EP1907145B1 - Coolant applying method - Google Patents

Coolant applying method Download PDF

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Publication number
EP1907145B1
EP1907145B1 EP06777383A EP06777383A EP1907145B1 EP 1907145 B1 EP1907145 B1 EP 1907145B1 EP 06777383 A EP06777383 A EP 06777383A EP 06777383 A EP06777383 A EP 06777383A EP 1907145 B1 EP1907145 B1 EP 1907145B1
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EP
European Patent Office
Prior art keywords
cooling
coolant
roll
zones
roll stand
Prior art date
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Active
Application number
EP06777383A
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German (de)
French (fr)
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EP1907145A1 (en
Inventor
Andreas Berghs
Robert Simbeck
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Siemens AG En Sms Siemag AG
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Siemens AG
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Priority to PL06777383T priority Critical patent/PL1907145T3/en
Publication of EP1907145A1 publication Critical patent/EP1907145A1/en
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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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
    • 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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
    • B21B37/32—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by cooling, heating or lubricating the rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0035—Forging or pressing devices as units
    • B21B15/005—Lubricating, cooling or heating means
    • 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
    • B21B2001/221—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 by cold-rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B2003/001—Aluminium or its alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/06—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring tension or compression
    • 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
    • B21B45/0239—Lubricating
    • B21B45/0245—Lubricating devices
    • B21B45/0248—Lubricating devices using liquid lubricants, e.g. for sections, for tubes
    • B21B45/0251—Lubricating devices using liquid lubricants, e.g. for sections, for tubes for strips, sheets, or plates

Definitions

  • the invention relates to a method for applying a coolant to a rolling stock and / or to at least one work roll of a roll stand having a roll gap, wherein the rolled stock is rolled with the aid of the roll stand. Furthermore, the invention also relates to a rolling stand.
  • coolant usually oil or oil emulsion
  • oil or oil emulsion is used to cool the rolling stock and / or the rolls of a roll stand.
  • the rolling gap of the roll stand is lubricated by oil or oil emulsion.
  • the coolant can thus even or in extreme cases even serve exclusively as a lubricant.
  • D3 discloses spray nozzles with which a cooling liquid is applied to the upper work roll of a rolling stand.
  • the object of the invention is to apply a coolant to a rolling stock and / or to at least one work roll of a roll stand such that the most constant and stable cooling or lubricating conditions are ensured.
  • This object is achieved by a method for applying a coolant to a rolling stock and / or at least one work roll of a roll stand having a roll gap, wherein the rolling stock is rolled with the aid of the roll stand, and wherein the amount of coolant to be applied as a function of effective in the roll gap Performance is determined, wherein the effective power in the nip of the performance of the at least one drive of the rolling mill, plus the output in the outlet run of the roll stand, less the power in the inlet run of the roll stand composed. In this way disturbing thickness influences are minimized and excessive belt or roller temperatures are avoided.
  • the amount of coolant to be applied can be determined in proportion to the effective power in the nip.
  • the flatness of the rolling stock can be determined over a plurality of zones in the width direction, wherein the coolant is applied as a function of the determined flatness distribution distributed over the plurality of zones on the rolling stock and / or on the at least one work roll.
  • the coolant can be applied to the rolling stock with the aid of cooling nozzles.
  • FIG. 1 shows a rolling mill 2 with work rolls 3 and back-up rolls 4 for rolling a rolling stock 1.
  • the rolling stock 1 is preferably band-shaped and as a metal strip, for example, steel strip or light metal strip, for example made of aluminum.
  • the rolling stock 1 passes through the roll stand 2 in the longitudinal direction x.
  • the rolling stand 2 has a plurality of work rolls 3, which extend in the width direction y and are arranged substantially one above the other. Between the work rolls 3 is the nip 9, which passes through the rolling stock 1 during the rolling process.
  • cooling nozzles 5 are arranged, which are directed to one or more of the work rolls 3 and / or on the rolling stock 1.
  • the cooling nozzles 5 are used to apply coolant 8 to the rolling stock 1 and / or to the work rolls 3. Especially during cold rolling, the rolls 3, 4 and the rolling stock 1 can be cooled with so-called rolling oil as the coolant 8.
  • the rolling oil serves at the same time to lubricate the nip 9.
  • the coolant 8 may have an oil emulsion.
  • the coolant 8 may at least partially consist of water.
  • the rolling stand 2 and the rolling stock 1 therein are supplied by at least one drive not shown in the drawing energy. Much of this Energy is dissipated with the moving, heated rolling stock 1 and via the coolant 8, in particular the rolling oil.
  • the distribution of the discharged energy to the rolling stock 1 and the coolant 8 depends on various circumstances, such as the type of material to be rolled, material hardness, deformation resistance and speed of the rolling stock 1 from.
  • the cooling nozzles 5 are preferably on one or more beams 10 (see FIG. 2 , in FIG. 1 not shown in detail) arranged.
  • a roll stand 2 On a roll stand 2 are preferably per work roll 3, one to three bars 10 for cooling and optionally additionally provided a further beam 10 for lubrication.
  • a flatness measuring system 6 is arranged, which is coupled to the rolling stand 2 via a control computer 7.
  • FIG. 2 shows a arranged above the rolling stock 1 beam 10 of a cooling system for cooling the rolling stock 1 and / or the rollers 3, 4.
  • the rolling stock is shown in section.
  • On the bar 10 a plurality of cooling nozzles 5 are arranged, at least partially to the rolling stock 1 and / or the one in FIG. 2 Work roll 3 not shown are directed.
  • the cooling nozzles 5 are each associated with zones 11, these zones 11 may have different widths b 1 and b 2 .
  • small cooling zones are shown with a width b 2 and large cooling zones with a width b 1 , wherein the width b 1 is twice as large as the width b. 2
  • In the in FIG. 2 example shown is on a bar 10 per zone 11 exactly one cooling nozzle 5 is provided.
  • arrangement can be easily transferred in reverse to a arranged below the rolling stock 1 cooling system with cooling nozzles 5 and at least one beam 10.
  • FIG. 3 shows the distribution of the zones 11 relative to the rolling stock 1.
  • the rolling stock 1 is shown in plan view.
  • the necessary total amount of cooling for cooling in the rolling stand 2 is determined as a function of the effective power in the nip 9.
  • the necessary total amount of cooling can be determined proportional to the effective power in the nip 9.
  • the effective power in the nip 9 is composed of the power of the at least one drive of the roll stand 2, plus the output in the run-out of the roll stand 2, minus the power in the intake run of the roll stand 2.
  • the resulting performance in the nip 9 is in work of deformation and thus in Heat converted.
  • the effective power in the nip 9 is determined in the speed control of the rolling stock to be rolled 1 effective drives.
  • the rolling stock 1 which passes through a rolling train, the drives of several rolling stands 2 are effective.
  • the total amount of cooling is preferably limited to a minimum value at a low rolling speed.
  • the total cooling quantity is limited to a maximum value at high rolling speeds.
  • cooling nozzles 5 are each associated with zones 11, wherein each zone 11 at least one, preferably exactly one cooling nozzle 5 is provided.
  • a total quantity regulator of the multi-zone cooling control is superimposed, which ensures that the required total cooling quantity is set by increasing or decreasing the amount of cooling in the individual zones 11 of the cooling. This ensures that the required total amount of cooling is kept as constant as possible under constant conditions. In this way, it is avoided that the rolling stock 1 and the rolls 3, 4, in particular the working rolls 3, heat excessively.
  • the adjustment of the cooling amount for each individual zone 11 of the cooling takes place by determining the on-off-time ratio of the cooling valve of the corresponding cooling nozzle 5 or by a proportional valve.
  • the total cooling quantity CS resulting from the flatness measurement or from the flatness control is compared with the predetermined total cooling quantity VS.
  • the predetermined total amount of cooling VS is preferably determined as described above as an example depending on the effective power in the nip. From the resulting total cooling amount difference SD becomes calculated additional cooling component Ca for the individual cooling nozzles 5 and zones 11. This takes into account that a minimum or maximum cooling amount per zone 11 can not be fallen below or exceeded, and that different zone widths b 1 , b 2 (see FIG. 2 ) condition different coolant flow rates. A distinction is made between missing quantities of cooling components mk with respect to zones 11 of large width b 1 and excess quantities of cooling components mg relative to zones of large width b 1 .
  • the excess cooling proportions mg based on zones 11 of large width b 1 are subtracted from the total cooling amount fractions mz relative to zones 11 of large width b 1 in order to determine the additional cooling amount fraction Ca for the individual cooling nozzles 5.
  • This additional amount of cooling Ca is now not directly on the cooling volume distribution C Z added, but converted into a control deviation r and added to the controller output of each zone 11.
  • the comparison of the total amount of cooling CS with the predetermined total amount of cooling VS and the resulting correction of the controller output is repeated until the difference between the total amount of cooling CS and the predetermined total amount of cooling VS falls below a predefinable value.
  • the invention relates to a method for applying a coolant 8 to a rolling stock 1 and / or at least one roller 3, 4 of a roll stand 2 with a nip 9.
  • a total amount of cooling to be applied is first determined as a function of the effective power in the nip 9.
  • cooling quantities for a plurality of zones 11 are determined as a function of the deviation of the flatness distribution determined by means of a flatness measuring system 6, wherein a cooling quantity difference is determined by comparing the sum of the thus determined cooling quantities with the previously determined total cooling quantity, on the basis of which additional cooling quantity components for the zones 11 taking into account upper - And lower limits of the cooling quantities for the zones 11 are determined.

