EP3194087A1 - Breiteneinstellung bei einer fertigstrasse - Google Patents
Breiteneinstellung bei einer fertigstrasseInfo
- Publication number
- EP3194087A1 EP3194087A1 EP15756619.1A EP15756619A EP3194087A1 EP 3194087 A1 EP3194087 A1 EP 3194087A1 EP 15756619 A EP15756619 A EP 15756619A EP 3194087 A1 EP3194087 A1 EP 3194087A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolling
- metal strip
- width
- actual
- stand
- 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 abstract description 186
- 229910052751 metal Inorganic materials 0.000 claims abstract description 145
- 239000002184 metal Substances 0.000 claims abstract description 145
- 238000003079 width control Methods 0.000 claims description 47
- 238000000034 method Methods 0.000 claims description 37
- 238000001914 filtration Methods 0.000 claims description 35
- 239000000463 material Substances 0.000 claims description 12
- 238000004590 computer program Methods 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 3
- 230000010363 phase shift Effects 0.000 claims description 2
- 101100495769 Caenorhabditis elegans che-1 gene Proteins 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 claims 1
- 230000006870 function Effects 0.000 description 44
- 238000005259 measurement Methods 0.000 description 9
- 238000013459 approach Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 7
- 238000011144 upstream manufacturing Methods 0.000 description 7
- 238000012937 correction Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000013178 mathematical model Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- LFYJSSARVMHQJB-QIXNEVBVSA-N bakuchiol Chemical compound CC(C)=CCC[C@@](C)(C=C)\C=C\C1=CC=C(O)C=C1 LFYJSSARVMHQJB-QIXNEVBVSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
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- 230000001276 controlling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- 238000013000 roll bending Methods 0.000 description 1
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Classifications
-
- 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
- B21B37/22—Lateral spread control; Width control, e.g. by edge rolling
-
- 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
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/006—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring temperature
-
- 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
- B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/06—Width
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/02—Tension
- B21B2265/06—Interstand tension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2273/00—Path parameters
- B21B2273/20—Track of 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
- B21B37/48—Tension control; Compression control
Definitions
- Width adjustment in a finishing train The present invention is based on a method for rolling a metal strip in a finishing train.
- finishing train comprises a plurality of the metal strip to each other ⁇ traversed roll stands
- each of the actual width and the actual ⁇ temperature is detected for sections of the metal strip before entering the finishing mill.
- the present invention further relates to a Compu ⁇ terprogramm comprising machine code that is processable by a controller for a finishing train, wherein the execution of the machine code effected by the control means that the control means operates the finishing train according to such a method.
- the present invention further is directed to a STEU ⁇ er worn for a finishing train, wherein said control means is programmed with such a computer program, so that the control means operates the finishing train according to such a method.
- the present invention is further based on a finishing train for rolling a metal strip
- finishing train comprises a plurality of the metal strip to each other ⁇ traversed roll stands
- the finishing train having such a control device which operates the finishing train according to such a method.
- a hot rolling mill for rolling metal strip is generally from a roughing train, a finishing train and a hat ⁇ pel Rhein.
- the metal strip first passes through the pre ⁇ road and then the finishing mill and the coiler is finally fed.
- - usually at least in hot strip mills for rolling steel strip - is still a cooling line available.
- the cooling section if it is present, downstream of the finishing train and upstream of the reel device.
- the width of the metal strip is influenced both in the roughing mill and in the finishing mill as well as on the way to the coiler. In some cases, this influence is active.
- Hot rolled strip Boran of SSAB Tunnplat "by Harald Natusch et al., Stahl and Eisen 122 (2002), number 11, pages 93 to 100, it is known to carry out a pre-control for the width deviations.
- a measurement of the width takes place in front of and behind the roughing road and behind the finishing train.
- Y. Hoshi et al. La Revue de Metallurgie-CIT, November 1996, pages 1413 to 1420, is known from the paper "Automatic width control system using interstand tension in hot strip finishing mill” behind the second and rear respectively to detect the width of the metal strip the last roll stand of a finishing mill.
- Mes ⁇ solution of the train between the first and the second rolling stand is controlled.
- the trains between the third and the last roll stand to be controlled.
