EP1750864B1 - Method and device for cooling and/or lubricating cylinders and/or rolling stock - Google Patents

Method and device for cooling and/or lubricating cylinders and/or rolling stock Download PDF

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Publication number
EP1750864B1
EP1750864B1 EP05745164A EP05745164A EP1750864B1 EP 1750864 B1 EP1750864 B1 EP 1750864B1 EP 05745164 A EP05745164 A EP 05745164A EP 05745164 A EP05745164 A EP 05745164A EP 1750864 B1 EP1750864 B1 EP 1750864B1
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EP
European Patent Office
Prior art keywords
rolls
rolling stock
nozzles
nozzle
nozzle rows
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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.)
Not-in-force
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EP05745164A
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German (de)
French (fr)
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EP1750864B2 (en
EP1750864A1 (en
Inventor
Rolf BÜNTEN
Hartmut Pawelski
Ludwig Weingarten
Heiner Siebel
Hans-Peter Richter
Klaus Grimm
Dieter Daub
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SMS Group GmbH
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SMS Siemag AG
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    • 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
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a method and apparatus for cooling and / or lubrication of rolls and / or rolling, in which from a plurality of nozzles / rows of nozzles on the one hand a cooling medium on the rollers and for lubrication on the other hand, a base oil is applied to the rolling stock before the nip, wherein the nozzles / nozzle rows can be adjusted individually and independently of each other.
  • a hot rolling process and a hot rolling mill for metal strip have become known from one or more rolling mills.
  • a cooling liquid sprayed in a narrow, extending immediately before the nip area wherein both the shells of the work rolls and the metal strip are acted upon.
  • the temperature at the surface of the jackets of the work rolls is adjusted so that at least immediately before the nip, a temperature is reached, which is below the boiling temperature of the cooling liquid.
  • a method and a device are known in which the concentration of an emulsion of rolling oil is influenced in a targeted manner and the emulsion or dispersion is collected and separated again after it has left the nip or, respectively, before it leaves the nip.
  • the focus of this solution lies in the current production of the emulsion and the separation of the media involved.
  • EP 0 794 023 A2 shows a device and describes a method in which a lubricant, separated from water, obliquely applied in the nip and directly to a rolling stock.
  • a lubricant separated from water, obliquely applied in the nip and directly to a rolling stock.
  • FIGS. 1 to 4 is shown and explained in the description that the Schierstoff comes into contact with the cooling water and mixed with it and washed off. This mixture must then be collected and separated. For this purpose, several tanks and separation devices are necessary.
  • JP 59 169 608 A It is known that a mineral oil is sprayed during hot rolling on the surfaces of the work rolls, the cooling water was previously removed from these surfaces.
  • a lubricant is sprayed by means of nozzles 3 directly to the work rolls 1 and through further nozzles 3 directly to the support rollers 2. Since both the work rolls and the backup rolls are loaded with a lubricant, an increased use of lubricant is necessary in order to comply with the required rolling properties during hot rolling.
  • the known cooling and / or lubricating methods or devices have in common that in the applied emulsions of the lubricating film, consisting of the carrier medium water and the actual lubricating shares (additive or oil) does not arrive effectively in the nip.
  • the lubricating film consisting of the carrier medium water and the actual lubricating shares (additive or oil) does not arrive effectively in the nip.
  • additive or oil additive or oil
  • the invention is therefore an object of the invention to provide a method and an apparatus of the type mentioned without the disadvantages mentioned and in particular to achieve significantly improved lubrication in the nip and to minimize consumption.
  • the invention is based on the surprising finding confirmed by numerous experiments that with the direct application of exclusively the lubricating additive or oil, which is used sealed or separated from the cooling medium, the lubricating additive unfolds its full effect in the roll gap.
  • a proposal of the invention provides that the base oil at the inlet side on the top and / or on the underside of the preferably cold-rolled Rolled material is applied. Both top and bottom application may be appropriate depending on the material properties of the rolling stock.
  • cooling medium is advantageously applied to the rolls both on the inlet side and outlet side, washing of the work rolls can be achieved simultaneously with the strip cooling, even before the rolls have completed their rotation to the inlet side. As it turns out, not only the service life of the work rolls is substantially increased, but in addition to almost sparkling bare rolls and the Walzgutober perennial be much cleaner.
  • a media barrier for example, between the nozzle / nozzle rows for applying the cooling medium to the rollers and the nozzle / nozzle rows for applying the base oil to the rolling stock.
  • a seal in the form of a bulkhead arranged. The cooling medium is thereby kept safe from the oil or additive remotely or separately, so that the applied directly to the rolling surface additive / oil can not be washed off.
  • a base oil nozzle / nozzle row arrangement is directed vertically onto the surface of the rolling stock and another base oil nozzle / nozzle row arrangement obliquely into the roll gap.
  • the manufacturing and assembly costs can be limited.
  • the nozzles / nozzle rows are independently adjustable or acted upon with different pressures.
  • coolant nozzles / rows of nozzles arranged on the outlet side can advantageously also be directed onto the rollers.
  • the single figure shows a side view of a roller assembly according to the invention with nozzles / nozzle rows for the rolling stock, the nip and the rollers.
  • a rolling stock 3 is rolled in the direction of passage indicated by the arrow 4; the rolling stock or strip 3 is deformed in the nip 15 between the work rolls 1, 2.
  • nozzles / nozzle rows 7, 7 'and 8, 8' or 9, 9 'are arranged, of which the nozzles / nozzle rows 9, 9' are not shown Apply supply source supplied cooling medium to the surface of the work rolls 1, 2.
  • the nozzles / nozzle rows 7, 7 ', 8', 8 'or 9, 9' arranged in the exemplary embodiment in nozzle bars 14, 14 ' can be acted upon separately and set independently of one another and subjected to different pressures.
  • the nozzles / nozzle rows 7, 7 ', 8', 8 'or 9, 9' arranged in the exemplary embodiment in nozzle bars 14, 14 ' can be acted upon separately and set independently of one another and subjected to different pressures.
  • the additive or oil on the top 10 and / or bottom 11 of the rolled material 3 vertically directed Nozzle / nozzle rows 7, 7 'with a pressure of 2 to 5 bar
  • the large amount of cooling medium is held separated by the in the embodiment as a bulkhead 12, 12 'formed seal of the small amount of additive / oil, which thus fully effective in the nip 15 reaches the deployment.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Kühlung und/oder Schmierung von Walzen und/oder Walzgut, bei dem aus mehreren Düsen/Düsenreihen einerseits ein Kühlmedium auf die Walzen und zur Schmierung andererseits ein Grundöl vor dem Walzspalt auf das Walzgut aufgebracht wird, wobei die Düsen/Düsenreihen einzeln und unabhängig voneinander angestellt werden können.The invention relates to a method and apparatus for cooling and / or lubrication of rolls and / or rolling, in which from a plurality of nozzles / rows of nozzles on the one hand a cooling medium on the rollers and for lubrication on the other hand, a base oil is applied to the rolling stock before the nip, wherein the nozzles / nozzle rows can be adjusted individually and independently of each other.

