EP2767352A1 - Kühlung eines Metallbandes mit positionsgeregelter Ventileinrichtung - Google Patents

Kühlung eines Metallbandes mit positionsgeregelter Ventileinrichtung Download PDF

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Publication number
EP2767352A1
EP2767352A1 EP13155151.7A EP13155151A EP2767352A1 EP 2767352 A1 EP2767352 A1 EP 2767352A1 EP 13155151 A EP13155151 A EP 13155151A EP 2767352 A1 EP2767352 A1 EP 2767352A1
Authority
EP
European Patent Office
Prior art keywords
coolant
valve
supply line
valve device
cooling
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.)
Withdrawn
Application number
EP13155151.7A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jian Dr. Chen
Sieglinde Ehgartner
Reinhard Dr. 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
Siemens VAI Metals Technologies GmbH Austria
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 Siemens VAI Metals Technologies GmbH Austria filed Critical Siemens VAI Metals Technologies GmbH Austria
Priority to EP13155151.7A priority Critical patent/EP2767352A1/de
Priority to PL14705729T priority patent/PL2956251T3/pl
Priority to CN201480009061.2A priority patent/CN105026064B/zh
Priority to EP14705729.3A priority patent/EP2956251B1/de
Priority to US14/768,076 priority patent/US10722929B2/en
Priority to PCT/EP2014/052385 priority patent/WO2014124867A1/de
Publication of EP2767352A1 publication Critical patent/EP2767352A1/de
Priority to US16/893,020 priority patent/US11084076B2/en
Withdrawn legal-status Critical Current

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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
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/667—Quenching devices for spray quenching