- From DE 103 38 470 B4 is known to detect a characteristic of the mass flow size between each two roll stands ⁇ and based on the detected size adjust to reduce a width change of the tape tension between the two roll stands.
- EP 0 375 095 B1 discloses a method for regulating the strip width during finish rolling of hot strip in a multi-stand rolling train.
- the bandwidth is measured before the penultimate and after the last frame.
- the strip tension is used in front of the last mill stand of the rolling train.
- ba ⁇ -stabilizing width model is a simplified model ⁇ width passes meet.
- the simplified width model is supplemented with a neuro-dimensional network, it models the widening in the.
- Finishing line as a function of the shrinkage in the metal strip, the current width, the thickness reduction, the pressed length and the deformation resistance.
- the methods of the prior art already cause the actual width of the metal strip to approach the desired width. Often, however, the procedures are inadequate.
- the temperature distribution over the length of the metal strip is uneven, which in turn results in uneven spreading of the metal strip in the finishing train.
- the object of the present invention is to provide possibilities by means of which the width of the metal strip can be adjusted precisely in a simple and efficient manner.
- a method for rolling a metal strip in a finishing train which has a plurality of rolling stands, which are consecutively traversed by the metal strip.
- sections of the metal strip are each assigned an actual width derived from the detected actual width, an initial nominal width, an actual temperature derived from the detected actual temperature, and a setpoint temperature,
- a desired in the metal strip before the assigned rolling mill ⁇ desired train, one in the metal ⁇ band after the assigned mill desired Sollzuges, the respective section associated set temperature and parameters of the assigned Rolling stand rolling process determines a desired width after rolling in the associated rolling stand and assigns the respective section of the metal strip
- Rolling an actual width after rolling in zugeord ⁇ Neten roll stand determined and assigns the respective section of the metal strip, -
- the respective width control device based on the desired in the metal strip after the associated rolling train Sollzuges, the target temperature and the actual temperature of rolled in the associated rolling mill section of the Metallban-, the difference between the desired width and actual width of Ab ⁇ section of the metal strip, which is at a predetermined Position behind the assigned rolling stand, and the parameter of the rolling process determines the rear additional setpoint,
- the respective width control device determines the additional rear setpoint value in such a way that the actual width of the section of the metal strip rolled in the associated rolling stand approaches the set width of the rolled section
- the respective width control device feeds the rear auxiliary setpoint to a respective tension regulator, which adjusts a prevailing in the metal strip behind the associated rolling stand actual train according to the corrected to the rear additional setpoint Sollzug.
- the actual widths and actual temperatures assigned to the sections are identical to the detected actual widths and actual temperatures.
- at least the detected actual widths, preferably also the detected actual temperatures are however filtered, in particular low-pass filtered.
- the filtering can in particular be such that no phase offset is induced by the filtering in the filtered variable (actual width or actual temperature) compared to the unfiltered variable. So it should be done filtering in Nullpha ⁇ senfiltern. For this purpose, it is possible, for example, to provide a correspondingly symmetrical filter. Alternatively, it is possible that the detected actual widths of a first
- Filtering be subjected to provisionally filtered Ist ⁇ widths are determined and then subjected to the preliminary filtered actual widths of a second filtering and so the filtered actual widths are determined.
- formerly ovin- the Istbreiten detected NEN parallel to both the first filtering and the second filtering are subjected to and are used as the average of the two filtered actualbreadth Filterun ⁇ gen.
- the two filters can be phase-locked. It is only necessary that the two filters are inversely phase-locked relative to one another, so that the phase offset caused by one filtering is compensated or compensated by the other filtering. Analogous procedures are possibly possible with respect to the actual temperatures.
- the initial target width is specified.
- the initial target width can be determined based on the actual width assigned to the sections. It is possible that the predetermined position is fixed. Alternatively, it is possible that the predetermined location is given to the width controllers (optionally individually for each width controller). For example, for the respective width control device as a predetermined point, the middle between the assigned width controllers.
- Rolling mill and the immediately downstream rolling stand can be specified. It may also be possible to certain place to specify the location at which a ski lift on the metal band attacks.
