EP3150291B1 - Method and device for cooling a roller which is arranged in a rolling stand - Google Patents

Method and device for cooling a roller which is arranged in a rolling stand Download PDF

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Publication number
EP3150291B1
EP3150291B1 EP16187319.5A EP16187319A EP3150291B1 EP 3150291 B1 EP3150291 B1 EP 3150291B1 EP 16187319 A EP16187319 A EP 16187319A EP 3150291 B1 EP3150291 B1 EP 3150291B1
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EP
European Patent Office
Prior art keywords
roll
nozzle
nozzle bar
movement
axis
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EP16187319.5A
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German (de)
French (fr)
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EP3150291A1 (en
Inventor
Axel Barten
Faruk Niksic
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Achenbach Buschhetten GmbH and Co KG
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Achenbach Buschhetten GmbH and Co KG
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    • 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

Definitions

  • the present invention relates to a method for cooling and / or lubricating at least one roll arranged in a roll stand, in which at least one nozzle bar associated with the roll is arranged with at least one row of spray nozzles for impinging a roll surface of the roll with a fluid parallel to a roll axis is changed by means of at least one adjusting gear in its axial distance from the roller, such that the distance between the spray nozzles and the roller surface remains constant with decreasing due to wear of the roller roll diameter.
  • the invention relates to a device for carrying out the method.
  • Devices of the type mentioned serve to act on the roll surfaces of the nip defining work rolls defined with a cooling and / or lubricating medium, which is output from the spray nozzles of the nozzle beam.
  • the spray cone formed by the spray nozzles and the distance between the individual spray nozzles are coordinated so that the on the Rolling surface resulting wetting surfaces form the desired spray pattern, which may be formed depending on the specification in the horizontal direction largely constant or even changing in the horizontal direction, for example by a differentiated loading defined surface areas in the longitudinal axis of the work rolls uneven cooling to define a "thermal roll bale" and thus to influence the flatness of rolled strip material.
  • the spray pattern is formed consistently, so for example overlapping wetting surfaces of adjacent nozzles regardless of the roll diameter always the same size, so that can effectively be prevented as a result of increasing the distance between the nozzle bars and the roll surface of the work rolls, the coverage areas of the wetting surfaces are correspondingly larger and thereby local coolant surplus can arise on the roll surface, which can lead to an undesirable influence on the cooling and a corresponding impairment of the rolling track quality.
  • Known actuating mechanism allows movement of the nozzle beam, in which two each effected with different adjusting cylinders, independent of each other pivotal movements of the nozzle beam are performed.
  • the first of the two actuating cylinders is arranged on the rolling stand and acts on a relative to the rolling stand pivotable first adjusting lever.
  • the second actuating cylinder is arranged on the first adjusting lever and acts on a second lever which can be pivoted relative to the first adjusting lever and which is connected to the nozzle bar.
  • the known complex kinematic arrangement for installing the adjusting gear in the mill requires a considerable installation space.
  • the known actuating gear is only suitable for use with the nozzle bar associated with the upper roller of a pair of work rolls. Due to the regularly installed in the lower roll inlet fitting arise in the area of the lower nozzle beam cramped installation conditions, so that for the lower roller associated nozzle beam only a simple built-up cooling device is used with a correspondingly simpler operating gear with limited movement possibilities.
  • the upper nozzle beam associated actuating gear of the known cooling device only a pivoting of the nozzle bar in the direction of the roll axis of the roller by means of the first actuating cylinder, wherein the second actuating cylinder allows a vertical position correction of the nozzle beam to adjust the desired distance of the spray nozzles relative to the roll surface of the roller.
  • the invention has the features of claim 1.
  • the present invention composed of a pivoting movement and a translational movement feed offers the opportunity simultaneously with the supply of the nozzle bar in the direction of the roll surface to set a defined pivot position of the nozzle beam, such that a defined by the main spray axis of the spray nozzles spray axis remains aligned during wear of the roller on the roll axis.
  • the translational movement of the pivoting movement of the nozzle beam is superimposed, such that the pivoting movement of the nozzle bar is carried out eccentrically to a bearing axis of the nozzle beam on a side plate of the rolling stand, wherein moves the longitudinal axis of the nozzle beam during the pivoting movement to the roll axis, and the nozzle beam during the eccentric pivoting movement for changing a spray axis formed between the spray axis and the horizontal axis performs the rotation about its longitudinal axis in the opposite direction.
  • the translational movement of the nozzle bar takes place simultaneously with the pivoting movement of the nozzle bar, so that a drive device for carrying out the movement with the actuating mechanism is sufficient.
  • Serving for the storage of the nozzle beam side plate can be fixedly arranged on the rolling stand or be movable or pivotable relative to the rolling stand.
  • two actuating gear are coupled by a linkage to perform a synchronous movement, wherein the actuating gear are each associated with one of two defining a nip rollers of a work roll assembly, such that the movement of the nozzle beam symmetrical to a running through the nip Rolling line is done.
  • the coupling gear allows in addition to a synchronous execution of the feed movements of the upper nozzle beam and the lower nozzle beam drive both actuating gear via a common drive means.
  • both nozzle bars are moved by means of a drive device acting on the coupling gear.
  • the drive of the coupling mechanism is effected by means of a drive device acting in the rolling line, since a setting cylinder can thus be arranged in the roll gap plane in a particularly space-saving design.
  • the inventive device for cooling and / or lubricating at least one roller arranged in a roll stand has the features of claim 6.
  • the nozzle bar for carrying out the pivoting movement is rotatably mounted on a rotatably mounted on a side plate of the rolling stand, driven by a rotary drive eccentric, and the nozzle bar is movably connected to the rolling mill to perform the translational movement via a slotted to the nip guide link with the rolling mill.
  • the eccentric When the eccentric is designed as an eccentric pin, which rotatable with an outer pin member on the side plate of the rolling mill and is arranged with an inner pin member rotatably mounted on the nozzle beam, the eccentric can be carried out in a particularly space-saving manner.
  • the slotted guide has a arranged on the side plate of the roll stand groove and arranged on the nozzle bar sliding block, so that the design of the slotted guide without a substantial increase in the mass of the moving by means of the actuating gear nozzle bar.
  • the device comprises a second actuating gear, wherein both actuating gears each interact with one of two parallel nozzle bars, the nozzle bars are each associated with one of two defining a nip rollers of a work roll assembly, and wherein the actuating gear via a coupling gear of a common drive means are driven, such that the movement of the nozzle bars takes place symmetrically to a nip plane, both the upper roller and the lower roller of the work roll assembly can be applied in the same way defined with a cooling fluid.
  • a translational drive device acting on the coupling gear in the rolling line is provided for executing a common drive device of the nozzle bar, so that, for example, a setting cylinder can be arranged in the plane of the rolling line to save space.
  • a work roll assembly 11 arranged in a roll stand 10 is shown with two rolls 12, 13 which are each supported by a support roll 14.
  • rollers 12, 13 of the work roll assembly 11 define by their distance from each other a nip 15 through which a material web not shown here is conveyed.
  • inlet region 41 is located upstream of the roll gap, for example, in the Fig. 3 and 6 recognizable inlet fitting 16, which in the present case in addition to a plurality of predominantly below a plane defined by a rolling line 43 guide rollers 25 comprises an air slide 17, which allows the application of a rolling line in the rolling line 43 fed material web with a Tragluftpolster to the threading a material web start into the nip 15 to simplify.
  • a roll cooling device 18 With an upper nozzle beam 19 and a lower nozzle beam 20, which, as in Fig. 3 illustrated three each horizontally, ie in the present case perpendicular to the plane of the drawing aligned rows of nozzles 21, 22 and 23, each having a plurality of spray nozzles 24, which allow loading of a roller surface 52 of the rollers 12, 13 with a cooling fluid.
  • FIG. 3 shows, in particular because of the adjacent to the nip 15 required arrangement of the roll nip valve 16 narrow space for the arrangement of the nozzle bars 19, 20 in the inlet region 41 of the nip 15th
  • the nozzle bars 19, 20 are rotatably mounted in bearing receivers 26 which are fixedly connected to a side plate 27 of the roll stand 10.
  • bearing receivers 26 For rotatably supporting the nozzle bars 19, 20 are formed in the bearing receivers 26 designed as sleeves eccentric pin 28 which rotatably received with an outer pin member 29 rotatably in the bearing holder 26 and with an inner pin member 30 in a bearing end 31 of the nozzle beam 19, 20.
  • eccentric drive lever 32 With the outer pin member 29 of the eccentric pin 28 formed here as an eccentric drive lever 32 is fixedly connected via a hinge 33 articulated to a first lever member end 36 of a lever member 34 via a second lever member end 37 and a connector 38 is a non-positive connection a positioning cylinder 39 of a translational drive device 40 which is arranged on a side plate 27 of the roll stand 10. To define a rectilinear translational movement of the actuating cylinder 39, this is provided with a parallel guide 49.
  • lever member 34 forms a first element of a here designed as a toggle coupling mechanism 35, the one second lever member 34 for frictionally pivotal connection with a drive lever 32 of a provided for supporting the lower nozzle beam 20 eccentric pin 28 has.
  • a gate groove 42 is formed on the bearing seat 26, wherein in the present case, the bearing seat 26 for forming the slide groove 42 a particular in Fig. 2 having gate block 54 which simultaneously forms a traverse connecting the bearing receptacle 26 of the upper nozzle bar 19 with the bearing receptacle 26 of the lower nozzle bar 20.
  • the nozzle bar 19 has a sliding block 44 designed here as a guide roller in the present case at the bearing end 31 of the nozzle bar 19.
  • Fig. 6 shows, due to the eccentric mounting of the nozzle beam 19 in the bearing seat 26, a longitudinal axis 45 of the nozzle beam 19 offset by the eccentricity e with respect to a bearing axis 46 of the nozzle beam 19 in the bearing seat 26.
  • a spray axis 48 corresponding to one of the main spray axis directions becomes Spray nozzles 24 and the horizontal H trained Sprühachsenwinkel ⁇ 1 at a feed movement of the nozzle beam 19 in the direction of the roller 12 continuously larger.
  • the roller cooling device 18 cooperates with the upper nozzle bar 19 via the actuating gear 50 and with the lower nozzle bar 20 with a second actuating gear 51.
  • the actuating gears 50, 51 are driven by a coupling mechanism 35 designed here as a toggle lever with a common drive device 40 arranged in the rolling line 43.
  • the actuating gear 50, 51 allow both an adjustment of the distance of the spray nozzles 24 of the nozzle bars 19, 20 of a roller surface 52 and an adjustment of the Sprühachsenwinkels to different roller diameters d 1 and d 2 of the rollers 12, 13th
  • Fig. 2 and 3 the positioning of the nozzle bars 19, 20 is shown, which is aligned with the larger roller diameter d1, that is, for example, a rolling diameter corresponding to the new condition of the rollers 12, 13.
  • Fig. 3 shows, between a spray nozzle plane 53 of the nozzle bar 19, 20 and the roller surface 52 of the rollers 12, 13 respectively with respect to the upper nozzle bar 19 and the lower nozzle bar 20 coincident the distance a1 formed.
  • a spray axis angle ⁇ 1 is formed, such that the spray axis 48 is aligned with a roll axis 55, or this cuts.
  • Fig. 4 and 5 is the relative positioning of the nozzle beam 19, 20 with respect to the rollers 12, 13 shown at a reduced roller diameter d2, so after reaching a corresponding wear of the rollers 12, 13.
  • a distance a 2 is set between a roller surface 56 and the spray nozzle plane 53 which is identical to the distance a 1 in order to substantially maintain the size of spray cones 57 of the spray nozzles 24 and thus a correspondingly substantially uniform wetting surface on the reduced roller surface 56 train. If the size of the spray cone 57 is to be more precisely adapted to the smaller roll diameter d 2 , the distance a 2 can even be reduced slightly compared to the distance a 1 , so that the wetting area is correspondingly reduced.
  • a spray axis angle ⁇ 2 is now formed between the spray axis 48 of the spray nozzles 24 of the middle nozzle row 22 and the horizontal, which is increased relative to the spray axis angle ⁇ 1 , so that the spray axis 48 still on the roll axis 55 of the now reduced in diameter rolls 12, 13 is aligned or the roller axes 55 intersects.
  • the nozzle bars 19, 20 are provided with a series arrangement of additional hot nozzles 58, which allow influencing the flatness of rolled strip material, especially in bank areas.
  • the hot nozzles 58 further increase the overall volume of the nozzle bars 19, 20 and further restrict the space available for accommodating the actuating gears 50, 51 in the region of the inlet fitting 16, the actuating gears 50, 51 can be accommodated without function restriction, as shown in the exemplary embodiment.
  • a Wegmesssytem can be used, the nozzle bars 19, 20 depending on the current roll diameter of the rollers 12, 13 for reducing the axial distance between the nozzle bars 19, 20 and the rollers 12, 13, so that virtually a In situ relative positioning of the nozzle bars 19, 20 is possible, which allows even during the ongoing operation of a rolling mill, a change in the distance between the nozzle bars 19, 20 and the roller surface 52.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Description

