EP2379243A2 - Verfahren zum kalibrieren zweier zusammenwirkender arbeitswalzen in einem walzgerüst - Google Patents
Verfahren zum kalibrieren zweier zusammenwirkender arbeitswalzen in einem walzgerüstInfo
- Publication number
- EP2379243A2 EP2379243A2 EP09799266A EP09799266A EP2379243A2 EP 2379243 A2 EP2379243 A2 EP 2379243A2 EP 09799266 A EP09799266 A EP 09799266A EP 09799266 A EP09799266 A EP 09799266A EP 2379243 A2 EP2379243 A2 EP 2379243A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- work rolls
- rolling
- determined
- rolls
- pivot
- 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 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000006073 displacement reaction Methods 0.000 claims abstract description 35
- 238000004364 calculation method Methods 0.000 claims description 12
- 238000005452 bending Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims 2
- 238000013000 roll bending Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000013178 mathematical model Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
- B21B38/105—Calibrating or presetting roll-gap
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
-
- 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
- B21B2269/00—Roll bending or shifting
- B21B2269/12—Axial shifting the rolls
- B21B2269/14—Work rolls
-
- 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
-
- 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
- B21B37/58—Roll-force control; Roll-gap control
-
- 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
- B21B37/58—Roll-force control; Roll-gap control
- B21B37/64—Mill spring or roll spring compensation systems, e.g. control of prestressed mill stands
Definitions
- the invention relates to a method for calibrating a Walzgerustes, wherein for determining the relative pivot position of the set of rollers for setting a symmetrical Waizspaltes and / or for determining the elongation of the rolling mill before the actual rolling of the set of rollers under specification of a radial force pressed against each other and the resulting deformation of the rolling mill is preferably measured on the piston-Zyhnder unit, wherein the determined therefrom pivot position of the set of rollers and / or the determined therefrom Gerüstmodul (M) is used in the later rolling of a rolling stock between the work rolls in the employment of the set of rolls
- M Gerüstmodul
- Roll mills are well known, in which two cooperating work rolls are trimmed by (at least) two support rolls, for example, to roll a steel strip.
- Axialverschiebesysteme be provided for the work rolls are the work rolls during calibration in a normal position (axial displacement is zero)
- the work rolls are pressed directly against each other and recorded the expansion curve, from the Gerustmodul determined and the roll gap set in parallel or symmetrically This takes place before the rolling process
- the conditions during calibration are calculated using a computer program.
- the bandwidth is usually much narrower than the contact width between the two work rolls. This results in different contact ratios once during calibration and once during rolling. This in turn leads to different frame strains in the two named cases Rolling (in particular when using CVC rollers), the Gerustmodul varies depending on the relative axial displacement between the work rolls Furthermore, the geometric conditions in the nip and between the working and support rolls change during axial displacement This applies in particular when no cylindrical rollers but those with asymmetric profiles are used (for example, with CVC grinding or similar form)
- the work rolls of rolling mills with displacement are usually twice as much shift amount longer than the length of the support rollers or ko conventional rolling mills without axial displacement the length of the work rolls
- the invention therefore has the object of developing the method of the type described above so that it is possible in a simple manner to take into account the effect of different elongation of the framework during calibration and rolling so that a higher accuracy in rolling should be achieved
- the work rolls or the intermediate rolls in a Sextogerust
- the solution of this object by the invention is characterized in that the work rolls are axially adjustable starting from a non-axially displaced zero position relative to each other, wherein the determination of the pivot position for the adjustment of a symmetrical roll gap and / or the determination of the Gerustmoduls at a relative shift position of the work rolls, which is not equal to the zero position (Kalib ⁇ erposition), wherein the determined pivot position and / or the value for the Gerustmodul stored and calculated for the further calculation of Swivel position and / or the employment of the set of rolls are used during rolling of the rolling stock
- a very preferred embodiment provides that the determination of the pivot position for the setting of a symmetrical roll gap and / or the determination of the Gerustmoduls takes place at least twice, namely in a first relative axial position of the work rolls and in a second relative axial position of the work rolls, wherein the first relative axial position is different from the second relative axial position and wherein the at least two determined pivot positions and / or values for the frame module are stored and used mathematically for the further calculation of the pivot position and / or the position of the set of rolls during rolling of the rolling stock
- more than two pivot positions and / or frame modules are determined at more than two different relative axial positions of the work rolls.
