EP1070557A2 - Procédé pour aplanir des bandes métalliques - Google Patents

Procédé pour aplanir des bandes métalliques Download PDF

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Publication number
EP1070557A2
EP1070557A2 EP00107865A EP00107865A EP1070557A2 EP 1070557 A2 EP1070557 A2 EP 1070557A2 EP 00107865 A EP00107865 A EP 00107865A EP 00107865 A EP00107865 A EP 00107865A EP 1070557 A2 EP1070557 A2 EP 1070557A2
Authority
EP
European Patent Office
Prior art keywords
metal strip
strip
rolling
temperature
temperature profile
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Withdrawn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
EP00107865A
Other languages
German (de)
English (en)
Inventor
Rolf Dipl.-Ing. Noé
Andreas Dr. mont. Dipl.-Ing. Noé
Stefan Dipl.-Phys. Sonntag
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.)
BWG Bergwerk und Walzwerk Maschinenbau GmbH
Original Assignee
BWG Bergwerk und Walzwerk Maschinenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BWG Bergwerk und Walzwerk Maschinenbau GmbH filed Critical BWG Bergwerk und Walzwerk Maschinenbau GmbH
Publication of EP1070557A2 publication Critical patent/EP1070557A2/fr
Withdrawn legal-status Critical Current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
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
    • 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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
    • B21B37/32—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by cooling, heating or lubricating the rolls
    • 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
    • B21B2001/228—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 skin pass rolling or temper rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0071—Levelling the rolled product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/20—Temperature
    • B21B2261/21—Temperature profile
    • 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
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B21B27/106—Heating the rolls
    • 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
    • B21B38/006—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product

