EP2081703A2 - Laminoir et procédé pour commander un laminoir - Google Patents

Laminoir et procédé pour commander un laminoir

Info

Publication number
EP2081703A2
EP2081703A2 EP07803075A EP07803075A EP2081703A2 EP 2081703 A2 EP2081703 A2 EP 2081703A2 EP 07803075 A EP07803075 A EP 07803075A EP 07803075 A EP07803075 A EP 07803075A EP 2081703 A2 EP2081703 A2 EP 2081703A2
Authority
EP
European Patent Office
Prior art keywords
rolling mill
stand
metal strip
rolling
tandem
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Withdrawn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
EP07803075A
Other languages
German (de)
English (en)
Inventor
Berthold Botta
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.)
Primetals Technologies Germany GmbH
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP2081703A2 publication Critical patent/EP2081703A2/fr
Withdrawn legal-status Critical Current

Links

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
    • B21B37/48—Tension control; Compression control
    • 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
    • B21B39/08—Braking or tensioning arrangements
    • 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

Definitions

  • the invention relates to a rolling mill, in particular a cold strip tandem rolling mill, and a method for controlling such a rolling mill. Furthermore, the invention relates to the use of a first stand of a rolling mill, insbesonde re ⁇ a cold strip tandem rolling mill.
  • An objective in the distribution of pass sampling in rolling mills, in particular in cold strip tandem rolling mills, may be, in addition to distributing the stoppages for technological reasons, a distribution of Stichab66 according to the mechanical engineering conditions of the individual rolling mills, in order to make optimum use of them in terms of production ,
  • discontinuous tandem mills which use both longitudinally divided hot strips and strip annealing methods as input material, in which the bundles are technically wound with little strip tension, it may happen that the first stand of the tandem mill can only apply a low rolling performance ,
  • this first framework can provide the desired rolling performance.
  • An increase in the rolling performance of the roll stand can be achieved in two ways, namely by increasing the rolling force and / or by increasing the tensile stresses in the metal strip.
  • An increase in the rolling force can thus SUC ⁇ gen by increasing the system pressure of the hydraulic adjustment and / or an enlargement of a piston area of a screw down.
  • This options are for existing plants often Limits set, or a meaningful increase in rolling force not possible.
  • Reasons for this are z. B. that the operating ⁇ pressure is already close to the permissible pressure limit and an increase is therefore no longer possible, or that an increase in the piston area, ie installation of a new Anstell- cylinder, for reasons of installation space is not feasible.
  • an increase in the rolling force fail because the existing scaffold stand can no longer absorb the additional forces.
  • the increase of an inlet-side strip tension in the production ⁇ direction in front of the first frame of the tandem mill can also be done by installing an S-roll (Bridle), a train or multi-role Bridles or a duo-rolling mill.
  • S-roll Bendle
  • a train or multi-role Bridles or a duo-rolling mill.
  • These possibilities are often also limited in existing plants, which are predetermined by structural conditions (Platzbe ⁇ may) or by technological parameters, such as oiled metal ⁇ bands.
  • the rolling mill should have ei ⁇ NEN little space and have an improved con- trollieriana a tape run.
  • an existing rolling mill in particular an existing cold strip tandem rolling mill, it retrofit ⁇ inventively so that it is operable with the erfindungsge ⁇ MAESSEN control method.
  • the rolling mill has a plurality of rolling stands in a tandem mill, wherein a rolling stand set up for a rolling-off is designed as a unit with a function of increasing the strip tension, as a so-called driving stand.
  • a control method of a rolling mill is provided according to the invention, wherein a roll stand of the art ⁇ is driven such that it acts as an aggregate for the metal strip with increasing the strip tension function.
  • the rolling mill is configured or operated in such a way that, although a rolling of the metal strip can take place through the driving stand, but this is substantially dispensed with, and an increase in the mechanical intake run of the metal strip takes place through the driving stand.
  • the increase of the mechanical intake run of the metal strip takes place by a suitable operation of the driver scaffold.
  • This is z. B. a generator operation, in which the rollers of the driver scaffold are not driven.
  • a first roll-active rolling stand of the rolling mill is a second rolling stand in the production direction of the metal strip.
  • This first rolling active rolling stand takes place a first substantial Dickenredu ⁇ ornamentation of the metal strip.
  • a first Ge ⁇ equipment of the rolling mill preferably a first frame of a tan- demwalzstrom is.
  • the rolling mill is characterized in that it has no S-roller assembly, no train or Mehrrollen- Bridle and no tandem mill upstream duo stand.
  • the invention relates to a (retrofitted) rolling ⁇ plant, in particular a (retrofitted) cold rolling mill with ei ⁇ ner (retrofitted) rolling mill, preferably a (nachgerüs ⁇ ended) cold-rolled tandem mill.
