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US20070095121A1 - Combined operating modes and frame types in tandem cold rolling mills - Google Patents

Combined operating modes and frame types in tandem cold rolling mills Download PDF

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Publication number
US20070095121A1
US20070095121A1 US10/583,303 US58330304A US2007095121A1 US 20070095121 A1 US20070095121 A1 US 20070095121A1 US 58330304 A US58330304 A US 58330304A US 2007095121 A1 US2007095121 A1 US 2007095121A1
Authority
US
United States
Prior art keywords
rolls
roll
strip
work
cvc
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.)
Abandoned
Application number
US10/583,303
Other languages
English (en)
Inventor
Andreas Ritter
Rudiger Holz
Horst Oemkes
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
Original Assignee
Individual
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 Individual filed Critical Individual
Assigned to SMS DEMAG AS reassignment SMS DEMAG AS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: OEMKES, HORST, HOLZ, RUDIGER, RITTER, ANDREAS
Publication of US20070095121A1 publication Critical patent/US20070095121A1/en
Assigned to SMS SIEMAG AKTIENGESELLSCHAFT reassignment SMS SIEMAG AKTIENGESELLSCHAFT CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SMS DEMAG AG
Abandoned 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
    • B21B13/14—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
    • 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
    • B21B1/28—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 by cold-rolling, e.g. Steckel cold mill
    • 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
    • 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
    • B21B13/023—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally the axis of the rolls being other than perpendicular to the direction of movement of the product, e.g. cross-rolling
    • 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
    • B21B2013/025—Quarto, four-high stands
    • 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
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • B21B27/021—Rolls for sheets or strips