Definitions

  • the invention relates to a method for leveling Metal bands, especially for removing ripples and band sabers, when rolling and / or straightening and / or Stretching the respective metal strip under the given Belt tension.
  • - Rolling means cold rolling and skin pass rolling or finishing rolling.
  • Straightening is, for example, multi-roll straightening or to understand stretch bending reports.
  • the invention includes the leveling of sheets and plates made of metal.
  • the residual ripples after cold rolling are typically up to 100 I-units, after the skin pass or Roughing up to 30 I-units and after straightening up to 10 I-units.
  • An I unit corresponds to a difference in length two tape strips in a metal tape of 10 ⁇ m / m.
  • the Flatness is z. B. off-line on flatness measuring tables or can be measured online with flatness measuring rollers. Through modern rolling technologies with actuators to improve flatness (Roll bending or roll axial displacement) Flatness of the belts further improved via flatness regulations. An ideal flatness or an almost ideal flatness is still not available.
  • the invention has for its object a method of type described at the outset in such a way that the flatness of the metal band on simple and at the same time inexpensive way to improve and in particular Waviness and / or band sabers almost completely suppressed become.
  • the temperature profile before rolling and / or Straightening and / or stretching the metal strip are generated. But there is also the possibility that the temperature profile after rolling and / or straightening and / or drawing stretching of the metal strip is generated.
  • the invention goes first of all from the knowledge that zone-by-zone warming of the metal strip due to the thermal expansion only to change the thickness of the metal strip but especially to a change in the tension distribution in the Metal tape leads. For example, local Warming reduce the tensile stress locally. But there is one Relationship between the leveling level (e.g. leveling level or degree of stretch) and the tension exists the level of leveling can be manipulated in a targeted manner over the range.
  • the temperature profile can also be used the winding of the metal strip are generated. This is especially with metal strips made of alloys with a tendency to crawl and z. B. positive thickness profile appropriate. If such a tape is wound up under tension, it is concentrated the train on the middle of the belt. Im wound up With conventional methods, coils are high Tangential and radial stresses, which are the creep-yield limit can exceed. The tapes will be some time later processed again, they are with center bowls afflicted. Now the tape is in the middle before winding heated or cooled at the edges, so the tensile stress in the middle of the belt and thus the belt tension in the Coil reduced.
  • the temperature distribution of the metal strip on the inlet side or outlet side measured the bandwidth.
  • the one to be created in the metal strip Temperature profile is dependent on the measured or controlled temperature distribution. This ensures that the temperature distribution in the metal band actually the one you want Temperature distribution corresponds. Consequently, the Flatness of the metal strip through the control or regulation continue to improve. Thereby a traversing temperature measurement across the bandwidth.
  • the inlet side or outlet side is expedient Measurement of the temperature distribution for the target / actual control the flatness control close to a flatness measuring point, e.g. B. a flatness measuring roller or contactless by means of one or more traversing pyrometers.
  • the temperature profile after rolling and / or straightening and / or drawing stretching zone-wise cooling or heating of the metal strip is evened out.
  • a flat tape can be wound up become.
  • it is not in the method according to the invention is about local heating of the metal strip Influencing roll gap geometry. Rather, the Heating or cooling the tension distribution in the metal strip and thus affects the leveling level.
  • the rolling or straightening can also be done without tape tension, e.g. B. at Sheets or sheets in which the mean tensile stress is 0 is.
  • the metal strip is heated zone by zone preferably non-contact, for example inductive.
  • the metal strip 1 shows a section of a device for carrying it out of the inventive method for leveling Metal bands shown. Leave with this device especially ripples and band sabers in the course of the Eliminate skin pass rolling under belt tension. Goes through this the metal strip 1 is a skin pass mill 2, the metal strip 1 in the skin pass mill 2 with one over the bandwidth changeable skin pass degree by a predetermined amount is plastically deformed. In the metal strip 1 is by zone-wise heating or cooling over the range changeable temperature profile to influence the tension distribution generated. There are several about that Bandwidth distributed heating elements 3 are provided. By the Temperature profile and the associated change in The degree of skin passage can be targeted manipulate. In Fig. 1 it can be seen that the heating elements 3 are arranged on the inlet side, d. H.
