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EP1699573B1 - Fonctionnements et types de cages combines dans des trains de laminoir en tandem a froid - Google Patents

Fonctionnements et types de cages combines dans des trains de laminoir en tandem a froid Download PDF

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Publication number
EP1699573B1
EP1699573B1 EP04803394A EP04803394A EP1699573B1 EP 1699573 B1 EP1699573 B1 EP 1699573B1 EP 04803394 A EP04803394 A EP 04803394A EP 04803394 A EP04803394 A EP 04803394A EP 1699573 B1 EP1699573 B1 EP 1699573B1
Authority
EP
European Patent Office
Prior art keywords
working
roll
rolls
cvc
displacement
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.)
Expired - Lifetime
Application number
EP04803394A
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German (de)
English (en)
Other versions
EP1699573A1 (fr
Inventor
Andreas Ritter
Rüdiger Holz
Horst Oemkes
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.)
SMS Siemag AG
Original Assignee
SMS Demag AG
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Filing date
Publication date
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1699573A1 publication Critical patent/EP1699573A1/fr
Application granted granted Critical
Publication of EP1699573B1 publication Critical patent/EP1699573B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • 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
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B21B13/142—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls by axially shifting the rolls, e.g. rolls with tapered ends or with a curved contour for continuously-variable crown CVC
    • 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
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • 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
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B13/023—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally the axis of the rolls being other than perpendicular to the direction of movement of the product, e.g. cross-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
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B2013/025—Quarto, four-high stands
    • 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
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B2013/028—Sixto, six-high stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • B21B27/021—Rolls for sheets or strips