Aus der EP 0 054 172 A2 ist es bekannt, zum spannungsfreien Walzen von Kaltband den Reibwert zwischen der Bandoberfläche und den Walzenballenmantelflächen durch Beaufschlagung mit Walzemulsion zu beeinflussen. Die Walzemulsion wird dabei in Abhängigkeit von hinter dem letzten Walzgerüst in Querrichtung des Bandes liegenden Zonen ermittelten partiellen Zugspannungen zugeführt. Damit bei geringem Erstellungs-, Unterhaltungs- und Betriebsaufwand unter den in der Stahl- und Aluminiumindustrie vorkommenden Arbeitsbedingungen der Kaltwalzgerüste kurze Regelzeiten erreichbar sind, wird dem Trägermedium Wasser der Walzemulsion ein Grundöl vor dem Einlauf des Bandes in den Walzspalt in durch die ermittelten partiellen Zugspannungen bestimmter Menge und in örtlich begrenzten Bereichen zugegeben. Durch die lokal auf Streifen des zu walzenden Bandes aufgebrachten Schmierbestandteile soll durch die damit erreichte, lokal verbesserte Schmierung die Walzkraft lokal gesenkt und damit auch die lokale Abplattung der Walzen sowie auch die lokale Enddicke des Bandes verringert werden. Weiterhin sollen Planheitsfehler des gewalzten Bandes vermieden werden, indem vergleichbar mit einer Zonenkühlung die Reibungswärme der Walzen lokal verringert wird.From the EP 0 054 172 A2 It is known to influence the coefficient of friction between the strip surface and the roll barrel shell surfaces by applying rolling emulsion for tension-free rolling of cold strip. The rolling emulsion is fed as a function of partial tensile stresses determined downstream of the last roll stand in the transverse direction of the strip. In order to achieve short control times with low production, maintenance and operating costs under the working conditions of the cold rolling stands in the steel and aluminum industry, the carrier medium water of the rolling emulsion becomes a base oil before the entry of the strip into the roll gap determined by the determined partial tensile stresses Quantity and in localized areas added. By locally applied to strips of the strip to be rolled lubricating components should be locally reduced by the thus achieved, locally improved lubrication, the rolling force and thus the local flattening of the rolls and also the local end thickness of the strip can be reduced. Furthermore, flatness errors of the rolled strip should be avoided by locally reducing the frictional heat of the rolls, comparable to zone cooling.

