EP1761347B1 - Verfahren zum walzen von bändern in einem walzgerüst - Google Patents

Verfahren zum walzen von bändern in einem walzgerüst Download PDF

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Publication number
EP1761347B1
EP1761347B1 EP05748365A EP05748365A EP1761347B1 EP 1761347 B1 EP1761347 B1 EP 1761347B1 EP 05748365 A EP05748365 A EP 05748365A EP 05748365 A EP05748365 A EP 05748365A EP 1761347 B1 EP1761347 B1 EP 1761347B1
Authority
EP
European Patent Office
Prior art keywords
working
displacement
cyclic
rolls
roll bending
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
EP05748365A
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German (de)
English (en)
French (fr)
Other versions
EP1761347A1 (de
Inventor
Uwe BAUMGÄRTEL
Ralf Wachsmann
Jürgen Seidel
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 Siemag AG
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Filing date
Publication date
Application filed by SMS Siemag AG filed Critical SMS Siemag AG
Publication of EP1761347A1 publication Critical patent/EP1761347A1/de
Application granted granted Critical
Publication of EP1761347B1 publication Critical patent/EP1761347B1/de
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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
    • B21B37/42—Control of flatness or profile during rolling of strip, sheets or plates using a combination of roll bending and axial shifting of the rolls
    • 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
    • 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
    • B21B37/38—Control of flatness or profile during rolling of strip, sheets or plates using roll bending
    • 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
    • B21B29/00—Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls ; Roll bending devices, e.g. hydraulic actuators acting on roll shaft ends
    • 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
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/18—Adjusting or positioning rolls by moving rolls axially