Die vorliegende Erfindung betrifft ein Verfahren zum Kühlen und/oder Schmieren zumindest einer in einem Walzgerüst angeordneten Walze, bei dem zumindest ein der Walze zugeordneter Düsenbalken, der mit zumindest einer Reihenanordnung von Sprühdüsen zur Beaufschlagung einer Walzenoberfläche der Walze mit einem Fluid parallel zu einer Walzenachse angeordnet ist, mittels zumindest eines Stellgetriebes in seinem Achsabstand zur Walze verändert wird, derart, dass der Abstand zwischen den Sprühdüsen und der Walzenoberfläche bei sich infolge Abnutzung der Walze verringernden Walzendurchmesser konstant bleibt. Darüber hinaus betrifft die Erfindung eine Vorrichtung zur Durchführung des Verfahrens.The present invention relates to a method for cooling and / or lubricating at least one roll arranged in a roll stand, in which at least one nozzle bar associated with the roll is arranged with at least one row of spray nozzles for impinging a roll surface of the roll with a fluid parallel to a roll axis is changed by means of at least one adjusting gear in its axial distance from the roller, such that the distance between the spray nozzles and the roller surface remains constant with decreasing due to wear of the roller roll diameter. Moreover, the invention relates to a device for carrying out the method.

Vorrichtungen der eingangs genannten Art dienen dazu, die Walzenoberflächen der den Walzspalt definierenden Arbeitswalzen definiert mit einem Kühl- und/oder Schmiermedium zu beaufschlagen, das aus den Sprühdüsen des Düsenbalkens ausgegeben wird. Dabei sind die von den Sprühdüsen ausgebildeten Sprühkegel und der Abstand zwischen den einzelnen Sprühdüsen so aufeinander abgestimmt, dass die auf der Walzenoberfläche entstehenden Benetzungsflächen das gewünschte Sprühbild ausbilden, das je nach Vorgabe in horizontaler Richtung weitestgehend konstant oder auch sich in horizontaler Richtung ändernd ausgebildet sein kann, um etwa durch eine differenzierte Beaufschlagung definierte Oberflächenbereiche eine in Längsachsenrichtung der Arbeitswalzen ungleichmäßige Kühlung zur Definition eines "thermischen Walzenballens" und somit zur Beeinflussung der Planheit von gewalztem Bandmaterial zu ermöglichen.Devices of the type mentioned serve to act on the roll surfaces of the nip defining work rolls defined with a cooling and / or lubricating medium, which is output from the spray nozzles of the nozzle beam. The spray cone formed by the spray nozzles and the distance between the individual spray nozzles are coordinated so that the on the Rolling surface resulting wetting surfaces form the desired spray pattern, which may be formed depending on the specification in the horizontal direction largely constant or even changing in the horizontal direction, for example by a differentiated loading defined surface areas in the longitudinal axis of the work rolls uneven cooling to define a "thermal roll bale" and thus to influence the flatness of rolled strip material.