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Abstract

Applying coolant to rolled stock (1) and/or to working rolls (3) in a roll stand (2) comprises applying the coolant in an amount depending on the work done in the gap (9) between the rolls. An independent claim is also included for roll stand with a cooling system (5), a flatness measurement system (6) and a control computer (7) that is designed to perform the above process and is accordingly coupled to the cooling system and the flatness measurement system.

Description

Die Erfindung betrifft ein Verfahren zum Aufbringen eines Kühlmittels auf ein Walzgut und/oder auf mindestens eine Arbeitswalze eines Walzgerüsts mit einem Walzspalt, wobei das Walzgut unter Zuhilfenahme des Walzgerüsts gewalzt wird. Weiterhin betrifft die Erfindung auch ein Walzgerüst.The invention relates to a method for applying a coolant to a rolling stock and / or to at least one work roll of a roll stand having a roll gap, wherein the rolled stock is rolled with the aid of the roll stand. Furthermore, the invention also relates to a rolling stand.

Der Einsatz von Kühl- und Schmiermittel beim Walzen von Walzgut ist beispielsweise bekannt aus " Grundlagen des Bandwalzens", Karlheinz Weber, VEB Deutscher Verlag für Grundstoffindustrie, Leipzig, 1973, Seiten 210 bis 215 . Insbesondere wird hier der Einsatz von Ölen oder Ölemulsionen, die auf ein Walzgut oder die Walzen eines Walzgerüstes einer Kaltwalzstrasse aufgebracht werden, beschrieben.The use of coolants and lubricants during rolling of rolling stock is known, for example, from " Basics of strip rolling ", Karlheinz Weber, VEB German publishing house for basic industry, Leipzig, 1973, pages 210 to 215 , In particular, the use of oils or oil emulsions which are applied to a rolling stock or the rolls of a roll stand of a cold rolling mill is described here.