  • the temperature profile is set before the skin pass rolling of the metal strip 1 generated.
  • the heating is done inductively.
  • the temperature distribution of the metal strip 1 measured over the bandwidth on the inlet side. That in that Metal strip 1 temperature profile to be generated is then in Dependence on the measured temperature distribution controlled or regulated.
  • Temperature measuring devices 4 are provided, which have a Control and / or regulating unit 5 with the heating elements 3 are connected.
  • a traversing temperature measurement across the bandwidth performed.
  • the temperature measuring device 4 is as traversing pyrometer.
  • the flatness control can measure the Temperature distribution but also near a flatness measuring point 6, e.g. B. a flatness measuring roller 6.
  • Fig. 1 shows that several of the rollers 10 contacting the metal strip 1 Skin pass mill 2 for keeping the roller temperature constant be warmed or cooled across the range. To do this 2 more in the area of the rollers 10 of the skin pass mill Heating elements 11 arranged.
  • FIGS. 2 to 5 a conventional method for leveling metal strips in the course of skin pass rolling with a strip temperature that is constant over the width will first be explained with reference to FIGS. 2 to 5.
  • the metal strip to be leveled initially has pronounced edge waves before rolling, ie the plastic stretch is greater in the edge region of the strip than in the middle of the strip.
  • FIG. 2 shows the distribution of the (relative) plastic elongation ⁇ pl, o (y) over the strip width B before rolling. Since the metal tape passes through the skin pass mill at train, results in the total strain ⁇ ges, o (y) from the sum of plastic strain ⁇ pl, o (y) and the elastic strain ⁇ el, o (y).
  • the tape tension is so high that all tape strips are under tension and the total elongation ⁇ tot, o (y) is constant over the tape width. Therefore, the distribution of the elastic strain ⁇ el, o (y) over the bandwidth results directly from the distribution of the plastic strain ⁇ pl, o (y) (cf. FIG. 3).
  • the width of the metal strip is plastically lengthened by the skin pass rolling in accordance with the skin pass degree ⁇ D (y).
  • the distribution of the skin pass degree ⁇ D (y) over the bandwidth is shown in FIG. 4.
  • the original plastic strain ⁇ pl, o (y) is also shown in FIG. 4.
  • Fig. 4 makes it clear that the skin pass with the skin pass degree ⁇ D (y) in the middle of the belt is more elongated than in the edge areas. Accordingly, the new plastic strain ⁇ pl, 1 (y) results with a flatter course over the bandwidth than that of the original plastic strain ⁇ pl, o (y). This is particularly clear from a comparative analysis of FIGS. 2 and 5. As a result, the edge waves were reduced by skin pass rolling, but not completely eliminated. Complete elimination is not possible with the conventional methods because the distribution of the skin pass degree ⁇ D (y) cannot be varied arbitrarily by mechanical means. In the exemplary embodiment it is assumed that the adjustment ranges of the flatness actuators have been fully utilized.
  • FIG. 6 shows the plastic elongation ⁇ pl, o (y) of the metal strip to be planed in the left area.
  • a temperature profile that can be varied over the bandwidth is now generated by zone-by-zone heating.
  • This temperature profile leads to a thermal expansion profile ⁇ th, 0 (y), as is shown in the right area of FIG. 6.
  • ⁇ th, 0 (y) the thermal expansion profile
  • 10 shows that there is a connection between the tensile stress ⁇ Z in the metal strip and the skin pass degree ⁇ D.
  • FIG. 11 shows that not only the skin pass degree ⁇ D , but also the degree of stretching ⁇ st depends on the tensile stress ⁇ Z during stretch bending straightening or tensile stretching, so that the above considerations can readily be transferred to straightening or tensile stretching.
  • a ripple at a constant strip temperature is assumed after rolling 20 I-units.
  • the average tension ⁇ Z is 80 MPa.
  • the dependence of the skin pass degree ⁇ D on the tensile stress ⁇ Z is 0.1% per 50 MPa.
  • the elastic modulus E of the metal strip is 200,000 MPa.
  • the degree of skin pass ⁇ D at the edge of the metal strip is reduced by 0.02%. This corresponds to a value of 20 * 10 -5 and consequently 20 I-units compared to the middle. This means that the undulations in the edge area of the metal strip are theoretically completely eliminated. However, it must be taken into account that the thickness of the metal strip entering the roll gap in the edge area has also increased by a factor of 5 * 10 -5 , so that a slightly higher degree of skin pass results with a constant roll gap geometry. However, this effect is negligibly small, so that with the method according to the invention, ripples or band sabers in the edge area can actually be almost completely eliminated.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)
EP00107865A 1999-07-17 2000-04-12 Procédé pour aplanir des bandes métalliques Withdrawn EP1070557A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19933610A DE19933610A1 (de) 1999-07-17 1999-07-17 Verfahren zum Planieren von Metallbändern
DE19933610 1999-07-17