Um mittels der im Walzwerk angeordneten, den Walzspalt definierenden Arbeitswalzen über die gesamte Lebensdauer der Arbeitswalzen gleichbleibende Walzergebnisse bzw. Walzbahnqualitäten erzielen zu können, ist es erforderlich, den Abstand, den die Düsenbalken gegenüber der Walzenoberfläche haben, auch bei einem reduzierten Arbeitswalzendurchmesser, beispielsweise in Folge einer Nachschliff-Bearbeitung der Walzenoberfläche, konstant zu halten. Hierzu ist es bekannt, die Düsenbalken entsprechend der Reduzierung des Walzendurchmessers in Richtung auf die Walzenachse nachzustellen, um die Durchmesserreduzierung zu kompensieren. Hierdurch ist es möglich, dass unabhängig vom aktuellen Durchmesser der Arbeitswalzen das Sprühbild gleichbleibend ausgebildet ist, also beispielsweise einander überdeckende Benetzungsflächen benachbarter Düsen unabhängig vom Walzendurchmesser stets dieselbe Größe aufweisen, so dass wirksam verhindert werden kann, dass in Folge einer Vergrößerung des Abstands zwischen den Düsenbalken und der Walzenoberfläche der Arbeitswalzen die Überdeckungsbereiche der Benetzungsflächen entsprechend größer werden und dadurch lokale Kühlmedienüberschüsse auf der Walzenoberfläche entstehen können, die zu einer unerwünschten Beeinflussung der Kühlung und einer entsprechenden Beeinträchtigung der Walzbahnqualität führen können.In order to be able to achieve uniform rolling results or rolling-stock qualities over the entire service life of the work rolls by means of the rolling rolls arranged in the rolling mill, it is necessary to keep the distance between the jet bars and the roll surface even at a reduced work roll diameter, for example in succession a re-grinding of the roll surface to keep constant. For this purpose, it is known to readjust the nozzle bars in accordance with the reduction of the roll diameter in the direction of the roll axis in order to compensate for the diameter reduction. This makes it possible that regardless of the actual diameter of the work rolls, the spray pattern is formed consistently, so for example overlapping wetting surfaces of adjacent nozzles regardless of the roll diameter always the same size, so that can effectively be prevented as a result of increasing the distance between the nozzle bars and the roll surface of the work rolls, the coverage areas of the wetting surfaces are correspondingly larger and thereby local coolant surplus can arise on the roll surface, which can lead to an undesirable influence on the cooling and a corresponding impairment of the rolling track quality.

Aus der DE 10 2009 040 876 A1 ist ein Verfahren und eine Vorrichtung zur Relativpositionierung eines in einem Walzgerüst angeordneten Düsenbalkens bekannt, wobei die Einstellung der Relativposition des Düsenbalkens gegenüber einer Walzenoberfläche einer im Walzgerüst angeordneten Walze dadurch erfolgt, dass der Düsenbalken mittels eines am Walzgerüst angeordneten Stellgetriebes in seinem Achsabstand zur Walze verändert wird. Hierdurch soll erreicht werden, dass der Abstand zwischen den Sprühdüsen und der Walzenoberfläche insbesondere bei sich infolge Abnutzung der Walze verringerndem Walzendurchmesser konstant bleibt.From the DE 10 2009 040 876 A1 a method and a device for relative positioning of a rolling mill arranged in a nozzle bar is known, wherein the adjustment of the relative position of Nozzle bar with respect to a roll surface of a roller arranged in the roll takes place in that the nozzle bar is changed by means of a rolling mill arranged on the adjusting gear in its axial distance from the roller. This is intended to ensure that the distance between the spray nozzles and the roll surface remains constant, in particular when the roll diameter decreases due to wear of the roll.

Das aus der DE 10 2009 040 876 A1 bekannte Stellgetriebe ermöglicht eine Bewegung des Düsenbalkens, bei der zwei jeweils mit verschiedenen Stellzylindern bewirkte, von einander unabhängige Schwenkbewegungen des Düsenbalkens durchgeführt werden. Dabei ist der erste der beiden Stellzylinder am Walzgerüst angeordnet und wirkt auf einen gegenüber dem Walzgerüst verschwenkbaren ersten Stellhebel. Der zweite Stellzylinder ist an dem ersten Stellhebel angeordnet und wirkt auf einen zweiten gegenüber dem ersten Stellhebel verschwenkbaren Stellhebel, der mit dem Düsenbalken verbunden ist.That from the DE 10 2009 040 876 A1 Known actuating mechanism allows movement of the nozzle beam, in which two each effected with different adjusting cylinders, independent of each other pivotal movements of the nozzle beam are performed. In this case, the first of the two actuating cylinders is arranged on the rolling stand and acts on a relative to the rolling stand pivotable first adjusting lever. The second actuating cylinder is arranged on the first adjusting lever and acts on a second lever which can be pivoted relative to the first adjusting lever and which is connected to the nozzle bar.

Abgesehen davon, dass bei der bekannten Vorrichtung zwei voneinander unabhängig betätigbare Stellzylinder zur Ausführung der Bewegung des Düsenbalkens benötigt werden, erfordert die bekannte aufwendige kinematische Anordnung zur Installation des Stellgetriebes in das Walzgerüst einen erheblichen Installationsraum. Dies führt dazu, dass das bekannte Stellgetriebe lediglich zum Einsatz für den der oberen Walze einer Arbeitswalzenpaarung zugeordneten Düsenbalken geeignet ist. Aufgrund der regelmäßig im Bereich der unteren Walze installierten Einlaufarmatur ergeben sich im Bereich des unteren Düsenbalkens beengte Installationsverhältnisse, so dass für den der unteren Walze zugeordneten Düsenbalken lediglich eine einfache aufgebaute Kühlvorrichtung mit einem entsprechend einfacher aufgebauten Stellgetriebe mit eingeschränkten Bewegungsmöglichkeiten eingesetzt wird.Apart from the fact that in the known device two independently operable actuating cylinder for carrying out the movement of the nozzle beam are required, the known complex kinematic arrangement for installing the adjusting gear in the mill requires a considerable installation space. As a result, the known actuating gear is only suitable for use with the nozzle bar associated with the upper roller of a pair of work rolls. Due to the regularly installed in the lower roll inlet fitting arise in the area of the lower nozzle beam cramped installation conditions, so that for the lower roller associated nozzle beam only a simple built-up cooling device is used with a correspondingly simpler operating gear with limited movement possibilities.

Darüber hinaus ermöglicht selbst das komplex aufgebaute, dem oberen Düsenbalken zugeordnete Stellgetriebe der bekannten Kühlvorrichtung lediglich ein Beischwenken des Düsenbalkens in Richtung der Walzenachse der Walze mittels des ersten Stellzylinders, wobei der zweite Stellzylinder eine vertikale Lagekorrektur des Düsenbalkens ermöglicht, um den gewünschten Abstand der Sprühdüsen gegenüber der Walzenoberfläche der Walze einzustellen. Der Oberbegriff der Ansprüche 1 und 6 basiert jeweils auf der DE 10 2009 040 876 A1 . Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein Verfahren beziehungsweise eine Vorrichtung vorzuschlagen, das beziehungsweise die eine exaktere Ausrichtung der Sprühdüsen gegenüber der Walzenoberfläche und eine platzsparende Ausgestaltung des Stellgetriebes ermöglicht.In addition, even allows complex constructed, the upper nozzle beam associated actuating gear of the known cooling device only a pivoting of the nozzle bar in the direction of the roll axis of the roller by means of the first actuating cylinder, wherein the second actuating cylinder allows a vertical position correction of the nozzle beam to adjust the desired distance of the spray nozzles relative to the roll surface of the roller. The preamble of claims 1 and 6 is based on the respective DE 10 2009 040 876 A1 , Based on this prior art, the present invention seeks to propose a method or a device that allows a more precise alignment of the spray nozzles relative to the roll surface and a space-saving design of the adjusting gear.

Zur Lösung der vorstehenden Aufgabe weist die Erfindung die Merkmale des Anspruchs 1 auf.To achieve the above object, the invention has the features of claim 1.

