EP2125260B1 - Betriebsverfahren für eine haspeleinrichtung zum auf- oder abhaspeln eines metallischen bandes sowie steuereinrichtung und haspeleinrichtung hierzu - Google Patents
Betriebsverfahren für eine haspeleinrichtung zum auf- oder abhaspeln eines metallischen bandes sowie steuereinrichtung und haspeleinrichtung hierzu Download PDFInfo
- Publication number
- EP2125260B1 EP2125260B1 EP08708447A EP08708447A EP2125260B1 EP 2125260 B1 EP2125260 B1 EP 2125260B1 EP 08708447 A EP08708447 A EP 08708447A EP 08708447 A EP08708447 A EP 08708447A EP 2125260 B1 EP2125260 B1 EP 2125260B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- coiler
- control device
- coiling
- driving roller
- 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.)
- Not-in-force
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/003—Regulation of tension or speed; Braking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/02—Winding-up or coiling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/16—Unwinding or uncoiling
Definitions
- the invention relates to an operating method for a reeling device for winding or unwinding (winding or unwinding) of a metallic strip, which has at least one reel, optionally at least one reel associated with the reel, and a control device for the reel and optionally for the drive roller.
- the invention also relates to a control device and a control system for a reel assembly for winding or unwinding a metallic strip, wherein the reel assembly comprises a reel and optionally at least one reel associated with the reel.
- the subject of the invention is a reeling device for winding a metallic strip which has a reel, optionally a reel associated to the reel, and a control device for the reel and optionally for the drive roller.
- the invention also relates to a data carrier.
- Coiler arrangements are used both during hot rolling and during cold rolling, ie also below the recrystallization temperature.
- a steel strip is first reeled in a hot rolling mill as a roll or spool, delivered in this form in a cold rolling mill, and there reeled off for cold rolling.
- both an unwinding reel and a tensioning reel for winding can be present at the end of the travel.
- a tensioning reel may also be present on both sides.
- the KR-A-2005 041 118 discloses a method in which the torque of a reel and its associated capstan is controlled by a controller in response to a measured temperature of the belt.
- the invention has for its object to improve the winding quality and thus the strip quality in a band reel on.
- the torque value may be used as a torque setpoint and / or as a torque limit.
- both terms are to be regarded as the same content.
- the optional drive roller is in particular upstream of the reel.
- a measurement of the current tensile force or the current angle of rotation of the reel is not mandatory in the method according to the invention for the torque input, but irrelevant for the control concept according to the invention, although may be advantageous for additional optional control concepts.
- a current microstructural property of the tape is measured or determined by model calculation, in particular a grain size, a grain structure, a phase portion, a Gibbssche free enthalpy and / or a molecular or atomic distribution. All sizes which are due to the phase characteristics of the material of the tape, e.g. steel or alloy grade.
- the strip is in particular a steel strip or a non-ferrous strip in a rolling mill and / or in a downstream treatment line, for example in a cold rolling mill of the aforementioned type.
- the method according to the invention can also be used particularly well in a hot rolling mill. It is suitable for steel strip of any alloy but also for non-ferrous (NE) metal, e.g. Aluminum, usable.
- NE non-ferrous
- the control device preferably continuously determines torque values such that a variation in the winding moment or strip tension acting in the strip is reduced, wherein the winding moment or the strip tension in the material is preferably constant. It is significant that the variation in the band is reduced because a winding torque or strip tension acting in the band can - but need not - on the motor side or roller side also cause a constant moment.
- the actual value is determined in real time, online and / or continuously, for example at a rate of at least 50 or 25 measurements per second.
- the control device can operate the reel and / or the drive roller torque-limited, ie in particular with a respective currently calculated torque limit.
- the location at which or to which the determination of the actual value takes place preferably lies between the reel and the drive roller, and / or immediately before the drive roller and / or between the reel system formed by the reel and the optional drive roller and a roller stand upstream of the reel system , in particular immediately after the roll stand.
- the strip is the softest; There, the thickness and width of the band are particularly sensitive influenced, so that an actual value measurement is particularly advantageous there.
- an actively or / and passively cooling the cooling line can be arranged.
- an actual, in particular macroscopic, material property of the strip is determined from the actual value, in particular a stiffness, a tensile strength, a surface quality, a temperature, a geometric dimension, a yield strength, a toughness or a ductility.
- a static material property of the strip is also transferred to the control device, in particular a material type, a hot flow limit as a function of the steel grade, an alloy code, information about a chemical Analysis or composition of the strip material and / or associated correction factors.
- control device also outputs a desired reel speed to the reel and / or optionally a desired roller speed to the drive roller, so that the control device can preferably operate the reel and optionally the drive roller in a speed-controlled manner. Even a speed-limited operation is possible.