Definitions

  • the invention relates to a method for the combined operation of individual rolling stands within a cold tandem mill, comprising a pair of work rolls and back-up rolls in 4-roll stands and additionally a pair of intermediate rolls in 6-roll stands, wherein at least the work rolls and the intermediate rolls cooperate with devices for axial displacement.
  • the horizontal deflection of the work rolls and intermediate rolls also plays an important role in the flatness of the strip. Due to the horizontal displacement of the work / intermediate rollers from the center plane of the framework, a support of the set of rollers, which leads to a substantial reduction of the horizontal deflection takes place.
  • the 6-roll mill has an additional, fast actuator in the intermediate roll bend.
  • the 6-roll stand In combination with work roll bending, the 6-roll stand has two independent actuators acting on the nip. In the first frame, a rapid adaptation of the nip to the incoming strip profile is thus ensured to avoid flatness defects. In the last framework both actuators can be effectively used in the flatness control.
  • Another criterion for the quality of the final product is the surface finish of the expiring belt. Textured (roughened) and chrome-plated rollers allow the surface of the belt to be pre-set in a targeted manner. In order to avoid marks on the end product by shifting wear edges or shades on the belt surface by the occurrence of relative speed differences across the width of the outgoing belt, it makes sense to run the last stand of a cold tandem mill as a 6-roll mill. The work rolls are cylindrical or slightly crowned. They are not moved in the rolling process.
  • the active principles described above are separate scaffolding concepts, since different roll geometries are required.
  • the bales of the displaceable rollers are always longer by the axial displacement stroke than the fixed, unshifted rollers. This ensures that the sliding roller can not be pushed with its bale edge under the fixed roll barrel. Thus, surface damage / marks are avoided.
  • the work rolls are generally supported over their entire length on the intermediate or backup rolls. Thereby, the rolling force exerted by the back-up rolls is transmitted to the entire length of the work rolls.
  • the object of the invention is to realize these technologies / modes of operation by means of a scaffold design with a geometrically identical set of rolls, which is not limited to a 6-roll stand and not only to the intermediate rolls.
  • the CVC / CVC plus technology roll configuration is used for a 6-roll or 4-roll stand.
  • the slidable intermediate or work roll has a bale which is longer around the CVC displacement stroke and which is symmetrical in the center of the frame for the neutral displacement position.
  • the working / intermediate roller with longer and symmetrical bale is used during the band edge-oriented shifting either with a cylindrical or crowned ground.
  • a regrind in the area of the bale edge in combination with the superimposed roll grinding and the bandwidth-dependent optimization of the axial displacement position, the deformation behavior of the set of rolls and the effectiveness of the positive work roll bending (6-roll stand) can be selectively influenced and the roll gap can be optimally adjusted ,
  • the framework designs described are modified according to the invention such that the roll gap is influenced either by the displacement or the pivoting of the work / intermediate roll.
  • a 6-roll stand is absolutely necessary in any case, if an additional, affecting the edge drop of the tape actuator is to be implemented in the framework. This requires two independent displacement systems for profile and flatness. The system layout is determined by these criteria.
  • the range of system configurations ranges from the classic cold tandem mills, consisting of 4-roll stands, to combined plants consisting of 4- / 6-roll stands up to the cold tandem mill. which consists exclusively of 6-roll stands.
  • the basic procedure for realizing a strip edge-oriented shift strategy excluding the intermediate rolls and exclusively in a 6-roll mill using a geometrically identical set of rolls is in the DE 100 37 004 A1 described in detail.
  • FIG. 1 the geometry of the intermediate / working roll 11, 10 is shown without roll grinding.
  • FIG. 3 schematically the appearance and the geometric arrangement of a one-sided regression d in the bale edge of a working / intermediate roller 10, 11 is shown.
  • DE 100 37 004 A1 is a one-sided regression, as used here, already described in detail and shown in a drawing figure.
  • the length I of the unilateral regrind d in the region of a ball edge of the work / intermediate roller 10, 11 is divided into two adjoining areas a and b.
  • the transition between region a and b can be performed with or without a continuously differentiable transition. Furthermore, this transition of the regression can also be made with a sequential withdrawal of the resulting from the flattening measure d according to a previously determined table.
  • the regrind d is then, for example, in the transition area flatter than a radius and at the end much steeper. For technical reasons, the transition is to the cylindrical part via a correspondingly larger heel in the transition between a and b perform (about 2d).
  • the reduction in diameter 2d by the regrind is predetermined so that in a 6-roll stand the work roll 10 can bend freely around the regrind d of the intermediate roll 11 without having to fear contact in the region b.
  • the regrind d only serves to locally reduce the load peaks that occur.
  • the one-sided regrind d is at the upper working / intermediate roller 10, 11 on the operating side BS and at the lower working / intermediate roller 10, 11 on the drive side AS, as in FIGS. 4 and 5 is shown. On principle, however, nothing changes, if one attaches the regrind d inversely to the upper working / intermediate roller 10, 11 on the drive side AS and at the lower working / intermediate roller 10, 11 on the operating side BS.
  • FIGS. 6a to 6c the axial displacement of the intermediate roller 11 is shown by a displacement m.
  • the positioning depends on the belt width and the material properties, whereby the elastic behavior of the roller set as well as the effectiveness of the positive work roll bending (6-roll stand) can be adjusted.
  • the shift position is given by piecewise linear attachment functions, which are based on different positions of the beginning d 0 of the regression d relative to the band edge.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Toys (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Prostheses (AREA)

Claims (8)