Definitions

  • the present invention further relates to a control device for a cooling device for cooling a metal strip by means of a liquid coolant, wherein the control device is designed as a software programmable control device and is programmed with such a computer program.
  • valve device is designed as a switching valve, the binary Switched between the states completely open and completely closed.
  • the valve characteristic includes a switch-on delay, a switch-off delay and an average coolant flow rate.
  • Power cooling - that is, the intensive cooling of metal strip - is a novel cooling method for cooling a metal strip during hot rolling or immediately thereafter. It serves to specifically adjust the microstructure and thus the mechanical properties of the end product.
  • so-called AHSS advanced high strength steels
  • Cooling requires that the coolant flow, i. the amount of coolant that is applied to the metal strip per unit time, accurate, reproducible and dynamically adjust.
  • this is done by arranging a flow meter in the supply line to the loading device and controlling the flow rate by means of the valve device.
  • this approach has several disadvantages.
  • an overshoot often occurs in practice when setting a new setpoint.
  • Even a calming phase until the new set point is kept stable is often relatively long.
  • flow meters are relatively expensive.
  • the object of the present invention is to provide ways by which a flexible and reliable cooling of the metal strip can be achieved in a simple and cost-effective manner.
  • the front state of the coolant may be determined as needed.
  • the forward state of the coolant may include its temperature and / or its chemical composition.
  • the front state of the coolant (at least) comprises a front supply line pressure, which is applied to the coolant in the supply line in front of the valve device.
  • the rear condition of the coolant may be determined as needed, similar to the front condition of the coolant.
  • the rearward state of the coolant preferably comprises (at least) a rear supply line pressure, which is applied to the coolant in the supply line between the valve device and the loading device or in the loading device.
  • the present invention is also applicable in principle to normal cooling devices in which a front supply line pressure, which the coolant has in the supply line in front of the valve device, is relatively low.
  • a front supply line pressure which the coolant has in the supply line in front of the valve device, is relatively low.
  • the front feed pressure is between 1.5 bar and 5.0 bar, in particular between 2.0 bar and 3.0 bar.
  • control device with the features of claim 10.
  • control device is programmed with a computer program according to the invention.
  • control device is designed or programmed according to the invention.
  • a treatment line for a metal strip 1 has at least one rolling stand 2-usually several rolling stands 2 in tandem-and a reeling device 3.
  • the metal strip 1 is rolled. Then, the metal strip 1 is reeled by means of the reeling device 3.
  • Cooling devices 4 may be arranged between the rolling stands 2 and / or between the last rolling stand 2 and the reeling device 3. By means of the cooling devices 4, the metal strip 1 is cooled with a liquid coolant 5.
  • the liquid coolant 5 is usually water or at least contains water as its main component.
  • the treatment line is controlled by a control device 6.
  • the control device 6 may comprise a plurality of subunits, each controlling a part of the treatment line. In the context of the present invention, it is important that the control device 6 controls at least one of the cooling devices 4. The following is therefore in connection with the FIGS. 2 and 3 only - representative of all cooling devices 4 - on one of the cooling devices 4 received.
  • the control device 6 is, as indicated by the abbreviation " ⁇ C", designed as a software programmable control device. It is programmed with a computer program 7.
  • the computer program 7 includes machine code 8, which is directly executable by the control device 6.
  • the processing of the machine code 8 by the control device 6 causes the internal functionality of the control device 6, which will be explained in more detail below in conjunction with the overall operation of the cooling device considered.
  • the cooling device 4 has an application device 9.
  • the application device 9 may be formed, for example, as an upper spray bar, by means of which the coolant 5 is applied to the metal strip 1 from above.
  • the impingement device 9 may be formed, for example, as a lower spray bar, by means of which the coolant 5 is applied from below onto the metal strip 1.
  • Other embodiments are possible.
  • the coolant 5 is supplied to the loading device 9 via a supply line 10 from a reservoir 11.
  • a pump 12 is arranged in the supply line 10.
  • the coolant 5 is acted upon by a pressure pV, hereinafter referred to as the front supply pressure pV.
  • a valve device 13 is further arranged in the supply line 10. The valve device 13 is arranged between the pump 12 and the loading device 9.
  • the valve device 13 is designed as a servo valve. By appropriately adjusting the valve device 13 to a respective opening position s is therefore - see FIG. 3 - A coolant flow F is adjustable, with which the metal strip 1 is acted upon by the loading device 9 per unit time. It is possible that the opening position s and thus also the coolant flow F corresponding to the solid line in FIG. 3 infinitely adjustable between 0 and a maximum flow. Alternatively, it is possible that the opening position s and thus also the coolant flow F corresponding to the small points in FIG. 3 are adjustable in several stages. The number of stages in this case is at least three.
