EP2777832A1 - Vorrichtung zur Inbetriebsetzung der Drehbewegung der Arbeitswalzen eines Walzwerks, und Methode zum Auswechseln der genannten Walzen - Google Patents

Vorrichtung zur Inbetriebsetzung der Drehbewegung der Arbeitswalzen eines Walzwerks, und Methode zum Auswechseln der genannten Walzen Download PDF

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Publication number
EP2777832A1
EP2777832A1 EP13290055.6A EP13290055A EP2777832A1 EP 2777832 A1 EP2777832 A1 EP 2777832A1 EP 13290055 A EP13290055 A EP 13290055A EP 2777832 A1 EP2777832 A1 EP 2777832A1
Authority
EP
European Patent Office
Prior art keywords
rolling
rolls
working
strip
cylinder
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Withdrawn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
EP13290055.6A
Other languages
English (en)
French (fr)
Inventor
Francis Charre
Jean-Paul Faure
Yves Guillot
Stanislas Mauuary
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 Austria GmbH
Original Assignee
Siemens VAI Metals Technologies GmbH Austria
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 VAI Metals Technologies GmbH Austria filed Critical Siemens VAI Metals Technologies GmbH Austria
Priority to EP13290055.6A priority Critical patent/EP2777832A1/de
Priority to EP13290299.0A priority patent/EP2777833B1/de
Priority to BR102014005650-5A priority patent/BR102014005650B1/pt
Priority to CN201410093646.9A priority patent/CN104043650B/zh
Publication of EP2777832A1 publication Critical patent/EP2777832A1/de
Withdrawn legal-status Critical Current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
    • 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
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/02—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills
    • 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
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/06—Drives for metal-rolling mills, e.g. hydraulic drives for non-continuously-operating mills or for single stands