  • This rolling mill comprises, as aggregate with increasing the strip tension on the inlet side function forthcoming Trains t only a single rolling stand of the tandem mill on which is operated in accordance with the driving stand with increasing the strip tension ⁇ function on. Ie. the rolling mill according to the invention has no S-roller arrangement, no train or multi-roller Bridle and also no duo rolling mill.
  • FIG. 1 An aggregate 260 with a strip tension-increasing function is rendered obsolete (FIG. 1).
  • the invention should not be limited to cold-rolled tandem rolling mills 1 but generally relate to tandem mills 20.
  • a Walzge ⁇ rüstan instrument understood that, preferably of at least two series-connected in a production direction P of a metal strip 100 directly connected in series, rolling mills 220; 230; 240; 250 is constructed. Ie. also that the invention is applicable to a two-stand rolling mill.
  • the 1 shows two of three main portions of a conventional cold strip tandem rolling mill 1, and that the Me ⁇ tallband entry section 10 and to it 100 subsequent tandem mill 20 in producti ⁇ onscardi P of the metal strip is also added in the cold strip tandem rolling mill 1 a metal strip outlet section (not shown in the drawing ⁇ ), the z. B. has a reel for a Reversierbe- operation or other subsequent to the cold-rolled tandem mill 1 units, such. B. a tempering / planing rolling mill.
  • the metal strip entry portion 10 of the cold-rolled strip tandem rolling ⁇ plant 1 comprises a replaceable sit ⁇ shielded tungsten halogen on an uncoiler 270 and unwindable coil 110, the metal strip 100 via an aggregate 260 with belt tension-increasing function and ei ⁇ ne deflection roller 210 in the tandem mill 20 (corresponding to a rolling-active area 25 of the rolling mill 1) of the cold-rolled tandem mill 1 occurs.
  • Bridle units guide and direct the metal strip 100 and maintain its internal tensile stresses by, for. B. o above the tape run of the metal strip 100 arranged and adjustable rollers can be lowered by means of a mechanical drive from a starting position on a tape surface in an Ar ⁇ beitsposition.
  • the band alternately bent in the working position of a multi-roll bridle unit leaves the bridle unit at a work roll closest to a roll nip of the associated roll stand 220 at the level of a pass line of the roll stand (not shown in the drawing).
  • the aggregate 260 with band-train increasing function is designed as an S-roller arrangement (Bridle) in FIG.
  • the tandem mill 20 has a plurality of rolling stands 220; 230; 240; 250, all of them rolling mills 220; 230; 240; 250 act. Ie. when rolling a metal strip 200 takes place in all rolling stands 220; 230; 240; 250 of the rolling mill 1 a not insignificant thickness reduction of
  • a first stand 220 also called a ⁇ running scaffold
  • tandem line 20 which may correspond in terms of its construction, which may be shown in the prior art, is actuated in a different manner.
  • the first stand 220 of the tandem mill 20 in the function of a driver used to realize a mechanical tensile structure in the metal strip 100.
  • B. is represented by the S-roller assembly in Figure 1, obsolete.
  • the first stand 220 is changed only in its function, whereby now the second stand 230 within the tandem line 20 in the production direction P represents the first roller-active stand 230.
  • the cold-rolled tandem rolling mill 1 has a metal strip inlet section 10 according to the invention with a delivery 270 and a deflection roller 210.
  • the erfindungsge ⁇ Permitted tandem mill 20 has a plurality of rolling stands 220, 260; 230; 240; 250, wherein only the behind the first stand 220 arranged rolling stands 230; 240; 250 rolling mills are.
  • the first framework 220 in the production direction P of the metal band 100 is designed as an aggregate 260 with a band-tension-increasing function. In the following, this first framework 220 will be referred to as a driver scaffold 260, which is no longer rolling active, but mainly serves to increase the mechanical strip tension of the metal strip 100.
  • this driver scaffold 260 as a walzakti ⁇ ves rolling stand 220, 260, which is particularly for a reversing a reversing mill (see also below) or even with a required high reduction in thickness for a metal strip 100 may be advantageous.
  • the driving frame 260 by motor in the right or left rotation.
  • the right or left rotation is intended to refer to the work rolls of the Examerge ⁇ rüsts 260th
  • the support rollers of the drive stand 260 are operated in the opposite direction of rotation or run as a generator.
  • these work rolls naturally rotate in an opposite direction That is, the work rolls and possibly the associated back-up rolls rotate like the corresponding rolls of an active stand 230, 240, 250 following in the direction of production P. ,
  • the work rolls of the drive stand 260 can rotate in the same direction as the corresponding work rolls of a following roll-active stand 230; 240; 250 drive. In this case, however, it is preferred that these with a lower force than the following roller-active rolling stands 230; 240; 250 are operated to give the metal strip 100 inherent tensile stresses. Accordingly, the support rollers of the drive stand 260 can be operated. It is again possible to drive only a portion of the rollers accordingly.
  • the other rollers can z. B. be operated as a generator.
  • rollers of the driving stand preferably no slip having 260 un ⁇ behind the other and the working rolls of the driving stand 260 with the metal strip 100 as little slip.
