EP2509723A1 - Walzgerüst zur herstellung von walzband - Google Patents
Walzgerüst zur herstellung von walzbandInfo
- Publication number
- EP2509723A1 EP2509723A1 EP10775807A EP10775807A EP2509723A1 EP 2509723 A1 EP2509723 A1 EP 2509723A1 EP 10775807 A EP10775807 A EP 10775807A EP 10775807 A EP10775807 A EP 10775807A EP 2509723 A1 EP2509723 A1 EP 2509723A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- function
- contour
- roll
- support roller
- 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.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 claims description 20
- 230000000295 complement effect Effects 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000009826 distribution Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000013000 roll bending Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012887 quadratic function Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
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 mill for the production of rolled strip with work rolls, which are supported on backup rolls or intermediate rolls and backup rolls, wherein the
- Work rolls and / or intermediate rolls and / or back-up rolls are arranged in the rolling stand mutually axially displaceable and each roll at least one, from a back-up roll and a work roll, or from a back-up roll and a
- Intermediate roll formed roller pair, has a running over the entire effective bale length curved contour.
- 03/022470 AI known mill stand follows the bale contour of a trigonometric function.
- Such rollers are known in the art as SmartCrown®.
- 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 maximum pressures acting on the working and support roller are lower, so that increases roller life and roll breaks as possible can be avoided.
- the present invention is based on additionally forming a convex curvature on a support roll with a curved contour known per se, i. to deliberately increase the diameter of this roller in a central area.
- 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.
- Overlay function may be convex or concave with respect to the back-up roll axis, depending on whether it is subtracted or added.
- a convex curvature is formed in the middle of the support roller, so that it no longer comes to complementarily complement adjacent rollers in the unloaded state, but an increasingly larger gap is formed in the direction of the edge of the rollers. Nevertheless, the symmetry of the load distribution remains.
- 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.
- Support roller axis convex overlay function is added. Again, it comes in the bale center of the support roller to the desired thickening.
- Contour sections is formed, wherein the contour function is described by a trigonometric 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 by a
- the contour is according to the equations
- the quadratic term C * x 2 causes a superposition of a parabolic contour with the above-mentioned, 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.
- Figure 2 is a diagram in which a calculated
- the work rolls 1, 1 'and the support rollers 2, 2' show a bale contour, which is described by a trigonometric function. Starting from a first contour function 7, which is in a
- Contour function 10 of the support roller 2 characterized by the first contour function 7 with a superposition function 8 or 8 'superimposed.
- This overlay function 8 or 8 ' is shown in the illustration of Figure 1 in the diagram above.
- the overlay function 8 with respect to the support roller axis 9 is concave. According to the concave overlay function 8 of the first
- Overlay function 8 ' which according to another embodiment of the invention is added to the contour function 7).
- Bale center 4 This profile shape according to the invention can be easily taken from the graphic representation of FIG. Starting from the center of the bale 4, an increasingly larger gap between the support roller 2 and the work roll 1 forms on the left and on the right.
- FIG. 2 shows in a diagram a calculated load distribution between a work roll 1 and a support roll 2.
- the abscissa shows the position relative to the center of the roll stand, and the ordinate the force related to the length unit.
- 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
- 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. As can be seen clearly from FIG. 2, load transfer to the middle of the roller takes place.
- the graphical representation of the result of the calculation shows vividly that even with wide rolling stands with back-up rolls, which were intentionally 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.
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)
Abstract
Description
Claims
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 true EP2509723A1 (de) | 2012-10-17 |
| EP2509723B1 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 (de) |
| EP (1) | EP2509723B1 (de) |
| KR (1) | KR101703531B1 (de) |
| CN (1) | CN102639261B (de) |
| AT (1) | AT509107B1 (de) |
| BR (1) | BR112012013980A2 (de) |
| IN (1) | IN2012DN05035A (de) |
| RU (1) | RU2550050C2 (de) |
| WO (1) | WO2011069756A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104722585A (zh) * | 2015-03-13 | 2015-06-24 | 李慧峰 | 板带轧机不对称板形的补偿方法 |
| EP3124130A1 (de) * | 2015-07-28 | 2017-02-01 | Primetals Technologies Austria GmbH | Walzenschliff zur gezielten vermeidung von viertelwellen |
| US11919059B2 (en) | 2019-01-28 | 2024-03-05 | Primetals Technologies Germany Gmbh | Changing the effective contour of a running surface of a working roll during hot rolling of rolling stock in a roll stand to form a rolled strip |
| 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)
| 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 |
| EP0255714B1 (de) * | 1986-08-05 | 1992-05-06 | SUNDWIGER EISENHÜTTE MASCHINENFABRIK GmbH & CO. | Vielwalzen-Walzgerüst mit paarweise gegensinnig verschiebbaren, verjüngte Enden aufweisenden Zwischenwalzen |
| 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 |
| UA93090C2 (uk) * | 2006-06-14 | 2011-01-10 | Сіменз Ваі Металз Текнолоджіс Гмбх Енд Ко | Кліть прокатного стана для виготовлення катаних металевих штаб або катаного листового металу |
-
2009
- 2009-12-10 AT AT0195509A patent/AT509107B1/de not_active IP Right Cessation
-
2010
- 2010-11-04 BR BR112012013980A patent/BR112012013980A2/pt not_active Application Discontinuation
- 2010-11-04 IN IN5035DEN2012 patent/IN2012DN05035A/en unknown
- 2010-11-04 RU RU2012128853/02A patent/RU2550050C2/ru active
- 2010-11-04 US US13/515,069 patent/US9789521B2/en active Active
- 2010-11-04 WO PCT/EP2010/066776 patent/WO2011069756A1/de not_active Ceased
- 2010-11-04 KR KR1020127017828A patent/KR101703531B1/ko not_active Expired - Fee Related
- 2010-11-04 EP EP10775807.0A patent/EP2509723B1/de not_active Revoked
- 2010-11-04 CN CN201080055818.3A patent/CN102639261B/zh active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2011069756A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011069756A1 (de) | 2011-06-16 |
| US20130008220A1 (en) | 2013-01-10 |
| KR20120092699A (ko) | 2012-08-21 |
| IN2012DN05035A (de) | 2015-10-09 |
| AT509107B1 (de) | 2011-09-15 |
| US9789521B2 (en) | 2017-10-17 |
| KR101703531B1 (ko) | 2017-02-07 |
| RU2550050C2 (ru) | 2015-05-10 |
| CN102639261B (zh) | 2015-04-08 |
| EP2509723B1 (de) | 2014-10-15 |
| RU2012128853A (ru) | 2014-01-27 |
| BR112012013980A2 (pt) | 2016-06-07 |
| AT509107A1 (de) | 2011-06-15 |
| CN102639261A (zh) | 2012-08-15 |
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