WO2015071200A1 - Betriebsverfahren für eine kühlstrecke - Google Patents
Betriebsverfahren für eine kühlstrecke Download PDFInfo
- Publication number
- WO2015071200A1 WO2015071200A1 PCT/EP2014/074112 EP2014074112W WO2015071200A1 WO 2015071200 A1 WO2015071200 A1 WO 2015071200A1 EP 2014074112 W EP2014074112 W EP 2014074112W WO 2015071200 A1 WO2015071200 A1 WO 2015071200A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cooling
- rolling stock
- section
- operating method
- point
- Prior art date
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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
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
- B21B37/76—Cooling control on the run-out table
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
- C21D11/005—Process control or regulation for heat treatments for cooling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/573—Continuous furnaces for strip or wire with cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
- F27D15/0206—Cooling with means to convey the charge
-
- 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
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
Definitions
- the present invention relates to an operating method for a cooling line for cooling a flat rolling stock
- cooling section has a plurality of cooling devices
- Wegverfol ⁇ tion of the sections of the rolling stock is carried out during the transport of the sections of the rolling stock through the cooling section with a power stroke and the cooling devices are controlled according to the corresponding Walzgut Vietnameseen for the respective cooling devices associated actual cooling capacities and thereby in each case in the effective range of section of the rolling stock located respective cooling device is subjected to a per ⁇ faculty amount of coolant.
- the present invention further relates to program a Computerpro- comprising machine code that is processable by a controller for a cooling section, wherein the Ab ⁇ processing of the machine code effected by the control means that the control means operates the cooling section according to such a method of operation.
- the present invention further relates to a control device for a cooling section, wherein the control device is programmed with such a computer program.
- the present invention further relates to a cooling section for cooling a flat rolling stock,
- the cooling section has a plurality of cooling devices, by means of which each one in an effective range the respective cooling device befindaji portion of the rolling stock is acted upon with a respective amount of coolant,
- cooling section has a transport device, from which the rolling stock is transported through the cooling section, so that the sections of the rolling stock pass through the effective areas of the cooling devices in succession,
- the cooling section has such a control device ⁇ which operates the cooling section according to such operating method.
- the flat rolling stock In the production of flat rolled metal usually takes place after rolling in a finishing mill usually cooling in a cooling section. In the cooling section, the flat rolling stock is cooled in a predetermined manner.
- the cooling particularly influences the material properties of the flat rolling stock. To achieve particularly favorable material properties, it is in many cases not sufficient to set only one temperature at the outlet of the cooling section. In many cases, a precisely defined course of the temperature (or the enthalpy or another variable that is characteristic of the energy content) must be adhered to.
- the flat rolling stock may for example be a metal strip, in particular a steel strip. Alternatively it can be a heavy plate
- the cooling section has a plurality of individually controllable cooling devices, via which the rolling stock is subjected to a coolant (usually a liquid coolant, usually water or water with additives).
- a coolant usually a liquid coolant, usually water or water with additives.
- only the top of the rolling stock is acted upon by the cooling means with the coolant.
- the upper side is covered by a first part of the cooling devices and the lower side by a second part of the cooling devices
- the Temperaturzu ⁇ was a metal strip over the length of the cooling section kon ⁇ continuously calculate and to observe this temperature curve with a reference temperature curve to compare and regulate the deviations over the cooling line length individually.
- US 2003/0 089 431 AI is known to specify for the rolling stock each have their own time course of cooling, carry out a tracking of Walzguta through the cooling section and to control the cooling devices respectively according to the temporal cooling course of that Walzgutins on which the respective cooling device acts straight. From EP 2 361 699 AI or the corresponding
- US 2012/0 318 478 Al discloses a method of cooling a heavy plate, wherein a pre give ⁇ ner target state of the coarse sheet is at the exit of the cooling section or set behind it by means of cooling.
- a targeted division of the applied coolant quantity is made in a subset applied from above and from below onto the heavy plate. By this measure, in particular an unevenness of the plate should be counteracted.
- the cooling devices are individually controlled.
- Certain steels have particularly strict requirements for the temporal cooling process. They have to be partially cooled to relatively tie ⁇ fe temperatures. At temperatures below about 350 ° C, however, breaking the vapor film, which normally separates the coolant from the surface of the rolling stock to ⁇ together. As a result, the heat transfer from the rolling stock to the coolant is highly nonlinear. The process is difficult to model Ren, causes a significantly uneven cooling in particular ⁇ special between the top and bottom of Walzgu ⁇ tes and sometimes even leads to plastic deformation of the cooled rolling stock. This negatively affects the quality of the rolling stock.
- the object of the present invention is to provide possibilities by means of which an improved operation of the cooling section is possible.
- an operating method of the type called ge ⁇ is configured by
- cooling devices are subdivided into released cooling devices and unreleased cooling devices
- each a virtual Walzgut Vietnamese is projects ⁇ handles and, based on the respective virtual Walzgut Vietnamese, the following steps are performed before the corresponding portion of the real rolling, starting from a predetermined initial location, reaches the effective range of the next released cooling device:
- a state is determined which the corresponding section of the rolling stock has at the starting location of the cooling section
- Walzgutddling determined a total amount of coolant and associated with the rolling stock as a residual amount of coolant, - the transport of Walzgutins through the cooling section is simulated using a Fahrdiagrammms up to a predetermined destination by calculation,
- a respective provisional cooling capacity is determined based on the then current state of Walzgutins un ⁇ ter use of the respective released cooling device associated cooling curve, the Walzgutddling for the respective approved cooling device the smaller of the two values assigned to preliminary cooling performance and residual coolant ⁇ amount as a final cooling capacity and the residual amount of coolant to the final cooling capacity redu ⁇ sheet,
- an actual size of the rolling stock at the destination is determined and compared with a predetermined target size and adjusted by comparison of the total cooling function
- the actual cooling capacities for a number of Walzgut Vietnameseen be determined and assigned to the corresponding Walzgut Vietnameseen associated with the respective released cooling device.
- cooling devices can not be woks ⁇ ben because they are defective and / or because they are too close to the starting location. In principle, however, is also a willkürli ⁇ che blocking (ie non-release) of cooling equipment possible and lent conceivable.