  • a check control of the driving stand 260 to increase the mechanical entry of the metal strip 100 is such that an outer peripheral speed of the respective Häwal ⁇ ze of the driving stand 260 substantially corresponds to a translational velocity of the metal strip 100 and diesel se two velocity vectors in the " 260 come nip "of the driving stand to cover. the same applies also for the supporting rolls of the driving stand 260.
  • the slip between the metal is band 100 and a work roll of the driver scaffold 260 about 0.1% to 0.75%, preferably 1% to 2%, in particular 3% to 5% and particularly preferably 6% to 10%.
  • the outer circumference ⁇ speed of the work roll of the driving stand 260 is preferably such percentages slower than the Geschwin ⁇ speed of the metal strip 100. In preferred embodiments of the invention, however, no slip occurs.
  • any type of driven or regenerative operation of the rollers in the driver frame 260 is conceivable. It is Z. Example, possible to drive only the support rollers of the drive stand 260 and to operate its work rolls as a generator. It is also possible to drive only those rollers of the drive stand 260 which are located on one side of the metal strip 100 and which allow the other side to run as a generator.
  • the invention is applicable to all rolling mills 1. This applies both to newly designed rolling mills 1, as well as for existing rolling mills 1, which are inventively um ⁇ equipped. The same applies to the method for Betrei ⁇ ben the rolling mill 1.
  • the unit 260 with strip tension increasing function is dismantled and a rolling stand of the tandem mill 20 according to the invention operated as a drive stand 260.
  • the retrofitted rolling mill 1 is shorter in size, whereby z. B. other units in the rolling mill 1 or rolling mill 1 can be installed.
  • ⁇ driver frame 260 is driven or operated. The during the first passage acting as a driving stand 260 first stand 220 is then preferably driven as the last actively rolling mill 250 on the second pass of the metal bands ⁇ 100th In a third run as ⁇ derum reverses this. Ie.
  • both the first stand 220 and the last stand 250 (reference ⁇ sign for the first pass of the metal strip 100) each as a drive stand 260 and for a subsequent pass of the metal strip 100 as the last rolling active framework 250 operable or used.
  • ers ⁇ te (220/250) and the last stand (250/220) each alternately to operate as a driver stands 260 (first stand) and not to drive, or the respective other last stand to run without assigning a relevant function.
  • the invention is particularly applicable to existing cold ⁇ band tandem rolling mills 1, Zung grads cover a wide range of production spectrum with respect to a Legiabwal-, and especially those Walzanla ⁇ gen 1 applies, the maximum time (over rolling power reserves even for a Abroll) in the individual rolling stands.
  • the first roller-active stand 220; (250) takes place as a driver scaffold 260, which does not carry out substantial rolling of the metal strip 100.
  • the resulting possible reduction in the number of passes is transferred to the remaining rolling stands (220); 230; 240; 250 of the rolling mill 1 distributed.
  • the first framework 220; (250) finds a Stabili ⁇ tion and homogenization of the belt run through a decision coupling from the Abhaspei 270; an improved tape guide, especially with wedge-shaped narrow band; and an increase in the incoming strip tension.
  • Reference numerals in parentheses relate to a reversing operation of a reconditioning rolling mill 1 according to the invention
  • a lost through the driving stand 260 ge ⁇ gangene, possible reduction per pass can be compensated for within the tandem mill 20 by increasing the strip tension for the metal strip 100, so that the tandem mill 20 of the invention and the rolling mill 1 according to the invention can realize the same Dickenab ⁇ measures, such as a Tandem Road 20 according to the prior art.
  • Particular advantage is a smaller length of the entire system, since the assembly 260 with tape tension-increasing function (see FIG 1) who can dispense ⁇ . This offers not only lower energy consumption but also lower maintenance.
  • the invention must not necessarily, along the production P tung the metal strip 100, its first frame is formed 220 by a running-in of the metal strip 100 in the tandem mill 20 as a driver ⁇ scaffold 260 and are driven. It is also possible the invention to another or more rolling stands 220; 230; 240; 250 of the rolling mill 1 apply. So it is z. B. possible, in particular in a comparatively long tandem ⁇ road 20, in the direction of production P further back arranged roll stand 230; 240; 250 also form ⁇ to ⁇ addition to the first stand 220 as a drive stand 260 ⁇ or to control.
  • the last stand 250 in the production direction P in order to increase the strip tension of the metal strip 100 in front of it.
  • the last roll stand 250 ben angetrie- in the production direction P 260
  • the outer peripheral speed of the Häwal ⁇ zen of the last rolling stand 250, 260 (driving stand 260) ⁇ is ringhegig greater ge than the speed of the metal strip 100; or the last framework 250, 260 is with a larger Drive power driven, as in the production direction P arranged in front of a rolling stand 220; 230; 240.
  • the above-mentioned slip values are to be applied in reverse; That is to say, the outer peripheral speed of the work rolls of the last stand 250, 260 is preferably greater than the speed of the metal strip 100 in the "roll gap" of the last stand 250, 260 by the above-mentioned percentages.
  • the invention should not be limited to quarto scaffolding, but all types of rolling rolling mills 220; 230; 240; 250; 260 relate.
  • the invention z. B. also applicable to rolling duo or Sexto rolling mills ⁇ bar.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

