EP2637807A1 - Walzstrasse zum walzen eines metallbandes - Google Patents
Walzstrasse zum walzen eines metallbandesInfo
- Publication number
- EP2637807A1 EP2637807A1 EP12701909.9A EP12701909A EP2637807A1 EP 2637807 A1 EP2637807 A1 EP 2637807A1 EP 12701909 A EP12701909 A EP 12701909A EP 2637807 A1 EP2637807 A1 EP 2637807A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolling
- metal strip
- rolling mill
- roll
- speed
- 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
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
-
- 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
- B21B2037/002—Mass flow control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2275/00—Mill drive parameters
- B21B2275/02—Speed
- B21B2275/04—Roll speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2275/00—Mill drive parameters
- B21B2275/02—Speed
- B21B2275/06—Product speed
-
- 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
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
-
- 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
- B21B37/48—Tension control; Compression control
- B21B37/50—Tension control; Compression control by looper 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
Definitions
- Rolling train for rolling a metal strip The present invention relates to a rolling mill for Wal ⁇ zen a metal strip,
- the rolling mill roll stand comprises a front and a back ⁇ teres rolling mill in which the metal strip one after the other ⁇ is rolled
- the rolling train has a ski jacks, which is arranged between the rolling stands and is attached to the metal ⁇ band, so that a rotatably mounted
- a cold rolling mill for a metal strip is known, in which between the first and the two ⁇ th rolling stand of the cold rolling mill, a measuring roller is employed to the metal band ⁇ .
- the speed of the measuring roller is detected.
- the belt speed of the metal strip is used as part of a mass flow control of the first rolling stand.
- the object of the present invention is to provide a
- the flexible shaft may be formed, for example, as a flexible shaft or as an articulated shaft.
- the speed measuring device is mounted gimbal as such and is slidably mounted in the direction of the looper roll to or from her.
- the articulated shaft is formed as a telescopic shaft.
- the speed measuring device should have a sufficient distance from the looper roll. The distance is preferably at least one meter, in particular min ⁇ least two meters.
- the rolling stands are connected on a drive side of the rolling mill with rolling mill drives. Preferably, the speed measuring device is arranged on the drive side.
- the rolling train is designed as a cold rolling mill.
- the rolling train is formed as a Fer ⁇ tig possibilities for hot rolling of the metal strip.
- 1 shows schematically a rolling train from the side
- 2 shows schematically a section of the rolling train of
- FIG. 3 shows a connection of a looper roller and a speed measuring device and 4 and 5 possible cross-sections of a shaft.
- FIG 1 comprises a rolling train for rolling a metal strip 1 ⁇ - particularly a steel strip 1 - several Walzge ⁇ equip 2.
- the roll stands 2 are disadvantages of the metal strip 1 through today.
- the metal strip 1 is rolled successively. Due to the rolling in the rolling stands 2, the thickness d of the metal strip 1 decreases, of course, during each rolling process. Dementspre ⁇ accordingly increases a belt speed v in each rolling process. However, only the amount of belt speed v changes. The direction of the belt speed v is always maintained. So there is no reversing rolling.
- Shown in FIG. 1 is a three-stand rolling train. This embodiment is theoretically possible, but not common. As a rule, the rolling train has six or seven rolling stands 2. In principle, the number of rolling stands 2 is arbitrary, as long as at least two rolling stands 2 are available.
- the last mill stand 2 is followed by a cooling section 3.
- the cooling section 3 is arranged downstream of a reel assembly 4. Due to the fact that the cooling section 3 is present, hot rolling of the metal strip 1 takes place in the rolling train.
- the rolling train is therefore designed as a finishing train.
- loop lifter 5 are arranged as shown in FIG.
- the loop lifters 5 serve, in particular, to set a desired strip tension ⁇ between the rolling stands 2 and, in the event of disturbances of the strip thickness d and / or the strip speed v, a strip supply for removal. equal to these disorders.
- the ski jacks 5 have a looper roll 6, which is freely rotatably mounted in egg ⁇ nem or two pivotable arms.
- the looper rollers 6 are employed in the operation of the mill train to the metal strip 1. This contacted the
- Loop lifting roller 6 of the respective loop lifter 5 the metal strip 1.
- a lifting height of the loop lifter 5 is so ⁇ a set that between the adjacent rolling stands 2, a predetermined amount of the metal strip 1 is buffered.
- the loop heights are kept constant if possible.
- the looper rollers 6 are, as already mentioned, rotatably mounted, but usually not driven itself.
- the looper rollers 6 are rotated by the metal band 1 in rotation.
- the un ⁇ indirectly upstream roll stand 2 a front roll stand according to the present invention, directly downstream of the roll stand 2 is a rear roll stand according to the present invention.
- Ski jacks 5 is arranged downstream.
- FIG 2 shows a section of the rolling mill of FIG 1. in particular ⁇ sondere
- Figure 2 shows two rolling stands 2, including the arranged between the roll stands 2 sling lifter 5.
- FIG 2 therefore shows a front roll stand 2, a rear roll stand 2 and between these two roll stands 2 arranged ski jacks 5.