Publications (1)

Publication Number Publication Date
EP1070557A2 true EP1070557A2 (fr) 2001-01-24

Family

ID=7915160

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00107865A Withdrawn EP1070557A2 (fr) 1999-07-17 2000-04-12 Procédé pour aplanir des bandes métalliques

Country Status (4)

Country Link
US (1) US6327883B1 (fr)
EP (1) EP1070557A2 (fr)
CA (1) CA2312665A1 (fr)
DE (1) DE19933610A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102085535B (zh) * 2009-12-03 2012-11-14 唐山国丰钢铁有限公司 一种精轧机的调平控制方法
WO2017076633A1 (fr) * 2015-11-05 2017-05-11 Thyssenkrupp Steel Europe Ag Procédé et installation de fabrication de bandes ou de tôles composites
CN107803402A (zh) * 2017-10-31 2018-03-16 邵阳高华工贸实业有限公司 一种用于高端装备制造的冷轧钢板制备方法

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DE10218959B4 (de) * 2002-04-27 2011-07-28 SMS Siemag Aktiengesellschaft, 40237 Vorrichtung zum Einstellen des maximal übertragbaren Zugkraftverhältnisses eines Bandes im Reibschluß mit einem S-Umlenkrollenpaar
JP3901111B2 (ja) * 2003-03-06 2007-04-04 トヨタ自動車株式会社 圧延装置および圧延方法
AT501314B1 (de) * 2004-10-13 2012-03-15 Voest Alpine Ind Anlagen Verfahren und vorrichtung zum kontinuierlichen herstellen eines dünnen metallbandes
US20070251289A1 (en) * 2006-04-28 2007-11-01 Medtronic, Inc. System and method for producing component for medical device
DE102007006809B4 (de) 2007-02-07 2009-04-16 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Verfahren und Vorrichtung zum kontinuierlichen Zugrecken eines Metallbandes
DE102007006810B3 (de) 2007-02-07 2008-10-02 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Vorrichtung zum Planieren von Metallbändern
DE102007007560A1 (de) * 2007-02-15 2008-08-21 Siemens Ag Verfahren zur Unterstützung einer wenigstens teilweise manuellen Steuerung einer Metallbearbeitungsstraße
CA2679434A1 (fr) * 2007-03-28 2008-10-02 Sms Siemag Aktiengesellschaft Procede et dispositif d'enroulement de feuillard a chaud
CN101780478B (zh) * 2009-01-21 2012-07-04 中冶赛迪工程技术股份有限公司 一种热轧带钢及钢板板形和精度控制的方法和设备
EP2527052A1 (fr) * 2011-05-24 2012-11-28 Siemens Aktiengesellschaft Procédé de fonctionnement pour une voie de laminage
KR101449180B1 (ko) 2012-12-21 2014-10-08 주식회사 포스코 고강도강의 형상 교정 및 압연 방법과 형상 교정 장치
US9889480B2 (en) * 2013-03-11 2018-02-13 Novelis Inc. Flatness of a rolled strip
US9236168B2 (en) 2013-06-26 2016-01-12 Commscope Technologies Llc Methods for manufacturing an electrical cable
JP6020475B2 (ja) * 2014-01-20 2016-11-02 Ｊｆｅスチール株式会社 冷間圧延設備
DE102014111501B4 (de) * 2014-08-12 2017-10-12 Thyssenkrupp Ag Warmumformvorrichtung und Verfahren zum Herstellen von pressgehärteten Formbauteilen aus Stahlblech
DE202017007387U1 (de) 2016-09-27 2021-02-11 Novelis Inc. Kompakte kontinuierliche Glühlösungswärmebehandlung
EP3520565B1 (fr) 2016-09-27 2020-07-22 Novelis, Inc. Induction de chaleur à aimant rotatif
DE102020106730A1 (de) 2020-03-12 2021-09-16 Manfred Wanzke Richtverfahren für Band, Draht, Profile, Stäbe, Rohre, Zuschnitte, Sandwichbleche und Platinen, in welchem das zu richtende Material eingangs eine beliebige, annähernd gleichmäßige Krümmung erfährt, die nachfolgend im Durchlauf final gerichtet wird
DE102020007286B4 (de) 2020-11-30 2023-05-04 VDEh-Betriebsforschungsinstitut Gesellschaft mit beschränkter Haftung Spannrollensatz für eine Richtanlage zum Richten eines Bandes, Richtanlage, Nachwalzgerüstanlage und Verfahren zum Betreiben einer Richtanlage
DE102022122115A1 (de) 2022-09-01 2024-03-07 Biegeform Solutions GmbH Richtmaschine

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US3727907A (en) * 1970-09-21 1973-04-17 Cutters Machine Co Inc Cloth feeding and spreading mechanism for cloth spreading machine
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
AT345237B (de) 1976-12-28 1978-09-11 Voest Ag Vorrichtung zum walzen von band- oder tafelfoermigem walzgut
DE3515459A1 (de) * 1985-04-29 1986-10-30 Achenbach Buschhütten GmbH, 5910 Kreuztal Einrichtung zum regeln der planheit von bandfoermigem walzgut, insbesondere feinbaendern, fuer kaltwalzwerke
US4765169A (en) * 1987-11-02 1988-08-23 The Monarch Machine Tool Co. Method of tension leveling nonhomogeneous metal sheet

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102085535B (zh) * 2009-12-03 2012-11-14 唐山国丰钢铁有限公司 一种精轧机的调平控制方法
WO2017076633A1 (fr) * 2015-11-05 2017-05-11 Thyssenkrupp Steel Europe Ag Procédé et installation de fabrication de bandes ou de tôles composites
RU2711335C2 (ru) * 2015-11-05 2020-01-16 Бвг Бергверк- Унд Вальцверк- Машиненбау Гмбх Способ и устройство для изготовления биметаллических полос или листов
CN107803402A (zh) * 2017-10-31 2018-03-16 邵阳高华工贸实业有限公司 一种用于高端装备制造的冷轧钢板制备方法

Also Published As

Publication number Publication date
DE19933610A1 (de) 2001-01-25
US6327883B1 (en) 2001-12-11
CA2312665A1 (fr) 2001-01-17

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