  • the coolant flow F may be through the valve means 13 can be set to several values other than 0.
  • the characteristic K is based on a reference state ZR, that is, the characteristic K only applies when the coolant 5 in the supply line 10 in front of the valve device 13 has the reference state ZR.
  • the reference state ZR preferably comprises at least one reference pressure with which the coolant 5 is applied in the supply line 10 in front of the valve device 13.
  • the characteristic curve K represents the relevant part of a valve characteristic C of the valve device 13.
  • the valve characteristic C may additionally comprise further parameters of the valve device 13. Examples of such parameters are delay times that can occur when changing the opening position s (step response). However, this is of minor importance in the context of the present invention.
  • a front state detection device 14 is arranged in front of the valve device 13.
  • a front state ZV of the coolant 5 is detected, which actually has the coolant 5 in the supply line 10 in front of the valve device 13.
  • the front state ZV preferably comprises at least the front supply line pressure pV, with which the coolant 5 in the supply line 10 in front of the valve device 13 is (actually) acted upon.
  • the control device 6 are according to FIG. 2 a setpoint value F * for the coolant flow F and the front state ZV supplied. Furthermore, the control device 6, the valve characteristic C of the valve device 13 is known. The control device 6 is therefore able, on the basis of the desired value F * for the coolant flow F, the front state ZV of the coolant 5 and the valve characteristic C of the valve device 13 - in particular the characteristic K - a set value s * for the open position s of the valve device thirteenth to investigate.
  • the determined setpoint value s * for the open position s of the valve device 13 corresponds to the predetermined setpoint value F * for the coolant flow F.
  • the control device 6 adjusts the open position s of the valve device 13 in accordance with the determined setpoint value s *.
  • the control device 6 may alternatively control or regulate the valve device 13.
  • a rear state detection device 15 is arranged in the supply line 10 between the valve device 13 and the loading device 9.
  • a rear state detection device 15 By means of the rear state detection device 15, a rearward state ZH of the coolant 5 is detected, which the coolant 5 has in the supply line 10 between the valve device 13 and the loading device 9.
  • the rear state detection device 15 may be arranged in the loading device 9 itself. In this case, a rear state ZH of the coolant 5, which the coolant 5 has in the admission device 9 itself, is detected by means of the rear state detection device 15.
  • the rear state ZH is also supplied to the control device 6.
  • the control device 6 is thereby able to track the characteristic curve K of the valve device 13 on the basis of the front state ZV of the coolant 5, the rear state ZH of the coolant 5 and the open position s of the valve device 13.
  • the rear state ZH can in particular - analogous to the front state ZV - include a rear supply line pressure pH, with which the coolant 5 is applied in the supply line 10 between the valve device 13 and the loading device 9 or in the loading device 9 itself.
  • the characteristic K is preferably parameterized.
  • support points may be predetermined for which the associated coolant flow F is defined. Interpolation takes place between the interpolation points in this case. If, for an opening position s of the valve device 13, which lies between two support points, a deviation of the rear state ZH from an expected rear state, for example, the coolant flows F defined for the two support points can be weighted by the two support points in accordance with the distances of the opening position s be tracked. The weighting in this case is the stronger, the smaller the distance the opening position s of the respective support point is.
  • the front supply pressure pV, the coolant 5 has in the supply line 10 in front of the valve device 13, is relatively low, for example, at about 0.2 bar to 0.3 bar.
  • the front supply pressure pV is between 1.5 bar and 5.0 bar. In particular, it can be between 2.0 bar and 3.0 bar.
  • the present invention has many advantages.
  • the coolant flow F can be set accurately and reproducibly in a simple and cost-effective manner, wherein overshoot can be avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Control Of Metal Rolling (AREA)
EP13155151.7A 2013-02-14 2013-02-14 Kühlung eines Metallbandes mit positionsgeregelter Ventileinrichtung Withdrawn EP2767352A1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP13155151.7A EP2767352A1 (de) 2013-02-14 2013-02-14 Kühlung eines Metallbandes mit positionsgeregelter Ventileinrichtung
PL14705729T PL2956251T3 (pl) 2013-02-14 2014-02-07 Chłodzenie metalowej taśmy z urządzeniem zaworowym o regulowanym ustawieniu
CN201480009061.2A CN105026064B (zh) 2013-02-14 2014-02-07 使用位置控制的阀装置的金属带材冷却
EP14705729.3A EP2956251B1 (de) 2013-02-14 2014-02-07 Kühlung eines metallbandes mit positionsgeregelter ventileinrichtung
US14/768,076 US10722929B2 (en) 2013-02-14 2014-02-07 Cooling of a metal strip using a position-controlled valve device
PCT/EP2014/052385 WO2014124867A1 (de) 2013-02-14 2014-02-07 Kühlung eines metallbandes mit positionsgeregelter ventileinrichtung
US16/893,020 US11084076B2 (en) 2013-02-14 2020-06-04 Cooling of a metal strip using a position-controlled valve device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13155151.7A EP2767352A1 (de) 2013-02-14 2013-02-14 Kühlung eines Metallbandes mit positionsgeregelter Ventileinrichtung