- the share of shared cooling devices can be up to 100% of the cooling devices in extreme cases, so that all cooling devices are released.
- cooling powers applied by these cooling devices are indeed taken into account within the framework of the development of the state of the rolling stock point.
- Thedeleis ⁇ lines of these cooling devices are not in the frame the procedure according to the invention, but otherwise determined. As far be true ⁇ the procedure of the invention, the cooling performance of the cooling equipment are taken for granted.
- the actual value and the target may be tempera ⁇ ren particular.
- the state of the rolling stock point comprises at least one energy quantity.
- the energy quantity may be, for example, the enthalpy or the temperature.
- the energy size can be a scalar. In general, however, it will be a distribution at least in the thickness direction of the rolling stock.
- the picked out Walzgut Vietnamese may additionally contain other energy size, the state of the Subject Author ⁇ fenden portion of the rolled descriptive variables are supplied ⁇ arranged. In this case, the other sizes are taken into account in carrying out the steps following the picking of the rolling stock point. Examples of such GroE KISSING said phase portions of the respective Ab ⁇ section of the rolling stock may be particular.
- the cooling capacities can be characteristic, for example, for an absolute or relative coolant quantity or for a relative valve opening position of the respective cooling device.
- the model can comprise in particular a thermal conduction equation ⁇ coupled with or without phase transformation equation.
- the power stroke of the path tracking is usually 100 ms to 500 ms. In particular, it can be at about 250 ms to 300 ms.
- the picking out (including the steps following the picking out) for each Walzgut Vietnamese.
- the number of rolling stock points, for which then the actual cooling powers are determined equal to 1, namely the corresponding Walzgut Vietnamese itself.
- the determination of the actual cooling performance is further reduced to the Direct assumption of the final cooling performance as actual cooling performance.
- the number of rolling stock points for which the actual cooling capacities are determined is greater than 1, namely the corresponding rolling stock itself and at least one further rolling stock point.
- the cooling devices usually acts on the upper side of the rolling stock. tes.
- the cooling curves for acting on the upper side of the rollingdeeinrichtun ⁇ gen preferably coincide with each other.
- another part of the cooling devices acts on the underside of the rolling stock. In this case, preferably the
- Cooling curves for the acting on the underside of the rolling coolers match each other.
- each part of the cooling means acts on the top and the bottom of the rolling stock and the respective cooling curves for the top coincide with each other and the respective cooling curves for the bottom agree with each other, it is possible that the cooling curves for on the top of the rolling stock acting cooling devices on the one hand and the
- Cooling curves for the cooling devices acting on the underside of the rolling stock on the other hand coincide with each other, so that in total only a single, for alldeeinrich ⁇ lines uniform cooling curve is used.
- the overall cooling function can be scaled and / or offset with a factor.
- the offset may be vectorial, ie have a shift in the abscissa and / or a shift in the ordinate.
- the starting location can be determined as needed. In particular, it can be located in front of the cooling section or in the cooling section. It is also possible that a temperature measuring point is arranged at the start, by means of which a temperature of corresponding section of the rolling stock is detected. In this case, the state of the rolling stock point at the initial location is preferably determined on the basis of the detected temperature.
- thermo measuring station at the starting location is in particular possible if the initial location is in front ofméstre ⁇ bridge.
- the temperature measuring station can be, for example, the so-called finishing road measuring station, at which the final rolling temperature of the rolling stock is detected.
- no temperature measuring station is arranged at the initial location. In this case, the state of Walzgutins otherwise he ⁇ averages the initial location.
- the destination can also be determined as needed. It can be located in particular in the cooling section or behind the cooling section. However, it must be seen in the transport direction of the rolling stock - of course - lie behind the initial location. It is possible that, after adjusting the overall cooling function, the adapted overall cooling function is only utilized for the next selected rolling stock point. Alternatively, it is possible that, after adjusting the overall cooling function for the same rolling stock point, the steps following the picking of the rolling stock point are carried out again. It is therefore created in this case for this Walzgut Vietnamese a renewed, improved forecast. This procedure is possible to ⁇ special when a sufficiently high computing power is available.
- the cooling facilities often have considerable delay ⁇ times.
- the delay times can be in the range of several seconds.
- the delay times of the cooling devices are preferably taken into account. This leads advantageously to the result that during the transport of the sections of the rolling stock through the cooling section, the cooling means time ⁇ properly corresponding to the corresponding Walzgut Vietnamese cooling performance.
- the cooling devices should preferably be activated in good time beforehand. However, the control can only take place when the corresponding cooling capacity for the respective cooling device is determined.
- the steps following the selection of the respective rolling stock point are completed at a time of completion. He ⁇ reaches the corresponding section of the real rolling, starting from the initial location, the effective range of the Next Tier ⁇ th shared cooling device to a cooling start time.
- the operating method according to the invention based on the extension of the cooling section, is applied once within the cooling section.
- the operating method based on the extent of the cooling section, is applied several times in respective areas of the cooling section.
- Such an approach may be particularly advantageous if a so-called dual-phase steel to be cooled.
- the initial location of the local rear area is in this case, seen in the transport direction of the rolling stock behind the destination of the local front area.
- a dual-phase steel to be cooled is located between the areas of the cooling section in which the operating method is used in each case, a Swissab ⁇ section , in which the rolling stock is not actively cooled.
- the intermediate section therefore, pure air cooling by convection and radiation takes place, as well as contact cooling by contact with transport rollers, but no cooling by means of a liquid coolant.
- the portions of the cooling path in which the operation method is respectively applied overlap each other.
- the destinations of the two areas may coincide with each other while the starting locations are falling apart. In this case, can be carried out by the second application of the operating method for the remaining part of the cooling section compared to the first application of the operating method improved Ermitt ⁇ ment of the actual cooling performance.
- the overall cooling function is dependent on or independent of the state of the selected Walzgutins at the start location. Which of these two approaches is beneficial ⁇ incorrect depends on the circumstances of each case.
- the object is further achieved by a computer program having the features of claim 18. According to the invention, the execution of the machine code by the control device causes the control device to carry out an operating method according to the invention, as explained above.
- control device for a cooling section with the features of claim 19.
- control device is programmed with a computer program according to the invention.