Definitions

  • the invention relates to a method for rolling strips in a roll stand of a rolling mill, consisting of two axially displaceable work rolls, which are provided with a CVC cut or similar contour whose curved contour can be expressed by a polynomial of third or higher order, from two Back-up rolls and optionally additionally two intermediate rolls and from a work roll bending system and optionally an additional intermediate roll bending system, wherein the work roll bending or the work roll displacement are used to regulate the band flatness and the strip profile as adjusting mechanisms case by case.
  • a generic method is eg off JP-A 0 601 53 22 known.
  • CVC Continuously Variable Crown
  • the work roll bending rarely reaches its limits and is available for dynamic control.
  • the disadvantage is that at one conventional shifting practice of the CVC work rolls, the shift range used within a rolling program is relatively low and the work roll wear compensation takes place only in a limited form. As a compromise, therefore, a flat CVC grinding is used, ie a reduced CVC adjustment range with the corresponding displacement stroke.
  • the inventive cyclical change of work roll bending on CVC rolls which have a relatively large parabolic profile range, has not yet been practiced and is new.
  • This cyclical change in work roll deflection which can be assisted by the rolling force or by the rolling force distribution within the rolling train, initiates an additional cyclic shift of the work rolls in the case of CVC rolls with simultaneous work roll wear uniformity.
  • the large parabolic profile adjustment range of the CVC work rolls remains available at all times in order to be able to react to changing boundary conditions such as back-up roller wear, thermal crown, rolling force or stand load etc.
  • the cyclic shifting of the work rolls is then preferably carried out either in the positive, negative or in the entire displacement range.
  • the cyclic shifting of the work rolls is directly dictated or indirectly enforced by the cyclic alteration of the work roll bend, the interaction of the work roll displacement and the work roll bend being controlled online by a process model.
  • the cyclic changing of the work roll positions or bending is carried out only in the allowable range in which the strip quality parameters such as flatness (parabolic and higher order), band contour quality and band profile level can be met, to comply with these criteria by the process model - online monitors - the cyclic shift stroke and / or the preset range for the work roll bend can then be restricted.
  • the cyclic changing the work rolls is activated either directly after a roll change or shortly thereafter, for example after the first five bands.
  • the intermediate roll deflection or intermediate roll displacement or a backup roll profile actuator may be used in an analogous manner to produce a cyclic variation of the work roll positions.
  • FIG. 1 are the bandwidths to be rolled according to the rolling program BB and in FIG. 2 the finished strip thicknesses BD are each plotted in mm as the ordinate. Until about Band No. 40, different strip widths BB and finished strip thicknesses BD are rolled, after which strips of constant width BB of about 1200 mm and constant finished strip thickness BD of about 2.8 mm are produced.
  • FIGS. 3 and 4 are the results obtained for the required work roll displacement position VP in mm ( Fig. 3 ) and the applied work roll bending force BK in kN ( Fig. 4 ) for a high support roller wear or high scaffolding load.
  • the work roll positions are mainly adjusted in the positive range in this conventional operation, so as to. B. to compensate for the burden of the scaffolding. In some cases, the maximum shift limit VP max is reached.
  • FIGS. 5 and 6 were according to the FIGS. 3 and 4 the results obtained for a low back-up wear or a low skeleton load.
  • the curves obtained for the work roll displacement position VP ( Fig. 5 ) and for the work roll bending force BK ( Fig. 6 ) are similar in their characteristics to those of FIGS. 3 and 4 , Wherein, with approximately the same bending force, the work roll displacement values VP - corresponding to the changed boundary condition - are operated more in the middle displacement range. What is common is that, overall, in a conventional shifting practice of the CVC work rolls, the shift amount is relatively low and according to the rolling program, the work roll bending force BK is constant starting from about the 40th band (BK const ).
  • FIGS. 7 and 8 are the results obtained for the work roll displacement position VP in mm ( Fig. 7 ) and the applied work roll bending force BK in kN ( Fig. 8 ) for high back-up roll wear or high scaffolding load.
  • the work roll displacement position VP in mm Fig. 7
  • the applied work roll bending force BK in kN Fig. 8
  • FIGS. 9 and 10 were according to the FIGS. 7 and 8 the results obtained for a low back-up wear or a low skeleton load.
  • Characteristic of the operation according to the invention of the cyclic shifting is the opposite interaction between the work roll displacement position VP and the work roll bending force BK, which becomes clear in the drawing figures.
  • the CVC work rolls are displaced in the negative direction VP n , a bend in the positive direction BKp can be seen and vice versa.
  • a haromönischere work wearer contour has a positive effect on the quality of the band contour.
  • the emergence of Bandwulsten or increased edge band edge drop (edge drop) can thus be compensated more efficiently.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Pretreatment Of Seeds And Plants (AREA)
  • Paper (AREA)
EP05748365A 2004-06-28 2005-06-03 Verfahren zum walzen von bändern in einem walzgerüst Active EP1761347B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004031354A DE102004031354A1 (de) 2004-06-28 2004-06-28 Verfahren zum Walzen von Bändern in einem Walzgerüst
PCT/EP2005/005991 WO2006000290A1 (de) 2004-06-28 2005-06-03 Verfahren zum walzen von bändern in einem walzgerüst

Publications (2)

Publication Number Publication Date
EP1761347A1 EP1761347A1 (de) 2007-03-14
EP1761347B1 true EP1761347B1 (de) 2009-08-26

Family

ID=34969452

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05748365A Active EP1761347B1 (de) 2004-06-28 2005-06-03 Verfahren zum walzen von bändern in einem walzgerüst

Country Status (15)

Country Link
US (1) US8096161B2 (zh)
EP (1) EP1761347B1 (zh)
JP (1) JP4850829B2 (zh)
KR (1) KR101146934B1 (zh)
CN (1) CN1976768B (zh)
AT (1) ATE440680T1 (zh)
BR (1) BRPI0509662A (zh)
CA (1) CA2570865C (zh)
DE (2) DE102004031354A1 (zh)
ES (1) ES2328595T3 (zh)
RU (1) RU2333810C2 (zh)
TW (1) TWI347236B (zh)
UA (1) UA81202C2 (zh)
WO (1) WO2006000290A1 (zh)
ZA (1) ZA200607180B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111801173A (zh) * 2018-03-09 2020-10-20 首要金属科技德国有限责任公司 在轧制扁平轧件时避免磨损边缘