- three to six pivot positions and / or rack modules can be determined at three to six different relative axial positions of the work rolls and / or one of the Gerustmodule be determined at an intended maximum relative axial displacement of the work rolls
- the at least two determined pivot positions and / or frame modules at different relative axial positions of the work rolls can be brought into a functional context and based on the further calculation.
- Alternatively and simplifying can also be provided that from the at least two determined pivot positions and / or Gerustmodulen at different relative axial positions of the work rolls an average value is formed and this is the basis for further calculation
- the work rolls can in principle have any outer surface, for example a cylindrical outer contour. Likewise, a crowned or concave outer contour of the work rolls is possible. However, it is preferably provided that an asymmetrical work roll contour is present, for example a combined crowned and concave outer contour (CVC rolls) or In general, an outer contour which can be described with a polynomial, in particular with a polynomial of at least the third order, or with a trigonometric function
- the force acting in the framework force can be determined by means of at least one load cell
- the force acting in a piston-cylinder unit for radial adjustment of the work roll force can be determined It is also possible that with - Determined force of the load cell and the force acting in the piston-cylinder unit force per gerustseite be averaged
- a further embodiment provides that the calibration takes place upon application of a bending force to the work roll. It can also be provided in training that the calibration takes place when at least two different bending forces are exerted on the work roll.
- the rolling skeleton is designed as a sex toughness with working rolls, intermediate rolls and cylindrical rolls, whereby the caliber process described above for the roll set is also carried out for the intermediate rolls.
- the Schwenkpositione ⁇ be added to set a symmetrical roll gap and / or the frame module
- the invention provides, inter alia, that the caliber process is not only in the middle position (without relative axial adjustment of the work rolls), but also in the shifted state of the work rolls.
- the contact length between the work rolls is given
- a maximum positive or negative work roll displacement position can be set. Any desired displacement position, for example the maximum displacement position, can be defined as the reference displacement position during calibration
- FIG. 1 shows schematically a rolling stand with two working and two support rolls in a first position of the work rolls during calibration, viewed in the rolling direction,
- FIG. 2 shows the rolling mill according to FIG. 1 in a second position of the work rolls during calibration
- FIG. 3 shows the course of a positioning position correction value over the working roller displacement
- the work rolls 1, 2 are cut off on support rolls 4 and 5.
- the work rolls 1, 2 are not cylindrical in the present case, but have a crowned rolling surface , which is shown in the figure ubert ⁇ e- ben
- the work rolls 1, 2 have a length L A which is greater than the length L s of the support rolls 4, 5
- the stand 3 or the work rolls 1, 2 are calibrated.
- the elongation of the rolling stand 3 is determined under a radial force acting between the work rolls 1, 2, ie the so-called Gerustmodul M is determined
- the roll gap is based on Ge - rustmitte set symmetrically (wedge-free)
- the two work rolls 1 2 are pressed directly onto one another.
- the pivot position for adjusting the symmetrical roll gap and / or the frame module M is determined at least once again, namely in a second relative axial position B of the work rolls 1, 2, as shown in FIG. 2.
- the work rolls 1, 2 shifted here in the axial direction a, in each case by a distance SPOS of a few millimeters
- the two determined values for the swivel position and / or the frame module M are stored and used for the further calculation of the employment of the work rolls 1, 2 during rolling of the rolling stock
- the Gerustmodule are different in the two relative axial positions A ( Figure 1) and B ( Figure 2) From the geometric conditions can also be the employment correction value K based on the two detected Gerustmodule M. for the rolling
- the setting position correction values are also different for the two positions A and B.
- FIG. 3 also shows a reference position R during the kissing process, from which the functional progression according to FIG. 3 or FIG 4 can be determined
- the Kalibnervor- gear in several (here five) different displacement positions is performed and the strain curve stored as a function of the shift position and the further calculation is used as the result of the calibration process with the inclusion of multiple strain curves result in more accurate correction values K of the setting position for the thickness control and for the frame module M as a function of the work roll displacement
- K correction values
- the computer model is adapted, which increases the setting accuracy Calculated from the caliber state to the respective current displacement position and bandwidth during the rolling process
- the thickness control therefore takes these effects into account and thus sets a more exact thickness
- measured load cell weights or the Zyhnderkrafte used as a reference force can be formed for each side and used in Kalib ⁇ ervorgang to record the Dehnkurve or Kalib ⁇ ervorgang
- the work roll bending force is raised from the balancing force to z B the maximum bending force
- the calibration process is thus carried out so that the calibration (also) takes place so that the contact length of the work rolls is reduced to each other, in particular so that the contact length of the work rolls about the support roller length corresponds to the calibration So, for example, so that the work rolls are only driven to an axial displacement value (preferably to the maximum positive displacement position).