Definitions

  • the invention concerns a method for the combined operation of individual rolling stands in a tandem cold rolling mill, comprising a pair of work rolls and a pair of backup rolls in the case of four-high rolling stands and, in addition, a pair of intermediate rolls in the case of six-high rolling stands, wherein at least the work rolls and the intermediate rolls interact with axial shifting devices.
  • the conventional plant conceptual design of a tandem cold rolling mill consists in the arrangement of several four-high rolling stands in succession.
  • the number of stands required is substantially determined by the total reduction and by the final thickness to be produced.
  • the work roll diameter has a considerable influence on the achievement of a desired final thickness and the realization of certain draft distributions (pass program design), especially in the case of relatively high-strength grades.
  • the flattening behavior becomes more favorable and the required rolling force is reduced.
  • Factors relating both to the transmission of torque and to the deflection of the roll impose a limit on the extent to which the diameter can be reduced.
  • If the roll neck cross sections are inadequate for transmitting the driving torques, the work rolls can be driven by the adjacent roll by frictional engagement.
  • heavy driving elements motor, pinion gear unit, spindles
  • these elements make the mill more expensive.
  • the flatness of the strip is significantly affected not only by the vertical deflection but also by the horizontal deflection of the work rolls and intermediate rolls.
  • the horizontal shifting of the work rolls and intermediate rolls from the center plane of the stand provides the set of rolls with support of a type which significantly decreases the horizontal deflection.
  • the rolling process can be additionally influenced with respect to flatness and the roll gap by slanting the work rolls.
  • the work rolls and intermediate rolls are simultaneously pivoted relative to each other by the same amount parallel to the plane of the strip around a common pivot point at the center of the roll axis.
  • the six-high rolling stand has an additional, rapid adjusting mechanism for intermediate roll bending.
  • the six-high rolling stand thus has two independent adjusting mechanisms that affect the roll gap.
  • rapid adaptation of the roll gap to the profile of the entering strip for the purpose of avoiding flatness defects is guaranteed.
  • both adjusting mechanisms can be effectively used for flatness control.
  • the surface condition of the exiting strip can be systematically predetermined by textured (roughened) and chromium-plated rolls. To prevent marks on the final product caused by the shifting of the wear edges or to prevent ripple on the strip surface caused by the occurrence of relative speed differences across the width of the exiting strip, it is effective to realize the last stand of a tandem cold rolling mill as a six-high rolling stand.
  • the work rolls are cylindrical or are furnished with a slight camber. They are not shifted in the rolling process.
  • tandem cold rolling mills were designed with the conventional plant layout or with the described technologies throughout.
  • the objective of the invention is to realize these technologies/operating modes by a stand conceptual design with a geometrically identical set of rolls that is not limited only to a six-high rolling stand and not only to the intermediate rolls.
  • An installation for carrying out the method of the invention is characterized by the features of claim 5 .
  • the roll configuration from CVC/CVC plus technology for a six-high roll stand or four-high roll stand is used as the basis for the stand conceptual design.
  • the shiftable intermediate roll or work roll has a barrel that is longer by the CVC shifting stroke and is positioned symmetrically in the center of the stand for the neutral shift position.
  • the work roll/intermediate roll with a longer and symmetrical barrel is used during the strip edge-oriented shifting either with a cylindrical or cambered cross section.
  • barrel regions within the set of rolls are systematically shielded from the distribution of forces by optimization of the shift position of the work rolls/intermediate rolls. Deformations with negative effects that result from this are reduced, since the “principle of the ideal stand” is approached. However, the load distributions that occur in the respective contact joints increase due to the reduced contact lengths.
  • the stand conceptual designs described above are modified in accordance with the invention in such a way that the roll gap is controlled either by the shifting or the swiveling of the work roll/intermediate roll.
  • a six-high rolling stand is absolutely necessary whenever an additional adjusting mechanism for controlling the edge drop of the strip is to be implemented in the stand.
  • Two mutually independent shifting systems for the profile and flatness are needed for this purpose.
  • the plant layout is substantially determined by these criteria.
  • the range of plant configurations extends from conventional tandem cold rolling mills consisting of four-high rolling stands, to combined plants consisting of four/six-high rolling stands, to tandem cold rolling mills that consist exclusively of six-high rolling stands.
  • the basic approach for realizing a strip edge-oriented shifting strategy exclusively of the intermediate rolls and exclusively in a six-high rolling stand with the use of a geometrically identical set of rolls was described in detail in DE 100 37 004 A1.
  • FIG. 1 shows the geometry of the intermediate roll without roll cross-sectional shaping in a six-high rolling stand.
  • FIG. 2 shows the geometry of the work roll without roll cross-sectional shaping in a four-high rolling stand.
  • FIG. 3 shows the one-sided setback in the area of the barrel edge of a work roll/intermediate roll.
  • FIG. 4 shows a stand conceptual design with a lengthened intermediate roll barrel.
  • FIG. 5 shows a stand conceptual design with a lengthened work roll barrel.
  • FIGS. 6 a - 6 c show positioning of the intermediate roll setback.
  • FIGS. 7 a - 7 c show positioning of the work roll setback.
  • FIGS. 1 and 2 show the geometry of the intermediate roll/work roll 11 , 10 without roll cross sectional shaping.
  • FIG. 3 shows a schematic representation of the appearance and the geometric configuration of a one-sided setback d in the region of the barrel edge of a work roll/intermediate roll 10 , 11 .
  • a one-sided setback, as used here, is already described in detail and illustrated by a drawing in DE 100 37 004 A1.
  • the length l of the one-sided setback d in the region of a barrel edge of the work roll/intermediate roll 10 , 11 is divided into two adjacent regions a and b.
  • the transition between region a and region b can be made with or without a continuously differentiable transition.
  • this transition of the setback can also be made with a sequential setback of the dimension d resulting from the flattening according to a predetermined table.
  • the setback d is then flatter, for example, in the transition region, than a radius and is very much steeper at the end.
  • the transition to the cylindrical part is made with a correspondingly greater step in the transition between a and b (about 2 d ).
  • the diameter reduction 2 d by the setback is made in such a way that the work roll 10 in a six-high rolling stand can bend freely by the setback d of the intermediate roll 11 without any worry about contact in the region b.
  • the setback d serves only for local reduction of the load peaks that arise.
  • the one-sided setback is normally located on the service side BS for the upper work roll/intermediate roll 10 , 11 and on the drive side AS for the lower work roll/intermediate roll 10 , 11 , as illustrated in FIGS. 4 and 5 .
  • the effective principle remains the same if the setback d is placed in the opposite way on the drive side AS for the upper work roll/intermediate roll 10 , 11 and on the service side BS for the lower work roll/intermediate roll 10 , 11 .
  • FIGS. 6 a to 6 c show the axial shifting of the intermediate roll 11 by a shifting stroke m.
  • the positioning depends on the strip width and the material properties, so that the elastic behavior of the set of rolls and the effectiveness of the positive work roll bending (six-high rolling stand) can be systematically adjusted.
  • FIGS. 7 a to 7 c show the strip edge-oriented shifts of the work roll 10 , which are carried out in the same way as for the intermediate roll 11 in FIGS. 6 a to 6 c.
  • the shift position is predetermined by piecewise-linear step functions, on which the different positions of the beginning d 0 of the setback d relative to the strip edge are based.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Prostheses (AREA)
  • Toys (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
US10/583,303 2003-12-19 2004-12-01 Combined operating modes and frame types in tandem cold rolling mills Abandoned US20070095121A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10359838.3 2003-12-19
DE10359838 2003-12-19
DE102004020131A DE102004020131A1 (de) 2003-12-19 2004-04-24 Kombinierte Fahrweisen und Gerüsttypen in Kalttandemstraßen
DE102004020131.5 2004-04-24
PCT/EP2004/013623 WO2005063417A1 (de) 2003-12-19 2004-12-01 Kombinierte fahrweisen und gerüsttypen in kalttandemstrassen