Im Gegensatz zu dem aus dem Stand der Technik bekannten Verfahren, das ein Stellgetriebe aufweist, das eine aus zwei Schwenkbewegungen zusammengesetzte Zustellbewegung des Düsenbalkens in Richtung auf die Walzenoberfläche der Walze ermöglicht, bietet die erfindungsgemäß aus einer Schwenkbewegung und einer Translationsbewegung zusammengesetzte Zustellbewegung die Möglichkeit, gleichzeitig mit der Zuführung des Düsenbalkens in Richtung der Walzenoberfläche eine definierte Schwenkstellung des Düsenbalkens einzustellen, derart, dass eine durch die Hauptsprühachsenrichtung der Sprühdüsen definierte Sprühachse während der Abnutzung der Walze auf die Walzenachse ausgerichtet bleibt.In contrast to the known from the prior art method, which has a control gear that allows a composed of two pivoting movements feed movement of the nozzle bar in the direction of the roll surface of the roller, the present invention composed of a pivoting movement and a translational movement feed offers the opportunity simultaneously with the supply of the nozzle bar in the direction of the roll surface to set a defined pivot position of the nozzle beam, such that a defined by the main spray axis of the spray nozzles spray axis remains aligned during wear of the roller on the roll axis.

Dadurch, dass bei einer Abnutzung der Walze nicht nur der Abstand zwischen den Sprühdüsen des Düsenbalkens und der Walzenoberfläche erhalten bleibt, sondern darüber hinaus auch die Ausrichtung der Sprühdüsen auf die Walzenachse erhalten bleibt, ist es nun tatsächlich möglich, unabhängig vom Abnutzungsgrad der Walze ein stets übereinstimmendes Sprühbild auf der Walzenoberfläche auszubilden.Due to the fact that not only the distance between the spray nozzles of the nozzle beam and the roll surface is maintained during wear of the roller, but also the alignment of the spray nozzles is maintained on the roll axis, it is now possible, regardless of the degree of wear of the roller always form a matching spray pattern on the roll surface.

Vorzugsweise ist die Translationsbewegung der Schwenkbewegung des Düsenbalkens überlagert, derart, dass die Schwenkbewegung des Düsenbalkens exzentrisch zu einer Lagerachse des Düsenbalkens an einem Seitenschild des Walzgerüstes erfolgt, wobei sich die Längsachse des Düsenbalkens während der Schwenkbewegung auf die Walzenachse zu bewegt, und der Düsenbalken während der exzentrischen Schwenkbewegung zur Änderung eines zwischen der Sprühachse und der Horizontalen ausgebildeten Sprühachsenwinkels die Drehung um seine Längsachse in Gegenrichtung ausführt. Hierdurch erfolgt die Translationsbewegung des Düsenbalkens gleichzeitig mit der Schwenkbewegung des Düsenbalkens, so dass eine Antriebseinrichtung zur Ausführung der Bewegung mit dem Stellgetriebe ausreichend ist. Das zur Lagerung des Düsenbalkens dienende Seitenschild kann fest am Walzgerüst angeordnet oder auch gegenüber dem Walzgerüst verfahrbar oder verschwenkbar sein.Preferably, the translational movement of the pivoting movement of the nozzle beam is superimposed, such that the pivoting movement of the nozzle bar is carried out eccentrically to a bearing axis of the nozzle beam on a side plate of the rolling stand, wherein moves the longitudinal axis of the nozzle beam during the pivoting movement to the roll axis, and the nozzle beam during the eccentric pivoting movement for changing a spray axis formed between the spray axis and the horizontal axis performs the rotation about its longitudinal axis in the opposite direction. As a result, the translational movement of the nozzle bar takes place simultaneously with the pivoting movement of the nozzle bar, so that a drive device for carrying out the movement with the actuating mechanism is sufficient. Serving for the storage of the nozzle beam side plate can be fixedly arranged on the rolling stand or be movable or pivotable relative to the rolling stand.

Gemäß einer besonders bevorzugten Ausführungsform des Verfahrens werden mittels eines Koppelgetriebes zwei Stellgetriebe zur Ausführung einer synchronen Bewegung gekoppelt, wobei die Stellgetriebe jeweils einer von zwei einen Walzspalt definierenden Walzen einer Arbeitswalzenanordnung zugeordnet sind, derart, dass die Bewegung des Düsenbalkens symmetrisch zu einer durch den Walzspalt verlaufenden Walzlinie erfolgt. Hierdurch ist es vorteilhaft möglich, die vorstehend erläuterte Zustellbewegung des Düsenbalkens, die aus einer Translationsbewegung überlagert mit einer Schwenkbewegung des Düsenbalkens zusammengesetzt ist, sowohl betreffend den oberen Düsenbalken als auch betreffend den unteren Düsenbalken durchzuführen, so dass beide Walzen einer Arbeitswalzenanordnung in übereinstimmender Weise mit dem Kühlfluid beaufschlagt werden und demzufolge sowohl auf der oberen Walze der Arbeitswalzenanordnung als auch auf der unteren Walze der Arbeitswalzenanordnung ein übereinstimmendes Sprühbild erzeugt wird. Dabei ermöglicht das Koppelgetriebe neben einer synchronen Ausführung der Zustellbewegungen des oberen Düsenbalkens und des unteren Düsenbalkens einen Antrieb beider Stellgetriebe über eine gemeinsame Antriebseinrichtung.According to a particularly preferred embodiment of the method, two actuating gear are coupled by a linkage to perform a synchronous movement, wherein the actuating gear are each associated with one of two defining a nip rollers of a work roll assembly, such that the movement of the nozzle beam symmetrical to a running through the nip Rolling line is done. In this way, it is advantageously possible to carry out the above-explained feed movement of the nozzle bar, which is composed of a translational movement with a pivoting movement of the nozzle bar, both concerning the upper nozzle bar and concerning the lower nozzle bar, so that both rollers of a Work roll arrangement are acted upon in a consistent manner with the cooling fluid and consequently a matching spray pattern is produced both on the upper roll of the work roll assembly and on the lower roll of the work roll assembly. In this case, the coupling gear allows in addition to a synchronous execution of the feed movements of the upper nozzle beam and the lower nozzle beam drive both actuating gear via a common drive means.

Vorzugsweise werden daher beide Düsenbalken mittels einer auf das Koppelgetriebe wirkenden Antriebseinrichtung bewegt.Preferably, therefore, both nozzle bars are moved by means of a drive device acting on the coupling gear.

Besonders bevorzugt ist es, wenn der Antrieb des Koppelgetriebes mittels einer in der Walzlinie wirkenden Antriebseinrichtung erfolgt, da somit in einer besonders platzsparenden Ausführung ein Stellzylinder in der Walzspaltebene angeordnet werden kann.It is particularly preferred if the drive of the coupling mechanism is effected by means of a drive device acting in the rolling line, since a setting cylinder can thus be arranged in the roll gap plane in a particularly space-saving design.

Die erfindungsgemäße Vorrichtung zum Kühlen und/oder Schmieren zumindest einer in einem Walzgerüst angeordneten Walze weist die Merkmale des Anspruchs 6 auf.The inventive device for cooling and / or lubricating at least one roller arranged in a roll stand has the features of claim 6.

Vorzugsweise ist der Düsenbalken zur Ausführung der Schwenkbewegung auf einer drehbar an einem Seitenschild des Walzgerüstes angeordneten, mittels eines Drehantriebs antreibbaren Exzentereinrichtung drehbar gelagert, und der Düsenbalken ist zur Ausführung der Translationsbewegung über eine zum Walzspalt geneigte Kulissenführung mit dem Walzgerüst beweglich verbunden.Preferably, the nozzle bar for carrying out the pivoting movement is rotatably mounted on a rotatably mounted on a side plate of the rolling stand, driven by a rotary drive eccentric, and the nozzle bar is movably connected to the rolling mill to perform the translational movement via a slotted to the nip guide link with the rolling mill.

Wenn die Exzentereinrichtung als Exzenterzapfen ausgeführt ist, der mit einem äußeren Zapfenteil drehbar am Seitenschild des Walzgerüstes und mit einem inneren Zapfenteil drehbar am Düsenbalken angeordnet ist, lässt sich die Exzentereinrichtung in besonders platzsparender Weise ausführen.When the eccentric is designed as an eccentric pin, which rotatable with an outer pin member on the side plate of the rolling mill and is arranged with an inner pin member rotatably mounted on the nozzle beam, the eccentric can be carried out in a particularly space-saving manner.