- This displacement position during calibra- tion is stored as a reference position.
- a mathematical model then becomes the geometric changes and changes in the load distribution in the roll nip and between the work roll and support roll and the associated strain changes for each current displacement position during the rolling process converted The thickness control compensates for these effects and adjusts the exact thickness
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008063514 | 2008-12-18 | ||
DE102009030792A DE102009030792A1 (de) | 2008-12-18 | 2009-06-27 | Verfahren zum Kalibrieren zweier zusammenwirkender Arbeitswalzen in einem Walzgerüst |
PCT/EP2009/009078 WO2010069575A2 (de) | 2008-12-18 | 2009-12-17 | Verfahren zum kalibrieren zweier zusammenwirkender arbeitswalzen in einem walzgerüst |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2379243A2 true EP2379243A2 (de) | 2011-10-26 |
EP2379243B1 EP2379243B1 (de) | 2014-02-12 |
Family
ID=42194269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09799266.3A Active EP2379243B1 (de) | 2008-12-18 | 2009-12-17 | Verfahren zum kalibrieren zweier zusammenwirkender arbeitswalzen in einem walzgerüst |
Country Status (9)
Country | Link |
---|---|
US (1) | US8939009B2 (de) |
EP (1) | EP2379243B1 (de) |
JP (1) | JP5679985B2 (de) |
KR (1) | KR101299946B1 (de) |
CN (1) | CN102256717B (de) |
DE (1) | DE102009030792A1 (de) |
RU (1) | RU2476280C1 (de) |
UA (1) | UA101541C2 (de) |
WO (1) | WO2010069575A2 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009030792A1 (de) * | 2008-12-18 | 2010-06-24 | Sms Siemag Ag | Verfahren zum Kalibrieren zweier zusammenwirkender Arbeitswalzen in einem Walzgerüst |
CN102266870A (zh) * | 2011-07-14 | 2011-12-07 | 莱芜钢铁集团有限公司 | 热轧宽带钢的精轧机组的启动方法 |
KR101462822B1 (ko) * | 2012-03-02 | 2014-11-20 | 신닛테츠스미킨 카부시키카이샤 | 가이드 롤 및 그 제조 방법 |
EP2711666A1 (de) * | 2012-09-20 | 2014-03-26 | Boegli-Gravures S.A. | Verfahren zur Herstellung eines Satzes von miteinander kooperierenden Prägewalzen und Modellvorrichtung zur Durchführung des Verfahrens |
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 |
EP3159280B1 (de) | 2016-01-14 | 2018-05-16 | Amcor Flexibles Burgdorf GmbH | Wiederverschliessbare verpackung und verfahren zu deren herstellung |
CN205659983U (zh) * | 2016-06-15 | 2016-10-26 | 日照宝华新材料有限公司 | 一种esp生产线用长公里数轧制辊 |
DE102019217966A1 (de) | 2019-11-21 | 2021-05-27 | Sms Group Gmbh | Einstellung einer Auslauftemperatur eines aus einer Walzstraße auslaufenden Metallbands |
CN114700374A (zh) * | 2022-03-25 | 2022-07-05 | 山东国创燃料电池技术创新中心有限公司 | 一种专用辊压机控制方法 |
US20240083133A1 (en) * | 2022-09-14 | 2024-03-14 | Paper Converting Machine Company | Coater and Embosser-Laminator Process Roll Calibration |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS52749B2 (de) | 1973-02-26 | 1977-01-10 | ||
JPS6030508A (ja) | 1983-07-28 | 1985-02-16 | Nippon Steel Corp | 圧延機の圧下設定制御方法 |
JPS6030509A (ja) * | 1983-07-29 | 1985-02-16 | Ishikawajima Harima Heavy Ind Co Ltd | ストリツプの形状制御装置 |
JPS62137116A (ja) | 1985-12-10 | 1987-06-20 | Toshiba Corp | 多段圧延機の板厚制御装置 |