Durch die DE 41 34 599 C1 sind ein Warmwalzverfahren und ein Warmwalzwerk für Metallband aus einem oder mehreren Walzgerüsten bekanntgeworden. Zur Vermeidung von Oberflächenfehlern auf den Arbeitswalzen wird eine Kühlflüssigkeit in einem schmalen, sich unmittelbar vor dem Walzspalt erstreckenden Bereich aufgesprüht, wobei sowohl die Mäntel der Arbeitswalzen als auch das Metallband beaufschlagt werden. Die Temperatur an der Oberfläche der Mäntel der Arbeitswalzen wird so eingestellt, dass zumindest unmittelbar vor dem Walzspalt eine Temperatur erreicht wird, die unter der Siedetemperatur der Kühlflüssigkeit liegt.By the DE 41 34 599 C1 For example, a hot rolling process and a hot rolling mill for metal strip have become known from one or more rolling mills. To avoid surface defects on the work rolls is a cooling liquid sprayed in a narrow, extending immediately before the nip area, wherein both the shells of the work rolls and the metal strip are acted upon. The temperature at the surface of the jackets of the work rolls is adjusted so that at least immediately before the nip, a temperature is reached, which is below the boiling temperature of the cooling liquid.

Aus der EP 0 367 967 B1 sind ein Verfahren und eine Vorrichtung bekannt, bei dem bzw. der die Konzentration einer Emulsion an Walzöl gezielt beeinflusst und die Emulsion bzw. Dispersion nach dem Austritt aus dem Walzspalt bzw. beim Ablaufen vor dem Walzspalt aufgefangen und wieder getrennt wird. Hiermit wird es möglich, die Emulsion bzw. Dispersion, die in den Walzspalt eingebracht wird, immer wieder mit einer bestimmten Konzentration zeitgerecht vor Einzug in den Walzspalt herzustellen. Der Schwerpunkt dieser Lösung liegt in der aktuellen Herstellung der Emulsion und der Trennung der beteiligten Medien.From the EP 0 367 967 B1 For example, a method and a device are known in which the concentration of an emulsion of rolling oil is influenced in a targeted manner and the emulsion or dispersion is collected and separated again after it has left the nip or, respectively, before it leaves the nip. This makes it possible to produce the emulsion or dispersion, which is introduced into the nip, time and again with a certain concentration before moving into the nip. The focus of this solution lies in the current production of the emulsion and the separation of the media involved.

EP 0 794 023 A2 zeigt eine Vorrichtung und beschreibt ein Verfahren, bei dem ein Schmiermittel, getrennt von Wasser, schräg in den Walzspalt und direkt auf ein Walzgut aufgebracht wird. In den Figuren 1 bis 4 ist dargestellt und in der Beschreibung erläutert, dass das Schiermittel in Kontakt mit dem Kühlwasser gelangt und mit diesem vermischt und abgewaschen wird. Dieses Gemisch muss anschließend aufgefangen und getrennt werden. Hierzu sind mehrere Tanks und Trenneinrichtungen notwendig. EP 0 794 023 A2 shows a device and describes a method in which a lubricant, separated from water, obliquely applied in the nip and directly to a rolling stock. In the FIGS. 1 to 4 is shown and explained in the description that the Schiermittel comes into contact with the cooling water and mixed with it and washed off. This mixture must then be collected and separated. For this purpose, several tanks and separation devices are necessary.

