EP3429772B1 - Vorrichtung und verfahren zum erzeugen eines werkstücks eines vorbestimmten typs - Google Patents

Vorrichtung und verfahren zum erzeugen eines werkstücks eines vorbestimmten typs Download PDF

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Publication number
EP3429772B1
EP3429772B1 EP17712086.2A EP17712086A EP3429772B1 EP 3429772 B1 EP3429772 B1 EP 3429772B1 EP 17712086 A EP17712086 A EP 17712086A EP 3429772 B1 EP3429772 B1 EP 3429772B1
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EP
European Patent Office
Prior art keywords
workpiece
jet nozzle
nozzle arrangement
process model
control device
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.)
Active
Application number
EP17712086.2A
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German (de)
English (en)
French (fr)
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EP3429772A1 (de
Inventor
Angela ANTE
Jan Schröder
Wolfgang Fuchs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Group GmbH
Original Assignee
SMS Group GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP3429772A1 publication Critical patent/EP3429772A1/de
Application granted granted Critical
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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
    • 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
    • B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
    • 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
    • B21B45/04—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 de-scaling, e.g. by brushing
    • B21B45/08—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 de-scaling, e.g. by brushing hydraulically
    • 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

Definitions

  • the invention relates to a device for producing a workpiece of a predetermined type according to the preamble of claim 1, and a corresponding method according to the preamble of claim 8.
  • a generic device and a generic method are made DE 43 02 331 A1 known.
  • the workpiece is in particular a hot rolling stock.
  • the prior art it is known for descaling workpieces, in particular hot rolling, to spray water onto the surfaces of the workpiece at high pressure.
  • the high pressure spray is usually ejected from several nozzles of a scale washer.
  • a scale scrubber in a hot rolling mill an assembly referred to for the removal of scale, d. H. of impurities of iron oxide, provided by the surface of the rolling stock.
  • a production plant for producing a workpiece has hitherto been operated in such a way that a constantly pre-installed operating value is set for the descaling of the workpiece, which remains unchanged during operation of the production plant.
  • a disadvantage of such an operation is that the tinder scrubber high pressure water is always supplied at maximum pressure to achieve a corresponding maximum possible descaling. This leads to easily descaling steel grades, for example, have a high carbon content and / or a low concentration of alloying elements, to an unnecessarily large amount of energy and amount of high pressure water used.
  • Another disadvantage is especially for easy to descaling steel grades in that the above-mentioned operation of a scale washer, the temperature of the workpiece is lowered beyond the required level, which then in turn makes a large amount of heating energy required if the workpiece after descaling, in preparation for further processing steps, is reheated if necessary. Similarly, the temperature control of an upstream heating process is affected because the rolling stock was heated too high or, which in turn leads to increased scale buildup. Due to the previous constant operation of a production plant, the descaling process was not considered as a dynamic component in previously known thermal process models.
  • Known process models which are used in conventional production plants, usually regulate and control forming and / or thermal processes in the production plant.
  • Forming process models usually have an effect on the layout of stitch plans and technological regulations with the aim of achieving optimum strip geometry.
  • Thermal process models are used to adjust and control microstructures via targeted heating and cooling processes.
  • the invention has for its object to optimize the production of a workpiece by simple means, to the effect that a minimization of energy use and a minimum temperature reduction in the descaling of the workpiece is achieved, while maintaining optimal production results.
  • a device is used to produce a workpiece of a predetermined type, in particular a hot rolling stock, and comprises at least a first jet nozzle arrangement with a plurality of jet nozzles, from which a liquid, in particular water, on a surface of the workpiece under high pressure can be discharged thereby descaling the workpiece, and a controller, one with the controller signal-technically connected data memory is provided.
  • a controller one with the controller signal-technically connected data memory is provided.
  • target data of a surface process model for the workpiece can be stored according to at least one predetermined type.
  • a specific energy input, with which a surface of the workpiece is acted upon by the sprayed from the jet nozzle liquid for descaling, is controlled by the control device in dependence of the target data of the surface process model for the predetermined type of workpiece, preferably controllable, such that the specific energy input and, associated therewith, a temperature reduction for the workpiece each assume a minimum value.
  • the invention also provides a method for producing a workpiece of a predetermined type, preferably a hot rolling stock, which is moved along a direction of movement relative to an at least first jet nozzle assembly having a plurality of jet nozzles.
  • a liquid in particular water, is injected from the jet nozzles under high pressure onto a surface of the workpiece, in order thereby to desalinate the workpiece.
  • a control device is signal-connected to a data memory, wherein in the data memory desired data of a surface process model for the workpiece are stored according to at least one predetermined type.
  • the specific energy input which is applied to a surface of the workpiece by the sprayed from the jet nozzle liquid for descaling, is controlled by the control device in dependence of the target data of the surface process model for the predetermined type of workpiece, preferably controlled, such that the specific energy input and, associated therewith, a temperature reduction for the workpiece each assume a minimum value.
  • the invention is based on the essential knowledge that, when producing a workpiece of a predetermined type, nominal data of a new surface process model are taken into account, which process models hitherto known, eg forming process models and / or thermal process models, supplemented.
  • the specific energy input which is applied to a surface of the workpiece by the liquid discharged from the jet nozzle assembly, always to the predetermined type adapted to a workpiece, and suitably controlled by the control means, preferably regulated, until the predetermined, qualitative Entzu concerningswel is just reached.
  • the resulting from the respective operating parameters of descaling cooling of the workpiece is continuously fed to the process model.
  • the different intensities necessary for the descaling of different grades of steel and the variation of the specific energy input in accordance with a control of the blasting nozzle arrangement according to the invention lead to different cooling rates of the work piece due to the ejection of water under high pressure.
  • the incorporation of a surface process model and provided therefor target data for the workpiece according to at least one predetermined type causes that within an overall process model, in particular the thermal process model, the specifications and the control of process steps, the descaling or after being stored, reconfigured.
  • These process steps are, in particular, the control of a heating device, which is upstream of the descaling process, and / or the control of a further heating device, usually an induction heater, which is downstream of the descaling process.
  • a heating device which is upstream of the descaling process
  • an induction heater which is downstream of the descaling process.
  • the present invention provides an apparatus and method for producing a workpiece of a predetermined type, which is preferably a hot-rolled stock.
  • a production plant is operated in such a way that its operating parameters are controlled and / or regulated precisely to the specific energy input just required in order to achieve a qualitatively just sufficient descaling result for the workpiece and the resulting cooling effects of the workpiece / hot strip using an advanced process model for plant control.
  • the surface process model influences the control and / or regulation, e.g. a scale washer or a jet nozzle arrangement for descaling a workpiece, with the aim of obtaining a given and usually scale-free surface, wherein the specific energy input and associated temperature reduction is set or regulated as low as possible.
  • the production plant is e.g. around a hot rolling mill.
  • the workpiece can be a hot rolling or hot strip.
  • the workpiece is subjected in its direction of movement either one or more heating, Abkühl-, Entzu matters- and forming process or operations.
  • the invention leads to the advantage that, when producing a workpiece of a predetermined type, the at least first jet nozzle arrangement for descaling this workpiece is always operated in adaptation to the current treated type of workpiece, for example with a specific steel grade.
  • associated target data in particular of the surface process model, are stored in the data memory for this particular type of workpiece.
  • the storage of the target data relates both to data that is on Based on predefined values, as well as on data that can be generated continuously by calculation processes within the model. These desired data are then read out by the control device and processed appropriately.
  • the variable operating parameters which are set in adaptation to a specific type of workpiece, are advantageously reflected in a variable, ie preferably reduced, cooling of the workpiece during the descaling process.
  • Different grades of steel may differ in carbon content.
  • the rule here is that the descaling of a workpiece is all the easier the higher its carbon content. This applies in particular to unalloyed steels which at the same time have a comparatively high carbon content.
  • the specific energy input applied to the workpiece for descaling is always adjusted to a particular type of workpiece, and preferably to its carbon and alloy element content, thereby saving water and energy.
  • a heating device for heating the workpiece and at least one adjacent and close to the first jet nozzle arrangement arranged temperature measuring device may be provided, which are each signal-connected to the control device.
  • the temperature-measuring device By means of the temperature-measuring device, a temperature of the workpiece can be measured on the surface thereof.
  • desired data in particular also of a thermal process model for the workpiece, are stored in the data memory in accordance with at least one predetermined type.
  • the control device is programmed in such a way that the means of the temperature measuring device measured temperature of the workpiece is compared with a target temperature according to the target data of the thermal process model, based on which the temperature of the heater is controlled or regulated.
  • the heater - in relation to a movement direction of the workpiece - be arranged upstream of the first jet nozzle assembly.
  • a signal inspection device connected to the surface inspection device may be provided, which is arranged with respect to a movement direction of the workpiece downstream of the jet nozzle arrangement and immediately close to the location.
  • the control device is programmed in such a way that, based on the signals of the surface inspection device, a surface quality of the workpiece is determined and compared with a predetermined desired value of the surface process model for the predetermined type of a workpiece. In this way, in practicing the present invention, it is possible to make a direct check of the descaling quality of the workpiece by comparison with a predetermined setpoint of the surface process model.
  • a high-pressure pump unit signal-connected with the control device is provided, which is in fluid communication with the jet nozzles of the jet nozzle arrangement and supplies the jet nozzles with the liquid.
  • the high-pressure pump unit is controlled, preferably regulated, by means of the control device, such that the pressure and / or the volumetric flow with which the fluid is supplied to the jet nozzles is adapted to the desired data, in particular of the surface process model for the workpiece, according to a predetermined type , If, for example, the surface quality of the workpiece should exceed the corresponding predetermined setpoint value of the surface process model, the pressure and / or the volume flow for the liquid supplied to the jet nozzles is correspondingly reduced.
  • the surface quality of the descaled workpiece is determined by means of the surface inspection device and compared with a corresponding desired value of the surface process model, according to an advantageous development of the invention, depending on this comparison, the specific energy input with which a surface of the workpiece of the predetermined type is determined by the from the jet nozzles ejected or sprayed liquid is applied, controlled by the control device, preferably regulated.
  • a feed rate of the workpiece in its direction of movement can be reduced if the surface quality of the workpiece falls below the predetermined target value of the surface process model.
  • the feed rate of the workpiece is increased in its direction of movement as long as the surface quality of the workpiece just keeps the predetermined setpoint of the surface process model.
  • a distance which the jet nozzle arrangement to a surface of the workpiece has, controlled, preferably controlled.
  • the distance of the jet nozzle arrangement from the surface of the workpiece is reduced if the surface quality of the workpiece falls below the predetermined setpoint value of the surface process model for the predetermined type.
  • the distance of the jet nozzle assembly to the surface of the workpiece is increased as long as the surface quality of the workpiece meets the predetermined setpoint of the surface process model for the predetermined type of workpiece.
  • a distance of the jet nozzles, in which the jet nozzle assembly is mounted to the rolling stock not too small, but is set to a value at which the specific energy input for applying the surface of the workpiece with high pressure liquid is just high enough to achieve the desired descaling quality according to the target data of the surface process model.
  • a second jet nozzle arrangement may be provided with a plurality of jet nozzles, which is arranged adjacent to the first jet nozzle arrangement. If the surface quality of the workpiece falls below the predetermined setpoint value of the surface process model, this second jet nozzle arrangement can be switched on in addition to the first jet nozzle arrangement in order to discharge liquid under high pressure onto a surface of the workpiece from the jet nozzles of the second jet nozzle arrangement , for the purpose of descaling the workpiece.
  • the second jet nozzle arrangement is added in order to optimize or intensify the descaling of the workpiece ,
  • the present invention provides an apparatus and method for producing a workpiece of a predetermined type.
  • a production plant 1 is provided, wherein components thereof in the Fig. 1 are shown in a simplified schematic side view.
  • a workpiece 12 is produced, which is preferably hot strip.
  • the workpiece 12 is always referred to below as a hot strip.
  • the hot strip 12 is moved in a certain direction of movement through the production plant 1, wherein this direction of movement in the Fig. 1 symbolized by the arrow labeled "X".
  • the jet nozzle arrangement 14 comprises a plurality of jet nozzles 16, and is part of a device 10 according to the invention, which will be described below with reference to FIGS FIGS. 4 and 5 is explained in detail. It is already pointed out here that by means of the device 10 and its jet nozzle arrangement 14, a liquid 18, preferably water, is injected under high pressure onto the hot strip 12 in order to descalate its surfaces appropriately.
  • a surface process model is important, which is optionally provided in addition to a thermal process model and a forming process model.
  • process models are in the diagram of Fig. 2 illustrated. Here are essential parameters for these individual process models in the form of a matrix called.
  • the surface process model is based on achieving a predetermined surface quality with minimal energy input to the hot strip 12.
  • the device stores target data of the surface process model for the hot strip 12 according to at least one predetermined type.
  • the thermal process model is based on microstructures of the hot strip 12 and is associated with heating / cooling for the hot strip 12.
  • the forming process model concerns - simplified formulated - u.a. a stitch plan calculator, a plant setup for the production plant 1 and the geometric strip quality.
  • Fig. 3 shows a flow chart, according to which the present invention can be carried out.
  • a control loop with an integration of the above three process models illustrated.
  • a surface inspection device 26 (see. Fig. 4 ) disposed downstream of the jet nozzle assembly 14 with respect to the direction of movement X of the hot strip 12 and immediately adjacent thereto.
  • the quality of a surface of the hot strip 12 measured by the surface inspection device 26 is compared with a predetermined setpoint value of the surface process model.
  • a control device 22nd provided with which the data memory 21, in which the target data of the surface process model are stored, is connected by signal technology.
  • FIG. 12 illustrates a control loop to set the desired specific energy input E at which the hot strip 12 is descaled.
  • the abovementioned possibilities are carried out or applied until the surface quality for the hot strip 12 reaches a predetermined desired value (in FIG Fig. 3 achieved as "desired result").
  • the device 10 is in the form of a so-called.
  • Rotor Entzunderers formed in which the jet nozzle assembly 14 has the shape of a rotor head, the drive means in the Fig. 4 Simplified by "M" symbolized - around a rotation axis R is rotated.
  • a plurality of jet nozzles 16 are provided at the jet nozzle arrangement, from each of which a liquid 18, in an injection direction S, is sprayed onto a surface 20 of the hot strip 12.
  • the rotor head 14 is arranged with its rotation axis R inclined relative to the vertical by an angle ⁇ , so that the injection direction S with an orthogonal to the surface 20 of the hot strip 12 the angle ⁇ and is aligned against the direction of movement X.
  • the drive means M of the jet nozzle assembly 14 are signal technically connected to the control device 22, which in the illustration of Fig. 4 is symbolized by the dotted line 23.3. As a result, the control of the rotor speed of the jet nozzle arrangement 14 takes place.
  • the jet nozzle arrangement 14 is designed to be adjustable in height, for example by attachment to a height-adjustable holder, which in the Fig. 4 simplified symbolized by the double arrow "H".
  • a holder H may have an actuator (not shown in the drawing).
  • This actuator is signal technically connected to the controller 22, in the Fig. 4 symbolized by the dotted line 23.5.
  • a distance A which the jet nozzle assembly 14 has to the surface 20 of the hot strip 12, if necessary adjusted by a control of this actuator by means of the control device 22.
  • the distance A decreases, the resulting specific energy input at which the liquid 18 is sprayed onto the surface 20 of the hot strip 12 increases or decreases accordingly.
  • the device 10 comprises a high-pressure pump unit 24, which is signal-technically connected to the control device 22, which in the Fig. 4 symbolically illustrated by the dotted line 23.1.
  • the jet nozzles 16 of the jet nozzle assembly 14 are connected via a connection or pressure supply line D to the high-pressure pump unit 24, so that the jet nozzles 16 are fed by this pressure supply line D with liquid.
  • the liquid 18, which is then sprayed under high pressure from the jet nozzles 16 onto a surface 20 of the hot strip 12, is preferably water, without limiting the invention to water alone for the present invention.
  • At least one pump of the high-pressure pump unit 24 is equipped with a frequency regulator 25. This makes it possible, in particular steplessly to control the high-pressure pump unit 24 by means of the control device 22 in order to change a pressure with which the liquid 18 is supplied to the jet nozzles 16, even in small steps.
  • the data memory 21 of the device 10 is also signal-technically connected to the control device 22. This is in the Fig. 4 symbolized by the dotted line 23.4.
  • target data of a process model, in particular of a surface process model, for a hot strip 12 according to at least one predetermined type are stored.
  • target data for a process model for a plurality of differently predetermined types of hot strip 12 are stored in the data memory 21.
  • a given type of workpiece or hot strip 12 for example, a respective material quality and thickness, which may vary depending on the type of hot strip to be descaled or for different grades of steel.
  • the Ofenliegezeit and atmosphere for a respective hot strip 12 is important.
  • the surface inspection device 26 may be based on an optical measuring principle, in which a surface 20 of the hot strip 12 is a 3D measurement and from this a height profile for the surface 20 of the hot strip 12 is derived.
  • FIG. 4 illustrates further that the surface inspection device 26 - with respect to the direction of movement X of the hot strip 12 - is arranged downstream of the jet nozzle assembly 14, and - symbolized as symbolized by the dotted line 23.2 - is signal-technically connected to the control device 22.
  • the surface inspection device 26 performs the function of a scale detection device.
  • the surface inspection device 26 is designed such that both an upper side and an underside of the hot strip 12 can be checked or analyzed.
  • the surface inspection device 26 can also be based on the measuring principle of spectral analysis.
  • jet nozzle assembly 14 is to be understood as a Rotorentzunderer for the explanation of the present invention by way of example only.
  • a jet nozzle arrangement 14 can be formed in the same way in the form of a stationary spray bar, ie without a rotor head, in which case the individual jet nozzles are aligned in a fixed position in the direction of a surface 20 of the hot strip.
  • the control device 22 is also connected by suitable means of the device 10 signal technically, thereby to adjust the feed rate v for the hot strip 12 and to change. This is in the Fig. 4 symbolized by the dotted line 23.6.
  • FIG. 5 an embodiment of the device 10 according to the invention is shown in a simplified plan view in principle. Same features as the Fig. 4 are each provided with the same reference numerals. In the plan view according to Fig. 5 it can be a subsection of the production plant 1 of Fig.1 act.
  • a first jet nozzle assembly which is the embodiment according to Fig. 4 can act. Furthermore, viewed in the direction of movement X of the hot strip 12, downstream of the first jet nozzle arrangement 14. 1 a second jet nozzle arrangement 14. 2 is arranged, which can be designed, for example, in the form of a stationary cooling beam with a plurality of jet nozzles 16. Both jet nozzle assemblies 14.1 and 14.2 are connected with their jet nozzles 16 each to the high-pressure pump unit 24, as in connection with the Fig. 4 already explained.
  • Fig. 5 is the surface inspection device 26 downstream of the second jet nozzle assembly 14.2. arranged, and - as also already explained - connected to the control device 22 signal technology.
  • the impact pressure with which the liquid 18 impinges on the surface 20 of the hot strip depending on both the pressure and the volume at which the liquid is ejected from the jet nozzles 16, as well as the distance of the jet nozzles 16 from the surface 20 of the hot strip 12.
  • the invention now works as follows: For a descaling desirably of the surfaces 20 of the hot strip 12, this is moved relative to the device 10 according to the invention in the direction of movement X.
  • the liquid 18 is injected from the jet nozzles 16 under high pressure on the surfaces 20 of the hot strip 12, preferably both at the top and at the bottom.
  • target data of a process model in particular of a surface process model, for a plurality of predetermined types of hot strip 12 to be descaled are stored in the data memory 21.
  • desired data for a thermal process model and / or for a forming process model can be stored in the data memory, including the diagram of Fig. 2 and the corresponding explanation is referenced.
  • control panel (not shown) or the like, it is possible to set which type of hot strip 12 is currently moved past the device 10 or its jet nozzle arrangement 14. On the basis of this, the setpoint data of a process model for exactly this type of hot strip 12 can then be read out by the control device 22 and used as preset presets for an operation of a scale scrubber or of the jet nozzle arrangement 14.
  • Fig. 6 and Fig. 7 each show a flowchart for further explanation of the invention.
  • T1 Adjacent and close to the jet nozzle assembly 14 (in Fig. 6 "Tinder scrubber"), a temperature of the hot strip 12 is measured, this measured temperature is denoted by "T1". Furthermore, “T2" denotes a target temperature that is stored in the data memory 12 by, for example, the thermal process model of a predetermined type of workpiece 12. On the basis of this, a comparison calculation is carried out by means of the control device 22, in which the measured temperature T1 is compared with the setpoint temperature T2.
  • a furnace 46 is arranged.
  • This stove can be the heater 2.1 of Fig. 1 act.
  • the furnace 46 is signal-connected to the control device 22, such that a temperature of the furnace 46 can be adjusted by means of the control device 22.
  • a heating device 48 is provided, for example between the jet nozzle arrangement 14 and the furnace 46.
  • T A and T B are then suitably correlated with each other, and then compared with the target temperature T2 of the process model for a hot strip of a predetermined type.
  • FIG. 7 illustrates that a plurality of jet nozzle assemblies 14 may be provided which are arranged one behind the other along the movement direction X of the workpiece 12, in the same way as in the embodiment of FIG Fig. 5 shown and explained.
  • the temperatures upstream and downstream of a in Fig. 7 are measured here in each case with “T n " and "T n + 1 ".
  • each "W” symbolizes different rolling stands, between each of these rolling stands W each scale scrubber or jet nozzle assemblies 14 are arranged according to the present invention.
  • the rolling stock temperature can be adjusted by means of the control device 22, for example by a suitable control of the furnace or Induction heating temperature to selectively change the Walzguttemperatur after descaling to the cooling of the hot strip 12, which actually takes place due to the respective required volume flow of the liquid 18.
  • Fig. 6 the temperature of the furnace 46 is adjusted or regulated as a function of the comparative calculation with respect to the actual temperature T1 (or T A and T B ) and the target temperature T2 of the process model by means of the control device 22. This is done by in the Fig. 6 illustrated control loop illustrated.
  • an additional jet nozzle assembly in the embodiment of Fig. 5 with "14.2”, switch on if necessary.
  • the second jet nozzle assembly 14.2 is switched on, so that consequently the liquid 18 under high pressure from the jet nozzles 16 both the first jet nozzle Arrangement 14.1 and the second jet nozzle assembly 14.2 is sprayed onto a surface 20 of the hot strip 12, to desalt it.
  • the connection of the second jet nozzle assembly 14.2. Undone. In other words, then the second jet nozzle assembly 14.2. switched off again or put out of operation again.
  • the fact that in a normal operation of the invention, only a single jet nozzle arrangement - for the above example, the first jet nozzle assembly 14.1 - are used, contributes to the saving of energy and high-pressure water, and ensures a desired minimum cooling of the Hot strip 12 at its descaling.
  • an adjustment of the operating parameters of the device 10 can be made:
  • the pressure at which the liquid 18 is supplied to the jet nozzles 16 can be lowered until more recognizable Residual scale indicates the falling below a minimum specific energy input E and then this pressure must be slightly increased again.
  • the pressure for the jet nozzles 16 supplied to the liquid 18 is set to a sufficiently large value, with which the surface quality reaches the predetermined target value of the surface process model.
  • a change of the specific energy input E can also take place in that the distance A of the jet nozzle arrangement is changed with respect to the hot strip 12.
  • the servomotor of the holder H are suitably activated by the control device 22. For example, an increase in the distance A causes a reduction in the specific energy input E, and vice versa.
  • the device 10 it is possible to take into account the findings relating to the individual operating parameters for the device 10 for the desired data of a respective process model stored in the data memory 21, or to adapt the desired data to these findings.
  • the desired data of a process model stored in the data memory 21 it is possible for the desired data of a process model stored in the data memory 21 to be adapted or overwritten for a specific type of hot strip 12 by means of the control device 22.
  • Such operation of the device 10 according to the invention is indicated by the double arrow for the signaling connection 23.4 (see. Fig. 4 ) is symbolized between the data memory 21 and the control device 22, and corresponds to a so-called "teach-in" with respect to the data memory 21 and the desired data of a process model stored therein.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP17712086.2A 2016-03-18 2017-03-17 Vorrichtung und verfahren zum erzeugen eines werkstücks eines vorbestimmten typs Active EP3429772B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102016204546 2016-03-18
DE102016204666 2016-03-22
DE102016223721.7A DE102016223721A1 (de) 2016-03-18 2016-11-29 Vorrichtung und Verfahren zum Erzeugen eines Werkstücks eines vorbestimmten Typs
PCT/EP2017/056405 WO2017158166A1 (de) 2016-03-18 2017-03-17 Vorrichtung und verfahren zum erzeugen eines werkstücks eines vorbestimmten typs

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EP3429772A1 EP3429772A1 (de) 2019-01-23
EP3429772B1 true EP3429772B1 (de) 2019-09-11

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EP (1) EP3429772B1 (ja)
JP (1) JP2019512398A (ja)
KR (1) KR102141427B1 (ja)
CN (1) CN108778545B (ja)
DE (1) DE102016223721A1 (ja)
RU (1) RU2701595C1 (ja)
WO (1) WO2017158166A1 (ja)

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WO2017158166A1 (de) 2017-09-21
CN108778545A (zh) 2018-11-09
JP2019512398A (ja) 2019-05-16
KR20180110085A (ko) 2018-10-08
DE102016223721A1 (de) 2017-09-21
CN108778545B (zh) 2021-01-12
EP3429772A1 (de) 2019-01-23
KR102141427B1 (ko) 2020-08-05
RU2701595C1 (ru) 2019-09-30

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