Das Aufbringen von Kühlmittel, in der Regel Öl bzw. Ölemulsion, dient zum Kühlen des Walzguts und/oder der Walzen eines Walzgerüsts. Gleichzeitig wird durch Öl bzw. Ölemulsion auch der Walzspalt des Walzgerüsts geschmiert. Das Kühlmittel kann somit auch bzw. im Extremfall sogar ausschließlich als Schmiermittel dienen.The application of coolant, usually oil or oil emulsion, is used to cool the rolling stock and / or the rolls of a roll stand. At the same time, the rolling gap of the roll stand is lubricated by oil or oil emulsion. The coolant can thus even or in extreme cases even serve exclusively as a lubricant.

Aus der Offenlegungsschrift DE 29 27 769 sind ein Verfahren und eine Anlage zur Planwalzung von Bandmaterial aus Stahl und Nichteisenmetall bekannt. Dabei werden die Arbeitswalzen von Walzgerüsten durch eine Vielzahl von Spritzdüsen mit Kühlflüssigkeit bespritzt und dabei die Spritzzonen und/oder Spritzmengen geregelt bzw. gesteuert.From the publication DE 29 27 769 are known a method and a plant for flat rolling of strip material made of steel and non-ferrous metal. The work rolls are sprayed from rolling stands by a plurality of spray nozzles with cooling liquid while the spray zones and / or spray rates regulated or controlled.

Aus der europäischen Patentanmeldung EP 0 908 248 A2 sind eine Vorrichtung und ein Verfahren zur Beeinflussung der Reibungsverhältnisse zwischen einer oberen und einer unteren Walze eines Walzgerüstes bekannt. An der Einlaufseite des Walzgerüstes ist eine Sprüheinrichtung zum Sprühen einer definierten Menge Flüssigkeit in Richtung des Walzspaltes und eine Regeleinrichtung zur mengenmäßigen Bestimmung und Abgabe dieser Flüssigkeit angeordnet.From the European patent application EP 0 908 248 A2 For example, an apparatus and a method for influencing the friction conditions between an upper and a lower roll of a roll stand are known. On the inlet side of the rolling stand is a spraying device for spraying a defined amount of liquid in the direction of the nip and a control device for quantitative determination and delivery of this liquid arranged.

Aus der Patentschrift US 3,802,231 ist ein Verfahren zur lokalisierten Bandprofilkontrolle bekannt. Ferner offenbart D3 Sprühdüsen, mit welchen eine Kühlflüssigkeit auf die obere Arbeitswalze eines Walzgerüstes aufgebracht wird.From the patent US 3,802,231 a method for localized strip profile control is known. Further, D3 discloses spray nozzles with which a cooling liquid is applied to the upper work roll of a rolling stand.

Aus der japanischen Offenlegungsschrift JP 02197309 ist ein Verfahren zur Steuerung des Bandprofils mittels eines Kühlmittels bekannt. Dazu wird ein Kühlmittel mittels Sprühdüsen auf ein Zielobjekt aufgebracht.From the Japanese patent application JP 02197309 For example, a method for controlling the strip profile by means of a coolant is known. For this purpose, a coolant is applied to a target object by means of spray nozzles.

Aufgabe der Erfindung ist es, ein Kühlmittel auf ein Walzgut und/oder auf mindestens eine Arbeitswalze eines Walzgerüsts derart aufzubringen, dass möglichst konstante und stabile Kühl- bzw. Schmierbedingungen gewährleistet sind.The object of the invention is to apply a coolant to a rolling stock and / or to at least one work roll of a roll stand such that the most constant and stable cooling or lubricating conditions are ensured.

Diese Aufgabe wird gelöst durch ein Verfahren zum Aufbringen eines Kühlmittels auf ein Walzgut und/oder auf mindestens eine Arbeitswalze eines Walzgerüsts mit einem Walzspalt, wobei das Walzgut unter Zuhilfenahme des Walzgerüsts gewalzt wird, und wobei die Menge des aufzubringenden Kühlmittels in Abhängigkeit der im Walzspalt wirksamen Leistung ermittelt wird, wobei sich die im Walzspalt wirksame Leistung aus der Leistung des mindestens einen Antriebs des Walzgerüsts, zuzüglich der Leistung im Auslaufzug des Walzgerüsts, abzüglich der Leistung im Einlaufzug des Walzgerüsts zusammensetzt. Derart werden störende Dickeneinflüsse minimiert und zu hohe Band- bzw. Walzentemperaturen vermieden.This object is achieved by a method for applying a coolant to a rolling stock and / or at least one work roll of a roll stand having a roll gap, wherein the rolling stock is rolled with the aid of the roll stand, and wherein the amount of coolant to be applied as a function of effective in the roll gap Performance is determined, wherein the effective power in the nip of the performance of the at least one drive of the rolling mill, plus the output in the outlet run of the roll stand, less the power in the inlet run of the roll stand composed. In this way disturbing thickness influences are minimized and excessive belt or roller temperatures are avoided.

Vorzugsweise kann die Menge des aufzubringenden Kühlmittels proportional zu der im Walzspalt wirksamen Leistung ermittelt werden.Preferably, the amount of coolant to be applied can be determined in proportion to the effective power in the nip.

Mit Vorteil kann die Planheit des Walzguts über mehrere Zonen in Breitenrichtung hinweg ermittelt werden, wobei das Kühlmittel in Abhängigkeit der ermittelten Planheitsverteilung über die mehreren Zonen verteilt auf das Walzgut und/oder auf die mindestens einer Arbeitswalze aufgebracht wird.Advantageously, the flatness of the rolling stock can be determined over a plurality of zones in the width direction, wherein the coolant is applied as a function of the determined flatness distribution distributed over the plurality of zones on the rolling stock and / or on the at least one work roll.

Zweckmäßigerweise kann das Verfahren mit folgenden Schritten ausgeführt werden:

  1. i) Bestimmen einer aufzubringenden Gesamtkühlmenge in Abhängigkeit der im Walzspalt wirksamen Leistung,
  2. ii) bestimmen von Kühlmengen für mehrere über die Breitenrichtung hinweg angeordneten Zonen in Abhängigkeit einer Regelabweichung der Planheitverteilung,
  3. iii) ermitteln einer Kühlmengendifferenz durch Vergleich der Summe der Kühlmengen gemäß Schritt ii) mit der Gesamtkühlmenge gemäß Schritt i),
  4. iv) ermitteln von Zusatzkühlmengenanteilen für die Zonen auf Grundlage der Kühlmengendifferenz gemäß Schritt III) unter Berücksichtigung von Ober- und Untergrenze der Kühlmengen für die Zonen,
  5. v) wiederholen der Schritte ii) bis iv) bis die Kühlmengendifferenz gemäß Schritt iii) einen vorgebbaren Wert unterschreitet.
Conveniently, the method can be carried out with the following steps:
  1. i) determining a total amount of cooling to be applied as a function of the effective power in the nip,
  2. ii) determine cooling quantities for a plurality of zones arranged across the width direction as a function of a control deviation of the flatness distribution,
  3. iii) determining a cooling-quantity difference by comparing the sum of the cooling quantities according to step ii) with the total cooling quantity according to step i),
  4. iv) determining additional cooling flow rates for the zones based on the cooling flow difference according to step III) taking into account the upper and lower limits of the cooling volumes for the zones,
  5. v) repeating steps ii) to iv) until the cooling quantity difference according to step iii) falls below a predefinable value.

Mit Vorteil kann das Kühlmittel unter Zuhilfenahme von Kühldüsen auf das Walzgut aufgebracht werden.Advantageously, the coolant can be applied to the rolling stock with the aid of cooling nozzles.

Die der Erfindung zugrunde liegende Aufgabe wird auch gelöst, durch den Gegenstand der Patentansprüche 7 bis 10.The object underlying the invention is also achieved by the subject matter of the claims 7 to 10.

Weitere Vorteile und Einzelheiten der Erfindung werden nachfolgend beispielhaft anhand der Zeichnungen erläutert. Es zeigen:

FIG 1
ein Walzgerüst mit Planheitsmesssystem und Steuerrechner,
FIG 2
ein Beispiel für ein Kühlsystem mit mehreren in Breitenrichtung angeordneten Zonen,
FIG 3
ein Beispiel für die Anordnung der Zonen mit Bezug auf das Walzgut,
FIG 4
schematisch den Ablauf des Verfahrens zum Bestimmen der Kühlmengen für die einzelnen Zonen.
Further advantages and details of the invention are explained below by way of example with reference to the drawings. Show it:
FIG. 1
a rolling stand with flatness measuring system and control computer,
FIG. 2
an example of a cooling system with several zones arranged in the width direction,
FIG. 3
an example of the arrangement of the zones with respect to the rolling stock,
FIG. 4
schematically the flow of the method for determining the cooling amounts for the individual zones.

FIG 1 zeigt ein Walzgerüst 2 mit Arbeitswalzen 3 und Stützwalzen 4 zum Walzen eines Walzguts 1. Das Walzgut 1 ist vorzugsweise bandförmig und als Metallband beispielsweise Stahlband oder Leichtmetallband, z.B. aus Aluminium, ausgebildet. Im gezeigten Beispiel durchläuft das Walzgut 1 das Walzgerüst 2 in Längsrichtung x. Das Walzgerüst 2 weist mehrere Arbeitswalzen 3 auf, die sich in Breitenrichtung y erstrecken und im Wesentlichen übereinander angeordnet sind. Zwischen den Arbeitswalzen 3 befindet sich der Walzspalt 9, den das Walzgut 1 während des Walzvorgangs durchläuft. In Breitenrichtung y sind Kühldüsen 5 angeordnet, die auf eine oder mehrere der Arbeitswalzen 3 und/oder auf das Walzgut 1 gerichtet sind. Die Kühldüsen 5 dienen zum Aufbringen von Kühlmittel 8 auf das Walzgut 1 und/oder auf die Arbeitswalzen 3. Insbesondere beim Kaltwalzen können die Walzen 3, 4 und das Walzgut 1 mit sogenanntem Walzöl als Kühlmittel 8 gekühlt werden. Das Walzöl dient dabei gleichzeitig dem Schmieren des Walzspaltes 9. Das Kühlmittel 8 kann eine Ölemulsion aufweisen. Das Kühlmittel 8 kann zumindest teilweise aus Wasser bestehen. FIG. 1 shows a rolling mill 2 with work rolls 3 and back-up rolls 4 for rolling a rolling stock 1. The rolling stock 1 is preferably band-shaped and as a metal strip, for example, steel strip or light metal strip, for example made of aluminum. In the example shown, the rolling stock 1 passes through the roll stand 2 in the longitudinal direction x. The rolling stand 2 has a plurality of work rolls 3, which extend in the width direction y and are arranged substantially one above the other. Between the work rolls 3 is the nip 9, which passes through the rolling stock 1 during the rolling process. In the width direction y cooling nozzles 5 are arranged, which are directed to one or more of the work rolls 3 and / or on the rolling stock 1. The cooling nozzles 5 are used to apply coolant 8 to the rolling stock 1 and / or to the work rolls 3. Especially during cold rolling, the rolls 3, 4 and the rolling stock 1 can be cooled with so-called rolling oil as the coolant 8. The rolling oil serves at the same time to lubricate the nip 9. The coolant 8 may have an oil emulsion. The coolant 8 may at least partially consist of water.

Dem Walzgerüst 2 und dem darin befindlichen Walzgut 1 werden durch mindestens einen in der Zeichnung nicht näher dargestellten Antrieb Energie zugeführt. Ein Großteil dieser Energie wird mit dem sich bewegenden, erwärmten Walzgut 1 und über das Kühlmittel 8, insbesondere das Walzöl, abgeführt. Die Aufteilung der abgeführten Energie auf das Walzgut 1 und das Kühlmittel 8 hängt von verschiedenen Umständen, wie beispielsweise Art des zu walzenden Materials, Materialhärte, Verformungswiderstand und Geschwindigkeit des Walzguts 1 ab.The rolling stand 2 and the rolling stock 1 therein are supplied by at least one drive not shown in the drawing energy. Much of this Energy is dissipated with the moving, heated rolling stock 1 and via the coolant 8, in particular the rolling oil. The distribution of the discharged energy to the rolling stock 1 and the coolant 8 depends on various circumstances, such as the type of material to be rolled, material hardness, deformation resistance and speed of the rolling stock 1 from.

Die Kühldüsen 5 sind vorzugsweise an einem oder mehreren Balken 10 (siehe FIG 2, in FIG 1 nicht näher dargestellt) angeordnet.The cooling nozzles 5 are preferably on one or more beams 10 (see FIG. 2 , in FIG. 1 not shown in detail) arranged.

An einem Walzgerüst 2 sind vorzugsweise je Arbeitswalze 3, ein bis drei Balken 10 zur Kühlung und gegebenenfalls zusätzlich ein weiterer Balken 10 zur Schmierung vorgesehen.On a roll stand 2 are preferably per work roll 3, one to three bars 10 for cooling and optionally additionally provided a further beam 10 for lubrication.

In Bewegungsrichtung des Walzguts 1, im gezeigten Beispiel also in Längsrichtung x, dem Walzgerüst 2 nachgeordnet, also auf der Auslaufseite des Walzgerüsts 2 ist ein Planheitsmesssystem 6 angeordnet, welches über einen Steuerrechner 7 mit dem Walzgerüst 2 gekoppelt ist.In the direction of movement of the rolling stock 1, in the example shown, ie in the longitudinal direction x, downstream of the rolling stand 2, ie on the outlet side of the rolling stand 2, a flatness measuring system 6 is arranged, which is coupled to the rolling stand 2 via a control computer 7.

FIG 2 zeigt einen über dem Walzgut 1 angeordneten Balken 10 eines Kühlsystems zur Kühlung des Walzguts 1 und/oder der Walzen 3, 4. In der Zeichnung ist das Walzgut im Schnitt dargestellt. An dem Balken 10 sind mehrere Kühldüsen 5 angeordnet, die zumindest teilweise auf das Walzgut 1 und/oder die eine in FIG 2 nicht näher dargestellte Arbeitswalze 3 gerichtet sind. Die Kühldüsen 5 sind jeweils Zonen 11 zugeordnet, wobei diese Zonen 11 unterschiedliche Breiten b1 bzw. b2 aufweisen können. In FIG 2 gezeigten Beispiel sind kleine Kühlzonen mit einer Breite b2 und große Kühlzonen mit einer Breite b1 dargestellt, wobei die Breite b1 doppelt so groß ist wie die Breite b2. In dem in FIG 2 dargestellten Beispiel ist an einem Balken 10 je Zone 11 genau eine Kühldüse 5 vorgesehen. Die in FIG 2 gezeigte Anordnung lässt sich ohne weiteres in Umkehr auf ein unterhalb des Walzguts 1 angeordnetes Kühlsystem mit Kühldüsen 5 und mit mindestens einem Balken 10 übertragen. FIG. 2 shows a arranged above the rolling stock 1 beam 10 of a cooling system for cooling the rolling stock 1 and / or the rollers 3, 4. In the drawing, the rolling stock is shown in section. On the bar 10, a plurality of cooling nozzles 5 are arranged, at least partially to the rolling stock 1 and / or the one in FIG. 2 Work roll 3 not shown are directed. The cooling nozzles 5 are each associated with zones 11, these zones 11 may have different widths b 1 and b 2 . In FIG. 2 shown example small cooling zones are shown with a width b 2 and large cooling zones with a width b 1 , wherein the width b 1 is twice as large as the width b. 2 In the in FIG. 2 example shown is on a bar 10 per zone 11 exactly one cooling nozzle 5 is provided. In the FIG. 2 shown arrangement can be easily transferred in reverse to a arranged below the rolling stock 1 cooling system with cooling nozzles 5 and at least one beam 10.

FIG 3 zeigt die Verteilung der Zonen 11 bezogen auf das Walzgut 1. In der Zeichnung ist das Walzgut 1 in Draufsicht dargestellt. FIG. 3 shows the distribution of the zones 11 relative to the rolling stock 1. In the drawing, the rolling stock 1 is shown in plan view.

In beispielhafter Ausgestaltung der Erfindung wird die notwendige Gesamtkühlmenge zur Kühlung im Walzgerüst 2 in Abhängigkeit von der im Walzspalt 9 wirksamen Leistung ermittelt. Vorzugsweise kann die notwendige Gesamtkühlmenge proportional zur im Walzspalt 9 wirksamen Leistung ermittelt werden. Die im Walzspalt 9 wirksame Leistung setzt sich zusammen aus der Leistung des mindestens einen Antriebs des Walzgerüsts 2, zuzüglich der Leistung im Auslaufzug des Walzgerüsts 2, abzüglich der Leistung im Einlaufzug des Walzgerüsts 2. Die resultierende Leistung im Walzspalt 9 wird in Verformungsarbeit und damit in Wärme umgesetzt.In an exemplary embodiment of the invention, the necessary total amount of cooling for cooling in the rolling stand 2 is determined as a function of the effective power in the nip 9. Preferably, the necessary total amount of cooling can be determined proportional to the effective power in the nip 9. The effective power in the nip 9 is composed of the power of the at least one drive of the roll stand 2, plus the output in the run-out of the roll stand 2, minus the power in the intake run of the roll stand 2. The resulting performance in the nip 9 is in work of deformation and thus in Heat converted.

Die im Walzspalt 9 wirksame Leistung wird in den Drehzahlregelungen der am zu walzenden Walzgut 1 wirksamen Antriebe, ermittelt. In der Regel sind am Walzgut 1, das eine Walzstraße durchläuft, die Antriebe mehrerer Walzgerüste 2 wirksam.The effective power in the nip 9 is determined in the speed control of the rolling stock to be rolled 1 effective drives. As a rule, the rolling stock 1, which passes through a rolling train, the drives of several rolling stands 2 are effective.

Die Gesamtkühlmenge wird bei kleiner Walzgeschwindigkeit vorzugsweise auf einen Mindestwert begrenzt. Mit Vorteil erfolgt analog eine Begrenzung der Gesamtkühlmenge auf einen Maximalwert bei großen Walzgeschwindigkeiten.The total amount of cooling is preferably limited to a minimum value at a low rolling speed. Advantageously, the total cooling quantity is limited to a maximum value at high rolling speeds.

Wie in den Figuren 1 und 2 angedeutet, wird die erforderliche Kühlmenge über Kühldüsen 5 in Form von Kühlmittel 8 auf die Walzen 3, 4, vorzugsweise die Arbeitswalzen 3 und gegebenenfalls auf das Walzgut 1 aufgebracht. Kühldüsen 5 sind jeweils Zonen 11 zugeordnet, wobei je Zone 11 mindestens eine, vorzugsweise genau eine Kühldüse 5 vorgesehen ist.As in the FIGS. 1 and 2 indicated, the required amount of cooling via cooling nozzles 5 in the form of coolant 8 is applied to the rollers 3, 4, preferably the work rolls 3 and optionally to the rolling stock 1. Cooling nozzles 5 are each associated with zones 11, wherein each zone 11 at least one, preferably exactly one cooling nozzle 5 is provided.

Zur exakten Einstellung der in Abhängigkeit von der im Walzspalt 9 wirksamen Leistung ermittelten Gesamtkühlmenge, wird ein Gesamtmengenregler der Vielzonen-Kühlungsregelung überlagert, der dafür sorgt, dass die erforderliche Gesamtkühlmenge durch Erhöhen bzw. Vermindern der Kühlmenge in den einzelnen Zonen 11 der Kühlung eingestellt wird. Dabei wird sichergestellt, dass die erforderliche Gesamtkühlmenge bei konstanten Bedingungen möglichst konstant gehalten wird. Derart wird vermieden, dass sich das Walzgut 1 und die Walzen 3, 4, insbesondere die Arbeitswalzen 3 übermäßig erwärmen. Die Einstellung der Kühlmenge für jede einzelne Zone 11 der Kühlung erfolgt durch Bestimmung des Ein-Ausschalt-Zeitverhältnisses des Kühlventils der entsprechenden Kühldüse 5 oder durch ein Proportionalventil.For exact adjustment of the total cooling quantity determined as a function of the effective power in the nip 9, a total quantity regulator of the multi-zone cooling control is superimposed, which ensures that the required total cooling quantity is set by increasing or decreasing the amount of cooling in the individual zones 11 of the cooling. This ensures that the required total amount of cooling is kept as constant as possible under constant conditions. In this way, it is avoided that the rolling stock 1 and the rolls 3, 4, in particular the working rolls 3, heat excessively. The adjustment of the cooling amount for each individual zone 11 of the cooling takes place by determining the on-off-time ratio of the cooling valve of the corresponding cooling nozzle 5 or by a proportional valve.

Wie in FIG 4 schematisch dargestellt, wird zunächst aus der aktuellen Regelabweichung RDa je Zone 11 eine geglättete Re-gelabweichung RDg je Zone 11 gebildet und jeweils mit einer regelabweichungsabhängigen Verstärkung kRD und einer zonenunabhängigen Gesamtregelverstärkung kG multipliziert. Derart wird aufgrund der aktuellen Regelabweichung RDa der mit Hilfe des Planheitsmesssystems 6 (siehe FIG 1) ermittelten Planheitsverteilung durch die Vielzonen-Kühlungsregelung eine entsprechende Kühlmengenverteilung CZ in den einzelnen Kühldüsen 5 bzw. Zonen 11 ermittelt. Bei den Größen aktuelle Regelabweichung RDa, geglättete Regelabweichung RDg, regelabweichungsabhängige Verstärkung kRD und Kühlmengenverteilung CZ handelt es sich um Vektoren, wobei die Anzahl der Elemente dieser Vektoren vorzugsweise der Anzahl der Zonen 11 entspricht. Die übrigen in FIG 4 gezeigten Größen sind vorzugsweise skalar.As in FIG. 4 shown schematically, first from the current control deviation R D a per zone 11, a smoothed re-deviation R D g each zone 11 formed and each with a rule deviation dependent gain k R D and a zone-independent total control gain kG multiplied. In this way, due to the current control deviation R D a with the help of the flatness measuring system 6 (see FIG. 1 ) determined flatness distribution by the multi-zone cooling control a corresponding cooling distribution C Z determined in the individual cooling nozzles 5 and zones 11. For the variables current control deviation R D a, smoothed control deviation R D g, rule-dependent gain k R D and cooling distribution C Z are vectors, the number of elements of these vectors preferably corresponding to the number of zones 11. The rest in FIG. 4 sizes shown are preferably scalar.