  1. Procédé pour le fonctionnement des cages de laminoir d'un train de laminoir en tandem à froid, comprenant respectivement une paire de cylindres de travail (10) et de cylindres de soutien (12) dans les cages à quatre cylindres et en supplément une paire de cylindres intermédiaires (11) dans les cages à six cylindres, dans lequel les cylindres de travail (10) et les cylindres intermédiaires (11) au moins coopèrent avec des dispositifs pour la translation axiale,
    caractérisé par
    l'emploi combiné des technologies suivantes à l'intérieur du train de laminoir en tandem à froid à plusieurs cages :
    - utilisation de la technologie CVC/CVCplus avec des contours de cylindres CVC d'ordre supérieur, chaque cylindre de travail/cylindre intermédiaire (10, 11) possédant un corps prolongé de la course de translation ;
    - utilisation de la technologie Per Cross (PC), chaque cylindre de travail/cylindre intermédiaire (10, 11) pouvant être pivoté parallèlement au plan des feuillards ;
    - utilisation de la translation, orientée vis-à-vis des arêtes de feuillards, des cylindres de travail/cylindres intermédiaires (10, 11), chaque cylindre de travail/cylindre intermédiaire (10, 11) possédant un corps, prolongé de la course de translation, avec une rectification cylindrique ou bombée, et ces cylindres sont déplacés les uns par rapport aux autres et par rapport à la position de translation neutre (sZW = 0 ou respectivement sAW = 0) au milieu de cage (Y-Y) symétriquement de la même valeur en direction de leurs axes de rotation (X-X).
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    pour utiliser la translation, orientée vis-à-vis des arêtes de feuillards, les cylindres de travail/cylindres intermédiaires (10, 11) sont dotés d'une rectification postérieure unilatérale (d), et lors de la translation de chaque cylindre de travail/cylindre intermédiaire (10, 11), le départ (d0) de la rectification postérieure (d) est positionné à l'extérieur de ou à l'intérieur de ou encore au niveau de l'arête de feuillard, c'est-à-dire à l'intérieur de la largeur du feuillard (14).
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que
    la position de translation des cylindres de travail/cylindres intermédiaires (10, 11) dans différentes zones de la largeur de feuillard est imposée par des fonctions d'approche partiellement linéaires, qui sont basées sur des positions différentes du départ (d0) de la rectification postérieure (d) par rapport à l'arête (14) du feuillard.
  4. Procédé selon la revendication 1, 2 ou 3,
    caractérisé en ce que
    par des stratégies de translation optimisées en fonction de la largeur de feuillard, on atteint la meilleure exploitation possible de la combinaison de technologie à l'intérieur du train de laminoir en tandem à froid à plusieurs cages.
  5. Train de laminoir en tandem à froid, comprenant des cages de laminoir à quatre cylindres/six cylindres avec respectivement une paire de cylindres de travail (10) et de cylindres de soutien (12) dans le cas des cages à quatre cylindres et en supplément respectivement une paire de cylindres intermédiaires (11) dans le cas des cages à six cylindres, dans lequel au moins les cylindres de travail (10) et les cylindres intermédiaires (11) coopèrent avec des dispositifs pour la translation axiale,
    caractérisé en ce que
    les cylindres de travail/cylindres intermédiaires (10, 11) des cages de laminoir présentent chacun un corps avec une rectification cylindrique ou bombée, prolongé de la course de translation axiale et symétrique, qui se trouve symétriquement au milieu de la cage (Y-Y) pour la position de translation neutre (sZW = 0 ou respectivement sAW = 0); et
    en ce que les cages de laminoir sont choisies de façon correspondante pour permettre la mise en oeuvre des différentes technologies que sont :
    - la translation des cylindres de travail/cylindres intermédiaires (10, 11) de façon orientée vis-à-vis de l'arête de feuillard,
    - la technologie CVC, et
    - le pivotement des cylindres de travail (10), par la technologie PC (Per Cross) à l'intérieur du train de laminoir en tandem à froid à plusieurs cages.
  6. Train de laminoir en tandem à froid selon la revendication 5,
    caractérisé en ce que
    le corps des cylindres de travail/cylindres intermédiaires (10, 11) est pourvu d'une rectification postérieure unilatérale (d), dont la longueur (1) est séparée en deux zones mutuellement juxtaposées (a) et (b), dans lesquelles la première zone (a), en commençant avec le rayon (R0), suit l'équation l - x 2 + y 2 = R 2
    Figure imgb0009
     et la zone (b) s'étend sous forme linéaire, dont résulte pour ces zones la rectification postérieure (d) ou la réduction de diamètre (2d) suivante : zone a : = R 2 - R - d 2 1 / 2 ⇒ d = d x = R - R 2 - l - x 2 1 / 2
    Figure imgb0010
     zone b : = l = a ⇒ d = d x = constante .
    Figure imgb0011
  7. Train de laminoir en tandem à froid selon la revendication 5 ou 6,
    caractérisé en ce que
    la transition de la rectification postérieure (d) entre les zones (a) et (b) est exécutée avec une réduction séquentielle de la dimension (d) résultant de l'aplatissement des cylindres, selon un tableau déterminé.
  8. Train de laminoir en tandem à froid selon l'une des revendications 5 à 7,
    caractérisé en ce que le train de laminoir en tandem à froid est réalisé avec une conception correspondante pour mettre en oeuvre la technologie CVC/CVCplus ainsi que la technologie de la translation orientée vis-à-vis de l'arête de feuillard, et le cas échéant la technologie PC avec uniquement un jeu de cylindres égaux sur le plan géométrique.
EP04803394A 2003-12-19 2004-12-01 Fonctionnements et types de cages combines dans des trains de laminoir en tandem a froid Expired - Lifetime EP1699573B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10359838 2003-12-19
DE102004020131A DE102004020131A1 (de) 2003-12-19 2004-04-24 Kombinierte Fahrweisen und Gerüsttypen in Kalttandemstraßen
PCT/EP2004/013623 WO2005063417A1 (fr) 2003-12-19 2004-12-01 Fonctionnements et types de cages combines dans des trains de laminoir en tandem a froid