- the Wegverfol ⁇ supply can be gestar ⁇ tet basis of this time to be adjusted, ie particularly timely.
- Making the low-pass filters simultaneously with the detection of the actual width and the actual temperature is particularly useful if the actual width and the actual temperature are detected at the inlet of the finishing train.
- the number of rolling stands of the finishing train can be determined as needed. In general, the number of Walzgerüs ⁇ th 3 to 8, usually 4 to 7, in particular 5 or 6.
- the metal in particular steel, aluminum and copper in question.
- the metal strip is made of a different metal. In the context of the present invention it is necessary at various points to know the speed of the metal strip. For this, it is possible to make a corresponding Ge ⁇ schwindtechnikslitis directly.
- a final rolling temperature is predetermined, which should have the metal strip at the outlet of the finishing train.
- the final rolling temperature is preferably used as the target temperature.
- the actual temperature of the portions of the metal strip is preferably tracked during the passage of the portions of the metal strip through the Fer ⁇ tig Avenue continuously model-based.
- the parameters of the rolling process can be determined as needed. As a rule, as parameters of the rolling process, be ⁇ attracted to the associated rolling stand, the rolling force, the rolling torque, the belt speed on the inlet side and / or outlet side of the associated rolling stand, the nip, the stitch loss, the depressed length of metal strip and mate- rial ridn of Used metal strip.
- the object is further achieved by a computer program having the features of claim 11. According to the invention is pre- ⁇ see that the execution of the machine code effected by the control means that the control means operates the finishing train according to an inventive method.
- the object is further achieved by a control device for a finishing train having the features of claim 12.
- the finishing mill is programmed with a erfindungsge ⁇ MAESSEN computer program, so that the control means operates the finishing train according to an inventive method.
- the control device is the finishing train such that it operates the finishing train according to a method according to the invention .
- FIG. 2 shows sections of a metal strip
- FIG. 3 shows a flow chart
- the roughing 2 can in individual cases - for example, in the case that the metal strip 1 is already cast relatively thin - omitted.
- the finishing mill 3 has, according to FIG 1 a plurality of rolling stands 5 which are traversed by the Me ⁇ tallband 1 successively.
- the number of rolling stands 5 is usually between three and eight, in particular between four and seven, for example at five or six.
- the metal strip 1 may be ⁇ example, be a steel strip to act an aluminum tape to a copper ⁇ tape or a tape of a different metal.
- the hot strip mill - in particular the finishing train 3 - is controlled by a control device 6.
- the control device 6 is programmed with a computer program 7.
- the computer program 7 comprises machine code 8, which is dependent on the control er arthritis 6 can be processed.
- the processing of the machine code 8 by the control device 6 causes the control device 6, the finishing mill 3 operates according to a method which will be explained in more detail below in conjunction with FIG 2 and the other figures. Due to the programming with the computer program 7, the control device 6 thus operates the finishing train 3 accordingly.
- the metal strip 1 is virtually divided into sections 9 within the control device 6.
- the sections 9 can be defined, for example, according to FIG. 2 by a uniform length 1, by a uniform mass m or by a detection in steps equidistant from one another.
- each of which actualbreadth bO and their Isttempe ⁇ temperature TO is detected in a step Sl for the portions of the metal strip 9 first Detecting the actualbreadth bO and the actual temperature TO ⁇ takes place prior to entry of the corresponding portions 9 into the finishing train 3.
- 1 2 corresponding Messein ⁇ devices be located at the outlet of the roughing train ACCORDING TO FIG.
- the measuring devices can be arranged at the inlet of the finishing train 3.
- the detection of the actual widths bO and the actual temperatures TO for all sections 9 is completed even before the foremost section 9 of the metal strip 1 enters the finishing train 3.
- the detection of the actual widths bO and the actual temperatures TO for rear portions 9 of the metal strip 1 is still carried out while front portions 9 of the metal strip 1 have already run into the finishing train 3.
- the detection is made per ⁇ but such that the following SUC ⁇ constricting in a step S2 assigning a actualbreadth b and an actual temperature T for each section is finished 9 before the corresponding section 9 in the finishing mill 3 enters.
- the sections 9 in step S2 immediately the detected actual widths bO and actual temperatures Assigned to TO.