Vom überlagerten Gesamtmengenregler wird die sich aus der Planheitsmessung bzw. aus der Planheitsregelung ergebende Gesamtkühlmenge CS mit der vorgegebenen Gesamtkühlmenge VS verglichen. Die vorgegebene Gesamtkühlmenge VS wird vorzugsweise wie vorangehend beispielhaft beschrieben in Abhängigkeit von der im Walzspalt wirksamen Leistung ermittelt. Aus der sich daraus ergebenden gesamten Kühlmengendifferenz SD wird ein zusätzlicher Kühlmengenanteil Ca für die einzelnen Kühldüsen 5 bzw. Zonen 11 berechnet. Hierbei wird berücksichtigt, dass eine minimale bzw. maximale Kühlmenge je Zone 11 nicht unter- bzw. überschritten werden kann, und dass unterschiedliche Zonenbreiten b1, b2 (siehe FIG 2) unterschiedliche Kühlmitteldurchflussmengen bedingen. Es wird zwischen fehlenden Kühlmengenanteilen mk bezogen auf Zonen 11 großer Breite b1 und überschüssigen Kühlmengenanteilen mg bezogen auf Zonen großer Breite b1 unterschieden. Die überschüssigen Kühlmengenanteile mg bezogen auf Zonen 11 großer Breite b1 werden von den gesamten Kühlmengenanteilen mz bezogen auf Zonen 11 großer Breite b1 abgezogen um den zusätzlichen Kühlmengenanteil Ca für die einzelnen Kühldüsen 5 zu ermitteln. Dieser zusätzliche Kühlmengenanteil Ca wird nun nicht direkt auf die Kühlmengenverteilung CZ addiert, sondern in eine Regelabweichung r umgerechnet und so auf den Reglerausgang einer jeden Zone 11 addiert. Der Vergleich der Gesamtkühlmenge CS mit der vorgegebenen Gesamtkühlmenge VS und die sich daraus ergebende Korrektur des Reglerausgangs wird so oft wiederholt, bis die Differenz zwischen der Gesamtkühlmenge CS und der vorgegebenen Gesamtkühlmenge VS einen vorgebbaren Wert unterschreitet.From the superimposed total quantity regulator, the total cooling quantity CS resulting from the flatness measurement or from the flatness control is compared with the predetermined total cooling quantity VS. The predetermined total amount of cooling VS is preferably determined as described above as an example depending on the effective power in the nip. From the resulting total cooling amount difference SD becomes calculated additional cooling component Ca for the individual cooling nozzles 5 and zones 11. This takes into account that a minimum or maximum cooling amount per zone 11 can not be fallen below or exceeded, and that different zone widths b 1 , b 2 (see FIG. 2 ) condition different coolant flow rates. A distinction is made between missing quantities of cooling components mk with respect to zones 11 of large width b 1 and excess quantities of cooling components mg relative to zones of large width b 1 . The excess cooling proportions mg based on zones 11 of large width b 1 are subtracted from the total cooling amount fractions mz relative to zones 11 of large width b 1 in order to determine the additional cooling amount fraction Ca for the individual cooling nozzles 5. This additional amount of cooling Ca is now not directly on the cooling volume distribution C Z added, but converted into a control deviation r and added to the controller output of each zone 11. The comparison of the total amount of cooling CS with the predetermined total amount of cooling VS and the resulting correction of the controller output is repeated until the difference between the total amount of cooling CS and the predetermined total amount of cooling VS falls below a predefinable value.

Der wesentliche der Erfindung zugrunde liegende Gedanke lässt sich wie folgt zusammenfassen:The essential idea underlying the invention can be summarized as follows:

Die Erfindung betrifft ein Verfahren zum Aufbringen eines Kühlmittels 8 auf ein Walzgut 1 und/oder auf mindestens eine Walze 3, 4 eines Walzgerüsts 2 mit einem Walzspalt 9. Dabei wird zunächst eine aufzubringende Gesamtkühlmenge in Abhängigkeit der im Walzspalt 9 wirksamen Leistung bestimmt. Dann werden Kühlmengen für mehrere Zonen 11 in Abhängigkeit der mittels eines Planheitsmesssystems 6 ermittelten Regelabweichung der Planheitsverteilung bestimmt, wobei durch Vergleich der Summe der so ermittelten Kühlmengen mit der zuvor bestimmten Gesamtkühlmenge eine Kühlmengendifferenz ermittelt wird, aufgrund derer Zusatzkühlmengenanteile für die Zonen 11 unter Berücksichtigung von Ober- und Untergrenzen der Kühlmengen für die Zonen 11 ermittelt werden. Dieses Vorgehen wird solange wiederholt, bis die Kühlmitteldifferenz einen vorgebbaren Wert unterschreitet. Erfindungsgemäß wird durch das Einhalten der vorgegebenen Gesamtkühlmenge VS für konstante und stabile Kühl- und Schmierbedingungen gesorgt. Dickeneinflüsse des Walzguts 1 und überhöhte Temperaturen des Walzguts 1 bzw. der Walzen 3, 4 werden vermieden.The invention relates to a method for applying a coolant 8 to a rolling stock 1 and / or at least one roller 3, 4 of a roll stand 2 with a nip 9. In this case, a total amount of cooling to be applied is first determined as a function of the effective power in the nip 9. Then, cooling quantities for a plurality of zones 11 are determined as a function of the deviation of the flatness distribution determined by means of a flatness measuring system 6, wherein a cooling quantity difference is determined by comparing the sum of the thus determined cooling quantities with the previously determined total cooling quantity, on the basis of which additional cooling quantity components for the zones 11 taking into account upper - And lower limits of the cooling quantities for the zones 11 are determined. This procedure is repeated until the coolant difference falls below a predeterminable value. According to the invention, maintenance of the predetermined total cooling quantity VS ensures constant and stable cooling and lubricating conditions. Dickeneinflüsse of the rolling stock 1 and excessive temperatures of the rolling stock 1 and the rollers 3, 4 are avoided.