Publications (2)

Publication Number Publication Date
EP1699573A1 EP1699573A1 (fr) 2006-09-13
EP1699573B1 true EP1699573B1 (fr) 2009-03-25

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EP04803394A Expired - Lifetime EP1699573B1 (fr) 2003-12-19 2004-12-01 Fonctionnements et types de cages combines dans des trains de laminoir en tandem a froid

Country Status (13)

Country Link
US (1) US20070095121A1 (fr)
EP (1) EP1699573B1 (fr)
JP (1) JP2007514548A (fr)
KR (1) KR101224940B1 (fr)
CN (1) CN1894053A (fr)
AT (1) ATE426469T1 (fr)
BR (1) BRPI0417703A (fr)
CA (1) CA2548777C (fr)
DE (2) DE102004020131A1 (fr)
ES (1) ES2322365T3 (fr)
RU (1) RU2358819C2 (fr)
TW (1) TWI324093B (fr)
WO (1) WO2005063417A1 (fr)

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DE102006048427B3 (de) * 2006-10-12 2008-05-21 Siemens Ag Walzanlage, nachgerüstete Walzanlage, Walzwerk oder Walzstraße, Verfahren zum Ansteuern einer Walzanlage und Verwendung eines ersten Gerüsts einer Walzanlage
CN101633000B (zh) * 2008-07-22 2011-05-11 中冶赛迪工程技术股份有限公司 一种中间辊轴向移动装置
RU2492946C1 (ru) * 2012-07-31 2013-09-20 Александр Иванович Трайно Способ холодной прокатки стальных полос
EP3124130A1 (fr) * 2015-07-28 2017-02-01 Primetals Technologies Austria GmbH Meule de cylindre destinee a l'evitement cible de quarts d'onde
CN110883102B (zh) * 2019-11-29 2021-08-20 山东交通学院 一种用于热轧带钢同宽轧制条件的工作辊窜辊方法
CN111633030B (zh) * 2020-04-30 2022-03-18 首钢京唐钢铁联合有限责任公司 酸连轧机辊型配置结构及酸连轧机组

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JPS63264204A (ja) * 1987-04-23 1988-11-01 Mitsubishi Heavy Ind Ltd 圧延機
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Publication number Publication date
CA2548777A1 (fr) 2005-07-14
ATE426469T1 (de) 2009-04-15
RU2006126054A (ru) 2008-01-27
WO2005063417A1 (fr) 2005-07-14
EP1699573A1 (fr) 2006-09-13
CN1894053A (zh) 2007-01-10
RU2358819C2 (ru) 2009-06-20
TW200529944A (en) 2005-09-16
US20070095121A1 (en) 2007-05-03
DE502004009244D1 (de) 2009-05-07
KR20060130582A (ko) 2006-12-19
BRPI0417703A (pt) 2007-03-20
JP2007514548A (ja) 2007-06-07
DE102004020131A1 (de) 2005-07-21
ES2322365T3 (es) 2009-06-19
CA2548777C (fr) 2011-10-11
KR101224940B1 (ko) 2013-01-22
TWI324093B (en) 2010-05-01

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