- the detected actual widths b Preferably, however, at least the detected actual widths b 0, preferably also the detected actual temperatures TO, are filtered.
- a low-pass filtering can be done entspre ⁇ accordingly. In case of filtering will be in
- Step S2 for each section 9 a respective filtered actual width bF and a respective filtered actual temperature TF determined.
- the filtering of step S2 preferably takes place in such a way that the filtered actual widths bF have no phase offset compared to the original, unfiltered actual widths b0 (zero-phase filtering).
- a filtering can take place with a Gaussian bell curve (or another symmetrical bell curve).
- one of the following two approaches is taken.
- the detected actual widths b0 it is possible, as shown in FIG. 5, for the detected actual widths b0 to be first subjected to a first filtering in a first filter block 10. As a result, provisionally filtered actual widths bV are determined. The provisionally filtered actual widths bV are then subjected to a second filtration in a subsequent second filter block 11. The result of the second filtering are the filtered actual widths bF.
- both the first filtering in the first filter block 10 and the second filtering in the second filter block 11 may be phase-locked. Decisive in this case, the two filters in the two filter blocks 10, 11 are inversely phase relative to each other.
- the second filtering in the second filter ⁇ block 11 thus compensates for the phase shift, which was caused by the first filtering in the first filter block 10th Alternatively, it is 6 mög ⁇ Lich as shown in FIG, the two filterings in the two filter blocks 10, 11 perform parallel. In this case, so the detected actual widths bO both the first filtering and subjected to the second filtering.
- the results of the two filters are in this case fed to a node in which the mean value of the two filters is formed.
- the mean value corresponds in this case to the filtered actual width bF.
- the same type of filtering is used for determining the filtered actual temperatures TF as for the determination of the filtered actual widths bF. However, this is not necessary.
- a zero-phase filtering should also take place with respect to the actual temperatures TO.
- the filtered actual width bF determined for the respective section 9 of the metal strip 1 and the filtered actual temperature TF determined for the respective section 9 of the metal strip 1 are therefore the respective section 9 as (new) actual width b or (new) actual temperature T assigned.
- the respective section 9 in a step S3 as a target width b * an initial Sollbrei ⁇ te bO * and assigned as target temperature T * an initial AIDmpe ⁇ temperature TO *.
- the initial nominal width bO * the STEU ⁇ er immunity is set 6 from the outside, the parent, for example from an (not shown) controller or 12 by an operator
- the control means 6, the initial target width bO * based determined the sections 9 associated actual width b.
- control device 6 can perform an average value formation over all sections 9 of the metal strip 1.
- control device 6 is also given a final rolling temperature, ie the temperature which is to have the metal strip 1 as it emerges from the finishing train 3 on ⁇ . It is possible that this temperature is used as the initial set temperature TO * or the initial Target temperature TO * is determined on the basis of the final rolling temperature.
- the control device 6 is implemented due to the Abarbei- processing of the computer program 7, in a step S4, a Wegver ⁇ innovation for the portions 9 of the metal strip 1.
- the control ⁇ device 6 is therefore known at any time, which portion 9 of the metal strip 1, at which point the finishing train 3 is located.
- the implementation of tracking is well known to those skilled in the art and therefore need not be discussed.
- the time tl can be detected by, for example, that the roll ⁇ virtue of this roll stand 5 rises suddenly.
- the other rolling stands 5 of the finished road ⁇ 3 corresponding time points t2, t3 and so on. Based on the detected times tl, t2, etc., the tracking can be adjusted in this case.
- the control device 6 implemented due to the Abarbei ⁇ tion of the computer program 7 further in a step S5, at least for the rolling stands 5 with the exception of the last mill stand 5 of the finishing train 3 each have a width control ⁇ device 13.
- the respective width control device 13 is associated with the respective rolling stand 5. It is possible that even for the last roll stand 5 of the finishing train 3, a ⁇ such width control device 13 is present. However, this is not mandatory.
- the construction and mode of operation of one of the width control devices 13 will be explained in conjunction with FIG. 7 -representative of all the width control devices 13. For the other width control devices 13 apply analogous versions.
- the width control device 13 is assigned to a specific roll stand 5.