DE3712043C2 (de) | 1987-04-09 | 1995-04-13 | Schloemann Siemag Ag | Walzgerüst mit axial verschiebbaren Walzen |
US5655398A (en) * | 1995-05-11 | 1997-08-12 | Danieli United, A Division Of Danieli Corporation | Roll crossing and shifting system |
DE19530424A1 (de) * | 1995-08-18 | 1997-02-20 | Schloemann Siemag Ag | Verfahren zur Kompensation von aus Horizontalbewegungen der Walzen resultierenden Kräften an Walzgerüsten |
DE69710817T2 (de) | 1996-07-18 | 2002-11-14 | Kawasaki Steel Corp., Kobe | Walzverfahren und Walzwerk für Band zur Reduzierung der Kantenanschärfung |
DE19719318C2 (de) | 1997-05-08 | 2003-06-12 | Sms Demag Ag | Verfahren zur Beeinflussung der Bandkontur im Kantenbereich eines Walzenbandes |
EP1757378B1 (de) * | 1998-02-27 | 2011-09-07 | Nippon Steel Corporation | Kalibrierverfahren für Bandwalzwerk und entsprechende Vorrichtung |
AT410765B (de) * | 2001-09-12 | 2003-07-25 | Voest Alpine Ind Anlagen | Walzgerüst zur herstellung von walzband |
US6769279B1 (en) * | 2002-10-16 | 2004-08-03 | Machine Concepts, Inc. | Multiroll precision leveler with automatic shape control |
RU2258571C2 (ru) * | 2003-10-09 | 2005-08-20 | Открытое акционерное общество "Новолипецкий металлургический комбинат" (ОАО "НЛМК") | Способ оперативного определения параметров упругой деформации листопрокатной клети |
LU91185B1 (en) * | 2005-07-21 | 2007-01-22 | Arcelor Profil Luxembourg S A | Method for automatically zeroizing a universal edger stand |
DE102009021414A1 (de) * | 2008-12-17 | 2010-07-01 | Sms Siemag Aktiengesellschaft | Walzgerüst zum Walzen eines insbesondere metallischen Guts |
DE102009030792A1 (de) * | 2008-12-18 | 2010-06-24 | Sms Siemag Ag | Verfahren zum Kalibrieren zweier zusammenwirkender Arbeitswalzen in einem Walzgerüst |
US8505611B2 (en) * | 2011-06-10 | 2013-08-13 | Castrip, Llc | Twin roll continuous caster |
-
2009
- 2009-06-27 DE DE102009030792A patent/DE102009030792A1/de not_active Withdrawn
- 2009-12-17 KR KR1020117009054A patent/KR101299946B1/ko active IP Right Grant
- 2009-12-17 WO PCT/EP2009/009078 patent/WO2010069575A2/de active Application Filing
- 2009-12-17 CN CN2009801527423A patent/CN102256717B/zh active Active
- 2009-12-17 RU RU2011129595/02A patent/RU2476280C1/ru active
- 2009-12-17 JP JP2011541214A patent/JP5679985B2/ja active Active
- 2009-12-17 US US13/141,034 patent/US8939009B2/en active Active
- 2009-12-17 UA UAA201108870A patent/UA101541C2/ru unknown
- 2009-12-17 EP EP09799266.3A patent/EP2379243B1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2010069575A2 * |
Also Published As
Publication number | Publication date |
---|---|
JP5679985B2 (ja) | 2015-03-04 |
KR20110058897A (ko) | 2011-06-01 |
UA101541C2 (ru) | 2013-04-10 |
RU2476280C1 (ru) | 2013-02-27 |
EP2379243B1 (de) | 2014-02-12 |
DE102009030792A1 (de) | 2010-06-24 |
WO2010069575A3 (de) | 2010-08-19 |
RU2011129595A (ru) | 2013-01-27 |
KR101299946B1 (ko) | 2013-08-26 |
CN102256717A (zh) | 2011-11-23 |
US20110247391A1 (en) | 2011-10-13 |
US8939009B2 (en) | 2015-01-27 |
WO2010069575A2 (de) | 2010-06-24 |
JP2012512030A (ja) | 2012-05-31 |
CN102256717B (zh) | 2013-11-06 |
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