Aus JP 59 169 608 A ist bekannt, dass ein Mineralöl beim Warmwalzen auf die Oberflächen der Arbeitswalzen aufgesprüht wird, wobei das Kühlwasser vorher von diesen Oberflächen entfernt wurde.Out JP 59 169 608 A It is known that a mineral oil is sprayed during hot rolling on the surfaces of the work rolls, the cooling water was previously removed from these surfaces.

Nach JP 11 290 903 A wird ein Schmierstoff mittels Düsen 3 direkt auf die Arbeitswalzen 1 und durch weitere Düsen 3 direkt auf die Stützwalzen 2 aufgespritzt. Da sowohl die Arbeitswalzen als auch die Stützwalzen mit einem Schmierstoff beaufschlagt werden, ist ein erhöhter Einsatz von Schmierstoff notwendig, um beim Warmwalzen die geforderten Walzguteigenschaften einzuhalten bzw. zu erreichen.To JP 11 290 903 A a lubricant is sprayed by means of nozzles 3 directly to the work rolls 1 and through further nozzles 3 directly to the support rollers 2. Since both the work rolls and the backup rolls are loaded with a lubricant, an increased use of lubricant is necessary in order to comply with the required rolling properties during hot rolling.

Den bekannten Kühl- und/oder Schmierverfahren bzw. -vorrichtungen ist gemeinsam, dass bei den aufgetragenen Emulsionen der Schmierfilm, bestehend aus dem Trägermedium Wasser und den eigentlichen schmierenden Anteilen (Additiv bzw. Öl) nicht effektiv im Walzspalt ankommt. Als Folge der ungenügenden Schmierung kommt es zu unzureichenden Bandoberflächen, zu erhöhten Walzenund Band- bzw. Walzguttemperaturen und auch zu einem sich ebenfalls nachteilig auf die Oberflächengüte des Walzgutes auswirkenden Gerüstrattern mit entsprechenden Rattermarken auf der Walzgut-Oberfläche. Eine Verbesserung konnte auch durch veränderte Anteile des Additivs und durch Veränderung der Walzgeschwindigkeit nicht erreicht werden.The known cooling and / or lubricating methods or devices have in common that in the applied emulsions of the lubricating film, consisting of the carrier medium water and the actual lubricating shares (additive or oil) does not arrive effectively in the nip. As a result of insufficient lubrication, there are insufficient strip surfaces, increased roll and strip or rolling temperatures and also a disadvantage to the surface quality of the rolling stock impacting Gerüstratttern with corresponding chatter marks on the rolling stock surface. An improvement could not be achieved by changing the proportions of the additive and by changing the rolling speed.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung der eingangs genannten Art ohne die genannten Nachteile zu schaffen und mit insbesondere deutlich verbesserter Schmierung im Walzspalt zu erreichen sowie den Verbrauch zu minimieren.The invention is therefore an object of the invention to provide a method and an apparatus of the type mentioned without the disadvantages mentioned and in particular to achieve significantly improved lubrication in the nip and to minimize consumption.

Diese Aufgabe wird durch ein Verfahren mit den Merkmalen von Anspruch 1 in Kombination gelöst.This object is achieved by a method having the features of claim 1 in combination.

Der Erfindung liegt die durch zahlreiche Versuche bestätigte überraschende Erkenntnis zugrunde, dass mit dem Direktauftrag ausschließlich des schmierenden Additivs bzw. Öls, das abgedichtet bzw. getrennt von dem Kühlmedium zum Einsatz kommt, das schmierende Additiv im Walzspalt seine volle Wirkung entfaltet.The invention is based on the surprising finding confirmed by numerous experiments that with the direct application of exclusively the lubricating additive or oil, which is used sealed or separated from the cooling medium, the lubricating additive unfolds its full effect in the roll gap.

Hierbei wurde weiterhin erkannt, dass eine kleine Menge ausreicht, z.B. statt üblich bis 4.000 l/min nur noch etwa 1 bis 21 pro Bund, weil sich das Öl als inkrompressible, trennende Schicht zwischen dem Walzgut und den Walzen in den Rauhigkeiten der Walzgut-Oberfläche ablagern kann. Das ist völlig anders bei den üblichen großen Auftragmengen, bei denen das schmierende Additiv unwirksam, nahezu komplett weggeschaltet wird.It has been further recognized that a small amount is sufficient, e.g. instead of usual up to 4,000 l / min only about 1 to 21 per bundle, because the oil can be deposited as an incompressible, separating layer between the rolling stock and the rollers in the roughness of the rolling stock surface. This is completely different with the usual large order quantities, in which the lubricating additive is ineffective, almost completely switched off.