- the two rolling stands 2 are provided below with the reference numerals 2 'and 2 "to distinguish the front roll stand 2' and the rear roll stand 2" of ⁇ each other. A further significance is not the new reference numerals.
- 3 shows the looper pulley 6 of the loop lifter 5 of FIG. 2, an associated speed measuring device 7 and its connection. As shown in FIGS. 2 and 3, the looper roller 6 is connected to the speed measuring device 7 via a flexible shaft 8.
- a rotational speed n of the loop lifter roller 6 is detected.
- the detected rotational speed n is fed to a control device 9 of the rolling train.
- the control device 9 evaluates the rotational speed n of the loop lifter roller 6.
- the control device 9 can take into account the speed n of the loop lifter roller 6 in determining control variables S, S ', S "for the loop lifter 5, the front rolling stand 2' and / or the rear rolling stand 2".
- the shaft 8 may be formed as a flexible shaft - similar to the speedometer cable of a motor vehicle. According to the exporting ⁇ approximately example it is designed as articulated shaft.
- the - articulated - shaft 8 has - see in particular FIG 3 - two stub shafts 10, 11, between which a central portion 12 of the shaft 8 is arranged.
- the stub shaft 10 is connected to the loop lifter roller 6, the stub shaft 11 with the speed measuring device 7.
- the middle piece 12 is connected to the stub shafts 10, 11 via a respective universal joint 13, 14. Universal joints - often referred to as universal joints and in English ⁇ as a universal joint - are known to all experts ⁇ common.
- the shaft 8 is due to their design, so the stub shaft 10, 11, the middle piece 12 and the universal joints 13, 14, formed as an articulated shaft 8.
- the shaft 8 is preferably formed as a telescopic shaft.
- the telescoping can for example be realized in that the middle piece 12 has two parts 15, 16, although they are axially displaceable against each other, but are rotatably connected to each other.
- the two parts 15, 16 of the central ⁇ piece 12 can for this purpose according to the 4 and 5 have an inner contour 17 and an outer contour 18, the are out of round, but are coordinated.
- the selected in FIGS 4 and 5 configurations, such as square Kontu ⁇ ren 17, 18 are merely exemplary. Other contours are possible, such as hexagons, triangles, ellipses, etc.
- the rolling stands 2 are connected according to FIG 2 on a drive side (English: drive side) with rolling mill drives 19.
- the speed measuring device 7 is arranged on the drive side.
- a distance a of the rotational speed measuring device 7 from the sleeper roll 6 should be generously dimensioned.
- the distance a should be two meters or more, if possible.
- a minimum distance of one meter should not be undercut.
- the distance a is measured from the end face of the bearing pin of the looper roll 6 to the end face of the rotatable part of the speed measuring device 7.
- the distance a also corresponds to the distance of the stub shaft 10, 11 from each other. Due to the (sufficiently large) distance a, it is particularly possible to arrange the speed ⁇ measuring device 7 in a housing by means of which the speed measuring device 7 is protected against heat, water, steam, oil and mechanical damage.
- the loop lifter 5 Due to the fact that is available by means of the Drehieremesseinrich ⁇ tung 7, the speed n of the loop lifter roller 6 in real time, many advantageous applications are mög ⁇ Lich.
- the loop lifter 5 is supported by the controller 9 after grabbing of the tape head through the rear roll stand 2 "driven such that it is made with a Sollanstellkraft to the metal strip 1.
- the control device 9 determines the control variables S, S ', S "for the rolling train often in dependence on whether the looper roll 6, the metal strip 1 contacted or Not. In this case, it is possible, in particular, for the control device 9 to detect the contacting of the metal strip 1 by the loop lifter roller 6 on the basis of a change in the rotational speed n of the loop lifter roller 6.
- the controller 9 can easily determine the belt speed v of the metal belt 1 from the speed n of the looper roller 6 in conjunction with the diameter thereof. Furthermore, the control device 9 can determine, based on a rotational speed n 'of rollers 20' of the front rolling stand 2 'in conjunction with its diameter, a front roller peripheral speed vU'. On the basis of the front Wal ⁇ zenrises Anlagen vU 'and the tape speed, the control device 9 can dynamically an overfeed of from the front roll stand 2 v' outgoing metal strip 1 ermit ⁇ stuffs. In this case, the control device 9 can determine, for example, the control variables S 'for the front rolling stand 2' - in particular its nominal setting - taking into account the determined overfeed.
- the corresponding compensatesgeschwindig ⁇ ness vU "and the lag of the roll stand 2 in the rear" incoming metal strip 1 can be determined for the rear roll stand 2 "based on the rotational speed n".
- the control device 9 the control variables S "for the rear roll stand 2" - in particular determine its nominal position - taking into account the determined lag.
- Insbeson ⁇ particular 9 can perform the control device the corresponding Determined ⁇ averaging in real time. It is possible that the control device 9 directly uses the ascertained advances and retardations. Alternatively, it is possible for the control device 9, by means of a model not taking into account the rotational speed n of the loop lifter roller 6, to have a model-supported lead-in from the front
- the controller 9 may adapt the model on the basis of v by using the speed of the looper 6 n role determined tape speed. In an analogous manner, it is possible to proceed with regard to the lag of the metal strip 1 entering the rear roll stand 2 ".