Vorzugsweise weist die Kulissenführung eine am Seitenschild des Walzgerüstes angeordnete Kulissennut und einen am Düsenbalken angeordneten Kulissenstein auf, so dass die Ausgestaltung der Kulissenführung ohne eine wesentliche Erhöhung der Masse des mittels des Stellgetriebes bewegten Düsenbalken ist.Preferably, the slotted guide has a arranged on the side plate of the roll stand groove and arranged on the nozzle bar sliding block, so that the design of the slotted guide without a substantial increase in the mass of the moving by means of the actuating gear nozzle bar.

Wenn gemäß einer besonders bevorzugten Ausführungsform die Vorrichtung ein zweites Stellgetriebe aufweist, wobei beide Stellgetriebe jeweils mit einem von zwei parallelen Düsenbalken zusammenwirken, wobei die Düsenbalken jeweils einer von zwei einen Walzspalt definierenden Walzen einer Arbeitswalzenanordnung zugeordnet sind, und wobei die Stellgetriebe über ein Koppelgetriebe von einer gemeinsamen Antriebseinrichtung angetrieben werden, derart, dass die Bewegung der Düsenbalken symmetrisch zu einer Walzspaltzebene erfolgt, kann sowohl die obere Walze als auch die untere Walze der Arbeitswalzenanordnung in gleicher Weise definiert mit einem Kühlfluid beaufschlagt werden.If according to a particularly preferred embodiment, the device comprises a second actuating gear, wherein both actuating gears each interact with one of two parallel nozzle bars, the nozzle bars are each associated with one of two defining a nip rollers of a work roll assembly, and wherein the actuating gear via a coupling gear of a common drive means are driven, such that the movement of the nozzle bars takes place symmetrically to a nip plane, both the upper roller and the lower roller of the work roll assembly can be applied in the same way defined with a cooling fluid.

Vorzugsweise ist zur Ausführung einer gemeinsamen Antriebseinrichtung der Düsenbalken eine auf das Koppelgetriebe in der Walzlinie wirkende translatorische Antriebseinrichtung vorgesehen, so dass beispielsweise ein Stellzylinder platzsparend in der Ebene der Walzlinie angeordnet werden kann.Preferably, a translational drive device acting on the coupling gear in the rolling line is provided for executing a common drive device of the nozzle bar, so that, for example, a setting cylinder can be arranged in the plane of the rolling line to save space.

Nachfolgend wird eine bevorzugte Ausführungsform des Verfahrens mit Erläuterung der dabei zum Einsatz kommenden Vorrichtung anhand der Zeichnung näher erläutert.Hereinafter, a preferred embodiment of the method with explanation of the case coming to use device is explained in detail with reference to the drawing.

Es zeigen:

Fig. 1
Ein Walzgerüst mit einer Arbeitswalzenanordnung und einer Walzenkühlvorrichtung;
Fig. 2
die Walzenkühlvorrichtung in Seitenansicht mit auf einen großen Walzendurchmesser der Walzen der Arbeitswalzenanordnung ausgerichteten Düsenbalken;
Fig. 3
die in Fig. 2 dargestellte Walzenkühlvorrichtung in einer Schnittdarstellung gemäß Schnittlinienverlauf III-III in Fig. 1 ;
Fig. 4
die Walzenkühlvorrichtung mit auf den kleineren Durchmesser der Walzen der Arbeitswalzenanordnung ausgerichteten Düsenbalken;
Fig. 5
die in Fig. 4 dargestellte Walzenkühlvorrichtung in einer Schnittdarstellung gemäß Schnittlinienverlauf V-V in Fig. 1 ;
Fig. 6
eine Teilschnittdarstellung der Walzenkühlvorrichtung gemäß Schnittlinienverlauf VI-VI in Fig. 4 .
Show it:
Fig. 1
A rolling stand with a work roll assembly and a roll cooling device;
Fig. 2
the roll cooling device in side view with aligned to a large roll diameter of the rolls of the work roll assembly nozzle beam;
Fig. 3
in the Fig. 2 shown roller cooling device in a sectional view according to section line III-III in Fig. 1 ;
Fig. 4
the roller cooling device with aligned to the smaller diameter of the rollers of the work roll assembly nozzle bar;
Fig. 5
in the Fig. 4 illustrated roller cooling device in a sectional view according to section line VV in Fig. 1 ;
Fig. 6
a partial sectional view of the roll cooling device according to section line VI-VI in Fig. 4 ,

In den Fig. 1 und 2 ist eine in einem Walzgerüst 10 angeordnete Arbeitswalzenanordnung 11 mit zwei Walzen 12, 13 dargestellt, die jeweils von einer Stützwalze 14 abgestützt werden.In the Fig. 1 and 2 a work roll assembly 11 arranged in a roll stand 10 is shown with two rolls 12, 13 which are each supported by a support roll 14.

Die Walzen 12, 13 der Arbeitswalzenanordnung 11 definieren durch ihren Abstand voneinander einen Walzspalt 15, durch den eine hier nicht näher dargestellte Materialbahn gefördert wird. In einem Einlaufbereich 41 befindet sich dem Walzspalt vorgeordnet eine beispielsweise in den Fig. 3 und 6 erkennbare Einlaufarmatur 16, die im vorliegenden Fall neben einer Mehrzahl von überwiegend unterhalb einer durch eine Walzlinie 43 definierten Ebene angeordneten Leitrollen 25 ein Luftleittisch 17 umfasst, der die Beaufschlagung einer in der Walzlinie 43 dem Walzspalt 15 zugeführten Materialbahn mit einem Tragluftpolster ermöglicht, um das Einfädeln eines Materialbahnanfangs in den Walzspalt 15 zu vereinfachen.The rollers 12, 13 of the work roll assembly 11 define by their distance from each other a nip 15 through which a material web not shown here is conveyed. In an inlet region 41 is located upstream of the roll gap, for example, in the Fig. 3 and 6 recognizable inlet fitting 16, which in the present case in addition to a plurality of predominantly below a plane defined by a rolling line 43 guide rollers 25 comprises an air slide 17, which allows the application of a rolling line in the rolling line 43 fed material web with a Tragluftpolster to the threading a material web start into the nip 15 to simplify.

Zwischen der Einlaufarmatur 16 und dem Walzspalt 15 befindet sich eine Walzenkühlvorrichtung 18, mit einem oberen Düsenbalken 19 und einem unteren Düsenbalken 20, die, wie etwa in Fig. 3 dargestellt drei jeweils horizontal, also im vorliegenden Fall senkrecht zur Zeichnungsebene ausgerichtete Düsenreihen 21, 22 und 23 mit jeweils einer Mehrzahl von Sprühdüsen 24 aufweisen, die eine Beaufschlagung einer Walzenoberfläche 52 der Walzen 12, 13 mit einem Kühlfluid ermöglichen.Between the inlet fitting 16 and the nip 15 there is a roll cooling device 18, with an upper nozzle beam 19 and a lower nozzle beam 20, which, as in Fig. 3 illustrated three each horizontally, ie in the present case perpendicular to the plane of the drawing aligned rows of nozzles 21, 22 and 23, each having a plurality of spray nozzles 24, which allow loading of a roller surface 52 of the rollers 12, 13 with a cooling fluid.