- this is the average rolling stand 5, hereinafter referred to as a mapped referred Walzge ⁇ Jost and designated by the reference numeral 5b.
- the rolling stand 5, which is arranged upstream of the associated rolling stand 5b, is provided below with the reference sign 5a.
- the rolling stand 5b arranged downstream of the associated rolling stand 5b is subsequently provided with the reference numeral 5c.
- the width control device 13 has at leastjansblö ⁇ blocks 14 to 19.
- the following parameters are supplied to the functional block 14:
- the nominal width b * which is assigned to the section 9 of the metal strip 1 currently rolled in the assigned rolling stand 5b, before rolling in the associated rolling stand 5b.
- the setpoint width b * corresponds to the initial setpoint width b *.
- the desired width b * is provided by the function block 15 of the width control device 13 assigned to the upstream roll stand 5 a.
- Roll stand 5b should prevail.
- the desired train ZI * is determined by ei ⁇ ne appropriate default by the parent controller.
- additional control intervention of the operator 12 can be taken into account.
- the desired train Z2 * is determined by a corresponding specification from the higher-level control device.
- control operator intervention may optionally be considered 12 to ⁇ additionally.
- the functional block 14 determines a nominal width after rolling in the associated rolling stand 5b.
- the function block 14 assigns the corresponding portion 9 of the metal strip 1, the determined nominal width as a new desired width b *.
- the new setpoint width b *, the function block 14 to the function block 15.
- the function block 14 thus internally models based on the desired values b *, T * of the respective section 9 of the Metallban ⁇ 1 of its Breitungs in the nip of the associated rolling mill 5b.
- the function block 14 thus includes an internally based on mathematical-physical equations - in particular algebraic and differential equations - based Mo ⁇ dell the associated rolling stand 5b.
- the function block 15 is formed in the simplest case as a simple buffer memory in the manner of a shift register or derglei ⁇ chen, in which only the transport of the Ab ⁇ sections 9 of the metal strip 1 (including the Ab ⁇ cut 9 assigned set sizes b *, T *) to the subsequent roll stand 5c is modeled.
- the desired block Z2 * and the material characteristics M of the metal strip 1 are fed to the functional block 15 of the desired strip Z2 * desired in the metal strip 1 for the associated rolling stand 5b.
- the function block 15 thus leads to the buffered portions 9, the respective nominal width b * after rolling in the associated roll stand 5b as a function of the desired tension Z2 * desired in the metal strip 1 for the associated rolling stand 5b, the setpoint temperature T * and the material characteristics M of the metal strip 1.
- Implicit in the determination of the functional block 15 continue the distance a to the downstream rolling stand 5c (more precisely: the distance a plus the stored between the associated rolling stand 5b and the downstream roll stand 5c tape supply) and the belt speed v behind the associated rolling mill 5b.
- a, v determine the transport time for which the sections 9 of the metal strip 1 are located in the intermediate frame area between the associated rolling stand 5b and the downstream rolling stand 5c.
- the function block 15 provides the time of rolling a respective portion 9 of the metal strip 1 in the downstream roll stand 5c, the nominal width b * prior to rolling in the downstream roll stand 5c of the downstream rolling stand 5c supplied arrange ⁇ th width control device 13 are available.
- the distance a is a fixed quantity that only needs to be parameterized once.
- the stored tape supply can be determined in a simple manner by the position of a loop lifter 20 which is arranged between the associated rolling stand 5b and the downstream roll stand 5c.
- the Bandgeschwindig ⁇ velocity v can vary during operation. It is possible, the Bandge ⁇ speed v by means of a corresponding measuring device to measure directly. Alternatively, the circumferential speed of rolls of the associated roll stand 5b can be measured and, in conjunction with the known lead, the strip speed v can be determined therefrom. Again alternatively, the peripheral speed of rolls of the downstream roll stand 5 can be measured and from this, in conjunction with the known lag, the belt speed v can be determined. Which approach is taken, located in Belie ⁇ ben the expert.
- the function block 16 is structurally and functionally the same 14 in its approach to the function block There are, however, changed the following input variables: - Instead of the set width b * the actualbreadth b of momen ⁇ tan rolled in the associated rolling mill 5b section 9 of the metal strip 1 used.