Bei Walzversuchen mit Messing und Kupfer hat sich zudem gezeigt, dass trotz der erfindungsgemäß sehr kleinen Ölmenge keine Erhöhung der Walzgut- bzw. Bandtemperatur vorlag, diese vielmehr sogar niedriger als bei herkömmlichen Kühlverfahren ist. Durch die erfindungsgemäße Trennung von Kühlmedium und Öl bzw. Additiv durch Abdichtung zwischen den Walzen und dem Walzspalt kann das direkt aufgetragene Additiv bzw. Öl nicht von der Bandoberfläche abgewaschen werden. Damit wird die Reibung zwischen dem Walzband und dem Walzgut deutlich verringert, womit gleichzeitig die Wärmeentwicklung herabgesetzt wird. Gleichwohl wird aber eine notwendige geringe Reibung aufrechterhalten, um die Verformung des Walzgutes über den Walzspalt übertragen zu können.In rolling tests with brass and copper has also shown that, despite the invention very small amount of oil no increase in Walzgut- or strip temperature was present, this is even lower than in conventional cooling method. Due to the inventive separation of cooling medium and oil or additive by sealing between the rollers and the nip, the directly applied additive or oil can not be washed off the belt surface. Thus, the friction between the rolled strip and the rolling stock is significantly reduced, which simultaneously reduces the development of heat. However, however, a necessary low friction is maintained in order to transmit the deformation of the rolling stock on the nip can.

Ein Vorschlag der Erfindung sieht vor, dass das Grundöl an der Einlaufseite auf die Oberseite und/oder auf die Unterseite des vorzugsweise kaltgewalzten Walzgutes aufgebracht wird. Das sowohl ober- als auch unterseitige Auftragen kann je nach Materialbeschaffenheit des Walzgutes zweckmäßig sein.A proposal of the invention provides that the base oil at the inlet side on the top and / or on the underside of the preferably cold-rolled Rolled material is applied. Both top and bottom application may be appropriate depending on the material properties of the rolling stock.

Wenn vorteilhaft das Kühlmedium sowohl einlaufseitig als auch auslaufseitig auf die Walzen aufgebracht wird, lässt sich neben der Bandkühlung gleichzeitig auch ein Waschen der Arbeitswalzen erreichen, noch bevor die Walzen ihre Umdrehung zur Einlaufseite beendet haben. Wie sich herausgestellt hat, wird nicht nur die Standzeit der Arbeitswalzen wesentlich erhöht, sondern neben nahezu blitzeblanken Walzen werden auch die Walzgutoberflächen deutlich sauberer.If the cooling medium is advantageously applied to the rolls both on the inlet side and outlet side, washing of the work rolls can be achieved simultaneously with the strip cooling, even before the rolls have completed their rotation to the inlet side. As it turns out, not only the service life of the work rolls is substantially increased, but in addition to almost sparkling bare rolls and the Walzgutoberflächen be much cleaner.

Bei einer Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens ist zwischen den Düsen/Düsenreihen zur Aufbringung des Kühlmediums auf die Walzen und den Düsen/Düsenreihen zur Aufbringung des Grundöls auf das Walzgut eine Mediensperre, z.B. eine Abdichtung in Form eines Schotts, angeordnet. Das Kühlmedium wird dadurch sicher von dem Öl bzw. Additiv fern- bzw. getrenntgehalten, so dass das direkt auf die Walzgut-Oberfläche aufgetragene Additiv/Öl nicht abgewaschen werden kann.In an apparatus for carrying out the method according to the invention, a media barrier, for example, between the nozzle / nozzle rows for applying the cooling medium to the rollers and the nozzle / nozzle rows for applying the base oil to the rolling stock. a seal in the form of a bulkhead, arranged. The cooling medium is thereby kept safe from the oil or additive remotely or separately, so that the applied directly to the rolling surface additive / oil can not be washed off.

