EP1694447B1 - Optimierte verschiebestrategien als funktion der bandbreite - Google Patents

Optimierte verschiebestrategien als funktion der bandbreite Download PDF

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Publication number
EP1694447B1
EP1694447B1 EP04797824A EP04797824A EP1694447B1 EP 1694447 B1 EP1694447 B1 EP 1694447B1 EP 04797824 A EP04797824 A EP 04797824A EP 04797824 A EP04797824 A EP 04797824A EP 1694447 B1 EP1694447 B1 EP 1694447B1
Authority
EP
European Patent Office
Prior art keywords
rolls
roll
cvc
work
shifting
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.)
Active
Application number
EP04797824A
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German (de)
English (en)
French (fr)
Other versions
EP1694447A1 (de
Inventor
Andreas Ritter
Rüdiger Holz
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
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SMS Demag AG
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Publication of EP1694447A1 publication Critical patent/EP1694447A1/de
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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
    • 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
    • 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
    • B21B37/40—Control of flatness or profile during rolling of strip, sheets or plates using axial shifting of the rolls

Definitions

  • the invention relates to a method of optimizing shifting strategies as a function of belt width for the best use of the advantages of CVC / CVC plus technology in belt edge shift operation in 4/6 roll stands comprising a pair of work rolls and back up rolls plus a pair of intermediate rolls at 6-roll stands, wherein at least the work rolls and the intermediate rolls cooperate with devices for axial displacement, and wherein each work / intermediate roll has a bale extended by the CVC Verschiebehub on one side regrind in the bale edge.
  • a generic method and a generic device are eg off DE-A 100 37 004 known.
  • 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 mill thus has two independent in effect on the nip actuators.
  • a rapid adaptation of the roll gap to the incoming strip profile is thus ensured in order to avoid flatness defects.
  • both actuators can be effectively used in the flatness control.
  • 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. This has the consequence that the laterally projecting beyond the rolling stock and thus not involved in the rolling process ends of the work rolls are bent by the force exerted on them rolling force in the direction of the rolling stock.
  • the object of the invention is that of the DE 100 37 004 A1 To extend known band edge-oriented shift strategy on the work rolls so that a scaffolding concept with geometrically equal set of rollers is realized.
  • the stated object is achieved by the characterizing features of claim 1 by specifying the displacement position of the displaceable working / intermediate roller as a function of the bandwidth at which the working / intermediate roller is positioned in different positions relative to the strip edge, wherein within different bandwidth ranges while the shift position of the respective roller is predetermined by piecewise linear approach function.
  • the free parameters of the attachment function are chosen so variably predefinable that the predetermined positions are set relative to the strip edge.
  • the roller configuration made of the CVC / CVC plus technology is used for a 6-roll or 4-roll stand.
  • the work / intermediate roll with longer and symmetrical bale is used during the strip edge-oriented shifting either with a cylindrical, crowned or superimposed CVC / CVC plus -schliff.
  • a one-sided regrind 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 specifically influenced.
  • the roll gap can thus be optimally adjusted.
  • the cylindrical bale of the working / intermediate roller can additionally be overlaid with a curved contour (eg CVC / CVC plus grinding).
  • the required displacement stroke can be reduced since the start of the regrind of the work / intermediate roller is positioned clearly in front of the strip edge.
  • the load distribution is reduced as a result of the longer contact length.
  • the maximum of the load distribution due to CVC / CVC plus grinding shifts increasingly towards the middle of the framework with decreasing bandwidth.
  • the beginning of the regrind is positioned outside, on or within the band edge, ie already within the bandwidth.
