EP2509723B1 - Walzgerüst zur herstellung von walzband - Google Patents

Walzgerüst zur herstellung von walzband Download PDF

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Publication number
EP2509723B1
EP2509723B1 EP10775807.0A EP10775807A EP2509723B1 EP 2509723 B1 EP2509723 B1 EP 2509723B1 EP 10775807 A EP10775807 A EP 10775807A EP 2509723 B1 EP2509723 B1 EP 2509723B1
Authority
EP
European Patent Office
Prior art keywords
function
contour
roll
rolling stand
stand according
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.)
Revoked
Application number
EP10775807.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2509723A1 (de
Inventor
Alois Seilinger
Robert Minichmayr
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
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=43778539&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2509723(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by SIEMENS VAI METALS TECHNOLOGIES GmbH, Siemens VAI Metals Technologies GmbH Austria filed Critical SIEMENS VAI METALS TECHNOLOGIES GmbH
Publication of EP2509723A1 publication Critical patent/EP2509723A1/de
Application granted granted Critical
Publication of EP2509723B1 publication Critical patent/EP2509723B1/de
Revoked 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
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2267/00—Roll parameters
    • B21B2267/18—Roll crown; roll profile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2269/00—Roll bending or shifting
    • B21B2269/12—Axial shifting the rolls

Definitions

  • the invention relates to a rolling stand for the production of rolled strip with work rolls, which are supported on back-up rolls or intermediate rolls and back-up rolls, wherein the work rolls and / or intermediate rolls and / or back-up rolls are mutually axially displaceable in the rolling stand and each roll at least one of a back-up roll and a work roll, or from a support roll and an intermediate roll, formed roller pair, a running over the entire effective ball length curved contour.
  • a roll stand is known in which the bale contour of the rolls is described by a trigonometric function.
  • a partial or complete complement of the bale contour of the support rollers and the immediately adjacent work rolls or intermediate rolls is also known in the case of the WO 03/022470 A1 known rolling stand.
  • Such rollers are known in the art as SmartCrown®.
  • the preamble of claim 1 is based on DE3602698 ,
  • the invention has for its object to provide a rolling mill, in which, especially when a wide rolled strip is produced and rolled under high load, the forces acting on the working and backing roller maximum pressures are lower, so that increases roller life and roll breaks can be avoided ,
  • the present invention is based on additionally forming a convex curvature on a back-up roll having a curved contour which is known per se, ie, intentionally enlarging the diameter in this roll in a central region.
  • This additional curvature can be produced in such a way that an overlay function is superimposed on the roll grinding, starting from a first contour function running complementary to the adjacent work roll.
  • This overlay function may be convex or concave with respect to the back-up roll axis, depending on whether it is subtracted or added.
  • a gap which widens outwards in the unloaded state to the adjacent roller is formed in the regions lying outside the middle. This further ensures that the effect of roll bending is enhanced.
  • the profile and flatness of the rolled strip can be better controlled during production.
  • a favorable embodiment may be characterized in that a concave overlay function is subtracted from the first contour function with respect to the support roller axis. When roller grinding this subtraction can be realized very easily.
  • An alternative embodiment of the invention may be characterized in that, in the production of the contour of the support roller for the first contour function, a superposition function which is convex with respect to the support roller axis is added. Again, it comes in the bale center of the support roller to the desired thickening.
  • a preferred embodiment may be characterized in that the first contour function is formed from contour sections that are alternately concave and convex in the bale direction, the contour function being described by a trigonometric function.
  • Another favorable embodiment may be characterized in that the first contour function is formed by a polynomial function.
  • the superimposition function is formed by a symmetrical, with respect to the center of the bale, on both sides monotonous function.
  • the overlay function can also be formed by a polynomial function, a trigonometric function, a circular function or a power function.
  • the quadratic term C * x 2 causes a superposition of a parabolic contour with the opening paragraph, known from the prior art trigonometric SmartCrown® contour. If the coefficient C were zero, the two adjacent rolls complement each other again in the load-free, unshifted state.
  • FIG. 1 shows a schematic representation of the upper part of a four-high rolling mill with backup rolls according to the invention in an unloaded unbalanced state.
  • the work rolls 1, 1 'and the support rollers 2, 2' show a bale contour, which is described by a trigonometric function.
  • a first contour function 7 which complements complementary in an unloaded state with the contour of the work roll 1
  • This overlay function 8 or 8 ' is in the representation of FIG. 1 shown in the diagram above.
  • the overlay function 8 with respect to the support roller axis 9 is concave.
  • the concave overlay function 8 is subtracted from the first contour function 7.
  • the result is the contour 5 of the support roller 2, which in FIG. 1 is drawn by dashed lines and described by the contour function 10. (The same applies to the case of the convex overlay function 8 ', which according to another embodiment of the invention is added to the contour function 7).
  • FIG. 2 shows in a diagram a calculated load distribution between a work roll 1 and a support roller 2.
  • the abscissa shows the position relative to the center of the roll stand, plotted on the ordinate the force related to the unit length.
  • the curve 11 shows the load distribution for the case of fully complementary roll grinding, the contour of the work roll and the support roll being described by a trigonometric function according to the known SmartCrown® technology.
  • curve 12 shows the load distribution in the case of an inventive contour function 10 of the support roller 2.
  • This contour function 10 went from a superposition of the known Trigonometric contour function 7 with a function, - in the present example a quadratic function -, forth. Like from the FIG. 2 can be clearly seen, takes place a load transfer to the center of the roller.
  • the graphical representation of the result of the calculation shows vividly that even with wide rolling stands with back-up rolls, which were deliberately cambered in the middle, load peaks can be reduced and, thanks to the invention, an equalization of the load distribution can be achieved.
  • This equalization of the load distribution has the advantage that the roll life can be increased by the invention and the risk of cracking or even roll breaks is reduced.
  • the effect of equalizing the load distribution according to the invention is, of course, not limited to the above-described four-high rolling stand, but also leads to a reduction of load peaks and to a homogenization of the load profile in the load distribution between intermediate rolls and back-up rolls in a six-high rolling stand.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Rolls And Other Rotary Bodies (AREA)
EP10775807.0A 2009-12-10 2010-11-04 Walzgerüst zur herstellung von walzband Revoked EP2509723B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0195509A AT509107B1 (de) 2009-12-10 2009-12-10 Walzgerüst zur herstellung von walzband
PCT/EP2010/066776 WO2011069756A1 (de) 2009-12-10 2010-11-04 Walzgerüst zur herstellung von walzband