- control device is designed such that it operates the reel and / or optionally the drive roller according to the aforementioned operating method.
- advantages and preferred embodiments apply analogously to the control device.
- control device particularly advantageously has a sensor for measuring a microstructure property of the strip and / or a model calculation unit for model-based calculation of a current microstructure property and / or a current temperature of the strip.
- the control device or the control system has a model calculation unit for the model-based calculation of a characteristic of the band characterizing the microstructure of the band.
- a model calculation unit for the model-based calculation of a characteristic of the band characterizing the microstructure of the band.
- the model calculation unit can also determine the current strip temperature in the area of the reel device.
- the control system also has a control device and at least one drive control device.
- the object underlying the invention is achieved in that the control device or the control system is designed as described above.
- a data carrier with a program code mapping the operating method also solves the problem.
- the invention is also a rolling mill with a reel device according to the aforementioned embodiment.
- FIG. 1 is a reeling device 1 downstream of a rolling train for hot rolling or cold rolling a steel strip 2, wherein the rolling mill is shown for reasons of clarity only with a last in the feed direction rolling mill 3 and the reel device 1.
- the rolled strip 2 ends at a strip speed V from the last stand 3. It is after passing through a laminar cooling cooling section 4, which may be about 100 m long, fed to the coiler 1 and reeled there.
- the length of the reel device 1 itself is typically 5 m.
- the reel device 1 has a tensioning reel or reel 5, a drive roller 7 designed as a pair of driving rollers, and a control device 10.
- the reel 5 has an expandable coiler mandrel.
- the drive roller 7 is arranged upstream of the reel 5, ie it is arranged between the reel 5 and the last rolling stand 3 of the rolling train.
- the control device 10 controls the reel 5 and the drive roller 7, so specifies their mode of operation and interaction. It is preferably designed as a process-controlled control device 10 in which preferably a processor device operates with a computer program loaded therein.
- the Control device 10 is a computer program for carrying out the operating method according to the invention by means of a data carrier 40 loadable.
- the torque setpoints M H , M R can also be understood in the illustrated embodiment as torque limits, because the drives are operated speed-overdriven, ie the speed controller never reaches its target speed, because the belt can not come fast enough from the mill. This applies to the so-called. Clamped operation of the rolling mill, in which the band is clamped on both sides. This Normal Sasphase upstream or downstream is a Anwickelphase or a Ausfädelphase, in which the speed control must be done differently.
- the control device 10 determines the desired torque values M H , M R automatically, actively and continuously based on current actual values of those "inner" parameters of the belt which determine the stiffness of the belt over the entire winding process.
- temperature sensors 19, 20, 21, 22 which function at an optical measuring principle, for example bolometry, are present at different points of the belt, namely between the last roll stand 3 and the reel system formed by drive roller 7 and reel 5 preferably immediately after the last roll stand 3, further immediately before the drive roller 7, between the drive roller 7 and the reel 5 and immediately in front of the reel 5, respectively online and continuously measure temperature values T 0 , T 1 , T 2 and T 3 .
- the first two temperature sensors 19, 20 (T 0 and T 1 ) are particularly preferred.
- the control device 10 determines currently, in real time, online and continuously the torque setpoints M H , M R such that a variation in the winding torque acting in the band 2 or a Bandzug reduced or preferably constant. This is based on known per se, for example, that the stiffness decreases with increasing temperature. As the temperature increases, the torque is reduced. Measurement (actual value acquisition) and torque calculation take place with a repetition period of approx. 8 ms to 16 ms. So there is a dynamic torque limit instead.
- a current material property of the strip can also be measured (not explicitly shown).
- information or data about static material properties of the belt are transferred from a superordinate control computer 25, ie data that is not online or continuous be changed during tape production.
- the control device 10 together with the drive control devices 16, 18 and the temperature sensors 19, 20, 21, 22 forms a control system 11 for the reel device 1.
- Model calculation unit 30 which receives input data from the host computer 25 or from another data processing unit, data acquisition unit or data input unit 50, these data may be measurements of belt temperature or belt property elsewhere in the upstream mill.
- the control computer 25 or the model calculation unit 30 receive the currently calculated speed and torque setpoints via the control unit 10 for adaptation.
- the model calculation unit 30 uses model heat calculation equations and heat radiation laws to calculate the temperatures T 0 , T 1 , T 2 , T 3 of the belt 2 in the area of the reel device 1 and in this way simulates actual measured values.
- the sensors 19, 20, 21, 22 of the FIG. 1 are not essential in this case.
- the measurement parameters according to the model are sent to the control device 10 for the further calculation of the torques M H , M R.