- the actual width b corresponds to the actual width b assigned to the sections 9 in step S2 of FIG.
- the actual width b is provided by the function block 17 of the width control device 13 assigned to the upstream roll stand 5 a.
- a reference train corrected by a rear additional target value ⁇ 2 * is used instead of the reference train Z2 *.
- the rear additional setpoint ⁇ 2 * is provided as shown in FIG 7 from the function block 19 of the respective ⁇ width controller. 13 -
- the actual temperature T is used.
- the actual temperature T corresponds to the actual temperature T.sub.im associated with the sections 9 in step S2 of FIG
- the actual temperature T is made available by the width control device 13 assigned to the upstream roll stand 5a.
- the functional block 16 determines an actual width after rolling in the associated rolling stand 5b.
- the function block 16 assigns the corresponding section 9 of the metal strip 1, the determined actual width as a new actual width b.
- the new actual width b leads the function block 16 to the function block 17.
- the function block 16 thus internally models, with reference to the actual values b, T of the respective section 9 of the metal strip 1, its spreading behavior in the roll gap of the associated roll stand 5b.
- Function block 17 is structurally and functionally identical to function block 15.
- functional block 17 - analogous to function block 15 - does not only transport the sections 9 of metal strip 1 (including the actual variables b, T assigned to sections 9) to the downstream one Roll stand 5c, but also that the creep behavior of the actual widths b of the buffered in functional block 15 sections 9 of the metal strip 1, the functional block 17 to the rear additional target value 5Z2 * corrected Soll ⁇ train Z2 * and continue - as well as the function block 15 - the Material characteristics M of the metal strip 1 supplied.
- the functional block 17 thus performs the respective actual width b for the buffered sections 9 after rolling in the associated rolling stand 5b as a function of that around the rear additional setpoint 5Z2 * corrected nominal tension Z2 *, the actual temperature T and the material characteristics M of the metal strip 1 after. Implicit in the determination of the functional block 17 as before at the function block 15 and the distance a to the downstream roll stand 5c and the belt speed v behind the associated rolling mill 5b.
- the function block 18, the newly determined nominal width b * are fed from the function block 14 and the newly determined actual width b from the function block 15.
- the function block 15 bil ⁇ det the difference between the desired width 5b and b * actualbreadth b.
- the function block 18 buffers the difference 5b determined by it.
- the buffering is designed so that the portion 9 of the metal strip 1 to which the differential determined rence is based 5b, to the time at which the Diffe ⁇ rence is output 5b from the function block 18, at a predetermined location between the associated Roll stand 5b and the downstream rolling stand 5c is located.
- the predetermined location may be determined as needed.
- the predetermined location may, for example, be that location at which the ski lift 20 downstream of the associated rolling stand 5b acts on the metal strip 1.
- the predetermined site of the gene jeweili ⁇ width control device 13 can be specified, par- from the operator 12 or from the above-mentioned control unit.
- the function block 18 supplies the difference ⁇ b to the function block 19.
- the function block 19 is further supplied with the desired tension Z2 *, the setpoint temperature T * and the actual temperature T and the parameters P of the rolling process taking place in the respective rolling stand 5.
- the function blocks 19 continue to output the output from the function blocks 14 and 16 widths b *, b as such.
- Based on the supplied guide ⁇ th he sizes of the function block 19 determines the rear additional setpoint 5Z2 *. The determination is made such that the actualbreadth b of the rolled in the associated rolling mill 5b From ⁇ section 9 of the metal strip 1 of desired width b * of the rolled portion is approximated.
- the averaging is performed He ⁇ preferably such that the approximation for the time is optimized to the portion 9, for the rear of the additional setpoint value is determined 5Z2 *, leaking out of the roll stand arranged nachge ⁇ 5c.
- the function block 19 continues to supply the rear auxiliary setpoint 5Z2 * to a tension controller 21.
- the tension regulator 21 will continue to be supplied with the desired tension Z2 * and an actual tension Z2 which prevails behind the associated rolling stand 5b in the metal belt 1.