Publications (2)

Publication Number Publication Date
EP2509723A1 EP2509723A1 (de) 2012-10-17
EP2509723B1 true EP2509723B1 (de) 2014-10-15

Family

ID=43778539

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10775807.0A Revoked EP2509723B1 (de) 2009-12-10 2010-11-04 Walzgerüst zur herstellung von walzband

Country Status (9)

Country Link
US (1) US9789521B2 (ru)
EP (1) EP2509723B1 (ru)
KR (1) KR101703531B1 (ru)
CN (1) CN102639261B (ru)
AT (1) AT509107B1 (ru)
BR (1) BR112012013980A2 (ru)
IN (1) IN2012DN05035A (ru)
RU (1) RU2550050C2 (ru)
WO (1) WO2011069756A1 (ru)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3124130A1 (de) * 2015-07-28 2017-02-01 Primetals Technologies Austria GmbH Walzenschliff zur gezielten vermeidung von viertelwellen
EP3917694B1 (de) * 2019-01-28 2023-08-09 Primetals Technologies Germany GmbH Verändern der effektiven kontur einer lauffläche einer arbeitswalze während des warmwalzens eines walzguts in einem walzgerüst zu einem gewalzten band
CN113020255B (zh) * 2021-03-16 2022-09-06 攀钢集团西昌钢钒有限公司 一种薄板带钢的平整方法和轧制方法
CN116274403B (zh) * 2023-05-15 2023-08-18 东北大学 获取SmartCrown轧机板形执行机构调控功效系数的方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3387470A (en) * 1965-09-28 1968-06-11 Westinghouse Electric Corp Method for measuring roll crown and improving the operation of a rolling mill
JPS5322852A (en) * 1976-08-13 1978-03-02 Ishikawajima Harima Heavy Ind Rolling mill form plate crown controlling and its device
DE3213496A1 (de) 1982-04-10 1983-10-20 SMS Schloemann-Siemag AG, 4000 Düsseldorf Walzgeruest mit axial verschiebbaren walzen
US4519233A (en) * 1980-10-15 1985-05-28 Sms Schloemann-Siemag Ag Roll stand with noncylindrical rolls
JPS6192704A (ja) * 1984-10-11 1986-05-10 Nippon Steel Corp 圧延機群
DE3602698A1 (de) * 1985-04-16 1986-10-16 SMS Schloemann-Siemag AG, 4000 Düsseldorf Walzgeruest mit axial verschiebbaren walzen
DE3620197A1 (de) * 1986-06-16 1987-12-17 Schloemann Siemag Ag Walzwerk zur herstellung eines walzgutes, insbesondere eines walzbandes
DE3624241C2 (de) * 1986-07-18 1996-07-11 Schloemann Siemag Ag Verfahren zum Betrieb eines Walzwerkes zur Herstellung eines Walzbandes
RU2011448C1 (ru) * 1986-08-05 1994-04-30 Зундвигер Айзенхютте Машиненфабрик Гра унд Ко. Многовалковая прокатная клеть
DE3712043C2 (de) * 1987-04-09 1995-04-13 Schloemann Siemag Ag Walzgerüst mit axial verschiebbaren Walzen
JP2571845B2 (ja) * 1989-04-27 1997-01-16 日本鋼管株式会社 ４重式圧延機による金属帯圧延方法
US5622073A (en) * 1991-05-16 1997-04-22 Kawasaki Steel Corporation Six high rolling mill
US6119500A (en) * 1999-05-20 2000-09-19 Danieli Corporation Inverse symmetrical variable crown roll and associated method
AT410765B (de) * 2001-09-12 2003-07-25 Voest Alpine Ind Anlagen Walzgerüst zur herstellung von walzband
BRPI0713145A2 (pt) 2006-06-14 2012-03-20 Siemens Vai Metals Technologies Gmbh & Co armação de laminador para a produção de tira laminada ou chapa

Also Published As

Publication number Publication date
US20130008220A1 (en) 2013-01-10
KR20120092699A (ko) 2012-08-21
CN102639261B (zh) 2015-04-08
AT509107B1 (de) 2011-09-15
RU2550050C2 (ru) 2015-05-10
CN102639261A (zh) 2012-08-15
AT509107A1 (de) 2011-06-15
KR101703531B1 (ko) 2017-02-07
EP2509723A1 (de) 2012-10-17
WO2011069756A1 (de) 2011-06-16
US9789521B2 (en) 2017-10-17
RU2012128853A (ru) 2014-01-27
IN2012DN05035A (ru) 2015-10-09
BR112012013980A2 (pt) 2016-06-07

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