  • 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 opposite displacement of the CVC / CVC plus rollers also results in the possibility of a targeted influencing of the band profile in the sense of a preset actuator. If the curved contour is selected in such a way that it generates no or minimum crown in the maximum negative displacement position and a maximum crown in the maximum positive displacement position, then the bandwidth-dependent framework deformation can be partially compensated. The remaining part is compensated for by the decreasing bandwidth increasing effect of positive work roll bending.
  • FIG. 1 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 1 of the unilateral regrind d in the region of a ball edge of the working / intermediate roller 10, 11, is divided into two juxtaposed 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 regression y (x) is then, for example in the transition region shallower than a radius and at the end much steeper. For reasons of grinding technology, the transition to the cylindrical part via a correspondingly larger heel in the transition between a and b is carried out (about 2d).
  • the diameter reduction 2d by the regrind y (x) is predetermined such that in a 6-roll stand the work roll 10 can bend freely around the regrind y (x) of the intermediate roll 11 without having to fear contact in the region b.
  • the regrind y (x) is only used to locally reduce the load peaks that occur.
  • the one-sided regrind is on the upper working / intermediate roller 10, 11 on the operating side BS and on the lower working / intermediate roller 10, 11 on the drive side AS, as in the FIGS. 2 and 3 is cited.
  • the principle of action however, nothing changes when reversing the reverse on 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 attaches.
  • FIG. 2 the roll set of a 6-roll stand is shown, consisting of the work rolls 10, the intermediate rolls 11 with extended bales and the support rollers 12.
  • the rolled strip 14 is arranged symmetrically in the middle of the frame.
  • Pisitive displacement means that the upper work / intermediate roll 10, 11 is displaced in the direction of the drive side AS and the lower work / intermediate roll 10, 11 in the direction of the operating side BS.
  • FIGS. 4a-4c and 5a-5c is the axial displacement of the working / intermediate roller 10, 11 by a displacement m again shown in detail.
  • the shift position is predetermined in different bandwidth regions by piecewise linear attachment functions, which are based on different positions of the beginning d 0 of the regression relative to the band edge.
  • the sliding work / intermediate roll is not, as is conventional, with a fixed dimension m as in the FIGS. 4 and 5 shown, positioned in front of the strip edge, but depending on the bandwidth in different positions P ( ⁇ , ⁇ , ⁇ , see Table 1) relative to the band edge.
  • the displacement position VP (w, x, y, z, see Table 1) of the respective roller is predetermined by piecewise linear approach function.
  • the free parameters of the attachment function are chosen such that the positions P given in Table 1 are set relative to the band edge. This also results in the displacement position VP of the roller.
  • the parameters can be variably specified.
  • FIG. 6 is shown in the form of a diagram an example of the specification of the bandwidth-dependent displacement position of the intermediate roll in a 6-roll stand. Plotted on the ordinate, the predetermined displacement position VP in mm and on the abscissa of the bandwidth area B. Parallel to the abscissa in the upper part of the diagram, the maximum displacement position VP max . and in the lower part the minimum displacement position VP min . drawn in dashed form.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Steroid Compounds (AREA)
  • Amplifiers (AREA)
  • Chemical Vapour Deposition (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Wire Bonding (AREA)
EP04797824A 2003-12-18 2004-11-11 Optimierte verschiebestrategien als funktion der bandbreite Active EP1694447B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10359402A DE10359402A1 (de) 2003-12-18 2003-12-18 Optimierte Verschiebestrategien als Funktion der Bandbreite
PCT/EP2004/012796 WO2005058517A1 (de) 2003-12-18 2004-11-11 Optimierte verschiebestrategien als funktion der bandbreite

Publications (2)

Publication Number Publication Date
EP1694447A1 EP1694447A1 (de) 2006-08-30
EP1694447B1 true EP1694447B1 (de) 2009-05-27

Family

ID=34672857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04797824A Active EP1694447B1 (de) 2003-12-18 2004-11-11 Optimierte verschiebestrategien als funktion der bandbreite

Country Status (15)