- the tension controller 21 sets the actual tension Z2, which prevails in the metal band 1 behind the associated rolling stand 5b, in accordance with the reference tension corrected by the rear additional target value 5Z2 * Z2 * one.
- the tension regulator 21 may act on the loop lifter 20 for this purpose as shown in FIG.
- the tension regulator 21 can act on the roller peripheral speed of the associated rolling stand 5b and / or of the downstream rolling stand 5c.
- the tension regulator 21 can act on the employment of the downstream roll stand 5c.
- the present invention thus relates to the following facts:
- the metal strip 1 are respectively detected whose Is ⁇ wide bO and their actual temperature TO for portions 9 before the rolling of a metal strip 1 in a finishing train. 3 From the detected quantities bO, TO derived quantities bF, TF and the Corres ⁇ pondierenden setpoints b *, T * are assigned to the sections 9. The sections 9 of the metal strip 1 are tracked during the passage of the finishing train 3.
- the Walzge ⁇ equip 5 each a width control device 13 is assigned.
- the width control devices 13 determine, based on different input variables, the nominal width b * and the actual width b after rolling in the associated rolling stand 5b.
- the width control devices 13 furthermore determine a rear additional target value 5Z2 *, by which the target tension Z2 * behind the assigned rolling stand 5b is corrected by the
- the present invention has many advantages. For example, in the context of the present invention, no Measurement of temperatures T and widths b required within the finishing train 3. Only in front of the finishing train 3 is such a detection required. These surveys are usually available.
- the width b can be detected at the outlet of the finished road 3 for quality control, for adapting the process models used and possibly for optional width control. However, this is not mandatory. If in addition to the inventive width controller also has a width control is implemented, cor- width control alternates in dependence on the actualbreadth b behind the finishing train 3 and the target width b * at this point at least the desired width b *, possibly also the actual ⁇ broad b. The correction takes place for the individual rolling stands 5, to which a width control device 13 is assigned.
- the correction takes place in such a way that the determined additional target values ⁇ *, ⁇ 2 * compensate the width deviation at the outlet of the finishing train 3.
- the control interventions are divided within the finishing train 3 into several rolling stands 5. In this case, the compensation preferably prevails in the front rolling stands 5. In the rear rolling stands 5, only residual deviations are preferably compensated.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14185055.2A EP2998040A1 (de) | 2014-09-17 | 2014-09-17 | Breiteneinstellung bei einer Fertigstraße |
PCT/EP2015/069501 WO2016041746A1 (de) | 2014-09-17 | 2015-08-26 | Breiteneinstellung bei einer fertigstrasse |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3194087A1 true EP3194087A1 (de) | 2017-07-26 |
EP3194087B1 EP3194087B1 (de) | 2018-10-10 |
Family
ID=51564510
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14185055.2A Withdrawn EP2998040A1 (de) | 2014-09-17 | 2014-09-17 | Breiteneinstellung bei einer Fertigstraße |
EP15756619.1A Active EP3194087B1 (de) | 2014-09-17 | 2015-08-26 | Breiteneinstellung bei einer fertigstrasse |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14185055.2A Withdrawn EP2998040A1 (de) | 2014-09-17 | 2014-09-17 | Breiteneinstellung bei einer Fertigstraße |
Country Status (5)
Country | Link |
---|---|
US (2) | US10596608B2 (de) |