L'invention concerne un laminoir, en particulier, un laminoir tandem (1) à froid, destiné à produire un feuillard métallique (100), présentant de nombreuses cages (220, 260; 230; 240;...; 250) disposées dans un passage tandem (20), dans le sens de production (P) de la bande métallique (100), une première cage (220) étant conçue comme une cage de commande (220, 260) et étant utilisée comme entrée pour une partie (25) du passage tandem (20), dans lequel une première réduction de l'épaisseur du feuillard métallique (100) est réalisée, et grâce à une commande correspondante de la cage de commande (220, 260), une amélioration dans la tension mécanique d'entrée du feuillard métallique (100) est obtenue. L'invention concerne, de plus, un procédé pour commander ledit laminoir, en particulier un laminoir tandem (1) à froid, destiné à produire un feuillard métallique (100), selon lequel, dans le sens de production (P) du feuillard métallique (100), une première cage (220) est commandée comme une cage de commande (220, 260), ladite cage de commande (220, 260) permettant une amélioration significative de la tension mécanique d'entrée sur le feuillard métallique (100) ainsi qu'une réduction significative de l'épaisseur dudit feuillard métallique (100).
EP07803075A 2006-10-12 2007-08-30 Laminoir et procédé pour commander un laminoir Withdrawn EP2081703A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006048427A DE102006048427B3 (de) 2006-10-12 2006-10-12 Walzanlage, nachgerüstete Walzanlage, Walzwerk oder Walzstraße, Verfahren zum Ansteuern einer Walzanlage und Verwendung eines ersten Gerüsts einer Walzanlage
PCT/EP2007/059066 WO2008043605A2 (fr) 2006-10-12 2007-08-30 Laminoir et procédé pour commander un laminoir