Definitions

  • the present invention relates to a device for rotating work rolls of a rolling mill according to the preamble of claim 1, as well as a method of changing work rolls according to the preamble of claim 10.
  • a minimum roll configuration includes sets of rolls said lower and upper to the band (here in horizontal scrolling), each of the sets comprising an intermediate roll rotating in surface contact and friction a working roll for rolling the band, particularly when using small diameters of cylinders which are not able to withstand rolling torques sufficiently high compared to the rolling conditions given.
  • An object of the present invention is to propose a device for rotating a working roll of a rolling strip rolling mill capable of ensuring a docking better dynamically mastered of at least one lower work roll on the scrolling tape.
  • a docking therefore provides to ensure a rotation of the working cylinder without sliding with the intermediate cylinder causing said rotation. Also, slippage effects between the work roll and the web should be minimized or even eliminated.
  • the device according to the invention should be advantageously extended for optimal rotation of all the lower and upper work rolls.
  • this device according to the invention should be suitable for changing cylinders on the fly in a multi-stand mill, in particular of 18-High type, without limitation to other types such as 4-High, 6-High, etc.
  • Such a device for rotating a work roll is proposed through the features of claim 1 as well as a method of changing at least said roll through the features of claim 10.
  • a set of subclaims also has advantages of the invention.
  • cylinders are shown, in particular the four clusters of three lateral support cylinders (SSRS, SSRI).
  • the device according to the invention as well as the method of changing the cylinder are not limited to high type 18 rolling mill cages, but can be extended to any other cage configuration such as High type.
  • Figure 2 presents an embodiment of a device according to the invention in a rolling mill stand type 18-High (although it appears as a cage type 6-High without the four clusters of three lateral support rollers), said cage being open in side view according to the tape scroll.
  • each of the cages comprising a set of rollers lower than the strip and a set of rolling rolls greater than the strip
  • the said set of lower rolling rolls comprising at least one roll lower intermediate (IRI) driving in rotation by surface contact and friction a lower working cylinder (WRI)
  • said set of upper rolling rolls comprising at least one upper intermediate roll (IRS) driving in rotation by surface contact and friction an upper work roll (WRS)
  • said lower and upper working rolls being adapted to being brought into contact with respectively one of the lower and upper faces of the strip to be rolled, said intermediate and working rolls having axes of rotation aligned in at least one vertical plane (here in the Z direction) or a close vicinity of said plan
  • the clusters of lateral guide cylinders (respectively SSRI, SSRS) of the lower and upper work
  • Said device according to the invention is characterized in that, before contacting the lower working cylinder on the strip for active rolling positions, a vertical thrust means (R1i, R2i, EI, EI ') (or P1I, P2I, EI, EI ': see figure 6 ) exerts a first downward force on the lower working cylinder (WRI).
  • a vertical thrust means R1i, R2i, EI, EI '
  • P1I, P2I, EI, EI ' see figure 6
  • the device according to the invention also provides that, before contacting the upper working cylinder on the strip for active rolling positions, the vertical thrust means (R1s, R2s, ES, ES ') (or P1S , P2S, ES, ES ': see figure 6 ) exerts a second force upward on the upper working cylinder (WRS).
  • the vertical thrust means R1s, R2s, ES, ES '
  • P1S , P2S, ES, ES ' see figure 6
  • the main characteristic of the thrust means is to produce a controlled clamping effect between each working roll and its associated intermediate roll in order to better control the non-slip spinning relative to each other as well as between the working cylinder and the belt approached or un-docked.
  • the vertical biasing means exerts the first and second forces under intensity values avoiding any sliding which in any way penalizes the points of surface contact between each intermediate roll and its associated working roll.
  • This tightening criterion is major in order to better control the friction required between the working and intermediate rolls and a fortiori the conditions of optimal docking speeds of the working roll on the moving strip.
  • the device according to the invention advantageously not only not to stop rolling in progress due to a change of cylinders of work, but also guarantees rolling continuity under a required tolerance.
  • the vertical thrust means comprises a first and a second module (EI, EI 'ES, ES') of elevator type (here in the Z direction), the said first module being able to push , and spreading or approaching each lower and upper working cylinder out of or towards the band.
  • EI, EI 'ES, ES' a second module
  • these elements make it possible to exert a precise thrust force from the working cylinder to the adjoined intermediate cylinder, avoiding thus advantageously sliding effects.
  • This is a simple configuration that can be easily arranged on CL, CR bases attached to columns of the rolling mill stand.
  • thrust means could be more complexly realized such as chocks guiding work rolls, but they would singularly complicate the plans of the cage and increase its cost.
  • Such configurations can not universally adapt to any roll stand, such as for example that type 18-High for which such chocks and support by bending are unsuitable.
  • the device provides that the first and second modules (EI, EI 'ES, ES') of elevator type respectively comprise a first and a second set of at least one roller or contact support roll (R1s , R2s; R1i, R2i), each of said sets being disposed at least at one end and ideally at the right of each of the trunnions arranged at the ends of each lower and upper working cylinder (WRI, WRS), said rollers or rollers of the first set of rollers (R1i, R2i) exerting the first downward force on the lower work roll (WRI) and said rollers or rollers of the second set of rollers (R1s, R2s) exerting the second force to the high on the upper working cylinder (WRS).
  • the first and second modules (EI, EI 'ES, ES') of elevator type respectively comprise a first and a second set of at least one roller or contact support roll (R1s , R2s; R1i, R2i), each of said sets being
  • the device according to the invention provides that the first and second modules (EI, EI 'ES, ES') of elevator type respectively comprise a first and a second set of at least one support pad (P1I, P2I; P1S , P2S) allowing contact (and support / guidance) with at least one bearing type ring (B1I, B2I; B1S, B2S) assembled at the right of each end and ideally at the right of each of the journals (Twri, Twrs) disposed at the ends of each lower and upper work roll (WRI, WRS), said first set of shoes (P1I, P2I) exerting the first force down on the lower work roll (WRI) and said second set of pads (P1S, P2S) exerting the second force upward on the upper work roll (WRS).
  • the sets of pads finally allow by vertical translation (Z direction) to push the rings to exert the required thrust force, but can
  • the figure 4 also presents for this purpose a complementary view (in front of the tape running) of the device according to the invention in a closed rolling mill cage.
  • This very simple system of rollers, or rollers, or skids associated with bearing-type rings (B1I, B2I, B1S, B2S) allows a precise balancing of the force exerted on the working cylinders of the thrust means and a free rolling and without relative sliding with the intermediate cylinder associated in rotation at the top, for example of the lower working cylinder.
  • the device according to the invention provides that at least one of the vertical thrust means (R1i, R2i; R1s, R2s) can exert a thrust component via the roller (s) or rollers or pads (P1i, P2i; P1s, P2s: see figure 6 ) associated with bearing rings (B1I, B2I, B1S, B2S) on the working cylinder (lower or / and upper) so that said cylinder is laterally displaceable in a horizontal direction (X) relative to the intermediate cylinder associated.
  • the vertical thrust means R1i, R2i; R1s, R2s
  • this relative lateral displacement between the working roll and the intermediate roll is variable under an interval for example of value [-10mm; + 10mm].
  • This relative lateral displacement (known as “offset") lateral is necessary during rolling operation to wedge the sets of cylinders relative to their bearing points inside the roll stand and also for optimize the balance of forces and torques exerted on the cylinders between them.
  • This function can then be easily achieved by introducing a pivot (Roff) between two rollers or rollers (R1i, R2i; R1s, R2s) or pads (P1i, P2i; P1s, P2s: see figure 6 ).
  • Alternatives means for exerting a thrust component inducing a small horizontal offset between a cylinder of work and its associated intermediate cylinder can also be performed, such as for example by means of an additional horizontal translation cylinder to the roller support (EI, ES).
  • EI, ES roller support
  • the presented thrust means including a pivot is perfectly integrable to the device according to the invention and to any type of multi-roll mill stands such as 18-High, 20-High etc., the device according to the invention itself being particularly suitable for a rolling mill comprising high 18 type cages.
  • the device according to the invention is suitable for a rolling mill comprising working rolls of small diameter such as in the case of rolling stainless steel strip, or high tensile steel and particularly for a low strip thickness close to 0.1 mm at the end of the rolling mill.
  • working rolls of small diameter such as in the case of rolling stainless steel strip, or high tensile steel and particularly for a low strip thickness close to 0.1 mm at the end of the rolling mill.
  • such cylinders wear out quickly which reduces production and involves many changes of working cylinder on the fly not to stop the rolling.
  • the control of the change of work rolls on the fly is improved and more effective, which makes it possible to avoid stopping always too long during the changes of said cylinders.
  • the figure 3 is by analogy from the figure 2 and presents the device according to the invention in a closed rolling mill stand and / or under rolling force in lateral view according to the tape running.
  • the lower working cylinder is pressed against the belt and rolls the latter under great external force exerted by means of support rollers (BURS, BURI) coupled to a clamping unit (not shown) generally comprising two hydraulic clamping cylinders.
  • BURS support rollers
  • BURI support rollers
  • the upper work roll is pressed against the strip and rolled the latter under great external force exerted by means of the support cylinders (BURS, BURI) coupled to a clamping unit (not shown) generally comprising two hydraulic clamping cylinders.
  • the thrust means (R1s, R2s, ES, ES ') or (P1s, P2S, EI, EI'): see figure 6 ) according to the invention in this tightening phase no longer exerts pushing force on the upper working cylinder (WRS) upwards, because in the clamping position, said upper working cylinder is no longer in contact with a game similar to the previous game (GAP) with the thrust means (rollers / support rollers) to leave full part in the rolling and the associated rotation of the cylinders.
  • the thrust means is not a simple elevator or geometric positioner of cylinders, but it provides an anti-slip between working rolls and intermediate cylinders by pushing when the cage is in the open position, as well as when rotating the work rolls for change on the fly during rolling.
  • BURI, BURS lower and upper additional bearing cylinders
  • IRI lower intermediate cylinder
  • BURS upper intermediate cylinder
  • figure 4 is the device (simplified, without additional cylinders) according to figure 2 in an open rolling mill cage, in order to better visualize the working cylinders and the intermediate cylinders - here represented in motorized state by the rotating motor drives (MIRI, MIRS) - as well as the rollers / rolls of the thrust means.
  • MIRI, MIRS rotating motor drives
  • This method of change on the fly characterized in that the first cage (C2) moves apart (de-docking) its working rolls out of the belt, after the second