Country Link
US (1) US7367209B2 (ru)
EP (1) EP1694447B1 (ru)
JP (1) JP2007514546A (ru)
KR (1) KR101187363B1 (ru)
CN (1) CN1894054B (ru)
AT (1) ATE432130T1 (ru)
BR (1) BRPI0417704B1 (ru)
CA (1) CA2545071C (ru)
DE (2) DE10359402A1 (ru)
ES (1) ES2324916T3 (ru)
RU (1) RU2367531C2 (ru)
TW (1) TWI324539B (ru)
UA (1) UA90255C2 (ru)
WO (1) WO2005058517A1 (ru)
ZA (1) ZA200600992B (ru)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004020131A1 (de) * 2003-12-19 2005-07-21 Sms Demag Ag Kombinierte Fahrweisen und Gerüsttypen in Kalttandemstraßen
EP2026915B2 (de) * 2006-06-14 2017-09-27 Primetals Technologies Austria GmbH Walzgerüst zur herstellung von walzband oder blech
DE102009021414A1 (de) * 2008-12-17 2010-07-01 Sms Siemag Aktiengesellschaft Walzgerüst zum Walzen eines insbesondere metallischen Guts
CN101927264B (zh) * 2009-06-23 2012-05-30 宝山钢铁股份有限公司 一种精轧带钢局部高点的控制方法
CN106269901B (zh) * 2015-06-09 2018-03-09 宝山钢铁股份有限公司 一种六辊cvc平整机的窄边浪控制方法
EP3124130A1 (de) * 2015-07-28 2017-02-01 Primetals Technologies Austria GmbH Walzenschliff zur gezielten vermeidung von viertelwellen
CN108580558A (zh) * 2018-04-10 2018-09-28 燕山大学 二次冷轧机组小变形条件下轧辊工艺参数优化设定方法
CN115382917A (zh) * 2022-08-15 2022-11-25 首钢智新迁安电磁材料有限公司 一种用于防止卷取机上卷翻卷的装置及控制方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6012213A (ja) 1983-07-04 1985-01-22 Kawasaki Steel Corp 鋼板の冷間圧延方法
US4823585A (en) * 1984-02-29 1989-04-25 Kawasaki Steel Corporation Hot rolling method
DE3602698A1 (de) * 1985-04-16 1986-10-16 SMS Schloemann-Siemag AG, 4000 Düsseldorf Walzgeruest mit axial verschiebbaren walzen
US4730475A (en) * 1986-05-06 1988-03-15 International Rolling Mills Consultants, Inc. Rolling mill method
JPH0615309A (ja) * 1992-07-01 1994-01-25 Sumitomo Metal Ind Ltd 板圧延用の多重式圧延機
DE19719318C2 (de) * 1997-05-08 2003-06-12 Sms Demag Ag Verfahren zur Beeinflussung der Bandkontur im Kantenbereich eines Walzenbandes
JP3458731B2 (ja) * 1998-11-11 2003-10-20 Ｊｆｅスチール株式会社 冷間タンデム圧延機における形状制御方法および形状制御装置
IT1310776B1 (it) * 1999-09-14 2002-02-22 Danieli Off Mecc Procedimento di controllo del profilo del nastro in una gabbiadi laminazione per nastri e/o lamiere
DE10037004B4 (de) * 2000-07-29 2004-01-15 Sms Demag Ag Walzgerüst für bandkantenorientiertes Verschieben der Zwischenwalzen in einem 6-Walzen-Gerüst
DE10039035A1 (de) * 2000-08-10 2002-02-21 Sms Demag Ag Walzgerüst mit einem CVC-Walzenpaar

Also Published As

Publication number Publication date
CN1894054A (zh) 2007-01-10
RU2367531C2 (ru) 2009-09-20
ATE432130T1 (de) 2009-06-15
TW200523045A (en) 2005-07-16
CA2545071A1 (en) 2005-06-30
CN1894054B (zh) 2010-05-26
TWI324539B (en) 2010-05-11
BRPI0417704A (pt) 2007-03-20
DE10359402A1 (de) 2005-07-14
BRPI0417704B1 (pt) 2018-04-24
UA90255C2 (ru) 2010-04-26
US7367209B2 (en) 2008-05-06
US20070101792A1 (en) 2007-05-10
RU2006125728A (ru) 2008-01-27
DE502004009541D1 (de) 2009-07-09
KR101187363B1 (ko) 2012-10-02
ES2324916T3 (es) 2009-08-19
EP1694447A1 (de) 2006-08-30
WO2005058517A1 (de) 2005-06-30
ZA200600992B (en) 2007-01-31
KR20060107744A (ko) 2006-10-16
JP2007514546A (ja) 2007-06-07
CA2545071C (en) 2011-01-11

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