Wie etwa Fig. 3 zeigt, ergeben sich insbesondere aufgrund der benachbart zum Walzspalt 15 erforderlichen Anordnung der Walzspalteinlaufarmatur 16 beengte Raumverhältnisse für die Anordnung der Düsenbalken 19, 20 im Einlaufbereich 41 des Walzspaltes 15.Such as Fig. 3 shows, in particular because of the adjacent to the nip 15 required arrangement of the roll nip valve 16 narrow space for the arrangement of the nozzle bars 19, 20 in the inlet region 41 of the nip 15th

Wie aus einer Zusammenschau der Fig. 2 und 6 deutlich wird, sind die Düsenbalken 19, 20 drehbar in Lageraufnahmen 26 gelagert, die fest mit einem Seitenschild 27 des Walzgerüsts 10 verbunden sind. Zur drehbaren Lagerung der Düsenbalken 19, 20 sind in den Lageraufnahmen 26 hier als Hülsen ausgebildeten Exzenterzapfen 28 angeordnet, die mit einem äußeren Zapfenteil 29 drehbar in der Lageraufnahme 26 und mit einem inneren Zapfenteil 30 drehbar in einem Lagerende 31 der Düsenbalken 19, 20 aufgenommen.As if from a synopsis of Fig. 2 and 6 becomes clear, the nozzle bars 19, 20 are rotatably mounted in bearing receivers 26 which are fixedly connected to a side plate 27 of the roll stand 10. For rotatably supporting the nozzle bars 19, 20 are formed in the bearing receivers 26 designed as sleeves eccentric pin 28 which rotatably received with an outer pin member 29 rotatably in the bearing holder 26 and with an inner pin member 30 in a bearing end 31 of the nozzle beam 19, 20.

Mit dem äußeren Zapfenteil 29 des Exzenterzapfens 28 ist ein hier als Exzenterscheibe ausgebildeter Antriebshebel 32 fest verbunden, der über ein Drehgelenk 33 gelenkig an ein erstes Hebelgliedende 36 eines Hebelgliedes 34 angeschlossen ist, das über ein zweites Hebelgliedende 37 und ein Anschlussstück 38 eine kraftschlüssige Verbindung zu einem Stellzylinder 39 einer translatorischen Antriebseinrichtung 40 ermöglicht, die an einem Seitenschild 27 des Walzgerüst 10 angeordnet ist. Zur Definition einer geradlinigen translatorischen Bewegung des Stellzylinders 39 ist dieser mit einer Parallelführung 49 versehen.With the outer pin member 29 of the eccentric pin 28 formed here as an eccentric drive lever 32 is fixedly connected via a hinge 33 articulated to a first lever member end 36 of a lever member 34 via a second lever member end 37 and a connector 38 is a non-positive connection a positioning cylinder 39 of a translational drive device 40 which is arranged on a side plate 27 of the roll stand 10. To define a rectilinear translational movement of the actuating cylinder 39, this is provided with a parallel guide 49.

Wie insbesondere Fig. 2 zeigt, bildet das Hebelglied 34 ein erstes Element eines hier als Kniehebels ausgeführten Koppelgetriebes 35, das ein zweites Hebelglied 34 zur kraftschlüssigen drehgelenkigen Verbindung mit einem Antriebshebel 32 eines zur Lagerung des unteren Düsenbalkens 20 vorgesehenen Excenterzapfens 28 aufweist.In particular Fig. 2 shows, the lever member 34 forms a first element of a here designed as a toggle coupling mechanism 35, the one second lever member 34 for frictionally pivotal connection with a drive lever 32 of a provided for supporting the lower nozzle beam 20 eccentric pin 28 has.

In gleicher Weise wie der obere Düsenbalken 19 ist auch der untere Düsenbalken 20 über den Exzenterzapfen 28, den Antriebshebel 32 und das Hebelglied 34 über das Anschlussstück 38 kraftschlüssig mit dem Stellzylinder 39 verbunden.In the same way as the upper nozzle bar 19 and the lower nozzle bar 20 via the eccentric pin 28, the drive lever 32 and the lever member 34 via the connecting piece 38 is positively connected to the actuating cylinder 39.

Wie Fig. 6 zeigt, ist an der Lageraufnahme 26 eine Kulissennut 42 ausgebildet, wobei im vorliegenden Fall die Lageraufnahme 26 zur Ausbildung der Kulissennut 42 einen insbesondere in Fig. 2 dargestellten Kulissenblock 54 aufweist, der gleichzeitig eine die Lageraufnahme 26 des oberen Düsenbalkens 19 mit der Lageraufnahme 26 des unteren Düsenbalkens 20 verbindende Traverse ausbildet.As Fig. 6 shows, a gate groove 42 is formed on the bearing seat 26, wherein in the present case, the bearing seat 26 for forming the slide groove 42 a particular in Fig. 2 having gate block 54 which simultaneously forms a traverse connecting the bearing receptacle 26 of the upper nozzle bar 19 with the bearing receptacle 26 of the lower nozzle bar 20.

Zur Führung in der Kulissennut 42 weist der Düsenbalken 19 einen im vorliegenden Fall am Lagerende 31 des Düsenbalkens 19, hier als Führungsrolle ausgebildeten Kulissenstein 44 auf.For guidance in the cam groove 42, the nozzle bar 19 has a sliding block 44 designed here as a guide roller in the present case at the bearing end 31 of the nozzle bar 19.

Wie Fig. 6 zeigt, ist aufgrund der exzentrischen Lagerung des Düsenbalkens 19 in der Lageraufnahme 26 eine Längsachse 45 des Düsenbalkens 19 um die Exzentrizität e gegenüber einer Lagerachse 46 des Düsenbalkens 19 in der Lageraufnahme 26 versetzt. Aufgrund der Exzentrizität e erfolgt bei einer Schwenkbewegung des Düsenbalkens 19 ausgelöst über das im Drehgelenk 33 des Antriebshebels 32 angelenkten Hebelglied 34 nicht nur eine Schwenkbewegung des Düsenbalkens um die Lagerachse 46, sondern gleichzeitig auch eine Verlagerung seiner Längsachse 45, wobei aufgrund der zum Walzspalt 15 geneigten Ausrichtung der Kulissennut 42 während der Translationsbewegung des Kulissensteins 44 in der Kulissennut 42 bei einer Drehung des Exzenterzapfens 28 im Uhrzeigersinn eine Gegendrehung des Düsenbalkens 19 entgegen dem Uhrzeigersinn erfolgt. Aufgrund dieser komplexen Bewegung wird ein zwischen einer der Hauptsprühachsenrichtung entsprechenden Sprühachse 48 der Sprühdüsen 24 und der Horizontalen H ausgebildeter Sprühachsenwinkel α1 bei einer Zustellbewegung des Düsenbalkens 19 in Richtung auf die Walze 12 kontinuierlich größer. Wie sich aus dem Vorstehenden ergibt, bilden im Falle des erläuterten Ausführungsbeispiels der Antriebshebel 32, der Excenterzapfen 28, der am Düsenbalken 19 angeordnete und in die Kulissennut 42 eingreifende Kulissenstein 44 Elemente eines Stellgetriebes 50 zur Ausführung einer definierten Bewegung des Düsenbalkens 19.As Fig. 6 shows, due to the eccentric mounting of the nozzle beam 19 in the bearing seat 26, a longitudinal axis 45 of the nozzle beam 19 offset by the eccentricity e with respect to a bearing axis 46 of the nozzle beam 19 in the bearing seat 26. Due to the eccentricity e takes place during a pivoting movement of the nozzle bar 19 triggered by the pivot 33 of the drive lever 32 hinged lever member 34 not only pivotal movement of the nozzle bar about the bearing axis 46, but at the same time a displacement of its longitudinal axis 45, due to the inclined to the nip 15 Orientation of the cam groove 42 during the translational movement of the sliding block 44 in the cam groove 42 during a rotation of the eccentric pin 28 clockwise counter rotation of the nozzle beam 19 is counterclockwise. Due to this complex movement, a spray axis 48 corresponding to one of the main spray axis directions becomes Spray nozzles 24 and the horizontal H trained Sprühachsenwinkel α 1 at a feed movement of the nozzle beam 19 in the direction of the roller 12 continuously larger. As is apparent from the above, form in the case of the illustrated embodiment, the drive lever 32, the eccentric pin 28, arranged on the nozzle beam 19 and engaging in the cam groove 42 sliding block 44 elements of a control gear 50 for performing a defined movement of the nozzle beam 19th