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006051728B4 (de) * 2006-10-30 2013-11-21 Outokumpu Nirosta Gmbh Verfahren zum Walzen von Metallbändern, inbesondere von Stahlbändern
US20150174648A1 (en) * 2013-12-24 2015-06-25 Posco Method of Manufacturing Thin Martensitic Stainless Steel Sheet Using Strip Caster with Twin Rolls and Thin Martensitic Stainless Steel Sheet Manufactured by the Same
JP6813101B2 (ja) 2017-10-31 2021-01-13 東芝三菱電機産業システム株式会社 圧延スタンドのロール摩耗分散方法および圧延システム
CN108213087B (zh) * 2018-01-08 2019-05-03 东北大学 一种分散cvc工作辊窜辊位置的方法
CN108273853B (zh) * 2018-01-19 2019-09-03 山东钢铁集团日照有限公司 一种热连轧机工作辊智能窜辊方法
JP6767686B2 (ja) * 2018-03-23 2020-10-14 Ｊｆｅスチール株式会社 金属帯の冷間圧延方法
DE102018212074A1 (de) * 2018-07-19 2020-01-23 Sms Group Gmbh Verfahren zum Ermitteln von Stellgrößen für aktive Profil- und Planheitsstellglieder für ein Walzgerüst und von Profil- und Mittenplanheitswerten für warmgewalztes Metallband

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1362514A1 (ru) 1981-07-17 1987-12-30 Г.П.Руденский и О.И.Малыгин Способ прокатки полос
JPS60250806A (ja) * 1984-05-29 1985-12-11 Kawasaki Steel Corp 熱間圧延法
JPS6368201A (ja) 1986-09-09 1988-03-28 Kawasaki Heavy Ind Ltd 圧延方法
SU1452631A1 (ru) 1986-11-14 1989-01-23 Краснодарский политехнический институт Способ непрерывной прокатки листов
JP2616917B2 (ja) 1987-01-24 1997-06-04 株式会社日立製作所 ロールシフト圧延機による圧延方法
JP2665020B2 (ja) * 1990-06-04 1997-10-22 川崎製鉄株式会社 熱間仕上圧延機及び熱間仕上圧延機列
JPH05261415A (ja) * 1992-03-19 1993-10-12 Hitachi Ltd 圧延機の制御方法及び圧延方法
JPH0615322A (ja) * 1992-07-03 1994-01-25 Sumitomo Metal Ind Ltd 熱間圧延時の板クラウン制御方法
CN1082851C (zh) 1994-07-08 2002-04-17 石川岛播磨重工业株式会社 兼用辊位移与辊弯曲的轧机和辊位移式轧机
JP3185629B2 (ja) * 1995-02-09 2001-07-11 日本鋼管株式会社 圧延機および圧延方法
DE19654068A1 (de) 1996-12-23 1998-06-25 Schloemann Siemag Ag Verfahren und Vorrichtung zum Walzen eines Walzbandes
US6119500A (en) * 1999-05-20 2000-09-19 Danieli Corporation Inverse symmetrical variable crown roll and associated method
JP3689037B2 (ja) * 2001-12-07 2005-08-31 株式会社日立製作所 タンデム圧延機の形状制御方法および装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111801173A (zh) * 2018-03-09 2020-10-20 首要金属科技德国有限责任公司 在轧制扁平轧件时避免磨损边缘
CN111801173B (zh) * 2018-03-09 2022-06-14 首要金属科技德国有限责任公司 在轧制扁平轧件时避免磨损边缘

Also Published As

Publication number Publication date
DE102004031354A1 (de) 2006-01-19
TW200609048A (en) 2006-03-16
ES2328595T3 (es) 2009-11-16
UA81202C2 (en) 2007-12-10
US20070199363A1 (en) 2007-08-30
ZA200607180B (en) 2008-04-30
ATE440680T1 (de) 2009-09-15
JP2008504128A (ja) 2008-02-14
DE502005007991D1 (de) 2009-10-08
CN1976768A (zh) 2007-06-06
CN1976768B (zh) 2012-11-14
TWI347236B (en) 2011-08-21
CA2570865C (en) 2012-03-13
KR20070021167A (ko) 2007-02-22
CA2570865A1 (en) 2006-01-05
KR101146934B1 (ko) 2012-05-22
JP4850829B2 (ja) 2012-01-11
BRPI0509662A (pt) 2007-10-09
US8096161B2 (en) 2012-01-17
RU2006135636A (ru) 2008-04-20
WO2006000290A1 (de) 2006-01-05
RU2333810C2 (ru) 2008-09-20
EP1761347A1 (de) 2007-03-14

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