- the controller 9 contacted by means of a contact force with which the looper roller 6 tallband the metal 1, a specific strip tension ⁇ ermit ⁇ telt.
- the control device 9 can determine the derivative of the lead after the specific strip tension ⁇ on the basis of changes in the specific strip tension ⁇ and the lead of the metal strip 1 expiring from the front roll stand 2 'and the determined derivation within the scope of determining the control quantities S' for consider the front roll stand 2 'be ⁇ .
- the control device 9 can determine the time derivative of the specific strip tension ⁇ and the time derivative of the overfeed and determine the derivative of the lead over after the specific strip tension ⁇ by quotient formation.
- the control device 9 based on the rotational speed of the looper roll 6 n in conjunction with the diameter of the Determine belt speed v and the he ⁇ average belt speed v in the course of a tracking of sections of the metal strip 1 from the front to the rear rolling stand 2 ', 2 "evaluate.
- Monitoring trip for example, can be used to carry out a pilot control of the hinte ⁇ re rolling mill 2 "at the right time, examples For example, because a thickness error in the front roll stand 2 'could not be completely corrected and theThebe ⁇ liable section of the metal strip 1 now enters the rear rolling ⁇ scaffold 2 "enters.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12701909.9A EP2637807B1 (de) | 2011-02-14 | 2012-02-02 | Walzstrasse zum walzen eines metallbandes |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP11154355A EP2486990A1 (de) | 2011-02-14 | 2011-02-14 | Walzstraße zum Walzen eines Metallbandes |
| PCT/EP2012/051731 WO2012110322A1 (de) | 2011-02-14 | 2012-02-02 | Walzstrasse zum walzen eines metallbandes |
| EP12701909.9A EP2637807B1 (de) | 2011-02-14 | 2012-02-02 | Walzstrasse zum walzen eines metallbandes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2637807A1 true EP2637807A1 (de) | 2013-09-18 |
| EP2637807B1 EP2637807B1 (de) | 2014-12-31 |
Family
ID=44350624
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11154355A Withdrawn EP2486990A1 (de) | 2011-02-14 | 2011-02-14 | Walzstraße zum Walzen eines Metallbandes |
| EP12701909.9A Not-in-force EP2637807B1 (de) | 2011-02-14 | 2012-02-02 | Walzstrasse zum walzen eines metallbandes |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11154355A Withdrawn EP2486990A1 (de) | 2011-02-14 | 2011-02-14 | Walzstraße zum Walzen eines Metallbandes |
Country Status (3)
| Country | Link |
|---|---|
| EP (2) | EP2486990A1 (de) |
| CN (1) | CN103370148B (de) |
| WO (1) | WO2012110322A1 (de) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57127517A (en) * | 1981-02-02 | 1982-08-07 | Hitachi Ltd | Tension controller for rolling mill |
| JPH04237506A (ja) * | 1991-01-18 | 1992-08-26 | Nippon Steel Corp | 熱間圧延制御方法及び装置 |
| JP2000312909A (ja) * | 1999-04-27 | 2000-11-14 | Toshiba Corp | 板幅制御装置 |
| DE19953524A1 (de) * | 1999-11-05 | 2001-05-10 | Sms Demag Ag | Schlingenheber |
| AT500765B1 (de) * | 2002-09-04 | 2009-03-15 | Voest Alpine Ind Anlagen | Verfahren zur reduzierung der bandbreitenänderung |
| CN2576364Y (zh) * | 2002-09-19 | 2003-10-01 | 中国第二重型机械集团公司 | 分节辊活套 |
| DE102008007057A1 (de) | 2008-01-31 | 2009-08-13 | Siemens Aktiengesellschaft | Regelverfahren für eine Kaltwalzstraße mit vollständiger Massenflussregelung |
| CN201382832Y (zh) * | 2009-03-16 | 2010-01-13 | 重庆和平自动化工程有限公司 | 柔性连接的动力机转矩检测装置 |
| CN201569661U (zh) * | 2009-12-18 | 2010-09-01 | 河南丰博自动化有限公司 | 一种测速装置和一种测速机构 |
-
2011
- 2011-02-14 EP EP11154355A patent/EP2486990A1/de not_active Withdrawn
-
2012
- 2012-02-02 CN CN201280007718.2A patent/CN103370148B/zh not_active Expired - Fee Related
- 2012-02-02 EP EP12701909.9A patent/EP2637807B1/de not_active Not-in-force
- 2012-02-02 WO PCT/EP2012/051731 patent/WO2012110322A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2012110322A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012110322A1 (de) | 2012-08-23 |
| CN103370148A (zh) | 2013-10-23 |
| CN103370148B (zh) | 2015-07-01 |
| EP2637807B1 (de) | 2014-12-31 |
| EP2486990A1 (de) | 2012-08-15 |
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