- the object is further achieved by a cooling section for cooling a flat rolling stock with the features of claim 20.
- the cooling section to a dung inventions contemporary control device which operates the refrigeration distance ge ⁇ Gurss an operating method according to the invention.
- FIGS. 6 to 9 flow charts
- FIGS 13 and 14 are flowcharts
- FIG. 15 is a timing diagram.
- a flat rolling stock 1 is to be cooled in a cooling section 2.
- the flat rolling stock 1 is made of metal. It may be, for example, a metal strip, in particular a steel strip, as shown in FIG. Alternatively, you can the flat rolled stock 1 is a heavy plate (usually made of steel).
- the cooling section 2 is usually downstream of a finishing train, in which the rolling stock 1 was hot rolled.
- a finishing train in which the rolling stock 1 was hot rolled.
- the finishing line on several rolling mills.
- FIG 1 the sake of clarity, only the last Walzge ⁇ Jost 3 of the finishing train shown.
- the finishing train has only a single rolling stand, for example, designed as Steckel rolling mill or as Rever- sierwalzwerk.
- a temperature measuring station 4 is often arranged, at which a temperature T of the rolling stock 1 is detected.
- the temperature measuring station 4 is referred to below as the distinction of a further, later introduced temperature measuring station as the input side tempera ⁇ turmessplatz 4.
- the cooling section 2 has a plurality of transport rollers 5.
- the rolling stock 1 is transported through the cooling section 2.
- At least some of the trans ⁇ port rollers 5 are driven.
- the transport rollers 5 in their entirety form a transport device, from which the rolling stock 1 is transported through the cooling section 2 in a transport direction with a transport speed v.
- the cooling section 2 also has a multiplicity of cooling devices 6, 7.
- the rolling stock 1 (or more precisely, the section of the strip located in the effective area 8, 9 of the respective cooling device 6, 7 at this time Rolled material 1) is acted upon by a respective amount of coolant of a liquid, mostly water-based coolant 10.
- a respective amount of coolant of a liquid mostly water-based coolant 10.
- upper cooling devices 6 ie cooling devices which act on a Obersei ⁇ te of the rolling stock 1.
- lower cooling devices 7 it is possible for lower cooling devices 7 to be present in addition to the upper cooling devices 6, that is to say cooling devices which act on an underside of the rolling stock 1.
- the cooling section 2 also has a control device 11. Under control and control by the controller 11, the cooling section 2 is operated.
- the control device 11 is usually programmed with a computer program 12.
- the computer program 12 can be supplied to the control device 11, for example via a data carrier 13, on which the computer program 12 is stored in machine-readable form (preferably in an exclusively machine-readable form, in particular in electronic form).
- the data carrier 13 can be configured as desired.
- FIG 1, in which the disk 13 is shown as a USB memory stick, is purely by way of example ⁇ .
- the computer program 12 comprises machine code 14, which can be processed by the control device 11.
- the execution of the machine code 14 by the control device 11 causes the control device 11 operates the cooling section 2 in accordance with a loading ⁇ operating method, which will be explained in more detail below.
- the (real) rolling stock 1 within the control device 11 is subdivided into a plurality of sections 15 in terms of data technology.
- the sections 15 of the rolling stock 1 is assigned a Walzgutddling P each.
- the rolling stock points P are - in contrast to the sections 15 of the real rolling stock 1 - only virtually present in the control device 11. They represent in their entirety a data-technical image of the real rolling stock 1.
- the rolling stock points P are shown in FIG supplemented by a number. This indexing is used to distinguish the rolling stock points P in the context of the explanation of the invention, if necessary from each other. Unless it matters below which rolling stock point P is meant, the reference character P is used without the addition of a number.
- sections 15 of the real rolling stock 1 and virtual rolling stock points P is consistently maintained in the following description. If the sections 15 is mentioned, the sections 15 of the real rolling stock 1 are always and without exception meant. If the Walzgutretericken P is mentioned, is always and without exception, the data-technical image of the sections 15 meant.
- the division into shared and non-shared cooling devices 6, 7 is in any case disjunctive and, as a rule, also complementary. Each cooling device 6, 7 is thus either enabled or disabled.
- cooling devices 6, 7 are released cooling devices. Alternatively, some of the cooling devices 6, 7 may be locked. The blocking of cooling devices 6, 7 can be done as needed. For example, cooling devices 6, 7 may be disabled because they are defective and / or because they are too close to an initial location xA. In principle, however, an arbitrary blocking of cooling devices 6, 7 is possible and conceivable.
- the control device 11 determines final cooling powers mi at least for some of the rolling stock points P (selected rolling stock points P).
- the step Sl he will be ⁇ explained below in connection with FIGS 4 and 6 in greater detail.
- the index i stands for the cooling capacities mi for the number of the respective released cooling device 6, 7 in the order in which the respective fingergegebe ⁇ ne cooling device 6, 7 is achieved by the respective section 15 of the rolling stock 1.
- the control device 11 determines actual cooling capacities mi for a number of rolling stock points P. For the determination of the actual cooling powers mi, the control device 11 uses the final cooling powers mi determined for the selected rolling stock points P.
- the actual cooling performance mi assigns the control device 11 to the corresponding rolling stock points P assigned to the respective released cooling device 6, 7. Possible embodiments of the step S3 will be explained in more detail below in conjunction with FIGS. 7 and 8.
- the rolling stock 1 through the cooling section 2 transported ⁇ benefits. Due to the transport of the rolling stock 1 as a whole through the cooling section 2, the sections 15 of the rolling stock 1 successively pass through the effective areas 8, 9 of the cooling devices 6, 7. It is possible, as shown in FIG. 3, to transport the conveyor 5 in one step S4 is controlled by the control device 11. Alternatively, it is possible that the transport device 5 is controlled by another control device, not shown in the FIG.
- control device 11 performs a tracking of the sections 15 of the rolled good 1 in a step S 5.
- the controller 11 is therefore to each
- the control device 11 controls the cooling devices 6, 7 in a step S6.
- the control takes place in such a way that by means of the released cooling devices 6, 7 the section 15 of the active section 8, 9 of the respective released cooling device 6, 7 Walzgutes 1 with the respective actual cooling power mi acted upon which has been determined for the respective section 15 for the respective released cooling device 6, 7.
- the control device 11 further implements a so-called observer in a step S7.
- the control device 11 expects during the transport of the sections 15 of the rolling stock 1 through the cooling section 2 vonin ⁇ least for these sections 15 continuously a state E in real ⁇ time.
- the state E comprises at least one energy quantity.
- the energy quantity may be, for example, the enthalpy or the temperature.
- the energy size can be a scalar. As a rule, however, it will be a distribution of the energy quantity at least in the thickness direction z of the rolling stock 1.
- the state E may also include further, the Walzgutticianen P associated variables.
- the control device 11 takes into account in the determination (of course) the control of the cooling devices 6, 7.
- the Mitsch takes place using a model 16 (see FIG 1).
- the model 16 is based on mathematical-physical equations.
- the control device 11 generally dissolves at least one heat conduction equation.
- a phase transformation equation can be solved.
- the heat conduction equation may in particular be the Fourier heat equation, see for example the
- phase transformation equation can be used in particular as a so-called Stefan problem. Steps S5 and S7 will be further explained later in connection with FIG. 12.
- steps S2 to S7 are sequentially hinte 3 reinan ⁇ the shown in FIG. With regard to the steps S4 to S6 (or S7) this is also the case in fact. These steps (ie the
- Steps S4 to S6 or S7) are executed cyclically with a power stroke 5t '.
- the working clock 5t ' is usually between 100 ms and 500 ms, for example at 250 ms to 300 ms.
- the step S2 can also be performed cyclically with the power stroke 5t '.
- a processing under detachment from the power stroke 5t 'parallel to the steps S4 to S6 (or S7) is possible. This will become apparent from the following explanations.
- step S3 is coupled to the step S2. If the step S2 with the power stroke 5t 'is cyclically executed, this is also the case in step S3. If the step S2 is executed in parallel to the steps S4 to S6 (or S7), this is also the case in step S3. Again, this will be apparent from the following explanations.
- FIG 4 is of the control device 11 in a
- the following explanations to FIG 4 refer exclusively to this one Walzgut Vietnamese P, so the ⁇ taken Walzgut Vietnamese P, unless expressly stated otherwise.
- a state E is determined by the control device 11, which has the section 15 of the rolling stock 1 corresponding to the selected rolled material point P at an initial location xA of the cooling section 2.
- the determined state E is assigned to the selected rolling stock point P in step S12.
- the initial location xA can lie in front of the cooling section 2 as shown in FIG.
- the initial location xA may be at the location of the input-side temperature measuring station 4, so that the input-side temperature measuring station 4 is arranged at the initial location xA.
- the state E in step S12 it is preferably determined before ⁇ based on the ER- summarized for the section 15 temperature T.
- the control device 11 is further known to have a travel diagram 17 (see FIG. 1).
- the travel diagram 17 indicates which speed vE is expected for the selected rolling stock point P at which simulation time t (calculated from the initial location xA). It is possible that the travel cycle 17 is based on assumptions and expectations, so that an expected result of the operating diagram 17 Geschwin ⁇ speed vE as a rule with the subsequent actual transport speed v of the corresponding real from ⁇ -section 15 of the rolling stock 1 is substantially coincident, However, this does not necessarily apply. Alternatively, it is possible for the travel diagram 17 to be based on a prediction of the transport speed v, which is also maintained with certainty or at least almost certainly later.
- a total amount of coolant is determined by the control device 11 on the basis of a given total cooling function F1.
- the total cooling function Fl describes a cooling which is required to 15 so as to cool the corresponding portion, an actual value I of the respective section 15 to a destination xZ (see FIG 1) has a target size ⁇ EZ.
- the actual size I can be, for example, the temperature of the relevant section 15. However, it is in any case a quantity which can be determined on the basis of the state Z of the relevant section 15.
- the total cooling function F1 is a trivial function, ie independent of the state E of the extracted fenen Walzgutins P at the starting point xA.
- the total amount of coolant can be equal to the total amount of coolant that was determined in the preceding embodiment of step S20 (see there).
- the overall cooling function F1 depends on the state E of the selected rolling stock point P at the initial location xA.
- the total amount of refrigerant with which the korres ⁇ pondierende section 15 of the rolling stock 1 by means ofméein ⁇ devices 6, 7 is to be a total acted upon (by inserting the determined in step S12 state E and a determined based on the state E size is , For example, a surface temperature of the rolling stock 1 or an average temperature of the rolling stock 1) determined in the total cooling function Fl.
- the determined total amount of coolant is - regardless of the nature of their determination - the selected Walzgut Vietnamese P in step S14 as residual coolant amount M assigned ⁇ assigned .
- the total cooling function Fl of the control device 11 is fixedly predetermined, 12.
- the Ge ⁇ felkühlfunktion Fl of the control device is known by other means 11, for example, by default or parameterization tion by a (not shown in the FIG) operator.
- steps S15 and S16 11 simulates the control device computationally transporting the Walzgutins P by the cooling section 2. To this end, sets the controller 11 at step S15 the current position x of the picked out Walzgutins P equal to the initial location xA, the simulation ⁇ time t on the Value 0.
- step S16 the control device 11 writes the current location x of the selected rolling stock point P using the travel diagram 17 and a time step size 5t. The simulation time t is also continued using the time step 5t.
- the time step size 5t can be determined as needed. For example, it can be in the range of a few milliseconds. Under certain circumstances, the time increment 5t be variable.
- the temporal Shawei ⁇ te 5t in areas of the cooling section 2, in which the rolling stock ⁇ point P is not in the effective range 8, 9 one of the cooling devices 6, 7, be chosen larger than in areas of the cooling section 2, in which the Walzgut Vietnamese P is in the effective range 8, 9 one of the cooling devices 6, 7.
- step S17 the controller 11 calculates by means of the model 16 the time evolution of the state E of the considered rolling stock point P with. If the considered
- step S17 is within the scope of the respective execution of step S17 in the effective range 8, 9 one of the released cooling devices 6, 7, the controller 11 further determines a final amount of coolant mi for the ent ⁇ speaking cooling device 6 in the context of the respective processing of step S17 7.
- step S17 will be explained in more detail later in conjunction with FIG.
- step S18 the controller 11 checks whether in
- step S19 the controller 11, the actual size ⁇ I determined.
- the determination is carried out using the state E of the selected rolling stock point P which has now been determined on the basis of the repeated execution of step S17.
- the control device 11 compares the determined actual variable I with the predefined target variable EZ in step S19.
- the control device 11 usually determines the deviation .DELTA. ⁇ between the now determined actual size I and the target size EZ.
- the control device 11 adjusts the overall cooling function F1 on the basis of the comparison-as a rule based on the deviation ⁇ .
- step S11 With regard to the rolling stock point P selected in step S11, the procedure of FIG. 4 is completed. However, the pre ⁇ hens example of FIG 4 is - see the loop in
- step S14 the total cooling function F1 adapted in the previous execution of step S20 is assumed.
- the controller 11 determines in a step S21, whether the current location x, to the transport of the forth ⁇ be accessed Walzgutins P was simulated, the Wirkbe ⁇ rich 8, 9 of one of the cooling devices 6, 7 corresponds.
- step S22 the controller 11 checks whether the current location x, by which the transportation of the picked out Walzgutins P was simulated, the active region 8 a ⁇ of the released upper cooling means 6 corresponds.
- step S23 the control device 11 determines on the basis of the then current state E of the outgoing gripped rolling point P a preliminary cooling power mi for the corresponding approved upper cooling device 6.
- the determination is carried out using a - preferably smooth - cooling curve F2, which is associated with the respective upper cooling device 6.
- the preliminary cooling power mi is always greater than 0. At least it is not less than 0. The value 0 itself is therefore still allowed.
- the preliminary cooling power mi can not assume negative values, which would correspond to heating up the rolling stock point P.
- the preliminary cooling capacity mi may be limited upward.
- the cooling curve F2 is individual for each ⁇ stays awhile upper cooling means. 6 In general, however, the cooling curves F2 for the upper cooling devices 6 coincide with one another. In this case, the cooling curve F2 must be determined only once for all upper cooling devices 6.
- the cooling curve F2 describes, for example, as a function of refreshes ⁇ economic state E is an amount of refrigerant with which the corresponding to the corresponding Walzgut Vietnamese P section 15 is to be applied to the rolling stock. 1
- a relative flow rate (0% to 100%) or an opening position can (open from fully closed to fully) of a valve of the respectivedeein ⁇ device 6 will be described. If the cooling devices 6 have switching valves (open-close), it can be indicated, for example by means of an approximation, how many released cooling devices 6, 7 are to be skipped, starting from a respectively enabled shared cooling device 6.
- control device 11 sets in a step S24, the final cooling capacity mi for that woks ⁇ bene upper cooling device 6 to the smaller of the two values preliminary cooling capacity mi and residual amount of coolant M.
- step S24 it reduces the residual refrigerant amount M by the final cooling capacity mi. Furthermore, in a step S25, the control device 11 orders the determined final valid cooling capacity mi with the picked Walzgutddling P under assignment to the corresponding approved upper cooling device 6. If the current location x, to the transport of the out ⁇ gripped Walzgutins P was simulated, on the other hand does not match the active area 8 of the released upper cooling means 6, the controller 11 proceeds to a step S26. In step S26, the controller 11 checks whether the current location x, to the transport of the forth ⁇ be accessed Walzgutuss P was simulated, the Wirkbe ⁇ rich corresponds to one of the 8 non-shared upper cooling devices.
- step S27 the control device 11 sets the final cooling power mi to a predetermined value for this upper cooling device 6. However, an assignment to the corresponding upper cooling device 6 does not take place.
- the value determined in the course of step S27 is utilized only in the context of a step S28.
- step S28 the controller 11 updates the state E by applying the model 16.
- control device checks in a
- Step S29 whether the current location x, to which the transport of the picked Walzgutins P was simulated, the effective range 9 corresponds to one of the released lower cooling means 7. If this is the case, the controller 11 proceeds to ei ⁇ nem step S30.
- step S30 the Steuerein ⁇ direction 11 determined based on the then current state of E out ⁇ gripped Walzgutins P a preliminary cooling capacity Wed. for the corresponding released lower cooling device 7. If step S28 has already been carried out beforehand, the state E which has already been modified in step S30 is used as part of step S30.
- the determination is carried out - analogously to step S23 - Ver ⁇ under application of a - preferably flat - cooling curve F3, that is associated with the respective lower cooling device.
- the preliminary cooling capacity mi is always greater than 0 or does not assume the value zero at all. It can not accept negative values. It is possible that the cooling curve F3 is individual for the respective lower cooling device 7. In general, however, the cooling curves F3 for the lower cooling devices 7 coincide with one another. In this case, the cooling curve F3 must be determined only once for all lower cooling devices 7.
- step S31 the controller 11 in a step S31, the final cooling capacity mi for that woks ⁇ bene lower cooling device 7 in the smaller of the two values preliminary cooling capacity mi and residual amount of coolant M. Further, they reduced at step S31, the remaining amount of coolant M to the final cooling capacity mi. If already executing the step S24, it is assumed in step S24 already reduced Restkühlmit ⁇ telmenge M as part of step S31. 11 also assigns the controller in a step S32 the determined final cooling performance mi ⁇ the picked out Walzgutddling P under assignment to the appropriate shared lower cooling device 7 too.
- step S33 the control device 11 checks whether the current location x, up to which the transport of the selected rolling stock point P was simulated, corresponds to the active position x. area 9 corresponds to one of the unreleased lower cooling means 7.
- step S34 the control device 11 sets the final cooling capacity mi to a value predetermined for this lower cooling device 7. An assignment to the corresponding lower cooling devices 7 does not take place.
- the value determined in the course of step S34 is utilized only in the context of a step S35.
- step S35 the controller 11 updates the state E by using the model 16.
- the controller 11, when using the model 16 in the step S35 takes into account the cooling capacity mi set in the step S31 or the step S34. If step S28 has already been carried out beforehand, the state E that has already been modified in step S28 is used as part of step S35.
- step S21 S36 un ⁇ ter application of the model 16
- the state of the E singled out Walzgutins P is updated in one step.
- step S36 only an interaction with the environment is modeled, which is not caused by the active cooling by the cooling means 6, 7 (air cooling and / or contact cooling via the transport rollers 5).
- cooling powers mi applied by these cooling devices 6, 7 are taken into account as part of the development of the state E of the rolling stock point P.
- the cooling capacities mi of these cooling devices 6, 7 are not determined in the context of the procedure according to the invention, but accepted as given. Only the cooling capacities mi for the released cooling devices 6, 7 are determined by the procedure according to FIG. In the context of the procedure of FIG.
- the cooling curve ⁇ F2 for the upper cooling means 6 and the cooling curve F3 for the lower cooling means 7 are further independently predetermined.
- the two cooling curves F2, F3 can therefore be different, in particular - see also FIG. 1.
- cooling curves F2 and F3 coincide with each other.
- the statements on the specification of the total cooling function F1 apply accordingly.
- the procedure of FIGS. 4 and 6 can be carried out with the working cycle 5t ', with which the steps S4 to S6 (or S7) of FIG. 3 are also executed. Particularly in this case, it is possible to pick out each rolling stock point P one after the other.
- the step S3 of FIG 3 degenerates in this case to the trivial solution. For only the determined final cooling capacities mi 1: 1 have to be taken over as the actual cooling capacities mi for this one rolling stock point P.
- step S2 of FIG 3 under detachment from the work cycle 5t 'pa rallel ⁇ to steps S4 to S6 (or S7) of FIG 3 trainees to lead.
- a rolling stock point P is iteratively selected.
- not all Walzguta P are picked out.
- at least one further rolling material point P, which is not picked out is thus - at least as a rule - between two directly successive selected rolling stock points P.
- step S3 to continue the determined final cooling capacities Wed 1: 1 as the actual cooling capacity Wed for this Walzgut Vietnamese P - are taken - that the picked out Walzgut Vietnamese P.
- step S 1 If not all rolling stock points P are picked out in the course of step S 1, the actual cooling capacities mi must also be determined in the course of step S 2 for the other not selected rolling stock points P as well. In this case, different approaches are possible. Possible procedures are explained below in connection with FIGS. 7 and 8. In the context of FIG 7 and 8 it is assumed that - see FIG 2 - the Walzguta PI and P5 are picked out, so that between the two immediately successive, selected Walzgut Vietnameseen PI and P5 a total of three other, not singled Walz ⁇ good points P are namely, the rolling stock points P2, P3 and P4. However, analogous procedures are likewise possible if other rolling stock points P are picked out and / or if more or less than three other rolling stock points P not picked out lie between the two selected rolling stock points P.
- the calculation according to FIGS 4 and 6 for the later picked out Walzgut Vietnamese P has to be completed (referred to as the Walzgut Vietnamese P5), to the actual cooling capacity mi for (the first picked out Walzgut Vietnamese P according as the rolling ⁇ point PI) following, not picked Walzgut Vietnamese P (according to example the rolling point P2) to determine.
- FIG. 9 shows a modification of the procedure of FIG. 4, which is possible if a sufficiently high computing power is available.
- the steps S 1 to S 20 of FIG. 4 are combined into groups. The individual procedures in detail are therefore not explained in more detail, since this has already been done in conjunction with FIG.
- step S41 first of all a step S41 is carried out.
- the content of the step S41 corresponds to the steps S11 to S13 of FIG. 4.
- a step S42 is executed.
- the step S42 corresponds in content with the steps S14 to S20 of FIG 4.
- the step S42 is followed by a further step S43, which also corresponds in terms of content to the steps S14 to S20 of FIG. 4.
- Steps S12 and S13 may also be repeated. However, this is not absolutely necessary because the values have not changed.
- the total cooling function F1 adapted in step S20 of step S42 is used in the evaluation of step S14.
- the initial location xA can lie in front of the cooling section 2 as shown in FIG.
- a temperature measuring station 4 can be arranged at the initial location xA.
- the initial location xA it is possible for the initial location xA to lie in the cooling section 2, as shown in FIG. In this case is arranged no tempera ⁇ turmes space usually at the starting location xA.
- the state E must be determined otherwise in this case.
- state E may be known on the basis of the observer mentioned in connection with step S7.
- the destination xZ is ⁇ tending to the representation in FIG 1 behind the cooling section 2.
- the destination location xZ lies in the cooling section 2. Regardless of the position of the initial location xA and the destination xZ, however, the destination xZ must, of course, be behind the initial location xA in the transport direction of the rolling stock 1.
- the coolant 10 so takes place cooling only by natural convection, contact with the transport rollers 5 and radiation of heat, however, not by the coolant 10.
- This approach may be particularly advantageous when cooling a dual-phase steel.
- the areas 18, 19 overlap each other.
- the destination xZ for both regions 18 can, as shown in FIG 12, 19 may be the same, while the starting locations xA various ⁇ each other.
- FIG. 13 shows an implementation of steps S5 and S7 of FIG. 3, it goes without saying that the procedure of FIG. 13 is executed with the operating clock 5t '.
- the control unit 11 sets the location x of the corresponding section 15, which is now real, in contrast to the procedure of FIG. 4, to the initial location xA at the moment a particular section 15 passes the initial location xA.
- the control device 11 detects the current actual one
- a step S53 the control device 11 updates the location x of the tracked section 15 on the basis of the actual actual transport speed v and the work cycle 5t '.
- the steps S51 to S53 essentially correspond to the path tracking of the section 15 as such, ie to the step S5 of FIG. 3
- the control device 11 checks whether the corresponding section 15 is located in the effective region 8, 9 of a cooling device 6, 7. If this is the case, steu ⁇ ert, the controller 11 in a step S55, the corresponding end of the cooling device 6, 7 at.
- step S55 is skipped.
- the steps S54 and S55 correspond substantially with the step S5 3 of FIG
- the controller 11 updates the state E of the corresponding section 15.
- step S56 solves the control device 5 as part of step S56 ent ⁇ speaking the model 16, the heat conduction equation ,
- the controller 11 In the context of step S56, the controller 11 to the extent necessary, the respective activation of the respective cooling means 6, 7.
- the step S56 corresponds Wesentli ⁇ chen the step S7 of Fig. 3
- the procedure of FIG 13 is, as already mentioned, at least for all sections 15 of the rolling stock 1 souge ⁇ leads, which are located between the initial location xA and the destination xZ.
- the controller 11 thus calculates during the transport of the sections 15 of the rolling stock 1 through the cooling ⁇ track 2 with the power stroke 5t 'states E of transported through the cooling section 2 sections 15 of the rolling stock 1 with. Since the step S56 continues to be carried out with the working cycle 5T ', the controller determines 11 to ⁇ E stands of the portions 15 in real time. As shown in FIG 13 are often zusharm ⁇ Lich available to steps S51 to S56 further steps S57 to S60.
- the control device 11 checks in step S57 whether the relevant section 15 passes a temperature measuring station 21.
- the temperature measuring station 21 is arranged behind the starting point xA, in contrast to the temperature measuring station 4 on the input side. Depending on the position of the case the temperature measuring ⁇ space 21 may be arranged behind arrival at the destination xZ or before the destination xZ. Most of the temperature measurement station 21 (output-side temperature measuring station) is arranged behind the cooling section 2, for example between the cooling section 2 and ei ⁇ nem reel 22.
- step S58 detects the control device in step S58 a actual temperature T of the entspre ⁇ sponding portion 15 of the rolled material 1. in step S59 ver ⁇ similar to the controller 11 the detected temperature T with a temperature which is determined based on the determined under the repeatable ⁇ th processing of step S56 state e.
- the control device 11 usually determines the deviation ⁇ between the detected temperature T and the temperature determined on the basis of the state E.
- step S60 the controller 11 performs then based on the comparison - usually based on the deviation ⁇ - min ⁇ least one parameter k of the model 16 after.
- the parameter k for example, the heat transfer from the rolling stock 1 to the coolant 10 can be adjusted.
- the present invention can also be applied when the transport speed v is not consistently the same direction, but the rolling stock 1 is transported back and forth in the cooling section 2.
- the procedure is, as will be explained below in conjunction with FIG 14th According to FIG. 14, the control device 11 selects in one
- Step S61 first one of the cooling devices 6, 7.
- the control device 11 determines those portions 15 of the rolling stock 1, in the considered Ar ⁇ beitstakt 5t 'in the effective range 8, 9 of the Sektek in S61 selected cooling device. 6 , 7 are located.
- the control device 11 uses the sections 15 determined in step S62 to determine the corresponding rolling stock points P and the actual cooling outputs mi assigned to these rolling stock points P for the corresponding cooling device 6, 7. Based on the determined in step S63 actual
- step S65 the control device 11 checks whether it has already carried out the procedure of steps S61 to S64 for all cooling devices 6, 7. If this is not the case, the control device 11 returns to step S61, in which it now selects another, previously not yet selected cooling device 6, 7. Otherwise, the controller 11 proceeds to a step S66. In step S66, the control device 11 outputs the now determined effective drives to the cooling devices 6, 7.
- the delay times t1, t2 are those times that pass from a change in the manipulated variable S of the respective cooling device 6, 7 up to their reaction R.
- the delay times t1, t2 can be in the range of several seconds.
- the delay times t1, t2 may be the same or different. They can also be different from the cooling device 6, 7 to the cooling device 6, 7.
- step S62 of FIG. 14 is modified in this case in such a way that the control device 11 uses the travel diagram 17 to determine those sections 15 of the rolling stock 1 which are additionally in the desired working cycle 5t ' the delay time t1, t2 to be considered in the effective range 8, 9 of the
- Step S61 selected cooling device 6, 7 are located. The remaining steps of FIG. 14 may be retained.
- Cooling start time at least as large as the - possibly greater - the delay times tl, t2 be the next released cooling device 6, 7.
- the present invention has many advantages. For example, a so-called rattling of valves is almost completely avoided.
- the control of the cooling devices 6, 7 instead runs very quiet.
- the method according to the invention operates very reliably even at very low temperatures (for example, below about 350 ° C.). Even a tenfold increase in heat transfer at low temperatures is well controlled.
- the operating method according to the invention is thus also particularly suitable when so-called dual-phase steel is to be cooled.
- the procedure according to the invention offers great flexibility. For example, a high cooling rate can still be used up to a surface temperature of approx. 400 ° C. Then it can be reduced to a very small value, when about 350 ° C below. This is also reflected in the critical point at which the so-called Leidenfrost ⁇ temperature is reached, reduce cooling without that body shall be known in advance. Even the dung OF INVENTION ⁇ modern process offers the opportunity to use it more than once within the same cooling line.
- the present invention relates to the following facts:
- a flat rolling stock 1 is transported through a cooling section 2, so that sections 15 of the rolling stock 1 pass active areas 8, 9 of cooling devices 6, 7 one after the other.
- the sections 15 are assigned virtual rolling stock points P.
- a tracking of the sections 15 is performed with a power stroke 5t '.
- the cooling devices 6, 7 are controlled according to the corresponding rolling material points P for the cooling devices 6, 7 associated actual cooling performance mi.
- the cooling devices 6, 7 are subdivided into released and unreleased cooling devices. Iteratively Walzgutddling P will ever ⁇ wells singled out.
- a state E is determined which the corresponding rolling point P has at the initial location xA.
- An ⁇ hand a total cooling function Fl a total coolant ⁇ quantity is determined and assigned to the Walzgutddling P as Restkühlstoffmen- ge M.
- the transport of the rolling stock point P through the cooling section 2 is simulated using a Fahrdiagrammms 17 mathematically. In this case, by means of a model 16, the temporal evolution of state E is included. If the P Walzgut Vietnamese a shared active region 8, 9 ER ranges is determined based on the then current state of e a jewei ⁇ celled preliminary cooling capacity mi.
- the rolling stock point P is the minimum of provisional cooling capacity mi and residual coolant for the respective released cooling device 6, 7 M is assigned as the final cooling capacity mi.
- the remaining ⁇ coolant amount M is reduced accordingly.
- a value based on the local state E I actual value is compared with a target value to a target EZ ⁇ place xZ.
- the total cooling function Fl is adjusted by the Ver ⁇ equalization.