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
EP13290055.6A 2013-03-13 2013-03-13 Vorrichtung zur Inbetriebsetzung der Drehbewegung der Arbeitswalzen eines Walzwerks, und Methode zum Auswechseln der genannten Walzen Withdrawn EP2777832A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP13290055.6A EP2777832A1 (de) 2013-03-13 2013-03-13 Vorrichtung zur Inbetriebsetzung der Drehbewegung der Arbeitswalzen eines Walzwerks, und Methode zum Auswechseln der genannten Walzen
EP13290299.0A EP2777833B1 (de) 2013-03-13 2013-12-03 Vorrichtung zur Inbetriebsetzung der Drehbewegung der Arbeitswalzen eines Walzwerks, und Methode zum Auswechseln der genannten Walzen
BR102014005650-5A BR102014005650B1 (pt) 2013-03-13 2014-03-12 dispositivo para rotação de cilindros de trabalho de uma usina de laminação e método para trocar cilindros de trabalho
CN201410093646.9A CN104043650B (zh) 2013-03-13 2014-03-13 用于旋转轧机的工作辊的设备及用于改变所述辊的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13290055.6A EP2777832A1 (de) 2013-03-13 2013-03-13 Vorrichtung zur Inbetriebsetzung der Drehbewegung der Arbeitswalzen eines Walzwerks, und Methode zum Auswechseln der genannten Walzen

Publications (1)