Publications (1)

Publication Number Publication Date
EP2767352A1 true EP2767352A1 (de) 2014-08-20

Family

ID=47710001

Family Applications (2)

Application Number Title Priority Date Filing Date
EP13155151.7A Withdrawn EP2767352A1 (de) 2013-02-14 2013-02-14 Kühlung eines Metallbandes mit positionsgeregelter Ventileinrichtung
EP14705729.3A Active EP2956251B1 (de) 2013-02-14 2014-02-07 Kühlung eines metallbandes mit positionsgeregelter ventileinrichtung

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP14705729.3A Active EP2956251B1 (de) 2013-02-14 2014-02-07 Kühlung eines metallbandes mit positionsgeregelter ventileinrichtung

Country Status (5)

Country Link
US (2) US10722929B2 (zh)
EP (2) EP2767352A1 (zh)
CN (1) CN105026064B (zh)
PL (1) PL2956251T3 (zh)
WO (1) WO2014124867A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3623068A1 (de) * 2018-09-12 2020-03-18 Primetals Technologies Germany GmbH Aufbringeinrichtungen von kühlstrecken mit zweitem anschluss

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3495056B1 (de) 2017-12-11 2020-09-16 Primetals Technologies Austria GmbH Verbesserte steuerung der wasserwirtschaft einer kühlstrecke
DE102018219276A1 (de) 2018-03-12 2019-09-12 Sms Group Gmbh Kühlgruppe einer Laminarkühlvorrichtung
EP3755820A1 (en) * 2018-06-13 2020-12-30 Novelis, Inc. Systems and methods for quenching a metal strip after rolling
EP3896286A1 (de) 2020-04-14 2021-10-20 Primetals Technologies Germany GmbH Betrieb einer pumpe einer kühleinrichtung ohne verwertung eines mehrdimensionalen, gemessenen kennlinienfeldes
EP3895819B1 (de) 2020-04-14 2023-06-07 Primetals Technologies Germany GmbH Betrieb einer kühleinrichtung mit einem minimalen arbeitsdruck
DE102022128358A1 (de) 2022-10-26 2024-05-02 Sms Group Gmbh Kühlmodul, Kühlgruppe, Kühlsystem, Verfahren, warmgewalztes metallisches bandförmiges Produkt und Verwendung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD213853A1 (de) * 1983-02-28 1984-09-26 Thaelmann Schwermaschbau Veb Regeleinrichtung der wasserzufuhr in wasserkuehlstrecken
US20080314367A1 (en) * 2007-06-22 2008-12-25 Goulette David A Control system using pulse density modulation
DE102007046279A1 (de) 2007-09-27 2009-04-09 Siemens Ag Betriebsverfahren für eine Kühlstrecke mit zentralisierter Erfassung von Ventilcharakteristiken und hiermit korrespondierende Gegenstände
EP2108465A1 (en) * 2008-04-07 2009-10-14 Siemens VAI Metals Technologies Ltd. Method and apparatus for controlled cooling

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
DE213853C (zh)
US3589160A (en) 1968-06-07 1971-06-29 Bethlehem Steel Corp Apparatus and method for controlling accelerated cooling of hot rolled strip material
US4232853A (en) * 1977-07-04 1980-11-11 Kawasaki Steel Corporation Steel stock cooling apparatus
CA2625062C (en) * 2005-11-11 2011-04-26 Jfe Steel Corporation Device and method for cooling hot strip
EP1938911A1 (en) * 2006-12-27 2008-07-02 VAI Industries (UK) Ltd. Apparatus and method for controlled cooling
FR2940979B1 (fr) * 2009-01-09 2011-02-11 Fives Stein Procede de refroidissement d'une bande metallique en defilement
WO2012011578A1 (ja) * 2010-07-22 2012-01-26 新日本製鐵株式会社 鋼板の冷却装置及び鋼板の冷却方法
EP2767353A1 (de) * 2013-02-15 2014-08-20 Siemens VAI Metals Technologies GmbH Kühlstrecke mit Power Cooling und Laminarkühlung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD213853A1 (de) * 1983-02-28 1984-09-26 Thaelmann Schwermaschbau Veb Regeleinrichtung der wasserzufuhr in wasserkuehlstrecken
US20080314367A1 (en) * 2007-06-22 2008-12-25 Goulette David A Control system using pulse density modulation
DE102007046279A1 (de) 2007-09-27 2009-04-09 Siemens Ag Betriebsverfahren für eine Kühlstrecke mit zentralisierter Erfassung von Ventilcharakteristiken und hiermit korrespondierende Gegenstände
EP2108465A1 (en) * 2008-04-07 2009-10-14 Siemens VAI Metals Technologies Ltd. Method and apparatus for controlled cooling

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3623068A1 (de) * 2018-09-12 2020-03-18 Primetals Technologies Germany GmbH Aufbringeinrichtungen von kühlstrecken mit zweitem anschluss
WO2020052854A1 (de) * 2018-09-12 2020-03-19 Primetals Technologies Germany Gmbh Aufbringeinrichtungen von kühlstrecken mit zweitem anschluss
CN112654441A (zh) * 2018-09-12 2021-04-13 首要金属科技德国有限责任公司 具有第二端子的冷却段的施加装置
CN112654441B (zh) * 2018-09-12 2023-03-10 首要金属科技德国有限责任公司 具有第二端子的冷却段的施加装置
US11779976B2 (en) 2018-09-12 2023-10-10 Primetals Technologies Germany Gmbh Application devices for cooling sections, having a second connection

Also Published As

Publication number Publication date
US20160008861A1 (en) 2016-01-14
US11084076B2 (en) 2021-08-10
EP2956251A1 (de) 2015-12-23
WO2014124867A1 (de) 2014-08-21
CN105026064A (zh) 2015-11-04
CN105026064B (zh) 2017-07-18
US20200298295A1 (en) 2020-09-24
US10722929B2 (en) 2020-07-28
PL2956251T3 (pl) 2017-09-29
EP2956251B1 (de) 2017-03-29

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