Publications (1)

Publication Number Publication Date
US20070095121A1 true US20070095121A1 (en) 2007-05-03

Family

ID=34740506

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/583,303 Abandoned US20070095121A1 (en) 2003-12-19 2004-12-01 Combined operating modes and frame types in tandem cold rolling mills

Country Status (13)

Country Link
US (1) US20070095121A1 (de)
EP (1) EP1699573B1 (de)
JP (1) JP2007514548A (de)
KR (1) KR101224940B1 (de)
CN (1) CN1894053A (de)
AT (1) ATE426469T1 (de)
BR (1) BRPI0417703A (de)
CA (1) CA2548777C (de)
DE (2) DE102004020131A1 (de)
ES (1) ES2322365T3 (de)
RU (1) RU2358819C2 (de)
TW (1) TWI324093B (de)
WO (1) WO2005063417A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2492946C1 (ru) * 2012-07-31 2013-09-20 Александр Иванович Трайно Способ холодной прокатки стальных полос
US10589328B2 (en) * 2015-07-28 2020-03-17 Primetals Technologies Austria GmbH Roll crown for the specific avoidance of quarter waves

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006048427B3 (de) * 2006-10-12 2008-05-21 Siemens Ag Walzanlage, nachgerüstete Walzanlage, Walzwerk oder Walzstraße, Verfahren zum Ansteuern einer Walzanlage und Verwendung eines ersten Gerüsts einer Walzanlage
CN101633000B (zh) * 2008-07-22 2011-05-11 中冶赛迪工程技术股份有限公司 一种中间辊轴向移动装置
CN110883102B (zh) * 2019-11-29 2021-08-20 山东交通学院 一种用于热轧带钢同宽轧制条件的工作辊窜辊方法
CN111633030B (zh) * 2020-04-30 2022-03-18 首钢京唐钢铁联合有限责任公司 酸连轧机辊型配置结构及酸连轧机组

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4711116A (en) * 1982-12-06 1987-12-08 Sms Schloemann-Siemag Ag Method of operating a four-high roll stand with bendable and axially shiftable rolls
US5174144A (en) * 1990-04-13 1992-12-29 Hitachi, Ltd. 4-high rolling mill
US5655398A (en) * 1995-05-11 1997-08-12 Danieli United, A Division Of Danieli Corporation Roll crossing and shifting system
US5875663A (en) * 1996-07-18 1999-03-02 Kawasaki Steel Corporation Rolling method and rolling mill of strip for reducing edge drop
US5964116A (en) * 1997-08-23 1999-10-12 Sms Schloemann-Siemag Aktiengesellschaft Roll stand for rolling strip
US6085567A (en) * 1997-07-24 2000-07-11 Demag Italimpianti Spa Rolling stand having crossed rolls with variable setting
US6158260A (en) * 1999-09-15 2000-12-12 Danieli Technology, Inc. Universal roll crossing system
US6220071B1 (en) * 2000-01-20 2001-04-24 Mill Design & Consulting Services, Llc Method and apparatus for controlling strip edge relief in a cluster rolling mill
US6401506B1 (en) * 1998-02-27 2002-06-11 Nippon Steel Corporation Sheet rolling method and sheet rolling mill
US20030164020A1 (en) * 2000-07-29 2003-09-04 Haberkamm Klaus Dieter Method and device for band-edge orientated displacement of intermediate cylinders in a 6 cylinder frame
US7367209B2 (en) * 2003-12-18 2008-05-06 Sms Demag Ag Optimised shift strategy as a function of strip width