Publication Number Publication Date
EP2777832A1 true EP2777832A1 (de) 2014-09-17

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP13290055.6A Withdrawn EP2777832A1 (de) 2013-03-13 2013-03-13 Vorrichtung zur Inbetriebsetzung der Drehbewegung der Arbeitswalzen eines Walzwerks, und Methode zum Auswechseln der genannten Walzen
EP13290299.0A Active EP2777833B1 (de) 2013-03-13 2013-12-03 Vorrichtung zur Inbetriebsetzung der Drehbewegung der Arbeitswalzen eines Walzwerks, und Methode zum Auswechseln der genannten Walzen

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP13290299.0A Active EP2777833B1 (de) 2013-03-13 2013-12-03 Vorrichtung zur Inbetriebsetzung der Drehbewegung der Arbeitswalzen eines Walzwerks, und Methode zum Auswechseln der genannten Walzen

Country Status (3)

Country Link
EP (2) EP2777832A1 (de)
CN (1) CN104043650B (de)
BR (1) BR102014005650B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109092902A (zh) * 2018-06-20 2018-12-28 新疆八钢铁股份有限公司 防止第一架轧机咬钢打滑的轧制方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104624730B (zh) * 2015-01-23 2016-08-10 泰安华鲁锻压机床有限公司 一种快开式板料矫平机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0416880A2 (de) * 1989-09-08 1991-03-13 Hitachi, Ltd. Walzwerk und Walzverfahren
US6098439A (en) * 1997-10-10 2000-08-08 Kvaerner Metals Clecim Device for changing the rolls and/or the intermediate rolls in a roll stand and storage rack for such a device
WO2009015341A1 (en) 2007-07-25 2009-01-29 Mick Radio-Nuclear Instruments, Inc. Seed anchor
WO2009153415A1 (fr) 2008-06-19 2009-12-23 Siemens Vai Metals Technologies Sas Méthode de changement de cylindre dans un laminoir pour une bande d'acier en défilement continu
EP2135690A1 (de) 2008-06-19 2009-12-23 Siemens Aktiengesellschaft Konti-Walzstrasse mit Ein- und/oder Ausgliedern von Walzgerüsten im laufenden Betrieb
WO2011107165A1 (fr) 2010-03-03 2011-09-09 Siemens Vai Metals Technologies Sas Cage de laminage

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60238007A (ja) * 1984-05-11 1985-11-26 Ishikawajima Harima Heavy Ind Co Ltd 圧延機
CN85101137B (zh) * 1985-04-01 1988-01-06 株式会社日立制作所 轧机
IT1310880B1 (it) * 1999-07-20 2002-02-22 Danieli Off Mecc Metodo per il controllo statico e dinamico della planarita'di prodotti piani laminati
CN201008878Y (zh) * 2007-02-14 2008-01-23 中冶京诚工程技术有限公司 多辊轧机
JP5138397B2 (ja) * 2008-01-25 2013-02-06 三菱日立製鉄機械株式会社 圧延機及びそれを備えたタンデム圧延機
CN102553938B (zh) * 2011-12-20 2014-08-06 河南鸽瑞复合材料有限公司 带侧推装置的多辊轧机的控制方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0416880A2 (de) * 1989-09-08 1991-03-13 Hitachi, Ltd. Walzwerk und Walzverfahren
US6098439A (en) * 1997-10-10 2000-08-08 Kvaerner Metals Clecim Device for changing the rolls and/or the intermediate rolls in a roll stand and storage rack for such a device
WO2009015341A1 (en) 2007-07-25 2009-01-29 Mick Radio-Nuclear Instruments, Inc. Seed anchor
WO2009153415A1 (fr) 2008-06-19 2009-12-23 Siemens Vai Metals Technologies Sas Méthode de changement de cylindre dans un laminoir pour une bande d'acier en défilement continu
EP2135690A1 (de) 2008-06-19 2009-12-23 Siemens Aktiengesellschaft Konti-Walzstrasse mit Ein- und/oder Ausgliedern von Walzgerüsten im laufenden Betrieb
WO2011107165A1 (fr) 2010-03-03 2011-09-09 Siemens Vai Metals Technologies Sas Cage de laminage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109092902A (zh) * 2018-06-20 2018-12-28 新疆八钢铁股份有限公司 防止第一架轧机咬钢打滑的轧制方法
CN109092902B (zh) * 2018-06-20 2019-09-27 新疆八一钢铁股份有限公司 防止第一架轧机咬钢打滑的轧制方法

Also Published As

Publication number Publication date
CN104043650B (zh) 2017-09-01
EP2777833A1 (de) 2014-09-17
EP2777833B1 (de) 2016-03-09
BR102014005650B1 (pt) 2020-12-15
BR102014005650A2 (pt) 2015-07-07
CN104043650A (zh) 2014-09-17

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