Claims (9)

  1. Method for applying a coolant (8) to a rolled product (1) and/or to at least one working roll (3) of a roll stand (2) having a roll gap (9), wherein the rolled product (1) is rolled with the aid of the roll stand (2), characterized in that the quantity of the coolant (8) which must be applied is determined as a function of the effective power in the roll gap, wherein the effective power in the roll gap (9) is made up of the power of the at least one drive of the roll stand (2), plus the power related to the tension of the product in the exit side of the roll stand (2), minus the power related to the tension of the product in the entry side of the roll stand (2).
  2. Method according to claim 1, characterized in that the quantity of the coolant (8) which must be applied is determined in proportion to the effective power in the roll gap (9).
  3. Method according to one of the preceding claims, characterized in that the flatness of the rolled product (1) is determined over a plurality of zones (11) in the widthwise direction (y) of the rolled product (1), and that the coolant (8) is applied in a distributed manner to the rolled product (1) and/or to the at least one working roll (3) as a function of the determined flatness distribution over the plurality of zones (11).
  4. Method according to one of the preceding claims, comprising the following steps:
    i) specifying a total cooling quantity which must be applied as a function of the effective power in the roll gap (9);
    ii) specifying cooling quantities for the zones (11) as a function of a control deviation of the flatness distribution;
    iii) determining a cooling quantity difference by comparing the sum of the cooling quantities that were specified as per step ii) with the total cooling quantity that was specified as per step i);
    iv) determining additional cooling quantity portions for the zones (11) on the basis of the cooling quantity difference that was determined as per step iii), subject to upper and lower limits of the cooling quantities for the zones (11);
    v) repeating steps ii) to iv) until the cooling quantity difference as per step iii) falls below a predeterminable value.
  5. Method according to one of the preceding claims, characterized in that the coolant (8) can be applied to the rolled product (1) with the aid of a plurality of cooling nozzles (5), each of which is assigned to a zone (11).
  6. Computer program product comprising program code means which are suitable for carrying out the steps of a method as claimed in one of the preceding claims when the computer program product is executed on a control processor (7).
  7. Control processor (7) for at least one roll stand (2), characterized in that it is programmed using a computer program product as claimed in claim 6.
  8. Roll stand (2) with a cooling system (5,10), including a flatness measuring system (6) and a control processor (7) as claimed in claim 7, wherein the control processor (7) is linked to the flatness measuring system (6) and the cooling system (5, 10).
  9. Roll stand (2) according to claim 8, wherein the cooling system (5,10) has a plurality of cooling nozzles (5) which are arranged on at least one bar (10).
EP06777383A 2005-06-24 2006-06-21 Coolant applying method Active EP1907145B1 (en)

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DE102005029461A DE102005029461B3 (en) 2005-06-24 2005-06-24 Applying coolant to rolled stock and/or to working rolls in a roll stand comprises applying the coolant in an amount depending on the work done in the gap between the rolls
PCT/EP2006/063382 WO2006136570A1 (en) 2005-06-24 2006-06-21 Coolant applying method

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DE102007053523A1 (en) * 2007-05-30 2008-12-04 Sms Demag Ag Device for influencing temperature distribution over width of slab or strip, particularly in one or multiple hot strip mill, has cooling device, which is provided with nozzles for applying cooling agent on slab or strip
BRPI0815931A2 (en) * 2007-08-28 2018-01-09 Air Prod & Chem method and apparatus for use in an industrial process
US9889480B2 (en) 2013-03-11 2018-02-13 Novelis Inc. Flatness of a rolled strip
EP2842646A1 (en) 2013-08-29 2015-03-04 Siemens Aktiengesellschaft Method and device for tempering rollers
PL3140057T5 (en) * 2014-05-09 2023-02-27 Novelis, Inc. Hybrid oil and water cooled rolling
CN112474797B (en) * 2020-10-23 2022-10-14 福建三宝特钢有限公司 2.0mm corrosion-resistant hot-rolled coiled plate rolling process
JP7447779B2 (en) * 2020-12-21 2024-03-12 東芝三菱電機産業システム株式会社 Shape control system for rolled materials

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US3150548A (en) * 1961-06-26 1964-09-29 United States Steel Corp Method and apparatus for controlling the thickness of rolled strip
US3802237A (en) * 1972-05-26 1974-04-09 United States Steel Corp Localized strip shape control and display
AT345237B (en) * 1976-12-28 1978-09-11 Voest Ag DEVICE FOR ROLLING STRIP OR TABLE-SHAPED ROLLED MATERIAL
DE2927769C2 (en) 1979-07-10 1987-01-22 SMS Schloemann-Siemag AG, 4000 Düsseldorf Device for controlling the flatness of strip-shaped metal rolling stock in a cold rolling mill
SU1296248A1 (en) 1984-03-21 1987-03-15 Украинский научно-исследовательский институт металлов Method of cooling sized rolls of rolling mill
EP0222041B1 (en) * 1985-11-15 1991-02-06 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Method for controlling shape of material in rolling process
JPH02197309A (en) 1989-01-23 1990-08-03 Sumitomo Metal Ind Ltd Method for controlling sheet shape by coolant
FR2723012A1 (en) * 1994-08-01 1996-02-02 Mannesmann Ag METHOD FOR CONTROLLING THE TEMPERATURE WHEN LAMINATING A HOT STRIP
EP0776710B1 (en) * 1995-11-20 2001-12-19 SMS Demag AG Device for influencing the profile section of a rolled strip
DE19744503A1 (en) 1997-10-09 1999-04-15 Schloemann Siemag Ag Device and method for influencing the frictional relationships between an upper and a lower roll of a roll stand
DE19846900C2 (en) * 1998-10-12 2000-08-10 Thyssenkrupp Stahl Ag Method and device for producing a metal strip for tailored blanks

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BRPI0612516A8 (en) 2016-10-18
PL1907145T3 (en) 2009-06-30
DE102005029461B3 (en) 2006-12-07
ES2317569T3 (en) 2009-04-16
EP1907145A1 (en) 2008-04-09
CN101287557A (en) 2008-10-15
CN101287557B (en) 2011-04-13
WO2006136570A1 (en) 2006-12-28
ATE419077T1 (en) 2009-01-15
US20090084153A1 (en) 2009-04-02
DK1907145T3 (en) 2009-04-27
UA92346C2 (en) 2010-10-25
BRPI0612516A2 (en) 2010-11-30
RU2418643C2 (en) 2011-05-20
DE502006002516D1 (en) 2009-02-12
US8387433B2 (en) 2013-03-05
RU2008102645A (en) 2009-07-27

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