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JPS63264204A (ja) * 1987-04-23 1988-11-01 Mitsubishi Heavy Ind Ltd 圧延機
EP0543014B2 (de) * 1991-05-16 2004-10-27 JFE Steel Corporation Sechs-walzen-walzwerk
JP2807379B2 (ja) * 1992-02-14 1998-10-08 株式会社日立製作所 タンデム圧延機及び作業ロールクロスミル
JP3127650B2 (ja) * 1993-02-10 2001-01-29 株式会社日立製作所 タンデム圧延機
JP3209024B2 (ja) * 1995-01-13 2001-09-17 株式会社日立製作所 圧延機及び冷間圧延機
JPH08267114A (ja) * 1995-03-31 1996-10-15 Kawasaki Steel Corp 冷間圧延におけるエッジドロップ制御圧延方法
JP3803761B2 (ja) * 1997-08-27 2006-08-02 Ｊｆｅスチール株式会社 圧延機、その制御方法及び圧延形状制御方法

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4711116A (en) * 1982-12-06 1987-12-08 Sms Schloemann-Siemag Ag Method of operating a four-high roll stand with bendable and axially shiftable rolls
US5174144A (en) * 1990-04-13 1992-12-29 Hitachi, Ltd. 4-high rolling mill
US5655398A (en) * 1995-05-11 1997-08-12 Danieli United, A Division Of Danieli Corporation Roll crossing and shifting system
US5875663A (en) * 1996-07-18 1999-03-02 Kawasaki Steel Corporation Rolling method and rolling mill of strip for reducing edge drop
US6085567A (en) * 1997-07-24 2000-07-11 Demag Italimpianti Spa Rolling stand having crossed rolls with variable setting
US5964116A (en) * 1997-08-23 1999-10-12 Sms Schloemann-Siemag Aktiengesellschaft Roll stand for rolling strip
US6401506B1 (en) * 1998-02-27 2002-06-11 Nippon Steel Corporation Sheet rolling method and sheet rolling mill
US6158260A (en) * 1999-09-15 2000-12-12 Danieli Technology, Inc. Universal roll crossing system
US6220071B1 (en) * 2000-01-20 2001-04-24 Mill Design & Consulting Services, Llc Method and apparatus for controlling strip edge relief in a cluster rolling mill
US20030164020A1 (en) * 2000-07-29 2003-09-04 Haberkamm Klaus Dieter Method and device for band-edge orientated displacement of intermediate cylinders in a 6 cylinder frame
US7367209B2 (en) * 2003-12-18 2008-05-06 Sms Demag Ag Optimised shift strategy as a function of strip width

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2492946C1 (ru) * 2012-07-31 2013-09-20 Александр Иванович Трайно Способ холодной прокатки стальных полос
US10589328B2 (en) * 2015-07-28 2020-03-17 Primetals Technologies Austria GmbH Roll crown for the specific avoidance of quarter waves

Also Published As

Publication number Publication date
EP1699573B1 (de) 2009-03-25
ATE426469T1 (de) 2009-04-15
KR101224940B1 (ko) 2013-01-22
TW200529944A (en) 2005-09-16
KR20060130582A (ko) 2006-12-19
DE102004020131A1 (de) 2005-07-21
TWI324093B (en) 2010-05-01
DE502004009244D1 (de) 2009-05-07
WO2005063417A1 (de) 2005-07-14
JP2007514548A (ja) 2007-06-07
CA2548777C (en) 2011-10-11
CA2548777A1 (en) 2005-07-14
CN1894053A (zh) 2007-01-10
RU2358819C2 (ru) 2009-06-20
BRPI0417703A (pt) 2007-03-20
RU2006126054A (ru) 2008-01-27
ES2322365T3 (es) 2009-06-19
EP1699573A1 (de) 2006-09-13

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AS Assignment

Owner name: SMS DEMAG AS, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:RITTER, ANDREAS;HOLZ, RUDIGER;OEMKES, HORST;REEL/FRAME:018046/0606;SIGNING DATES FROM 20060325 TO 20060410

AS Assignment

Owner name: SMS SIEMAG AKTIENGESELLSCHAFT, GERMANY

Free format text: CHANGE OF NAME;ASSIGNOR:SMS DEMAG AG;REEL/FRAME:023725/0342

Effective date: 20090325

Owner name: SMS SIEMAG AKTIENGESELLSCHAFT,GERMANY

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Effective date: 20090325

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION