranged closely adjacent to the deflection roller 26 in the conveying direction F of the belt B and can be pivoted in a plane N 2 ′′, which is oriented essentially vertically, by means of adjusting devices (not shown ) . After it has passed the control roller 27, the tape B is wound on a take-up reel 28.
  • the tensile forces acting on the belt B on the operator and drive side are also detected in the device shown in FIG. 2 and are fed to a control device, not shown.
  • the drive side means the side of the strip B which is assigned to the side of the rolling mill W 'equipped with the drives.
  • the operating side is the freely accessible other side of the rolling mill W '. From the determined tension curve, the control device determines actuating signals for pivoting the control rollers 21, 27 until the determined tension distribution corresponds to a desired value.
  • FIG. 3 shows a detail of a third device for rolling strips, in which the strip B is likewise fed from a take-up reel 40 to the roll gap 42 of a rolling mill W ′′ via a first control roller 41.
  • a second control roller 43 which acts on the surface of the strip B, is arranged between the first control roller 41 and the rolling mill W ′′.
  • the first control roller 41 can be pivoted in a plane N 3 ', which is oriented essentially vertically, by means of adjusting devices (not shown ) .
  • the control roller 43 can be pivoted in a plane N 3 ′′, which is also oriented vertically.
  • the device shown in FIG. 3 has a structure corresponding to the structure on the inlet side E.
  • the distribution of the tensile stresses under which the band B is located is also determined in the device according to FIG. 3 by means of suitable measuring devices.
  • the tension distribution is fed to a suitable control device, which sends control signals to the actuators (not shown) for pivoting the control rollers 41, 43 until the tension distribution corresponds to a desired value.
  • the control rollers 41, 43 are adjusted in opposite directions in order to increase their effectiveness.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
EP96110457A 1995-07-07 1996-06-28 Procédé et dispositif de laminage de bandes ayant transversalement des irrégularités d'épaisseur et/ou de longeur Ceased EP0752285A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19524729 1995-07-07
DE19524729A DE19524729A1 (de) 1995-07-07 1995-07-07 Verfahren und Vorrichtung zum Walzen von Bändern mit über ihrer Breite ungleichförmige Dicken- und/oder Längenverteilung

Publications (2)

Publication Number Publication Date
EP0752285A2 true EP0752285A2 (fr) 1997-01-08
EP0752285A3 EP0752285A3 (fr) 1997-01-15

Family

ID=7766224

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96110457A Ceased EP0752285A3 (fr) 1995-07-07 1996-06-28 Procédé et dispositif de laminage de bandes ayant transversalement des irrégularités d'épaisseur et/ou de longeur

Country Status (4)

Country Link
US (1) US5778717A (fr)
EP (1) EP0752285A3 (fr)
JP (1) JPH0924406A (fr)
DE (1) DE19524729A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0974406A2 (fr) 1998-07-24 2000-01-26 Sms Schloemann-Siemag Aktiengesellschaft Procédé et dispositif pour corriger le déplacement d'une bande pendant le laminage
DE19843039A1 (de) * 1998-07-24 2000-01-27 Schloemann Siemag Ag Verfahren und Vorrichtung zum Korrigieren des Bandverlaufs beim Bandwalzen
WO2025114006A1 (fr) * 2023-11-29 2025-06-05 Sms Group Gmbh Procédé, dispositif et programme informatique pour ajuster la répartition de la tension de bande lors de l'enroulement d'une bande métallique laminée à froid

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19843899C1 (de) * 1998-09-24 2000-05-04 Bwg Bergwerk Walzwerk Verfahren und Vorrichtung zur Planheitsmessung von Bändern
DE19945202A1 (de) 1999-09-21 2001-03-22 Bfi Vdeh Inst Angewandte Forschung Gmbh Verfahren und Vorrichtung zum Walzen oder Wickeln von Band
AUPQ436399A0 (en) * 1999-12-01 1999-12-23 Bhp Steel (Jla) Pty Limited Hot rolling thin strip
JP2003531025A (ja) * 2000-04-17 2003-10-21 リーテル・オートモティブ・（インターナショナル）・アーゲー 乗り物の断熱に用いられる音響的な効果を有するフォイル積層体の製造方法
GB0020160D0 (en) * 2000-08-17 2000-10-04 Vai Ind Uk Ltd Steckel furnace coiler and apparatus therefor
DE102004041321A1 (de) * 2004-08-26 2006-03-02 Sms Demag Ag Walzwerk zum Walzen von metallischem Band
DE102019131761A1 (de) * 2019-11-25 2021-05-27 Norbert Umlauf Walzlinie
DE102020210970A1 (de) 2020-08-31 2022-03-03 Sms Group Gmbh Planheitsmessvorrichtung, Warmwalzanlage und Verfahren zum Betreiben einer Planheitsmessvorrichtung

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5828005B2 (ja) * 1975-04-15 1983-06-13 日本鋼管株式会社 キンゾクバンノアツエンニオケル ケイジヨウセイギヨソウチ
JPS51127988A (en) * 1975-04-30 1976-11-08 Ishikawajima Harima Heavy Ind Co Ltd Tension control device having looper and this looper
FR2403839A1 (fr) * 1977-09-26 1979-04-20 Secim Procede de regulation de l'epaisseur d'un produit plat en cours de laminage et installation correspondante
JPS5939413A (ja) * 1982-08-27 1984-03-03 Mitsubishi Heavy Ind Ltd 通板材蛇行修正機能を有するル−パ装置
JPS59118219A (ja) * 1982-12-23 1984-07-07 Ishikawajima Harima Heavy Ind Co Ltd 蛇行制御方法
DE3405146C1 (de) * 1984-02-14 1985-02-14 Sundwiger Eisenhütte Maschinenfabrik Grah & Co, 5870 Hemer Walzgeruest und Verfahren zum Planwalzen von Metallband in einem Walzgeruest
DD223373A1 (de) * 1984-04-23 1985-06-12 Bergbau U Huettenkombinat Albe Vorrichtung zur regelung der bandspannung
US4976158A (en) * 1989-05-08 1990-12-11 United Engineering, Inc. Tension measuring apparatus
DE4091342C2 (de) * 1989-07-31 1993-11-04 Toshiba Kawasaki Kk Vorrichtung zur lagesteuerung einer walzplatte
US5172579A (en) * 1989-07-31 1992-12-22 Kabushiki Kaisha Toshiba Steering control apparatus for rolled plates
JPH0399712A (ja) * 1989-09-11 1991-04-24 Toshiba Corp 圧延機の蛇行制御装置
KR0174815B1 (ko) * 1989-09-18 1999-02-18 미다 가쓰시게 교정장치 및 교정방법
CN1040073C (zh) * 1989-12-25 1998-10-07 石川岛播磨重工业株式会社 轧机的板厚控制系统
JPH03238102A (ja) * 1990-02-14 1991-10-23 Ishikawajima Harima Heavy Ind Co Ltd 圧延方法及びその装置
JPH044914A (ja) * 1990-04-20 1992-01-09 Nippon Steel Corp 冷間圧延機におけるストリップの蛇行制御装置およびその制御方法
JPH0437407A (ja) * 1990-06-01 1992-02-07 Nippon Steel Corp 金属帯圧延機制御装置
JPH04228215A (ja) * 1990-12-27 1992-08-18 Kawasaki Steel Corp 金属ストリップのロール巻付け圧延における金属ストリップの蛇行修正方法
JP2968645B2 (ja) * 1992-07-17 1999-10-25 新日本製鐵株式会社 熱間圧延における板幅制御方法
DE19503363A1 (de) * 1994-02-15 1995-09-07 Siemens Ag Einrichtung und Verfahren zum Regeln der Planheit und/oder Spannungsverteilung von gewalzten Metallbändern