- the model calculation unit 30 can alternatively or additionally calculate actual values of macroscopic material properties, eg rigidity, toughness, ductility, surface, tensile strength or of microscopic material properties, eg grain structure, grain size, distribution of phases, Gibbs free enthalpy, etc., at arbitrary locations. This can be based on the known modeling methods, such as described in EP 1 576 429 B1 or DE 10 2004 005 919 A1 be resorted to.
- the model calculation unit 30 can calculate in real time or at least for the band control sufficiently fast a size, which as a measure of the not immediately detectable with this speed current Microstructure of the band acts. For example, for the stiffness of the strip, the hot yield point (abbreviated to HYP) is used as a measure, measured in N / mm 2 .
- HYP hot yield point
- the invention is based on an active adaptation of the torque calculation based on actual values of the respective parameters which determine the rigidity of the belt 2 over the entire winding process, namely the belt temperature and the material properties reflecting the microstructure of the belt.
- a current model calculation including a microstructure calculation with regard to the material property, can be used as the actual value.
- the advantage is a more uniform winding moment, i. Tensile torque on the material side (in the material), and thus leads to better winding quality and more consistent belt tension.
- the torque calculation and thus the torque input to the reel motors M1, M2 is related to actual values and actual belt properties, and not to target values which remained unchanged during the winding process.
- the disadvantages of during the winding process remain unchanged target specifications, namely the resulting differences between the setpoint and actual value, which adversely affect the winding quality avoided.
- the quality of the wound tape such as constant thickness and width, is improved.
- the microstructure actual value for example by means of X-ray diffraction, can be determined by direct measurement.
- FIG. 3 shows details of the structure of the control unit 10 and the drive control device 16 of the reel drive and their interaction.
- this description of figures applies analogously.
- the control unit 10 receives - for example from the master computer 25 - the so-called set-up tape data, in particular the desired tape thickness d and bandwidth b. Furthermore, it receives the values which reflect the current band properties, ie, for example, measured values for the temperatures T 0 , T 1 , T 2 , T 3 or values calculated or simulated by the model calculation unit 30 for the material properties or for the current microstructure of the band 2.
- the data and values enter a torque calculation module 61, which calculates the torque setpoint M H.
- a speed calculation module 62 of the control unit 10 calculates the desired reel speed f H as a function of the winding phase predetermined by the master computer 25.
- Winding phases for a coil to be produced are in particular "winding" (start phase), "clamped state” (operating phase) and "unthreading” (final phase).
- the reel setpoint speed f H for the reel motor M 2 is fed via line 12 to a speed control loop. Typical values are in the range of 500 to 1000 revolutions per minute.
- the reel motor M 2 is assigned a tachometer 63 whose measured actual speed f act serves as a controlled variable for calculating the control difference "f act -f H " for a speed controller 64 formed in the drive control device 16.
- the output value of the speed controller 64 is a torque value which, after conversion via the motor flux ⁇ E, becomes a reel target motor current i H.
- the reel target motor current i H serves as input for a current regulator 65, which is likewise formed in the drive control device 16.
- the current controller 65 is supplied as a control variable measured by an ammeter 66 current motor current i act on the input side.
- the current controller 65 controls the drive current of the reel motor M 2 .
- Part of the drive control device 16 is also a torque limiting module 68, which limits the torque value determined by the speed controller 64.
- the torque limiting module 68 both an upper limit and a lower limit, both then referred to as torque reference M H , can be transmitted from the torque calculation module 61 (via the line 12).
- the upper limit is preferably used for the reel 5 and the drive roller 7, the lower limit preferably only for the drive roller 7, the control and regulation can otherwise be done analogous to the reel 5.
- the upper limit is preferably used in the "clamped state" to avoid exceeding the yield strength of the belt 2, the lower limit in the other winding phases.
- the specific reel pull S spec changes as a function of the current tape properties.
- the stiffness / hardness of the strip is used, which depends on the microstructure and also on the strip temperature.
- the tensile torque M H, Z and the bending moment M H, B are therefore strongly dependent on the HYP, apart from the strip thickness d and the bandwidth b, thus thus the actual strip temperature T.
- the temperature values T 0 , T 1 , T 2 , T 3 are used.
- control device 10 can react dynamically to changing belt temperatures and thus ensure a largely constant winding torque in the belt 2 with varying engine torque, thus reducing undesirable tension fluctuations and belt quality losses. It is not only possible to correct periodic fluctuations in tension, for example due to out-of-roundness in the wound strip, as if it were corrected exclusively for band-external parameters such as the current adjustment angle, but also for changes that occur unperiodically. Rather, in the coiling method according to the invention, a measurement of the current reel and / or driving roller torsion angle and a measurement of the current tensile force to determine the train / torque setpoint is not mandatory, because the desired value is derived from the temperature and / or microstructure property of the tape. The dynamic adaptation of the torque limits taking into account the current temperature or microstructure ensures that e.g. the yield strength is not exceeded and a good winding result is achieved with tightly wound band (coil).