Die Fig. 2 und 3 einerseits und die Fig. 4 und 5 andererseits zeigen exemplarisch für zwei unterschiedliche Walzendurchmesser d1 und d2, wie die Walzenkühlvorrichtung 18 über das Stellgetriebe 50 mit der oberen Düsenbalken 19 und ein zweites Stellgetriebe 51 mit der unteren Düsenbalken 20 zusammenwirkt. Dabei werden die Stellgetriebe 50, 51 über ein hier als Kniehebel ausgebildetes Koppelgetriebe 35 mit einer gemeinsamen, in der Walzlinie 43 angeordneten Antriebseinrichtung 40 angetrieben. Die Stellgetriebe 50, 51 ermöglichen sowohl eine Anpassung des Abstandes der Sprühdüsen 24 der Düsenbalken 19, 20 von einer Walzenoberfläche 52 als auch eine Anpassung des Sprühachsenwinkels an unterschiedliche Walzendurchmesser d1 und d2 der Walzen 12, 13.The Fig. 2 and 3 on the one hand and the Fig. 4 and 5 On the other hand, as an example for two different roller diameters d1 and d2, the roller cooling device 18 cooperates with the upper nozzle bar 19 via the actuating gear 50 and with the lower nozzle bar 20 with a second actuating gear 51. In this case, the actuating gears 50, 51 are driven by a coupling mechanism 35 designed here as a toggle lever with a common drive device 40 arranged in the rolling line 43. The actuating gear 50, 51 allow both an adjustment of the distance of the spray nozzles 24 of the nozzle bars 19, 20 of a roller surface 52 and an adjustment of the Sprühachsenwinkels to different roller diameters d 1 and d 2 of the rollers 12, 13th

In den Fig. 2 und 3 ist die Positionierung der Düsenbalken 19, 20 dargestellt, die auf den größeren Walzendurchmesser d1 ausgerichtet ist, also beispielsweise einen Walzdurchmesser, der dem Neuzustand der Walzen 12, 13 entspricht. Wie Fig. 3 zeigt, ist zwischen einer Sprühdüsenebene 53 der Düsenbalken 19, 20 und der Walzenoberfläche 52 der Walzen 12, 13 jeweils betreffend den oberen Düsenbalken 19 und den unteren Düsenbalken 20 übereinstimmend der Abstand a1 ausgebildet. Darüber hinaus ist sowohl betreffend den oberen Düsenbalken 19 als auch betreffend den unteren Düsenbalken 20 zwischen der Sprühachse 48 der Sprühdüsen 24 der mittleren Düsenreihe 22 und der Horizontalen H ein Sprühachsenwinkel α1 ausgebildet, derart, dass die Sprühachse 48 auf eine Walzenachse 55 ausgerichtet ist, beziehungsweise diese schneidet.In the Fig. 2 and 3 the positioning of the nozzle bars 19, 20 is shown, which is aligned with the larger roller diameter d1, that is, for example, a rolling diameter corresponding to the new condition of the rollers 12, 13. As Fig. 3 shows, between a spray nozzle plane 53 of the nozzle bar 19, 20 and the roller surface 52 of the rollers 12, 13 respectively with respect to the upper nozzle bar 19 and the lower nozzle bar 20 coincident the distance a1 formed. In addition, both with respect to the upper nozzle bar 19 and with respect to the lower nozzle bar 20 between the spray axis 48 of the spray nozzle 24 of the central nozzle row 22 and the horizontal H a spray axis angle α 1 is formed, such that the spray axis 48 is aligned with a roll axis 55, or this cuts.

In den Fig. 4 und 5 ist die Relativpositionierung der Düsenbalken 19, 20 gegenüber den Walzen 12, 13 bei einem reduzierten Walzendurchmesser d2 dargestellt, also nach Erreichen einer entsprechenden Abnutzung der Walzen 12, 13. Dabei zeigt Fig. 5 , dass zwischen einer Walzenoberfläche 56 und der Sprühdüsenebene 53 ein Abstand a2 eingestellt ist, der identisch mit dem Abstand a1 ist, um die Größe von Sprühkegeln 57 der Sprühdüsen 24 im Wesentlichen beizubehalten und damit eine entsprechend im Wesentlichen gleichbleibende Benetzungsoberfläche auf der verkleinerten Walzenoberfläche 56 auszubilden. Wenn darüber die Größe der Sprühkegel 57 an den geringeren Walzendurchmessers d2 noch genauer angepasst werden soll, kann der Abstand a2 gegenüber dem Abstand a1 sogar geringfügig reduziert werden, so dass entsprechend die Benetzungsfläche reduziert wird.In the Fig. 4 and 5 is the relative positioning of the nozzle beam 19, 20 with respect to the rollers 12, 13 shown at a reduced roller diameter d2, so after reaching a corresponding wear of the rollers 12, 13. This shows Fig. 5 in that a distance a 2 is set between a roller surface 56 and the spray nozzle plane 53 which is identical to the distance a 1 in order to substantially maintain the size of spray cones 57 of the spray nozzles 24 and thus a correspondingly substantially uniform wetting surface on the reduced roller surface 56 train. If the size of the spray cone 57 is to be more precisely adapted to the smaller roll diameter d 2 , the distance a 2 can even be reduced slightly compared to the distance a 1 , so that the wetting area is correspondingly reduced.

Zusätzlich ist zwischen der Sprühachse 48 der Sprühdüsen 24 der mittleren Düsenreihe 22 und der Horizontalen nunmehr ein Sprühachsenwinkel α2 ausgebildet, der gegenüber dem Sprühachsenwinkel α1 vergrößert ist, so dass die Sprühachse 48 nach wie vor auf die Walzenachse 55 der nun im Durchmesser reduzierten Walzen 12, 13 ausgerichtet ist beziehungsweise die Walzenachsen 55 schneidet.In addition, a spray axis angle α 2 is now formed between the spray axis 48 of the spray nozzles 24 of the middle nozzle row 22 and the horizontal, which is increased relative to the spray axis angle α 1 , so that the spray axis 48 still on the roll axis 55 of the now reduced in diameter rolls 12, 13 is aligned or the roller axes 55 intersects.

Wie ein Vergleich der Fig. 2 und 4 zeigt, der die unterschiedlichen Stellungen der Stellgetriebe 50, 51 verdeutlicht, wird dies dadurch erreicht, dass ein Verschwenken des mit dem Antriebeshebel 32 verbundenen Exzenterzapfens 28 ( Fig. 6 ) um die Lagerachse 46 erfolgt, wodurch die Düsenbalken 19, 20 auf die Walzenachsen 55 zu bewegt werden. Gleichzeitig sorgt eine Führung der Kulissensteine 44, die an den Lagerenden 31 der Düsenbalken 19, 20 angeordnet sind und in die zum Walzspalt 15 geneigten Kulissennuten 42 eingreifen, dafür, dass die Düsenbalken 19, 20 eine Drehung um ihre Längsachse ausführen, so dass die im Vergleich zwischen den Fig. 3 und 5 erkennbare Vergrößerung des Sprühachsenwinkels vom Sprühachsenwinkel α1 zum Sprühachsenwinkel α2 erfolgt.Like a comparison of Fig. 2 and 4 shows, which illustrates the different positions of the actuating gear 50, 51, this is achieved in that a pivoting of the associated with the drive lever 32 eccentric pin 28 (FIG. Fig. 6 ) takes place about the bearing axis 46, whereby the nozzle bars 19, 20 are moved to the roller axes 55 to. At the same time, a guide of the sliding blocks 44, which are arranged at the bearing ends 31 of the nozzle bars 19, 20 and engage in the rolling gap 15 inclined cam grooves 42, ensures that the nozzle bars 19, 20 perform a rotation about its longitudinal axis, so that in the Comparison between the FIGS. 3 and 5 recognizable enlargement of the Sprühachsenwinkels from Sprühachsenwinkel α 1 to Sprühachsenwinkel α 2 takes place.

Wie die Fig.2, 4 und 6 zeigen, sind die Düsenbalken 19, 20 mit einer Reihenanordnung zusätzlicher Heißdüsen 58 versehen, die eine Beeinflussung der Planheit von gewalztem Bandmaterial insbesondere in Bankantenbereichen ermöglichen. Obwohl die Heißdüsen 58 das Bauvolumen der Düsenbalken 19, 20 noch zusätzlich vergrößern und die Platzverhältnisse zur Unterbringung der Stellgetriebe 50, 51 im Bereich der Einlaufarmatur 16 noch weiter einschränken, können, wie im Ausführungsbeispiel dargestellt, die Stellgetriebe 50, 51 ohne Funktionseinschränkung untergebracht werden.As the Fig.2, 4 and 6 show, the nozzle bars 19, 20 are provided with a series arrangement of additional hot nozzles 58, which allow influencing the flatness of rolled strip material, especially in bank areas. Although the hot nozzles 58 further increase the overall volume of the nozzle bars 19, 20 and further restrict the space available for accommodating the actuating gears 50, 51 in the region of the inlet fitting 16, the actuating gears 50, 51 can be accommodated without function restriction, as shown in the exemplary embodiment.