EP (2) | EP2998040A1 (de) |
CN (1) | CN106687229B (de) |
RU (1) | RU2706254C2 (de) |
WO (1) | WO2016041746A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108941208B (zh) * | 2017-05-24 | 2020-01-31 | 宝山钢铁股份有限公司 | 一种板坯的粗轧宽度控制方法 |
EP3854494B1 (de) * | 2020-01-24 | 2022-09-28 | Primetals Technologies Germany GmbH | Frequenzabhängige verteilung von stellgrössen zur veränderung des walzgutquerschnitts in einer walzstrasse |
EP3974073B1 (de) * | 2020-09-28 | 2023-07-19 | Primetals Technologies Germany GmbH | Walzen unter berücksichtigung von frequenzverhalten |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57160508A (en) * | 1981-03-30 | 1982-10-02 | Toshiba Corp | Automatic thickness controller of seamless pipe |
JPS6152917A (ja) * | 1984-08-23 | 1986-03-15 | Kawasaki Steel Corp | タンデム圧延機の板幅制御装置 |
SU1271902A1 (ru) * | 1985-04-23 | 1986-11-23 | Куйбышевский Филиал Всесоюзного Научно-Исследовательского Конструкторско-Технологического Института Подшипниковой Промышленности | Способ управлени термической обработкой издели |
JPS62156010A (ja) * | 1985-12-27 | 1987-07-11 | Kawasaki Steel Corp | 連続圧延機の幅制御方法 |
JPS62289309A (ja) * | 1986-06-06 | 1987-12-16 | Nippon Steel Corp | トラツキング装置 |
EP0375095B1 (de) | 1988-12-22 | 1996-01-31 | Preussag Stahl Aktiengesellschaft | Verfahren und Vorrichtung zum Regeln der Bandbreite beim Warmbandwalzen |
JPH0484612A (ja) * | 1990-07-27 | 1992-03-17 | Kobe Steel Ltd | 圧延材の板幅制御方法 |
JPH04100620A (ja) * | 1990-08-16 | 1992-04-02 | Sumitomo Metal Ind Ltd | 熱間連続圧延における板巾制御法 |
DE19851053A1 (de) | 1998-11-05 | 2000-05-18 | Siemens Ag | Verfahren und Einrichtung zum Regeln der Breite eines Metallbandes |
AT500765B1 (de) | 2002-09-04 | 2009-03-15 | Voest Alpine Ind Anlagen | Verfahren zur reduzierung der bandbreitenänderung |
DE10256750A1 (de) * | 2002-12-05 | 2004-06-17 | Sms Demag Ag | Verfahren zur Prozesssteuerung oder Prozessregelung einer Anlage zur Umformung, Kühlung und/oder Wärmebehandlung von Metall |
DE10346274A1 (de) * | 2003-10-06 | 2005-04-28 | Siemens Ag | Verfahren und Steuervorrichtung zum Betrieb einer Walzstraße für Metallband |
DE102007035283A1 (de) * | 2007-07-27 | 2009-01-29 | Siemens Ag | Verfahren zur Einstellung eines Zustands eines Walzguts, insbesondere eines Vorbands |
DE102007050891A1 (de) * | 2007-10-24 | 2009-04-30 | Siemens Ag | Auf der Streuung einer Istgröße eines Walzguts basierende Adaptierung eines Reglers in einem Walzwerk |
AT509831B1 (de) | 2010-04-30 | 2012-03-15 | Siemens Vai Metals Tech Gmbh | Verfahren und vorrichtung zur minimierung des bandzugs eines walzgutes |
EP2689863A1 (de) * | 2012-07-27 | 2014-01-29 | Siemens Aktiengesellschaft | Verfahren zur gezielten Beeinflussung der Geometrie eines Walzguts |
-
2014
- 2014-09-17 EP EP14185055.2A patent/EP2998040A1/de not_active Withdrawn
-
2015
- 2015-08-26 RU RU2017103303A patent/RU2706254C2/ru active
- 2015-08-26 EP EP15756619.1A patent/EP3194087B1/de active Active
- 2015-08-26 US US15/511,693 patent/US10596608B2/en active Active
- 2015-08-26 CN CN201580050335.7A patent/CN106687229B/zh active Active
- 2015-08-26 WO PCT/EP2015/069501 patent/WO2016041746A1/de active Application Filing
-
2020
- 2020-02-06 US US16/783,242 patent/US11318511B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2016041746A1 (de) | 2016-03-24 |
US10596608B2 (en) | 2020-03-24 |
US20200246850A1 (en) | 2020-08-06 |
CN106687229B (zh) | 2019-09-20 |
EP2998040A1 (de) | 2016-03-23 |
US11318511B2 (en) | 2022-05-03 |
EP3194087B1 (de) | 2018-10-10 |
RU2706254C2 (ru) | 2019-11-15 |
RU2017103303A3 (de) | 2018-10-25 |
CN106687229A (zh) | 2017-05-17 |
US20170252786A1 (en) | 2017-09-07 |
RU2017103303A (ru) | 2018-10-17 |
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