Nach einer vorteilhaften Ausgestaltung der Erfindung ist eine Grundöl-Düsen-/Düsenreihenanordnung vertikal auf die Oberfläche des Walzguts und eine andere Grundöl-Düsen-/Düsenreihenanordnung schräg in den Walzspalt gerichtet. Damit lässt sich die gezielte Wirkung des Additivs/Öls am Ort des Geschehens, nämlich im Walzspalt mit höchster Wirkung erreichen.According to an advantageous embodiment of the invention, a base oil nozzle / nozzle row arrangement is directed vertically onto the surface of the rolling stock and another base oil nozzle / nozzle row arrangement obliquely into the roll gap. This makes it possible to achieve the targeted effect of the additive / oil at the site of the event, namely in the nip with maximum effect.

Durch eine vorzugsweise Anordnung der Düsen/Düsenreihen in Düsenbalken lässt sich der Herstellungs- und Montageaufwand begrenzen.By a preferred arrangement of the nozzle / nozzle rows in the nozzle beam, the manufacturing and assembly costs can be limited.

Nach Ausgestaltungen der Erfindung sind die Düsen/Düsenreihen unabhängig voneinander anstellbar bzw. mit unterschiedlichen Drücken beaufschlagbar. Zur Begünstigung des Wascheffekts können vorteilhaft auch auslaufseitig angeordnete Kühlmittel-Düsen/Düsenreihen auf die Walzen gerichtet sein.According to embodiments of the invention, the nozzles / nozzle rows are independently adjustable or acted upon with different pressures. To favor the washing effect, coolant nozzles / rows of nozzles arranged on the outlet side can advantageously also be directed onto the rollers.

Weitere Merkmale und Einzelheiten der Erfindung ergeben sich aus den Ansprüchen und der nachfolgenden Beschreibung eines Ausführungsbeispiels anhand einer sehr schematischen Zeichnung. Die einzige Figur zeigt eine Seitenansicht einer erfindungsgemäßen Walzenanordnung mit Düsen/Düsenreihen für das Walzgut, den Walzspalt und die Walzen.Further features and details of the invention will become apparent from the claims and the following description of an embodiment with reference to a very schematic drawing. The single figure shows a side view of a roller assembly according to the invention with nozzles / nozzle rows for the rolling stock, the nip and the rollers.

Wie dargestellt, wird zwischen einer oberen Arbeitswalze 1 und einer unteren Arbeitswalze 2 ein Walzgut 3 in der mit dem Pfeil 4 angegebenen Durchlaufrichtung ausgewalzt; das Walzgut bzw. -band 3 wird im Walzspalt 15 zwischen den Arbeitswalzen 1, 2 verformt.As shown, between a top work roll 1 and a lower work roll 2, a rolling stock 3 is rolled in the direction of passage indicated by the arrow 4; the rolling stock or strip 3 is deformed in the nip 15 between the work rolls 1, 2.

An der Einlaufseite 5 des weiter nicht gezeigten Walzgerüstes für die Arbeitswalzen 1, 2 sind Düsen/Düsenreihen 7, 7' und 8, 8' bzw. 9, 9' angeordnet, von denen die Düsen/Düsenreihen 9, 9' von einer nicht dargestellten Versorgungsquelle zugeführtes Kühlmedium auf die Oberfläche der Arbeitswalzen 1, 2 auftragen. Von diesen Kühlmedium-Düsen/Düsenreihen 9, 9' durch ein Schott 12, 12' getrennt, wird von den Düsen/Düsenreihen 7, 7' bzw. 8, 8' ein Additiv bzw. Öl direkt, vertikal durch die Düsen/Düsenreihen 7, 7' auf die Ober- und Unterseite 10, 11 des Walzguts aufgetragen bzw. durch die Düsen/Düsenreihen 8, 8' mit schräger Ausrichtung in den Walzspalt 15 auf das Walzgut 3 aufgetragen. Die Menge des von den Düsen/Düsenreihen 7, 7' bzw. 8, 8' direkt aufgetragenen Additivs bzw. Öls ist sehr gering und kann beispielsweise von einem Behälter zugeführt werden. Wenn das Walzgerüst der Arbeitswalzen 1, 2 im Reversierbetrieb arbeitet, können entsprechende Düsen/Düsenreihen 7, 7', 8, 8' bzw. 9, 9' auch an der Auslaufseite 6 vorgesehen werden.On the inlet side 5 of the rolling stand for the work rolls 1, 2, not shown further, nozzles / nozzle rows 7, 7 'and 8, 8' or 9, 9 'are arranged, of which the nozzles / nozzle rows 9, 9' are not shown Apply supply source supplied cooling medium to the surface of the work rolls 1, 2. Of these cooling medium nozzles / nozzle rows 9, 9 'separated by a bulkhead 12, 12', of the nozzle / nozzle rows 7, 7 'and 8, 8', an additive or oil directly, vertically through the nozzle / nozzle rows. 7 , 7 'applied to the top and bottom 10, 11 of the rolling stock or applied by the nozzle / nozzle rows 8, 8' with an oblique orientation in the nip 15 on the rolling stock 3. The amount of the directly applied by the nozzle / nozzle rows 7, 7 'and 8, 8' additive or oil is very low and can be supplied, for example, from a container. If the roll stand of the work rolls 1, 2 operates in reverse operation, corresponding nozzles / nozzle rows 7, 7 ', 8, 8' or 9, 9 'can also be provided on the outlet side 6.