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0974406A2 (fr) 1998-07-24 2000-01-26 Sms Schloemann-Siemag Aktiengesellschaft Procédé et dispositif pour corriger le déplacement d'une bande pendant le laminage
DE19843039A1 (de) * 1998-07-24 2000-01-27 Schloemann Siemag Ag Verfahren und Vorrichtung zum Korrigieren des Bandverlaufs beim Bandwalzen
WO2025114006A1 (fr) * 2023-11-29 2025-06-05 Sms Group Gmbh Procédé, dispositif et programme informatique pour ajuster la répartition de la tension de bande lors de l'enroulement d'une bande métallique laminée à froid

Also Published As

Publication number Publication date
EP0752285A3 (fr) 1997-01-15
US5778717A (en) 1998-07-14
JPH0924406A (ja) 1997-01-28
DE19524729A1 (de) 1997-01-16

Similar Documents

Publication Publication Date Title
EP0350431B1 (fr) Procédé de coulée continue pour la fabrication de brames avec une épaisseur réduite en présence d'état brut de coulée
DE3036997C2 (fr)
EP0192982B1 (fr) Appareil d'avancement de bande laminée
DE3419261C2 (fr)
EP0121148B1 (fr) Procédé pour la fabrication de feuillard à chaud avec section et planéité de bande de haute qualité
DE60016999T2 (de) Verfahren und Vorrichtung zum Regeln der Bandform beim Bandwalzen
EP1278606B1 (fr) Procede et dispositif permettant d'enrouler un feuillard lamine a chaud dans une position correcte, dans un dispositif d'enroulement
DE4129988A1 (de) Verfahren zur steuerung einer seitenfuehrungseinrichtung
EP1456421B1 (fr) Procede et dispositif pour dresser et refroidir de maniere regulee un feuillard metallique large, notamment un feuillard d'acier ou une tole, sortant d'un laminoir a chaud pour feuillards
EP3210681A1 (fr) Dispositif et procédé de laminage de matériau en bande à épaisseur variable
DE69104169T2 (de) Verfahren zur Regelung der Kantenabsenkung beim Kaltwalzen von Stahl.
EP0752285A2 (fr) Procédé et dispositif de laminage de bandes ayant transversalement des irrégularités d'épaisseur et/ou de longeur
DE3006544C2 (de) Vorrichtung zur Steuerung der Breite einer Bramme beim Warmvorwalzen
EP2741870B1 (fr) Installation de laminage et procédé de laminage
DE1427888B2 (de) Einrichtung zur Dickenverringerung von Bandmaterial
DE2836595C2 (de) Vorrichtung zur Regelung der Walzbanddicke in einer Tandemwalzstraße
EP4204166B1 (fr) Dispositif de mesure de planéité, laminoir à chaud et procédé d'actionnement d'un dispositif de mesure de planéité
EP0734795B1 (fr) Procédé pour la régulation à action directe d'épaisseur dans le laminage de feuillards
EP1173295A1 (fr) Procede de laminage d'un feuillard metallique et dispositif de laminage y relatif
AT518486B1 (de) Verfahren zur Messung der Massenverteilung
DE3837101A1 (de) Verfahren zum steuern des bandlaufs beim walzen, in einer walzstrasse
DE3401894A1 (de) Verfahren zum herstellen von walzband mit hoher bandprofil- und bandplanheitsguete
DE4424613B4 (de) Verfahren zum Betreiben eines Walzgerüstes
DE2823071C2 (fr)
EP2531309A2 (fr) Train de laminage à chaud pour le laminage d'un feuillard à chaud, procédé pour faire fonctionner un train de laminage à chaud pour le laminage d'un feuillard à chaud, ainsi que dispositif de commande et/ou de régulation

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

17P Request for examination filed

Effective date: 19960628

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT DE FR GB IT

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT DE FR GB IT

17Q First examination report despatched

Effective date: 19990118

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SUNDWIG GMBH.

APAB Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPE

APAD Appeal reference recorded

Free format text: ORIGINAL CODE: EPIDOS REFNE

APAB Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPE

APCB Communication from the board of appeal sent

Free format text: ORIGINAL CODE: EPIDOS OBAPE

APCB Communication from the board of appeal sent

Free format text: ORIGINAL CODE: EPIDOS OBAPE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 20030128

APAF Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNE