EP2956250A1 - Cooling section comprising power cooling and laminar cooling - Google Patents

Cooling section comprising power cooling and laminar cooling

Info

Publication number
EP2956250A1
EP2956250A1 EP14705081.9A EP14705081A EP2956250A1 EP 2956250 A1 EP2956250 A1 EP 2956250A1 EP 14705081 A EP14705081 A EP 14705081A EP 2956250 A1 EP2956250 A1 EP 2956250A1
Authority
EP
European Patent Office
Prior art keywords
valves
rolling stock
pump
supply system
flat rolling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14705081.9A
Other languages
German (de)
French (fr)
Other versions
EP2956250B1 (en
Inventor
Jian Chen
Sieglinde Ehgartner
Reinhard Karl
Erich Opitz
Florian Pöschl
Alois Seilinger
Thomas Trickl
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.)
Primetals Technologies Austria GmbH
Original Assignee
Primetals Technologies Austria 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
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Application filed by Primetals Technologies Austria GmbH filed Critical Primetals Technologies Austria GmbH
Priority to EP14705081.9A priority Critical patent/EP2956250B1/en
Publication of EP2956250A1 publication Critical patent/EP2956250A1/en
Application granted granted Critical
Publication of EP2956250B1 publication Critical patent/EP2956250B1/en
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Links

Classifications

    • 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
    • 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
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
    • 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
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • 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

Definitions

  • Cooling section with power cooling and laminar cooling The present invention relates to an operating method for a cooling section for a flat rolling stock
  • opening positions are set by the spray bars upstream of the supply line valves according to a applied by means of the respective spray bar on the flat rolling stock respective partial flow.
  • the present invention further relates to a control device for a cooling section for a flat rolling stock
  • control device valves which are arranged in a see between a reservoir for a liquid coolant and ei ⁇ ner number of spray bars extending supply system, according to a applied by means of the respective spray bar on the flat rolling jewei ⁇ ligen partial flow adjusts.
  • the present invention further relates to a Computerpro ⁇ program comprising machine code that can be executed directly from a softwarepro ⁇ programmable control means, causes the execution of the machine code by the software-programmable controller that the control ⁇ device is designed accordingly.
  • the present invention further relates to a cooling section for a flat rolling stock
  • cooling section has an effective area through which the flat rolling stock is guided
  • the effective range can be acted upon by means of a number of spray bars with a liquid coolant, wherein the liquid coolant is supplied to the spray bar via a pump and a supply system from a reservoir for the liquid refrigerant,
  • valves are arranged upstream of the spray bar within the supply system
  • cooling section has a control device
  • opening positions of the valves are set by the control device according to a respective partial flow to be applied to the flat rolling stock by means of the respective spray bar ⁇ kens.
  • the supply of liquid coolant to the spray bars takes place via the one supply system, if a laminar cooling is to be realized, the liquid coolant is supplied to the spray bars via the other supply system.
  • a separate valve is arranged in the supply systems for the respective spray bar and the union of the supply systems takes place only after the respective valves.
  • the object of the present invention is to provide opportunities to supply the spray bar via a single supply system with the liquid coolant and yet both a power cooling and a
  • a Operating method of the type mentioned further characterized in that a delivery rate of the pump and / or a line pressure generated by means of the pump in the supply system is adjusted according to a total applied by means of the spray bar in its entirety on the flat rolling stock ⁇ total.
  • Claim 3 relates to an advantageous embodiment of the control device.
  • a control device of the type mentioned in the introduction is further developed in that the control device controls a delivery rate of a pump upstream of the valves within the supply system and / or a line pressure generated in the supply system by means of the pump in accordance with one of the spray bars Walzgut to be applied total flow ⁇ represents.
  • control device of the total flow is known as such directly.
  • control device automatically determines the total flow on the basis of the partial flows.
  • the object is further achieved by a computer program having the features of claim 4.
  • the execution of the machine code by the software-programmable control device causes the control device to be designed according to the invention.
  • a cooling section of the aforementioned type is further developed in that a delivery rate of Pump and / or a generated by means of the pump in the supply line line pressure is adjusted by the control device according to a total applied by means of the spray bar in its entirety on the flat rolling stock total flow.
  • the line pressure is set between a minimum value and a maximum value. Furthermore, the open positions of the valves between a respective fully closed position and a respective fully open position are continuously or in several stages adjustable. Due to the configuration according to the invention, it is easily acceptable that, in the event that the line pressure has the maximum value, at least one respective one
  • Opening position of the valves exists, in which the respective valve flowing through the liquid coolant
  • the valves comprise, in the case that the line pressure has the maximum value, a respective maximum flow at the respective fully geöffne ⁇ th position and the respective valve cavitated transit liquid refrigerant flowing at the opening position, wherein a respective
  • a cooling section for a flat rolling stock 1 has an effective area 2, through which the flat rolled stock 1 is guided.
  • the liquid coolant 4 is supplied to the spray bar 3i via a pump 5 and a feed system 6 from a reservoir 7 for the liquid coolant 4.
  • the spray bars 3i are arranged both above and below a passline 8, so that the liquid coolant 4 is applied by means of the spray bars 3i to the flat rolled stock 1 both from above and from below. In some cases, however, it may be sufficient if the spray bars 3i are arranged exclusively above the pass line 8.
  • the valves 9i - more precisely, their opening positions si - are adjustable by a control device 10.
  • the valves 9i are controlled by the controller 10 such that the opening positions si of Venti ⁇ le 9i corresponding to a respective partial flow is ⁇ represents fi are to be applied to the flat rolled metal 1 by means of the respective spray bar 3i.
  • a flow rate M of the pump 5 according to a total flux F is set by the control device, with the flat ⁇ means of the spray beams 3i in their entirety to the Walzgut 1 should be applied.
  • control device 10 is designed as a software-programmable control device. This is indicated in FIG 1 in that the abbreviation " ⁇ " for microprocessor is indicated in the control device 10.
  • the control device 10 is programmed with a computer program 11.
  • the computer program 11 comprises machine code 12 which is directly from the control device 10
  • the execution of the machine code 12 by the control device 10 in this case causes the corresponding design and operation of the control device 10.
  • the line pressure p can be set in Zu effets- system 6 between a minimum value pmin and a maximum value pmax.
  • the valves 9i of sides of the control inputs direction can 10 whose opening positions si be adjusted between a fully closed position respective siO and a respective fully open position by sil entspre ⁇ sponding control.
  • the adjustment of the open positions si is infinitely possible according to FIG.
  • a setting could be implemented in several stages.
  • the partial flow fi is additionally also from Lei ⁇ tung pressure p depending of FIG. 2 In the case where the line pressure p has the maximum value pmax, according to FIG.
  • the coolant 4 flowing through the respective valve 9i has a respective maximum flow fil at the respective fully open position sil.
  • each ⁇ bib open position si wherein the cavitated the respective valve 9i flowing through liquid refrigerant 4
  • the liquid refrigerant has a lower part flow on Fik, hereinafter referred Kavitierl Fik.
  • the Ver ⁇ ratio of the respective maximum flow fil to each Kavitierhne Fik is usually maximal at 5: 1. It can also be at a smaller value, for example at 3: 1 or 2: 1.
  • valves 9i are formed as throttle valves.
  • the present invention has many advantages.
  • cavitation can easily be avoided in operation as laminar cooling.
  • retrofitting of existing power cooling systems is possible without further ado. It only need the control device 10 replaced or be reprogrammed and the pump 5 are accordingly efficient.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

A cooling section for flat rolling stock (1) has a working region (2), through which the flat rolling stock (1) is guided. The working region (2) can be supplied with a liquid coolant (4) by means of a number of spray bars (3i). The liquid coolant (4) is fed from a reservoir (7) for the liquid coolant (4) to the spray bars (3i) by means of a pump (5) and a supply system (6). Valves (9i) are arranged upstream of the spray bars (3i) in the supply system (6). Opening positions (si) of the valves (9i) are set by a control unit (10) of the cooling section according to a respective sub-flow (fi) that is to be applied to the flat rolling stock (1) by means of each spray bar (3i). The delivery rate (M) of the pump (5) and/or a line pressure (p) generated by the pump (5) in the supply system (6) are set by the control unit (10) according to the total flow (F) that is to be applied to the flat rolling stock (1) by means of all the spray bars (3i).

Description

Beschreibung / Description Description / Description
Kühlstrecke mit Power Cooling und Laminarkühlung Die vorliegende Erfindung betrifft ein Betriebsverfahren für eine Kühlstrecke für ein flaches Walzgut, Cooling section with power cooling and laminar cooling The present invention relates to an operating method for a cooling section for a flat rolling stock,
- wobei das flache Walzgut durch einen Wirkbereich einer Anzahl von Spritzbalken geführt wird,  wherein the flat rolling stock is guided through an effective range of a number of spray bars,
- wobei den Spritzbalken über eine Pumpe und ein Zuleitungs- System aus einem Reservoir ein flüssiges Kühlmittel zuge¬ führt wird, - wherein the spray bar via a pump and a Zuleitungs- system from a reservoir, a liquid coolant is supplied ¬ leads,
- wobei Öffnungsstellungen von den Spritzbalken innerhalb des Zuleitungssystems vorgeordneten Ventilen entsprechend eines mittels des jeweiligen Spritzbalkens auf das flache Walzgut aufzubringenden jeweiligen Teilflusses eingestellt werden.  - Wherein opening positions are set by the spray bars upstream of the supply line valves according to a applied by means of the respective spray bar on the flat rolling stock respective partial flow.
Die vorliegende Erfindung betrifft weiterhin eine Steuereinrichtung für eine Kühlstrecke für ein flaches Walzgut, The present invention further relates to a control device for a cooling section for a flat rolling stock,
- wobei die Steuereinrichtung Ventile, die in einem sich zwi- sehen einem Reservoir für ein flüssiges Kühlmittel und ei¬ ner Anzahl von Spritzbalken erstreckenden Zuleitungssystem angeordnet sind, entsprechend eines mittels des jeweiligen Spritzbalkens auf das flache Walzgut aufzubringenden jewei¬ ligen Teilflusses einstellt. - The control device valves, which are arranged in a see between a reservoir for a liquid coolant and ei ¬ ner number of spray bars extending supply system, according to a applied by means of the respective spray bar on the flat rolling jewei ¬ ligen partial flow adjusts.
Die vorliegende Erfindung betrifft weiterhin ein Computerpro¬ gramm, das Maschinencode umfasst, der von einer softwarepro¬ grammierbaren Steuereinrichtung unmittelbar ausführbar ist, wobei die Ausführung des Maschinencodes durch die software- programmierbare Steuereinrichtung bewirkt, dass die Steuer¬ einrichtung entsprechend ausgebildet ist. The present invention further relates to a Computerpro ¬ program comprising machine code that can be executed directly from a softwarepro ¬ programmable control means, causes the execution of the machine code by the software-programmable controller that the control ¬ device is designed accordingly.
Die vorliegende Erfindung betrifft weiterhin eine Kühlstrecke für ein flaches Walzgut, The present invention further relates to a cooling section for a flat rolling stock,
- wobei die Kühlstrecke einen Wirkbereich aufweist, durch den das flache Walzgut geführt wird, - wherein the cooling section has an effective area through which the flat rolling stock is guided,
- wobei der Wirkbereich mittels einer Anzahl von Spritzbalken mit einem flüssigen Kühlmittel beaufschlagbar ist, - wobei das flüssige Kühlmittel den Spritzbalken über eine Pumpe und ein Zuleitungssystem aus einem Reservoir für das flüssige Kühlmittel zugeführt wird, - Wherein the effective range can be acted upon by means of a number of spray bars with a liquid coolant, wherein the liquid coolant is supplied to the spray bar via a pump and a supply system from a reservoir for the liquid refrigerant,
- wobei den Spritzbalken innerhalb des Zuleitungssystems Ven- tile vorgeordnet sind,  wherein valves are arranged upstream of the spray bar within the supply system,
- wobei die Kühlstrecke eine Steuereinrichtung aufweist, - wherein the cooling section has a control device,
- wobei Öffnungsstellungen der Ventile von der Steuereinrichtung entsprechend eines mittels des jeweiligen Spritzbal¬ kens auf das flache Walzgut aufzubringenden jeweiligen Teilflusses eingestellt werden. - Wherein opening positions of the valves are set by the control device according to a respective partial flow to be applied to the flat rolling stock by means of the respective spray bar ¬ kens.
Die oben genannten Gegenstände sind allgemein bekannt. The above objects are well known.
Im Stand der Technik erfolgt oftmals eine so genannte In the prior art is often a so-called
Laminarkühlung. Bei einer Laminarkühlung weist die Kühlstrecke eine Anzahl von Spritzbalken auf, mittels derer das flüs¬ sige Kühlmittel entweder nur von oben oder sowohl von oben als auch von unten auf das flache Walzgut aufgebracht wird. Neuerdings ist auch ein so genanntes Power Cooling bekannt. Power Cooling - das heißt das intensive Kühlen von warmem Walzgut - ist eine neuartige Kühlungsmethode zum Kühlen eines Walzguts beim Warmwalzen oder unmittelbar danach. Sie dient dazu, die Mikrostruktur und damit die mechanischen Eigen- schaffen des Endprodukts gezielt einzustellen. Insbesondere sogenannte AHSS (= advanced high strength steels) erfordern immer mehr Kühlungsintensität und Kühlungsflexibilität. Diese Anforderungen werden durch Power Cooling erfüllt. Beim Power Cooling werden mittels der Spritzbalken deutlich größere Vo- lumenströme an flüssigem Kühlmittel auf das flache Walzgut aufgebracht als bei einer Laminarkühlung. Laminar. In a laminar, the cooling section to a number of spray bars, by means of which the FLÜS ¬ SiGe coolant is applied either from the top or both from above and from below on the flat rolling. Recently, a so-called power cooling is known. Power cooling - that is, the intensive cooling of hot rolling stock - is a novel cooling method for cooling a rolling stock during hot rolling or immediately thereafter. It serves to specifically adjust the microstructure and thus the mechanical properties of the final product. In particular, so-called AHSS (= advanced high strength steels) require more and more cooling intensity and cooling flexibility. These requirements are fulfilled by Power Cooling. With Power Cooling, the spray bars apply significantly larger volumes of liquid coolant to the flat rolling stock than with laminar cooling.
Wenn mittels einer Kühlstrecke, die für ein Power Cooling ausgelegt ist, eine Laminarkühlung bewirkt werden soll, dür- fen nicht einfach die den Spritzbalken vorgeordneten Ventile vollständig geöffnet und geschlossen werden. Denn dies hätte zur Folge, dass die große Menge an flüssigem Kühlmittel, die für ein Power Cooling benötigt wird, auf das flache Walzgut aufgebracht wird. Es ist also erforderlich, mittels des je¬ weiligen Spritzbalkens eine deutlich geringere Menge an flüs¬ sigem Kühlmittel auf das flache Walzgut aufzubringen. Im Stand der Technik ist bekannt, zwei getrennte Zuleitungs- systeme vorzusehen, denen jeweils eine eigene Pumpe zugeord¬ net ist. Soll ein Power Cooling realisiert werden, erfolgt die Zuführung an flüssigem Kühlmittel zu den Spritzbalken über das eine Zuleitungssystem, soll eine Laminarkühlung rea- lisiert werden, erfolgt die Zuführung an flüssigem Kühlmittel zu den Spritzbalken über das andere Zuleitungssystem. Hierbei ist es alternativ möglich, dass in den Zuleitungssystemen für den jeweiligen Spritzbalken jeweils ein eigenes Ventil angeordnet ist und die Vereinigung der Zuleitungssysteme erst nach den jeweiligen Ventilen erfolgt. Alternativ kann dieIf laminar cooling is to be achieved by means of a cooling line designed for power cooling, it is not enough to simply fully open and close the valves upstream of the spray bar. Because this would mean that the large amount of liquid coolant, which is needed for a power cooling, on the flat rolling is applied. It is therefore necessary, by means of the depending beam ¬ weiligen spray a significantly smaller amount of FLÜS ¬ Sigem coolant applied to the flat rolling. In the prior art it is known to provide two separate supply systems, each of which has its own pump zugeord ¬ net. If a power cooling is to be realized, the supply of liquid coolant to the spray bars takes place via the one supply system, if a laminar cooling is to be realized, the liquid coolant is supplied to the spray bars via the other supply system. In this case, it is alternatively possible that in each case a separate valve is arranged in the supply systems for the respective spray bar and the union of the supply systems takes place only after the respective valves. Alternatively, the
Vereinigung der Zuleitungssysteme vor dem jeweiligen Ventil erfolgen. In diesem Fall sind die Zuleitungssysteme - bei¬ spielsweise mittels Absperrventilen - gegeneinander verriegelt. Union of supply systems before each valve. In this case, the supply systems - at ¬ example by means of shut-off valves - locked against each other.
Es wäre wünschenswert, die Spritzbalken über ein einziges Zu¬ leitungssystem mit dem flüssigen Kühlmittel versorgen zu können. Dies scheitert in der Praxis jedoch daran, dass für die Realisierung des Power Cooling ein relativ hoher Leitungs- druck erforderlich ist und das das jeweilige Ventil durch¬ strömende flüssige Kühlmittel kavitiert, wenn der das jewei¬ lige Ventil durchströmende Teilfluss an flüssigem Kühlmittel auf einen so niedrigen Wert eingestellt wird, wie er für eine Laminarkühlung erforderlich ist. It would be desirable to be able to supply the spray bar via a single line system to ¬ with the liquid coolant. However, this fails in practice because a relatively high line pressure is required for the realization of the power cooling and that the respective valve kavitiert by ¬ flowing liquid coolant when the jewei ¬ lige valve flowing through partial flow of liquid coolant to a so low value, as required for a laminar cooling.
Die Aufgabe der vorliegenden Erfindung besteht darin, Möglichkeiten zu schaffen, die Spritzbalken über ein einziges Zuleitungssystem mit dem flüssigen Kühlmittel zu versorgen und dennoch sowohl ein Power Cooling als auch eine The object of the present invention is to provide opportunities to supply the spray bar via a single supply system with the liquid coolant and yet both a power cooling and a
Laminarkühlung realisieren zu können. Laminar cooling can be realized.
Die Aufgabe wird durch ein Betriebsverfahren mit den Merkmalen des Anspruchs 1 gelöst. Erfindungsgemäß wird ein Be- triebsverfahren der eingangs genannten Art dadurch weiter ausgebildet, dass eine Förderleistung der Pumpe und/oder ein mittels der Pumpe im Zuleitungssystem generierter Leitungsdruck entsprechend eines mittels der Spritzbalken in ihrer Gesamtheit auf das flache Walzgut aufzubringenden Gesamtflus¬ ses eingestellt wird. The object is achieved by an operating method with the features of claim 1. According to the invention, a Operating method of the type mentioned further characterized in that a delivery rate of the pump and / or a line pressure generated by means of the pump in the supply system is adjusted according to a total applied by means of the spray bar in its entirety on the flat rolling stock ¬ total.
Die Aufgabe wird weiterhin durch eine Steuereinrichtung mit den Merkmalen des Anspruchs 2 gelöst. Anspruch 3 betrifft ei- ne vorteilhafte Ausgestaltung der Steuereinrichtung. The object is further achieved by a control device with the features of claim 2. Claim 3 relates to an advantageous embodiment of the control device.
Erfindungsgemäß wird eine Steuereinrichtung der eingangs ge¬ nannten Art dadurch weiter ausgebildet, dass die Steuereinrichtung eine Förderleistung einer innerhalb des Zuleitungs- Systems den Ventilen vorgeordneten Pumpe und/oder einen mittels der Pumpe im Zuleitungssystem generierten Leitungsdruck entsprechend eines mittels der Spritzbalken ihrer Gesamtheit auf das flache Walzgut aufzubringenden Gesamtflusses ein¬ stellt . According to the invention, a control device of the type mentioned in the introduction is further developed in that the control device controls a delivery rate of a pump upstream of the valves within the supply system and / or a line pressure generated in the supply system by means of the pump in accordance with one of the spray bars Walzgut to be applied total flow ¬ represents.
Es ist möglich, dass der Steuereinrichtung der Gesamtfluss als solcher direkt bekannt ist. Vorzugsweise jedoch ermittelt die Steuereinrichtung den Gesamtfluss anhand der Teilflüsse selbsttätig . It is possible that the control device of the total flow is known as such directly. Preferably, however, the control device automatically determines the total flow on the basis of the partial flows.
Die Aufgabe wird weiterhin durch ein Computerprogramm mit den Merkmalen des Anspruchs 4 gelöst. Erfindungsgemäß bewirkt die Ausführung des Maschinencodes durch die softwareprogrammierbare Steuereinrichtung, dass die Steuereinrichtung erfin- dungsgemäß ausgebildet ist. The object is further achieved by a computer program having the features of claim 4. According to the invention, the execution of the machine code by the software-programmable control device causes the control device to be designed according to the invention.
Die Aufgabe wird weiterhin durch eine Kühlstrecke mit den Merkmalen des Anspruchs 5 gelöst. Vorteilhafte Ausgestaltun¬ gen der Kühlstrecke sind Gegenstand der abhängigen Ansprüche 6 bis 8. The object is further achieved by a cooling section with the features of claim 5. Advantageous Ausgestaltun conditions of the cooling section are the subject of dependent claims 6 to 8.
Erfindungsgemäß wird eine Kühlstrecke der eingangs genannten Art dadurch weiter ausgebildet, dass eine Förderleistung der Pumpe und/oder ein mittels der Pumpe im Zuleitungssystem generierter Leitungsdruck von der Steuereinrichtung entsprechend eines mittels der Spritzbalken in ihrer Gesamtheit auf das flache Walzgut aufzubringenden Gesamtflusses eingestellt wird. According to the invention, a cooling section of the aforementioned type is further developed in that a delivery rate of Pump and / or a generated by means of the pump in the supply line line pressure is adjusted by the control device according to a total applied by means of the spray bar in its entirety on the flat rolling stock total flow.
Aufgrund der entsprechenden Ansteuerung der Pumpe durch die Steuereinrichtung wird der Leitungsdruck zwischen einem Minimalwert und einem Maximalwert eingestellt. Weiterhin sind die Öffnungsstellungen der Ventile zwischen einer jeweiligen vollständig geschlossenen Stellung und einer jeweiligen vollständig geöffneten Stellung stufenlos oder in mehreren Stufen einstellbar. Durch die erfindungsgemäße Ausgestaltung ist es problemlos hinnehmbar, dass in dem Fall, dass der Leitungs- druck den Maximalwert aufweist, mindestens eine jeweiligeDue to the corresponding activation of the pump by the control device, the line pressure is set between a minimum value and a maximum value. Furthermore, the open positions of the valves between a respective fully closed position and a respective fully open position are continuously or in several stages adjustable. Due to the configuration according to the invention, it is easily acceptable that, in the event that the line pressure has the maximum value, at least one respective one
Öffnungsstellung der Ventile existiert, bei welcher das das jeweilige Ventil durchströmende flüssige Kühlmittel Opening position of the valves exists, in which the respective valve flowing through the liquid coolant
kavitiert. Denn aufgrund der entsprechenden Ansteuerung der Pumpe herrscht in dem Fall, dass eine Laminarkühlung reali- siert werden soll, im Zuleitungssystem ein Leitungsdruck, der deutlich niedriger als der Maximalwert ist. Das entsprechende Ventil kann daher wegen des relativ niedrigen Leitungsdruckes relativ weit geöffnet werden, so dass kein Kavitieren mehr zu befürchten ist. cavitated. Because of the corresponding actuation of the pump, in the event that a laminar cooling is to be realized, there is a line pressure in the supply line system that is significantly lower than the maximum value. The corresponding valve can therefore be opened relatively wide because of the relatively low line pressure, so that cavitation is no longer to be feared.
Die Ventile weisen in dem Fall, dass der Leitungsdruck den Maximalwert aufweist, bei der jeweiligen vollständig geöffne¬ ten Stellung einen jeweiligen Maximalfluss und bei der Öffnungsstellung, bei welcher das das jeweilige Ventil durch- strömende flüssige Kühlmittel kavitiert, einen jeweiligenThe valves comprise, in the case that the line pressure has the maximum value, a respective maximum flow at the respective fully geöffne ¬ th position and the respective valve cavitated transit liquid refrigerant flowing at the opening position, wherein a respective
Kavitierfluss auf. Ein Verhältnis des jeweiligen Maximalflus¬ ses zum jeweiligen Kavitierfluss legt vorzugsweise maximal bei 5:1. Die Ventile können, wie allgemein üblich, als Drosselklappen ausgebildet sein. Die oben beschriebenen Eigenschaften, Merkmale und Vorteile dieser Erfindung sowie die Art und Weise, wie diese erreicht werden, werden klarer und deutlicher verständlich im Zusammenhang mit der folgenden Beschreibung der Ausführungsbei- spiele, die in Verbindung mit den Zeichnungen näher erläutert werden. Hierbei zeigen in schematischer Darstellung: Cavitation flow up. Preferably a ratio of the respective Maximalflus ¬ ses to the respective sets Kavitierfluss maximal at 5: 1. The valves can, as is customary, be designed as throttle valves. The above-described characteristics, features and advantages of this invention, as well as the manner in which they are achieved, will become clearer and more clearly understood in connection with the following description of the embodiments which will be described in detail in conjunction with the drawings. Here are shown in a schematic representation:
FIG 1 eine Kühlstrecke von der Seite, 1 shows a cooling section from the side,
FIG 2 Kennlinien und  2 shows characteristics and
FIG 3 ein Ventil im Schnitt. 3 shows a valve in section.
Gemäß FIG 1 weist eine Kühlstrecke für ein flaches Walzgut 1 einen Wirkbereich 2 auf, durch den das flache Walzgut 1 geführt wird. Im Wirkbereich 2 ist eine Anzahl von Spritzbalken 3i (i = 1, 2, 3,...) angeordnet. Mittels der Spritzbalken 3i ist der Wirkbereich 2 mit einem flüssigen Kühlmittel 4 beaufschlagbar. Das flüssige Kühlmittel 4 wird den Spritzbalken 3i über eine Pumpe 5 und ein Zuleitungssystem 6 aus einem Reservoir 7 für das flüssige Kühlmittel 4 zugeführt. Meist sind entsprechend der Darstellung in FIG 1 die Spritzbalken 3i sowohl oberhalb als auch unterhalb einer Passline 8 angeordnet, so dass das flüssige Kühlmittel 4 mittels der Spritzbalken 3i sowohl von oben als auch von unten auf das flache Walzgut 1 aufgebracht wird. In manchen Fällen kann es jedoch ausrei- chen, wenn die Spritzbalken 3i ausschließlich oberhalb der Passline 8 angeordnet sind. According to FIG. 1, a cooling section for a flat rolling stock 1 has an effective area 2, through which the flat rolled stock 1 is guided. In the active region 2, a number of spray bars 3i (i = 1, 2, 3, ...) are arranged. By means of the spray bars 3i, the active region 2 can be acted upon by a liquid coolant 4. The liquid coolant 4 is supplied to the spray bar 3i via a pump 5 and a feed system 6 from a reservoir 7 for the liquid coolant 4. In most cases, as shown in FIG. 1, the spray bars 3i are arranged both above and below a passline 8, so that the liquid coolant 4 is applied by means of the spray bars 3i to the flat rolled stock 1 both from above and from below. In some cases, however, it may be sufficient if the spray bars 3i are arranged exclusively above the pass line 8.
Innerhalb des Zuleitungssystems 6 sind den Spritzbalken 3i Ventile 9i vorgeordnet. Die Ventile 9i - genauer: deren Öff- nungsstellungen si - sind von einer Steuereinrichtung 10 einstellbar. Die Ventile 9i werden von der Steuereinrichtung 10 derart angesteuert, dass die Öffnungsstellungen si der Venti¬ le 9i entsprechend eines jeweiligen Teilflusses fi einge¬ stellt werden, der mittels des jeweiligen Spritzbalkens 3i auf das flache Walzgut 1 aufgebracht werden soll. Weiterhin wird von der Steuereinrichtung eine Förderleistung M der Pumpe 5 entsprechend eines Gesamtflusses F eingestellt, der mit¬ tels der Spritzbalken 3i in ihrer Gesamtheit auf das flache Walzgut 1 aufgebracht werden soll. Alternativ zur Förderleis¬ tung M kann durch eine dem Gesamtfluss F entsprechende An- steuerung der Pumpe 5 ein Leitungsdruck p eingestellt werden, der mittels der Pumpe 5 im Zuleitungssystem 6 generiert wird. Der Gesamtfluss F kann von der Steuereinrichtung 10 selbsttätig direkt durch Aufsummieren der Teilflüsse fi ermittelt werden . Within the supply system 6, the spray bars 3i valves 9i upstream. The valves 9i - more precisely, their opening positions si - are adjustable by a control device 10. The valves 9i are controlled by the controller 10 such that the opening positions si of Venti ¬ le 9i corresponding to a respective partial flow is ¬ represents fi are to be applied to the flat rolled metal 1 by means of the respective spray bar 3i. Further, a flow rate M of the pump 5 according to a total flux F is set by the control device, with the flat ¬ means of the spray beams 3i in their entirety to the Walzgut 1 should be applied. Alternatively to the conveying Leis ¬ tung M can be achieved by corresponding to the total flux F actuation of the pump 5 line pressure p can be set, which is generated by the pump 5 in the supply system. 6 The total flow F can be determined automatically by the control device 10 directly by adding up the partial flows fi.
Die Steuereinrichtung 10 ist in der Regel als softwarepro- grammierbare Steuereinrichtung ausgebildet. Dies ist in FIG 1 dadurch angedeutet, dass in der Steuereinrichtung 10 das Kürzel ,,μΡ" für Mikroprozessor angegeben ist. In diesem Fall ist die Steuereinrichtung 10 mit einem Computerprogramm 11 programmiert. Das Computerprogramm 11 umfasst Maschinencode 12, der von der Steuereinrichtung 10 unmittelbar ausführbar ist. Die Ausführung des Maschinencodes 12 durch die Steuereinrichtung 10 bewirkt in diesem Fall die entsprechende Ausbildung und Betriebsweise der Steuereinrichtung 10. Durch entsprechende Ansteuerung der Pumpe 5 von Seiten derAs a rule, the control device 10 is designed as a software-programmable control device. This is indicated in FIG 1 in that the abbreviation "μΡ" for microprocessor is indicated in the control device 10. In this case, the control device 10 is programmed with a computer program 11. The computer program 11 comprises machine code 12 which is directly from the control device 10 The execution of the machine code 12 by the control device 10 in this case causes the corresponding design and operation of the control device 10. By appropriate control of the pump 5 from the side of
Steuereinrichtung 10 kann der Leitungsdruck p im Zuleitungs- system 6 zwischen einem Minimalwert pmin und einem Maximalwert pmax eingestellt werden. Weiterhin können durch entspre¬ chende Ansteuerung der Ventile 9i von Seiten der Steuerein- richtung 10 deren Öffnungsstellungen si zwischen einer jeweiligen vollständig geschlossenen Stellung siO und einer jeweiligen vollständig geöffneten Stellung sil eingestellt werden. Die Einstellung der Öffnungsstellungen si ist gemäß FIG 2 stufenlos möglich. Alternativ könnte eine Einstellung in meh- reren Stufen realisiert sein. Mit jeder Öffnungsstellung si der Ventile 9i korrespondiert ein jeweiliger Teilfluss fi . Der Teilfluss fi ist gemäß FIG 2 zusätzlich auch vom Lei¬ tungsdruck p abhängig. In dem Fall, dass der Leitungsdruck p den Maximalwert pmax aufweist, existiert gemäß FIG 2 mindestens eine jeweilige Öffnungsstellung si der Ventile 9i, bei welcher das das jeweilige Ventil 9i durchströmende flüssige Kühlmittel 4 kavitiert, d.h. es bilden sich in dem das jeweilige Ventil 9i durchströmenden flüssigen Kühlmittel 4 in Strömungsrichtung gesehen hinter dem jeweiligen Ventil 9i Bläschen. Dieser - als solcher nachteilige und unerwünschte Effekt - kann im Rahmen der vorliegenden Erfindung ohne weiteres hingenommen werden, weil im Rahmen der vorliegenden Erfindung zur Erzielung eines bestimmten Teilflusses fi nicht nur die Öffnungsstellung si des entsprechenden Ventils 9i variiert werden kann, sondern auch die Fördermenge M der Pumpe 5 und/ oder der Leitungsdruck, den die Pumpe 5 im Zuleitungssystem 6 generiert, variiert werden kann. Control device 10, the line pressure p can be set in Zuleitungs- system 6 between a minimum value pmin and a maximum value pmax. Furthermore, the valves 9i of sides of the control inputs direction can 10 whose opening positions si be adjusted between a fully closed position respective siO and a respective fully open position by sil entspre ¬ sponding control. The adjustment of the open positions si is infinitely possible according to FIG. Alternatively, a setting could be implemented in several stages. With each opening position si of the valves 9i corresponds to a respective partial flow fi. The partial flow fi is additionally also from Lei ¬ tung pressure p depending of FIG. 2 In the case where the line pressure p has the maximum value pmax, according to FIG. 2 at least one respective opening position si of the valves 9i exists, at which the liquid coolant 4 flowing through the respective valve 9i kavitiert, ie it forms in the respective valve 9i flowing through the liquid coolant 4 seen in the flow direction behind the respective valve 9i bubbles. This - as such adverse and undesirable effect - can be readily accepted in the present invention, because not only the open position si of the corresponding valve 9i can be varied in the present invention to achieve a certain partial flow fi, but also the flow rate M. the pump 5 and / or the line pressure generated by the pump 5 in the supply system 6, can be varied.
Die nachfolgenden Ausführungen beziehen sich auf den Fall, dass der Leitungsdruck p den Maximalwert pmax aufweist. Gemäß FIG 2 weist das das jeweilige Ventil 9i durchströmende Kühl¬ mittel 4 bei der jeweiligen vollständig geöffneten Stellung sil einen jeweiligen Maximalfluss fil auf. Bei derjenigen je¬ weiligen Öffnungsstellung si, bei welcher das das jeweilige Ventil 9i durchströmende flüssige Kühlmittel 4 kavitiert, weist das flüssige Kühlmittel einen niedrigeren Teilfluss fiK auf, nachfolgend als Kavitierfluss fiK bezeichnet. Das Ver¬ hältnis des jeweiligen Maximalflusses fil zum jeweiligen Kavitierfluss fiK liegt in der Regel maximal bei 5:1 liegt. Es kann auch bei einem kleineren Wert liegen, beispielsweise bei 3:1 oder 2:1. The following statements refer to the case where the line pressure p has the maximum value pmax. According to FIG. 2, the coolant 4 flowing through the respective valve 9i has a respective maximum flow fil at the respective fully open position sil. In that each ¬ weiligen open position si, wherein the cavitated the respective valve 9i flowing through liquid refrigerant 4, the liquid refrigerant has a lower part flow on Fik, hereinafter referred Kavitierfluss Fik. The Ver ¬ ratio of the respective maximum flow fil to each Kavitierfluss Fik is usually maximal at 5: 1. It can also be at a smaller value, for example at 3: 1 or 2: 1.
Aufgrund des Umstands, dass durch eine entsprechende Verrin¬ gerung der Förderleistung M und/oder eine entsprechende Ver- ringerung des Leitungsdruckes p das Kavitieren vermieden werden kann, ist es gemäß FIG 3 ohne weiteres möglich, dass die Ventile 9i als Drosselklappen ausgebildet sind. Due to the fact that by a corresponding Verrin ¬ delay the delivery rate M and / or a corresponding reduction of the line pressure p, the cavitation can be avoided, it is possible as shown in FIG 3 without further that the valves 9i are formed as throttle valves.
Die vorliegende Erfindung weist viele Vorteile auf. Insbeson- dere kann auf einfache Weise im Betrieb als Laminarkühlung ein Kavitieren vermieden werden. Weiterhin ist ohne Weiteres ein Nachrüsten bestehender Power Cooling-Anlagen möglich. Es müssen lediglich die Steuereinrichtung 10 ausgetauscht oder umprogrammiert werden und die Pumpe 5 entsprechend tüchtig werden . The present invention has many advantages. In particular, cavitation can easily be avoided in operation as laminar cooling. Furthermore, retrofitting of existing power cooling systems is possible without further ado. It only need the control device 10 replaced or be reprogrammed and the pump 5 are accordingly efficient.
Obwohl die Erfindung im Detail durch das bevorzugte Ausfüh- rungsbeispiel näher illustriert und beschrieben wurde, so ist die Erfindung nicht durch die offenbarten Beispiele einge¬ schränkt und andere Variationen können vom Fachmann hieraus abgeleitet werden, ohne den Schutzumfang der Erfindung zu verlassen . Although the invention in detail has been illustrated approximately example in more detail by the preferred execution and described, the invention is not ¬ limited by the disclosed examples and other variations can be derived by those skilled thereof, without departing from the scope of the invention.
Bezugs zeichenliste 1 flaches Walzgut Reference sign list 1 flat rolling stock
2 Wirkbereich  2 effective range
3i Spritzbalken  3i spray bar
4 Kühlmittel  4 coolants
5 Pumpe  5 pump
6 Zuleitungssystem  6 supply system
7 Reservoir  7 reservoir
8 Passline  8 pass lines
9i Ventile  9i valves
10 Steuereinrichtung  10 control device
11 Computerprogramm 11 computer program
12 Maschinencode  12 machine code
F Gesamtfluss F total flow
fi Teilflüsse fi partial flows
fiK Kavitierfluss fiK cavitation flow
fil Maximalfluss fil maximum flow
M Förderleistung  M delivery rate
p Leitungsdruck p line pressure
pmin Minimalwert pmin minimum value
pmax Maximalwert pmax maximum value
si Öffnungsstellungen si open positions
siO vollständig geschlossene Stellungen sil vollständig geöffnete Stellungen completely closed positions sil completely opened positions

Claims

Patentansprüche / Patent Claims Claims / Patent Claims
1. Betriebsverfahren für eine Kühlstrecke für ein flaches Walzgut ( 1 ) , 1. Operating method for a cooling section for a flat rolling stock (1),
- wobei das flache Walzgut (1) durch einen Wirkbereich (2) einer Anzahl von Spritzbalken (3i) geführt wird, - wherein the flat rolling stock (1) is guided through an effective area (2) of a number of spray bars (3i),
- wobei den Spritzbalken (3i) über eine Pumpe (5) und ein Zu- leitungssystem (6) aus einem Reservoir (7) ein flüssiges Kühlmittel (4) zugeführt wird,  - wherein the spray bar (3i) via a pump (5) and a supply system (6) from a reservoir (7), a liquid coolant (4) is supplied,
- wobei Öffnungsstellungen (si) von den Spritzbalken (3i) innerhalb des Zuleitungssystems (6) vorgeordneten Ventilen (9i) entsprechend eines mittels des jeweiligen Spritzbal¬ kens (3i) auf das flache Walzgut (1) aufzubringenden jewei¬ ligen Teilflusses (fi) eingestellt werden und - Wherein opening positions (si) of the spray bar (3i) within the supply system (6) upstream valves (9i) according to a means of the respective Spritzbal ¬ kens (3i) applied to the flat rolling stock (1) jewei ¬ term partial flow (fi) set be and
- wobei eine Förderleistung (M) der Pumpe (5) und/oder ein mittels der Pumpe (5) im Zuleitungssystem (6) generierter Leitungsdruck (p) entsprechend eines mittels der Spritzbal¬ ken (3i) in ihrer Gesamtheit auf das flache Walzgut (1) aufzubringenden Gesamtflusses (F) eingestellt wird. - wherein a delivery rate (M) of the pump (5) and / or a by means of the pump (5) in the supply system (6) generated line pressure (p) according to a means of Spritzbal ¬ ken (3i) in their entirety on the flat rolling stock ( 1) to be applied total flux (F) is set.
2. Steuereinrichtung für eine Kühlstrecke für ein flaches Walzgut ( 1 ) , 2. Control device for a cooling section for a flat rolling stock (1),
- wobei die Steuereinrichtung Ventile (9i), die in einem sich zwischen einem Reservoir (7) für ein flüssiges Kühlmittel (4) und einer Anzahl von Spritzbalken (3i) erstreckenden - wherein the control means valves (9i), which in a between a reservoir (7) for a liquid coolant (4) and a number of spray bars (3i) extending
Zuleitungssystem (6) angeordnet sind, entsprechend eines mittels des jeweiligen Spritzbalkens (3i) auf das flache Walzgut (1) aufzubringenden jeweiligen Teilflusses (fi) einstellt, Supply system (6) are arranged, according to a by means of the respective spray bar (3i) on the flat rolling stock (1) to be applied to each partial flow (fi),
- wobei die Steuereinrichtung eine Förderleistung (M) einer innerhalb des Zuleitungssystems (6) den Ventilen (9i) vor¬ geordneten Pumpe (5) und/oder einen mittels der Pumpe (5) im Zuleitungssystem (6) generierten Leitungsdruck (p) entsprechend eines mittels der Spritzbalken (3i) ihrer Gesamt- heit auf das flache Walzgut (1) aufzubringenden Gesamtflus¬ ses (F) einstellt. - wherein the control means a delivery rate (M) within the supply system (6) the valves (9i) before ¬ ordered pump (5) and / or by means of the pump (5) in the supply system (6) generated line pressure (p) according to a by means of the spray bar (3i) of their entirety on the flat rolling stock (1) to be applied Gesamtflus ¬ ses (F) adjusts.
3. Steuereinrichtung nach Anspruch 2, 3. Control device according to claim 2,
dadurch gekennzeichnet, characterized,
dass die Steuereinrichtung den Gesamtfluss (F) anhand der Teilflüsse (fi) selbsttätig ermittelt. the control device automatically determines the total flow (F) on the basis of the partial flows (fi).
4. Computerprogramm, das Maschinencode (12) umfasst, der von einer softwareprogrammierbaren Steuereinrichtung (10) unmittelbar ausführbar ist, wobei die Ausführung des Maschinencodes (12) durch die softwareprogrammierbare Steuereinrich- tung (10) bewirkt, dass die Steuereinrichtung (10) gemäß An¬ spruch 2 oder 3 ausgebildet ist. A computer program comprising machine code (12) directly executable by a software programmable controller (10), wherein execution of the machine code (12) by the software programmable controller (10) causes the controller (10) to operate according to An ¬ award 2 or 3 is formed.
5. Kühlstrecke für ein flaches Walzgut (1), 5. cooling section for a flat rolling stock (1),
- wobei die Kühlstrecke einen Wirkbereich (2) aufweist, durch den das flache Walzgut (1) geführt wird,  - wherein the cooling section has an effective area (2) through which the flat rolling stock (1) is guided,
- wobei der Wirkbereich (2) mittels einer Anzahl von Spritzbalken (3i) mit einem flüssigen Kühlmittel (4)  - wherein the effective area (2) by means of a number of spray bars (3i) with a liquid coolant (4)
beaufschlagbar ist,  can be acted on,
- wobei das flüssige Kühlmittel (4) den Spritzbalken (3i) über eine Pumpe (5) und ein Zuleitungssystem (6) aus einem - Wherein the liquid coolant (4) the spray bar (3i) via a pump (5) and a supply system (6) from a
Reservoir (7) für das flüssige Kühlmittel (4) zugeführt wird, Reservoir (7) for the liquid coolant (4) is supplied,
- wobei den Spritzbalken (3i) innerhalb des Zuleitungssystems (6) Ventile (9i) vorgeordnet sind,  - wherein the spray bar (3i) within the supply system (6) valves (9i) are arranged upstream,
- wobei die Kühlstrecke eine Steuereinrichtung (10) aufweist,- wherein the cooling section has a control device (10),
- wobei Öffnungsstellungen (si) der Ventile (9i) von der - wherein opening positions (si) of the valves (9i) of the
Steuereinrichtung (10) entsprechend eines mittels des je¬ weiligen Spritzbalkens (3i) auf das flache Walzgut (1) auf¬ zubringenden jeweiligen Teilflusses (fi) eingestellt werden und Control means (10) corresponding to a means of each ¬ weiligen spray beam (3i) to the flat rolled metal (1) are set to ¬ zubringenden respective partial flow (fi) and
- wobei eine Förderleistung (M) der Pumpe (5) und/oder ein mittels der Pumpe (5) im Zuleitungssystem (6) generierter Leitungsdruck (p) von der Steuereinrichtung (10) entsprechend eines mittels der Spritzbalken (3i) in ihrer Gesamt- heit auf das flache Walzgut (1) aufzubringenden Gesamtflus¬ ses (F) eingestellt wird. - wherein a delivery rate (M) of the pump (5) and / or a by means of the pump (5) in the supply system (6) generated line pressure (p) from the control device (10) corresponding to one by means of the spray bar (3i) in their overall is set to the flat rolling stock (1) to be applied Gesamtflus ¬ ses (F).
6. Kühlstrecke nach Anspruch 5, 6. Cooling section according to claim 5,
d a d u r c h g e k e n n z e i c h n e t , characterized ,
dass der Leitungsdruck (p) zwischen einem Minimalwert (pmin) und einem Maximalwert (pmax) eingestellt wird, dass die Öff- nungsstellungen (si) der Ventile (9i) zwischen einer jeweiligen vollständig geschlossenen Stellung (siO) und einer jeweiligen vollständig geöffneten Stellung (sil) stufenlos oder in mehreren Stufen einstellbar sind und dass in dem Fall, dass der Leitungsdruck (p) den Maximalwert (pmax) aufweist, min- destens eine jeweilige Öffnungsstellung (si) der Ventile (9i) existiert, bei welcher das das jeweilige Ventil (9i) durch¬ strömende flüssige Kühlmittel (4) kavitiert. in that the line pressure (p) is set between a minimum value (pmin) and a maximum value (pmax), that the opening positions (si) of the valves (9i) between a respective fully closed position (siO) and a respective fully open position ( sil) are infinitely or in several stages adjustable and that in the case that the line pressure (p) has the maximum value (pmax), at least one respective opening position (si) of the valves (9i) exists, in which the respective valve (9i) kavitiert by ¬ flowing liquid coolant (4).
7. Kühlstrecke nach Anspruch 6, 7. Cooling section according to claim 6,
d a d u r c h g e k e n n z e i c h n e t , characterized ,
dass die Ventile (9i) in dem Fall, dass der Leitungsdruck (p) den Maximalwert (pmax) aufweist, bei der jeweiligen vollstän¬ dig geöffneten Stellung (sil) einen jeweiligen Maximalfluss (fil) und bei der Öffnungsstellung (si) , bei welcher das das jeweilige Ventil (9i) durchströmende flüssige Kühlmittel (4) kavitiert, einen jeweiligen Kavitierfluss (fiK) aufweisen und dass ein Verhältnis des jeweiligen Maximalflusses (fil) zum jeweiligen Kavitierfluss (fiK) maximal bei 5:1 liegt. that the valves (9i) in the case that the line pressure (p) has the maximum value (pmax), at the respective completeness, ¬ dig open position (sil) a respective maximum flow (fil) and in the open position (si), wherein the liquid coolant (4) flowing through the respective valve (9i) has a respective cavitating flow (fiK) and a ratio of the respective maximum flow (fil) to the respective cavitating flow (fiK) is a maximum of 5: 1.
8. Kühlstrecke nach Anspruch 5, 6 oder 7, 8. Cooling section according to claim 5, 6 or 7,
d a d u r c h g e k e n n z e i c h n e t , characterized ,
dass die Ventile (9i) als Drosselklappen ausgebildet sind. the valves (9i) are designed as throttle valves.
EP14705081.9A 2013-02-15 2014-02-07 Cooling section with power cooling and laminar cooling Active EP2956250B1 (en)

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EP2767352A1 (en) * 2013-02-14 2014-08-20 Siemens VAI Metals Technologies GmbH Cooling of a metal strip with position-regulated valve device
CN105414204B (en) * 2015-12-07 2017-11-28 武汉钢铁有限公司 Laminar flow cooling control system and method for hot-strip
EP3495056B1 (en) * 2017-12-11 2020-09-16 Primetals Technologies Austria GmbH Improved control of water conservancy of a cooling section
EP3599037A1 (en) 2018-07-25 2020-01-29 Primetals Technologies Germany GmbH Cooling section with adjustment of the cooling agent flow by means of pumping
US20200188975A1 (en) * 2018-12-12 2020-06-18 Primetals Technologies USA LLC Temperature control system
EP3760326A1 (en) 2019-07-03 2021-01-06 Primetals Technologies Germany GmbH Cooling line with valves and pressure vessels for preventing pressure surges
EP3895819B1 (en) 2020-04-14 2023-06-07 Primetals Technologies Germany GmbH Operation of a cooling device with minimum working pressure
DE102020205252A1 (en) * 2020-04-24 2021-10-28 Kocks Technik Gmbh & Co Kg Long product cooling device and method for long product cooling using the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014032838A1 (en) * 2012-09-03 2014-03-06 Sms Siemag Ag Method and device for dynamically supplying coolant to a cooling device for cooling metal strip or other rolled stock

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US298224A (en) * 1884-05-06 Flanging-machine
GB1038359A (en) * 1964-05-27 1966-08-10 Drever Co Roller pressure quench system
US4720310A (en) * 1981-11-26 1988-01-19 Union Siderurgique Du Nord Et De L'est De La France (Usinor) Process for effecting the controlled cooling of metal sheets
JP2952625B2 (en) * 1992-10-13 1999-09-27 新日本製鐵株式会社 Water cooling control method for steel bars and wires
CN2261898Y (en) 1996-07-05 1997-09-10 鞍山钢铁公司 Controlled cooling device for medium-thickness plate
DE19854675C2 (en) * 1998-11-26 2002-09-26 Thyssenkrupp Stahl Ag Device for cooling a metal strip, in particular a hot wide strip
US20020104597A1 (en) * 1999-07-09 2002-08-08 Ipsco Enterprises Inc. Method and apparatus for producing steel
DE20006508U1 (en) * 2000-04-08 2000-08-31 Achenbach Buschhuetten Gmbh Roller cooling and / or lubricating device for cold strip rolling mills, in particular fine strip and foil rolling mills
CN2675279Y (en) 2003-10-24 2005-02-02 东北大学 Voltage-regulating energy-saving water-supplying device for hot rolled steel controlled-cooling system
EP1938911A1 (en) 2006-12-27 2008-07-02 VAI Industries (UK) Ltd. Apparatus and method for controlled cooling
CN201324757Y (en) 2008-12-29 2009-10-14 中国第一重型机械股份公司 Technological lubricating device for hot rolling mill
WO2011092851A1 (en) * 2010-01-29 2011-08-04 東芝三菱電機産業システム株式会社 Water-injection control device in rolling line, water-injection control method, water-injection control program
CN201752716U (en) * 2010-08-23 2011-03-02 秦皇岛首秦金属材料有限公司 Control cooling device of hot-rolling moderate-thickness plate
CN102327906A (en) * 2011-07-19 2012-01-25 东北大学 Cooling system after rolling with super-fast cooling technology
JP5972132B2 (en) * 2012-09-26 2016-08-17 新日鐵住金株式会社 nozzle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014032838A1 (en) * 2012-09-03 2014-03-06 Sms Siemag Ag Method and device for dynamically supplying coolant to a cooling device for cooling metal strip or other rolled stock

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2014124868A1 *

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US20180345343A1 (en) 2018-12-06
CN105163876B (en) 2017-12-15
US10076778B2 (en) 2018-09-18
WO2014124868A1 (en) 2014-08-21
EP2767353A1 (en) 2014-08-20
CN105163876A (en) 2015-12-16
US11040385B2 (en) 2021-06-22
US20150375284A1 (en) 2015-12-31
BR112015019431B1 (en) 2022-07-19
EP2956250B1 (en) 2022-12-07
BR112015019431A2 (en) 2017-07-18

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