Die im Ausführungsbeispiel in Düsenbalken 14, 14' angeordneten Düsen/Düsenreihen 7, 7', 8, 8' bzw. 9, 9' können getrennt beaufschlagt und unabhängig voneinander angestellt sowie mit unterschiedlichen Drücken beaufschlagt werden. So können beispielsweise die zum Auftragen des Additivs bzw. Öls auf die Oberseite 10 und/oder Unterseite 11 des Walzgutes 3 vertikal gerichteten Düsen/Düsenreihen 7, 7' mit einem Druck von 2 bis 5 bar, die schräg auf den Walzspalt 15 gerichteten Additiv/Öl-Düsen/Düsenreihen 8, 8' mit einem Druck von 2 bis 7 bar und die die große Menge des Kühlmediums auf die Arbeitswalzen 1, 2 aufbringenden Düsen/Düsenreihen 9, 9' mit einem Druck von 2 bis 10 bar versorgt werden.The nozzles / nozzle rows 7, 7 ', 8', 8 'or 9, 9' arranged in the exemplary embodiment in nozzle bars 14, 14 'can be acted upon separately and set independently of one another and subjected to different pressures. Thus, for example, for applying the additive or oil on the top 10 and / or bottom 11 of the rolled material 3 vertically directed Nozzle / nozzle rows 7, 7 'with a pressure of 2 to 5 bar, the directed obliquely to the nip 15 additive / oil nozzles / nozzle rows 8, 8' with a pressure of 2 to 7 bar and the large amount of the cooling medium the work rolls 1, 2 applying nozzles / nozzle rows 9, 9 'are supplied with a pressure of 2 to 10 bar.

Auf jeden Fall wird die große Menge Kühlmedium durch die im Ausführungsbeispiel als Schott 12, 12' ausgebildete Abdichtung getrennt von der geringen Menge an Additiv/Öl gehalten, das somit voll wirksam im Walzspalt 15 zur Entfaltung gelangt. Zur Verbesserung einerseits der Kühlung und andererseits der Reinigung der Arbeitswalzen 1, 2 sind auch auf der Auslaufseite 6 Düsen/Düsenreihen 13, 13' angeordnet, die auf die Arbeitswalzen 1, 2 gerichtet sind.In any case, the large amount of cooling medium is held separated by the in the embodiment as a bulkhead 12, 12 'formed seal of the small amount of additive / oil, which thus fully effective in the nip 15 reaches the deployment. To improve the one hand, the cooling and the other hand, the cleaning of the work rolls 1, 2 6 nozzles / rows of nozzles 13, 13 'are arranged on the outlet side, which are directed to the work rolls 1, 2.

Claims (9)

  1. Method of cooling and/or lubricating rolls (1, 2) and/or rolling stock (3) in which from a plurality of nozzles / nozzle rows (7, 7', 8, 8', 9, 9') on the one hand a cooling medium is applied to the rolls (1, 2) and on the other hand for lubrication a basic oil is applied to the rolling stock (3) in front of the rolling gap (15), wherein the nozzles / nozzle rows can be turned on individually and independently of one another and the cooling medium is applied separately from the basic oil to the rolls (1, 2) and the basic oil is applied exclusively without water as carrier medium directly to the rolls (3) over the entire width thereof, wherein after application of the basic oil to the rolling stock (3) basic oil without water as carrier medium is additionally applied obliquely in the rolling gap (15); and the basic oil without water applied directly to the rolling stock (3) forms an incompressible, separating layer between the rolling stock and the rolls.
  2. Method according to claim 1, characterised in that the basic oil is applied at the entry side (5) of the rolls (1, 2) to the upper side (10) and/or the lower side (11) of the rolling stock (2).
  3. Method according to claim 1 or 2, characterised in that the cooling medium is applied to the rolls (1, 2) not only at the entry side, but also at the exit side.
  4. Method according to any one of claims 1 to 3, characterised in that cold-rolled rolling stock (3) is cooled and/or lubricated.
  5. Device for cooling and/or lubricating rolls (1, 2) and/or rolling stock (3), in which from a plurality of nozzles / nozzle rows (7, 7', 8, 8', 9, 9') on the one hand a cooling medium is applied to the rolls (1, 2) and on the other hand for lubrication a basic oil is applied to the rolling stock (3) in front of the rolling gap (15), wherein the nozzles / nozzle rows (7, 7', 8, 8', 9, 9') can be turned on individually and independently of one another and a medium blocking means (12, 12') is arranged between the nozzle / nozzle rows (9, 9') for application of the cooling medium to the rolls (1, 2) and the nozzles / nozzle rows (7, 7' or 8, 8') for application of the basic oil to the rolling stock (3), for performance of the method according to claim 1, wherein a basic oil nozzle / nozzle row arrangement (8, 8') is oriented obliquely in the rolling gap (15), characterised in that another basic oil nozzle / nozzle row arrangement (7, 7') is oriented vertically onto the surface of the rolling stock (3).
  6. Device according to claim 5, characterised in that the nozzles / nozzle rows (7, 7', 8, 8', 9, 9') for the cooling medium and for the basic oil are arranged in a nozzle bar (14, 14').
  7. Device according to claim 5 or 6, characterised in that the nozzles / nozzle rows (7, 7', 8, 8', 9, 9') can be turned on independently of one another.
  8. Device according to any one of claims 5 to 7, characterised in that the nozzles / nozzle rows (7, 7', 8, 8', 9, 9') are acted on with different pressures.
  9. Device according to any one of claims 5 to 8, characterised in that cooling medium nozzles / nozzle rows (13, 13') arranged at the exit side are directed onto the rolls (1, 2).
EP05745164.3A 2004-05-18 2005-05-09 Method and device for cooling and/or lubricating cylinders and/or rolling stock Not-in-force EP1750864B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004025058A DE102004025058A1 (en) 2004-05-18 2004-05-18 Method and device for cooling and / or lubrication of rolls and / or rolling stock
PCT/EP2005/004992 WO2005115651A1 (en) 2004-05-18 2005-05-09 Method and device for cooling and/or lubricating cylinders and/or rolling stock

Publications (3)

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EP1750864A1 EP1750864A1 (en) 2007-02-14
EP1750864B1 true EP1750864B1 (en) 2012-08-29
EP1750864B2 EP1750864B2 (en) 2016-01-06

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EP05745164.3A Not-in-force EP1750864B2 (en) 2004-05-18 2005-05-09 Method and device for cooling and/or lubricating cylinders and/or rolling stock

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EP (1) EP1750864B2 (en)
JP (1) JP5525687B2 (en)
CN (1) CN100528388C (en)
DE (1) DE102004025058A1 (en)
RU (1) RU2330737C1 (en)
WO (1) WO2005115651A1 (en)

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Publication number Publication date
WO2005115651A1 (en) 2005-12-08
JP5525687B2 (en) 2014-06-18
CN1956804A (en) 2007-05-02
EP1750864B2 (en) 2016-01-06
EP1750864A1 (en) 2007-02-14
US20070210104A1 (en) 2007-09-13
JP2007537883A (en) 2007-12-27
RU2330737C1 (en) 2008-08-10
CN100528388C (en) 2009-08-19
US7690235B2 (en) 2010-04-06
DE102004025058A1 (en) 2005-12-08
RU2006136010A (en) 2008-04-20

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