- the actual cooling powers mi are determined for a number of rolling stock points P and assigned to the rolling stock points P assigned to the respective released cooling device 6, 7.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
- Control Of Heat Treatment Processes (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14802607.3A EP3071343B1 (de) | 2013-11-18 | 2014-11-10 | Betriebsverfahren für eine kühlstrecke und kühlstrecke |
KR1020167016485A KR20160089435A (ko) | 2013-11-18 | 2014-11-10 | 냉각 존 작동 방법 |
US15/037,619 US20160288181A1 (en) | 2013-11-18 | 2014-11-10 | Operating method for a cooling zone |
CN201480063121.9A CN106061637B (zh) | 2013-11-18 | 2014-11-10 | 冷却段及其运行方法、控制装置和计算机程序 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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EP13193234.5 | 2013-11-18 | ||
EP20130193234 EP2873469A1 (de) | 2013-11-18 | 2013-11-18 | Betriebsverfahren für eine Kühlstrecke |
Publications (1)
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WO2015071200A1 true WO2015071200A1 (de) | 2015-05-21 |
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PCT/EP2014/074112 WO2015071200A1 (de) | 2013-11-18 | 2014-11-10 | Betriebsverfahren für eine kühlstrecke |
Country Status (5)
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US (1) | US20160288181A1 (de) |
EP (2) | EP2873469A1 (de) |
KR (1) | KR20160089435A (de) |
CN (1) | CN106061637B (de) |
WO (1) | WO2015071200A1 (de) |
Families Citing this family (5)
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DE102018206660A1 (de) | 2018-04-30 | 2019-10-31 | Sms Group Gmbh | Verfahren zum Betreiben einer Kühlstrecke und Anlage zum Herstellen von Walzprodukten |
EP3599037A1 (de) * | 2018-07-25 | 2020-01-29 | Primetals Technologies Germany GmbH | Kühlstrecke mit einstellung der kühlmittelströme durch pumpen |
EP3865226A1 (de) | 2020-02-11 | 2021-08-18 | Primetals Technologies Germany GmbH | Ermittlung einer sensitivität einer zielgrösse eines walzguts von einer betriebsgrösse einer warmwalzstrasse |
EP4101553B1 (de) | 2021-06-07 | 2024-01-31 | Primetals Technologies Austria GmbH | Kühlen eines walzguts vor einer fertigstrasse einer warmwalzanlage |
AT525283B1 (de) * | 2021-10-29 | 2023-02-15 | Primetals Technologies Austria GmbH | Verfahren zur Herstellung eines Dualphasenstahlbands in einer Gieß-Walz-Verbundanlage, ein mit dem Verfahren hergestelltes Dualphasenstahlband und eine Gieß-Walz-Verbundanlage |
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US6185970B1 (en) | 1998-10-31 | 2001-02-13 | Sms Schloemann-Siemag Ag | Method of and system for controlling a cooling line of a mill train |
DE19963186A1 (de) | 1999-12-27 | 2001-07-12 | Siemens Ag | Verfahren zur Steuerung und/oder Regelung der Kühlstrecke einer Warmbandstrasse zum Walzen von Metallband und zugehörige Vorrichtung |
DE10129565A1 (de) | 2001-06-20 | 2003-01-09 | Siemens Ag | Kühlverfahren für ein warmgewalztes Walzgut und hiermit korrespondierendes Kühlstreckenmodell |
WO2003045599A1 (de) * | 2001-11-15 | 2003-06-05 | Siemens Aktiengesellschaft | Steuerverfahren für eine einer kühlstrecke vorgeordnete fertigstrasse zum walzen von metall-warmband |
EP2361699A1 (de) | 2010-02-26 | 2011-08-31 | Siemens Aktiengesellschaft | Verfahren zur Kühlung eines Blechs mittels einer Kühlstrecke, Kühlstrecke und Steuer- und/oder Regeleinrichtung für eine Kühlstrecke |
WO2011138067A2 (de) | 2010-05-06 | 2011-11-10 | Siemens Aktiengesellschaft | Betriebsverfahren für eine fertigstrasse mit prädiktion der leitgeschwindigkeit |
EP2540404A1 (de) * | 2011-06-27 | 2013-01-02 | Siemens Aktiengesellschaft | Steuerverfahren für eine Warmbandstraße |
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JPS5755421A (en) | 1980-09-19 | 1982-04-02 | Nippon Steel Corp | Control method for continuous cooling |
JP2555116B2 (ja) | 1987-12-18 | 1996-11-20 | 川崎製鉄株式会社 | 鋼材の冷却制御方法 |
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JP4208505B2 (ja) | 2002-07-05 | 2009-01-14 | 東芝三菱電機産業システム株式会社 | 巻取温度制御装置 |
DE102007025447A1 (de) | 2006-10-09 | 2008-04-17 | Siemens Ag | Verfahren zur Steuerung und/oder Regelung eines industriellen Prozesses |
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-
2013
- 2013-11-18 EP EP20130193234 patent/EP2873469A1/de not_active Withdrawn
-
2014
- 2014-11-10 KR KR1020167016485A patent/KR20160089435A/ko not_active Application Discontinuation
- 2014-11-10 WO PCT/EP2014/074112 patent/WO2015071200A1/de active Application Filing
- 2014-11-10 CN CN201480063121.9A patent/CN106061637B/zh active Active
- 2014-11-10 EP EP14802607.3A patent/EP3071343B1/de active Active
- 2014-11-10 US US15/037,619 patent/US20160288181A1/en not_active Abandoned
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EP2361699A1 (de) | 2010-02-26 | 2011-08-31 | Siemens Aktiengesellschaft | Verfahren zur Kühlung eines Blechs mittels einer Kühlstrecke, Kühlstrecke und Steuer- und/oder Regeleinrichtung für eine Kühlstrecke |
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Also Published As
Publication number | Publication date |
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CN106061637A (zh) | 2016-10-26 |
KR20160089435A (ko) | 2016-07-27 |
EP2873469A1 (de) | 2015-05-20 |
EP3071343A1 (de) | 2016-09-28 |
US20160288181A1 (en) | 2016-10-06 |
EP3071343B1 (de) | 2017-09-06 |
CN106061637B (zh) | 2018-02-06 |
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