Zur Betätigung der Antriebseinrichtung 40 kann ein Wegmesssytem eingesetzt werden, das in Abhängigkeit von dem aktuellen Walzendurchmesser der Walzen 12, 13 die Düsenbalken 19, 20 zur Verringerung des Achsabstandes zwischen den Düsenbalken 19, 20 und den Walzen 12, 13 nachführt, so dass quasi eine in situ-Relativpositionierung der Düsenbalken 19, 20 möglich wird, die selbst während des laufenden Betriebs eines Walzwerks eine Änderung des Abstands zwischen den Düsenbalken 19, 20 und der Walzenoberfläche 52 ermöglicht.For actuation of the drive device 40, a Wegmesssytem can be used, the nozzle bars 19, 20 depending on the current roll diameter of the rollers 12, 13 for reducing the axial distance between the nozzle bars 19, 20 and the rollers 12, 13, so that virtually a In situ relative positioning of the nozzle bars 19, 20 is possible, which allows even during the ongoing operation of a rolling mill, a change in the distance between the nozzle bars 19, 20 and the roller surface 52.

Claims (13)

  1. A method for cooling and/or lubricating at least one roll (12, 13) disposed in a wall stand (10), in which at least one nozzle bar (19, 20), which is associated with the roll and of which at least one row arrangement of spray nozzles (24) for applying a fluid to a roll surface (52, 56) of the roll is disposed parallel to a roll axis (55), is changed in terms of its axial distance to the roll by means of at least one control linkage (50, 51), which is disposed on the roll stand, in such a manner that the distance between the spray nozzles and the roll surface stays constant as a roll diameter decreases because of wear of the roll,
    characterized in that
    the control linkage (50, 51) causes a movement of the nozzle bar (19, 20) which combines a straight translational movement of a longitudinal axis (45) of the nozzle bar (19, 20) in the direction of the roll (12, 13) and a pivoting movement of the nozzle bar (19, 20) in the opposite direction about a bearing axis (46) of the nozzle bar on a side plate (27) of the roll stand (10).
  2. The method according to claim 1,
    characterized in that
    the translational movement is superimposed on the pivoting movement of the nozzle bar (19, 20) in such a manner that the pivoting movement of the nozzle bar (19, 20) is eccentric to the bearing axis (46) of the nozzle bar on the side plate (27) of the roll stand (10), the longitudinal axis (45) of the nozzle bar moving toward the roll axis (55) during the pivoting movement, and the nozzle bar turning about its longitudinal axis (45) in the opposite direction during the eccentric pivoting movement so as to change a spray axis angle α1, α2 formed between a spray axis (48) and the horizontal H.
  3. The method according to claim 1 or 2,
    characterized in that
    two control linkages (50, 51) are coupled by means of a coupling linkage (35) so as to effect a synchronous movement of two parallel nozzle bars (19, 20), each control linkage (50, 51) being associated with one of two rolls (12, 13) of a work roll arrangement that define a nip (15) in such a manner that the movement of the nozzle bars (19, 20) is symmetrical to a rolling line (43).
  4. The method according to claim 3,
    characterized in that
    the nozzle bars (19, 20) are moved by means of a shared drive device (40) acting on the coupling linkage (35).
  5. The method according to claim 4,
    characterized in that
    the drive is effected by means of the driving device (40) acting within the rolling line (43).
  6. A device for cooling and/or lubricating at least one roll (12, 13) disposed in a roll stand (10), comprising at least one nozzle bar (19, 20) which is associated with the roll (12, 13) and which serves to apply a fluid to the roll surface (52, 56), the nozzle bar (19, 20) having at least one row arrangement of spray nozzles (24) parallel to the roll axis (55), the device having at least one control linkage (50, 51) for changing the axial distance a1, a2 between the nozzle bar (19, 20) and the roll (12, 13) as a function of the roll diameter d1, d2,
    characterized in that
    the control linkage (50, 51) is configured in such a manner that a straight translational movement of a longitudinal axis (45) of the nozzle bar (19, 20) in the direction of the roll (12, 13) is superimposed on a pivoting motion of the nozzle bar (19, 20) about a bearing axis (46) on a side plate (27) of the roll stand directed away from the roll (12, 13).
  7. The device according to claim 6,
    characterized in that
    for performing the pivoting movement, the nozzle bar (19, 20) is rotatably mounted on an eccentric device rotatably disposed on the side plate (27) of the roll stand (10) and drivable by means of a rotary drive, and for performing the translational movement, the nozzle bar (19, 20) is connected to the roller stand (10) in a mobile manner via a sliding block guide tilted relative to the nip (15).
  8. The device according to claim 7,
    characterized in that
    the eccentric device is configured as an eccentric pin (28), an outer pin portion (29) of which is rotatably disposed on the side plate (27) of the roll stand (10) and an inner pin portion (30) of which is rotatably disposed on the nozzle bar (19, 20).
  9. The device according to claim 7 or 8,
    characterized in that
    the sliding block guide has a groove (42) disposed on the side plate (27) of the roll stand (10) and a sliding block (44) disposed on the nozzle bar (19, 20).
  10. The device according to any one of claims 7 to 9,
    characterized in that
    the eccentric device is provided with a translational drive device (40) in an articulated manner via a drive lever (32) so as to realize the rotary drive.
  11. The device according to claim 10,
    characterized in that
    the drive device (40) is articulated to the drive lever (32) via a lever member (34).
  12. The device according to any one of claims 6 to 11,
    characterized in that
    the device has a second control linkage (51), both control linkages (50, 51) each cooperating with one of two parallel nozzle bars (19, 20), each nozzle bar (19, 20) being associated with one of two rolls (12, 13) of a work roll arrangement that define a nip (15), and the control linkages (50, 51) being driven by a shared drive device (40) via a coupling linkage (35) in such a manner that the movement of the nozzle bars (19, 20) is symmetrical to a rolling line (43).
  13. The device according to claim 12,
    characterized in that
    a translational drive device acting on the coupling linkage (35) in the rolling line (43) is provided so as to realize the shared drive device (40) of the nozzle bars (19, 20).
EP16187319.5A 2015-10-01 2016-09-06 Method and device for cooling a roller which is arranged in a rolling stand Active EP3150291B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015219053.6A DE102015219053A1 (en) 2015-10-01 2015-10-01 Method and device for cooling a roll arranged in a roll stand

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EP3150291A1 EP3150291A1 (en) 2017-04-05
EP3150291B1 true EP3150291B1 (en) 2018-08-01

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DE (1) DE102015219053A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112317542B (en) * 2020-10-28 2022-05-31 洛阳万基铝加工有限公司 Atomizing and oil spraying device for roller
CN115488168B (en) * 2022-09-26 2023-06-20 马鞍山延隆新材料科技有限公司 Lubricating and cooling device for producing high-rolling-capacity high-ductility cold-rolled ribbed steel bars

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4912955A (en) * 1988-12-05 1990-04-03 Norandal Usa Inc. Spray system for rolling mill
JP2710392B2 (en) * 1989-03-14 1998-02-10 新日本製鐵株式会社 Roller roll water jacket cooling system
JP4206542B2 (en) * 1999-02-01 2009-01-14 株式会社Ｉｈｉ Roll cooling device and rolling equipment equipped with the same
DE102009040876A1 (en) * 2008-11-18 2010-05-20 Sms Siemag Ag Device for cooling a roll in a roll stand
DE102009053074A1 (en) * 2009-03-03 2010-09-09 Sms Siemag Ag Method and cooling device for cooling the rolls of a roll stand

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DE102015219053A1 (en) 2017-04-06

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