Publications (1)

Publication Number Publication Date
EP2081703A2 true EP2081703A2 (fr) 2009-07-29

Family

ID=38596347

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07803075A Withdrawn EP2081703A2 (fr) 2006-10-12 2007-08-30 Laminoir et procédé pour commander un laminoir

Country Status (7)

Country Link
US (1) US20100050727A1 (fr)
EP (1) EP2081703A2 (fr)
CN (1) CN101522326B (fr)
BR (1) BRPI0719132A2 (fr)
DE (1) DE102006048427B3 (fr)
RU (1) RU2460598C2 (fr)
WO (1) WO2008043605A2 (fr)

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DE102007031333A1 (de) * 2007-07-05 2009-01-15 Siemens Ag Walzen eines Bandes in einer Walzstraße unter Nutzung des letzen Gerüsts der Walzstraße als Zugverringerer
US9221088B2 (en) * 2009-04-21 2015-12-29 Fairmont Technologies, Llc Stretch roll forming
EP2460597A1 (fr) 2010-12-01 2012-06-06 Siemens Aktiengesellschaft Procédé de commande d'une voie de laminage en tandem, dispositif de commande et/ou de réglage pour une voie de laminage en tandem, code de programme lisible par machine, support de stockage et voie de laminage en tandem
US9956600B2 (en) * 2011-08-02 2018-05-01 Fairmount Technologies, Llc Universal dies of controllable curvature
JP6233614B2 (ja) * 2016-01-27 2017-11-22 Ｊｆｅスチール株式会社 熱延鋼帯の製造設備列および熱延鋼帯の製造方法
JP6551625B1 (ja) * 2018-01-10 2019-07-31 日本製鉄株式会社 形鋼の圧延方法、形鋼の製造ライン及び形鋼の製造方法
EP3883701B1 (fr) 2018-11-23 2022-10-19 John Cockerill S.A. Laminoir à froid souple et son procédé de conversion
EP3791971A1 (fr) 2019-09-10 2021-03-17 Primetals Technologies Austria GmbH Laminage à froid d'un article à laminer dans un train de laminage pourvu d'une pluralité de cages de laminoir
DE102019131761A1 (de) * 2019-11-25 2021-05-27 Norbert Umlauf Walzlinie
DE102020209347B3 (de) 2020-07-24 2021-12-09 Technische Universität Bergakademie Freiberg Verfahren zum beschleunigten Herstellen von weichgeglühtem Bandstahl

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Also Published As

Publication number Publication date
BRPI0719132A2 (pt) 2014-02-04
RU2009117323A (ru) 2010-11-20
WO2008043605A2 (fr) 2008-04-17
DE102006048427B3 (de) 2008-05-21
CN101522326B (zh) 2011-09-07
WO2008043605A3 (fr) 2008-06-26
RU2460598C2 (ru) 2012-09-10
US20100050727A1 (en) 2010-03-04
CN101522326A (zh) 2009-09-02

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