- a force calculation module 81 is formed for this purpose in the control unit 10, which calculates the driver setpoint force F R from the roller torque setpoint M R and possibly further influencing variables.
- the driver target force F R is fed to the employment controller 80 of the driver, namely a force regulator 82 formed therein.
- To form the force control circuit there is a hydraulic adjustment 83 acting on the pair of rollers 7, to which the controller 82 influences by means of a controlled valve 84.
- the adjusting movement is represented by the double arrow 85.
- An unillustrated sensor measures the current hydraulic pressure p act . This is supplied after conversion into a current drive force F act the input of the force controller 82 as a controlled variable.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Package Closures (AREA)
- Basic Packing Technique (AREA)
- Massaging Devices (AREA)
- Metal Rolling (AREA)
- Continuous Casting (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL08708447T PL2125260T3 (pl) | 2007-02-02 | 2008-01-30 | Sposób eksploatacji urządzenia zwijającego do nawijania lub odwijania taśmy metalowej oraz urządzenie sterujące i urządzenie zwijające do niego |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007005378A DE102007005378A1 (de) | 2007-02-02 | 2007-02-02 | Betriebsverfahren für eine Haspeleinrichtung zum Auf- oder Abhaspeln eines Bandes sowie Steuereinrichtung und Haspeleinrichtung hierzu |
PCT/EP2008/051132 WO2008092896A1 (de) | 2007-02-02 | 2008-01-30 | Betriebsverfahren für eine haspeleinrichtung zum auf- oder abhaspeln eines metallischen bandes sowie steuereinrichtung und haspeleinrichtung hierzu |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2125260A1 EP2125260A1 (de) | 2009-12-02 |
EP2125260B1 true EP2125260B1 (de) | 2010-10-27 |
Family
ID=39469523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08708447A Not-in-force EP2125260B1 (de) | 2007-02-02 | 2008-01-30 | Betriebsverfahren für eine haspeleinrichtung zum auf- oder abhaspeln eines metallischen bandes sowie steuereinrichtung und haspeleinrichtung hierzu |
Country Status (9)
Country | Link |
---|---|
US (1) | US8713979B2 (ru) |
EP (1) | EP2125260B1 (ru) |
CN (1) | CN101600521B (ru) |
AT (1) | ATE485899T1 (ru) |
BR (1) | BRPI0807342A2 (ru) |
DE (2) | DE102007005378A1 (ru) |
PL (1) | PL2125260T3 (ru) |
RU (1) | RU2459677C2 (ru) |
WO (1) | WO2008092896A1 (ru) |
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2007
- 2007-02-02 DE DE102007005378A patent/DE102007005378A1/de not_active Withdrawn
-
2008
- 2008-01-30 DE DE502008001650T patent/DE502008001650D1/de active Active
- 2008-01-30 BR BRPI0807342-2A patent/BRPI0807342A2/pt not_active IP Right Cessation
- 2008-01-30 RU RU2009132970/02A patent/RU2459677C2/ru not_active IP Right Cessation
- 2008-01-30 CN CN200880003734.8A patent/CN101600521B/zh not_active Expired - Fee Related
- 2008-01-30 AT AT08708447T patent/ATE485899T1/de active
- 2008-01-30 WO PCT/EP2008/051132 patent/WO2008092896A1/de active Application Filing
- 2008-01-30 EP EP08708447A patent/EP2125260B1/de not_active Not-in-force
- 2008-01-30 US US12/524,412 patent/US8713979B2/en not_active Expired - Fee Related
- 2008-01-30 PL PL08708447T patent/PL2125260T3/pl unknown
Also Published As
Publication number | Publication date |
---|---|
RU2459677C2 (ru) | 2012-08-27 |
US20090314873A1 (en) | 2009-12-24 |
WO2008092896A1 (de) | 2008-08-07 |
DE502008001650D1 (de) | 2010-12-09 |
ATE485899T1 (de) | 2010-11-15 |
RU2009132970A (ru) | 2011-03-10 |
DE102007005378A1 (de) | 2008-08-07 |
US8713979B2 (en) | 2014-05-06 |
EP2125260A1 (de) | 2009-12-02 |
CN101600521B (zh) | 2016-01-06 |
PL2125260T3 (pl) | 2011-04-29 |
CN101600521A (zh) | 2009-12-09 |
BRPI0807342A2 (pt) | 2014-05-20 |
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