EP1059127A2 - Descaling method for a metal strip and corresponding descaling arrangement - Google Patents

Descaling method for a metal strip and corresponding descaling arrangement Download PDF

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Publication number
EP1059127A2
EP1059127A2 EP00112219A EP00112219A EP1059127A2 EP 1059127 A2 EP1059127 A2 EP 1059127A2 EP 00112219 A EP00112219 A EP 00112219A EP 00112219 A EP00112219 A EP 00112219A EP 1059127 A2 EP1059127 A2 EP 1059127A2
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EP
European Patent Office
Prior art keywords
descaling
metal strip
adjusting element
liquid
working distance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00112219A
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German (de)
French (fr)
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EP1059127B1 (en
EP1059127A3 (en
Inventor
Matthias Kipping
Peter Sudau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
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Publication of EP1059127A2 publication Critical patent/EP1059127A2/en
Publication of EP1059127A3 publication Critical patent/EP1059127A3/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—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 de-scaling, e.g. by brushing
    • B21B45/08—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 de-scaling, e.g. by brushing hydraulically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/08—Braking or tensioning arrangements

Definitions

  • a metal strip in particular a steel strip, forms after the rolling on the metal strip Scale layer.
  • This scale layer must be removed in order to be able to produce a high quality metal band.
  • a descaling device a descaling liquid from a working distance to the metal strip, usually water, under high pressure sprayed onto the metal band.
  • Metal strips are usually used in multi-stand rolling mills rolled.
  • the metal strip is placed between the individual roll stands thereby being subjected to a train that is as constant as possible to be held.
  • a loop lifter between two roll stands (Looper) arranged.
  • the looper When placing the looper on the metal belt the metal band is deflected transversely to the transport direction. So that the metal band is not at the deflection Descaling device triggers, is the descaling device therefore in the prior art in a relatively large Working distance to the metal band arranged, the beyond is changed when the metal strip is deflected. This gives there is less and uneven impact on the Metal strap.
  • a descaling process is known from DE 195 35 789 C2, at which the actual distance of the descaling device gripped by the metal strip and the location of the descaling device is regulated such that the actual distance is essentially is kept constant.
  • the object of the present invention is a Descaling process and a corresponding one Descaling arrangement to create in a simple way a tracking of the descaling device on deflections of the metal strip is possible, so that a better impact is achievable.
  • the task for the descaling process is solved by that the descaling device according to the Forced deflection is tracked so that the working distance is kept substantially constant.
  • the descaling liquid is from an upper one Descaling unit from an upper working distance and from a lower descaling unit from a lower working distance sprayed onto the metal band. Both descaling units are simultaneously according to the forced deflection updated.
  • the descaling liquid is used by the descaling device at an angle of spray relative to the metal strip the metal tape is injected.
  • the efficiency of descaling is depending on the spray angle, among other things.
  • the descaling device becomes like this tracked that the spray angle is essentially constant is held.
  • Figure 1 shows a section of a multi-stand hot rolling mill for a metal band 1, here steel band.
  • the steel strip 1 1 in a transport direction x of one front roll stand 2 via an adjusting element 3 to a rear Roll stand 4 performed.
  • a descaling device 5 Between the front roll stand 2 and the adjusting element 3 is a descaling device 5 arranged.
  • the descaling device 5 has an upper one Descaling unit 6 and a lower descaling unit 7 on. Descaling units 6, 7 become an upper one or lower working distance a, b a descaling liquid 8, here water, at a spray angle X, Y on that Steel strip 1 sprayed.
  • the spray angle X or Y is included measured relative to steel strip 1.
  • the adjusting element 3 is adjustable by a swivel angle ⁇ and thereby adjustable to the steel belt 1. So it works as a looper.
  • the adjustment element 3 is adjusted in particular in order to to maintain a train in the metal strip 1 and / or by one Store part of the length of the metal strip 1. Both can e.g. B. due to mass flow disturbances between the rolling stands 2, 4 may be required.
  • the adjusting element 3 is connected to the Descaling device 5 coupled by control technology.
  • the control device 9 target working distances a *, b * can be specified, so that the control device 9 descaling units 6, 7th and thus the descaling device 5 accordingly the forced deflection caused by the adjusting element 3 in this way can track that the working distances a *, b * essentially be respected.
  • the actual working distances a, b will be in spite of those caused by the setting of the adjusting element 3 Forced deflection kept essentially constant.
  • Descaling units are therefore preferred 6, 7 coupled to one another in terms of control technology, that both tracked simultaneously according to the deflection become.
  • the spray angle X, Y under which the descaling liquid 8 is sprayed onto the steel strip 1, has an influence on the Effectiveness of descaling. For constant descaling to ensure, therefore, the descaling units 6, 7 tracked according to the forced deflection, that the spray angles X, Y are kept substantially constant become.
  • the descaling units 6, 7 adjusted purely translationally. Tracking the Spray angle X, Y can be achieved by a suitable mechanical coupling (e.g. a linkage or a gearbox) or by a causes further descaling units 6, 7 become. It is also possible to use the descaling units 6, 7 in articulation points so that when adjusting a Carry out rotary motion. With a suitable choice of the articulation points in this case, the spray angles X, Y automatically Getting corrected.
  • a suitable mechanical coupling e.g. a linkage or a gearbox
  • the descaling units are updated 6, 7 via hydraulic cylinder devices 11.
  • Hydraulic cylinder devices 11 could also be others Adjustment devices, e.g. B. electric or hydraulic motors used become. Also a direct mechanical coupling of the adjusting element 3 with the descaling units 6, 7 is possible.
  • the descaling units 6, 7 are the descaling units 6, 7 according to the Figures 1 and 2 assigned to liquid scavenger 6 ', 7'.
  • the the lower descaling unit 7 associated lower liquid scavenger 7 ' is rigid with the lower descaling unit 7 connected. That of the upper descaling unit 6 assigned upper liquid catcher 7 ', however, is in one Hinge point 10 stored. It is used together with the upper descaling unit 6 corresponding to that by the adjusting element 3 caused forced deflection.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Metal Rolling (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Basic Packing Technique (AREA)

Abstract

Descaling process for a metal strip comprises feeding the strip (1) in a transporting direction (x) from the front to the back of a rolling stand (2, 4); and spraying a descaling liquid (8) onto the metal strip from a descaling device (5) between the roll stands at a distance (a, b). The metal strip is moved around a forced direction from an adjusting element (3) across the transporting direction. The descaling device is tracked corresponding to the forced direction so that the working distance (a, b) is kept constant.

Description

Die vorliegende Erfindung betrifft ein Entzunderungsverfahren für ein Metallband,

  • wobei das Metallband in einer Transportrichtung von einem vorderen zu einem hinteren Walzgerüst geführt wird,
  • wobei zwischen den Walzgerüsten von einer Entzunderungseinrichtung aus einem Arbeitsabstand zum Metallband eine Entzunderungsflüssigkeit auf das Metallband gespritzt wird,
  • wobei das Metallband in Höhe der Entzunderungseinrichtung von einem Anstellelement um eine Zwangsauslenkung quer zur Transportrichtung ausgelenkt wird,
sowie eine hiermit korrespondierende Endzunderungsanordnung.The present invention relates to a descaling process for a metal strip,
  • the metal strip being guided in a transport direction from a front to a rear roll stand,
  • wherein a descaling liquid is sprayed onto the metal strip between the roll stands by a descaling device from a working distance from the metal strip,
  • the metal strip at the level of the descaling device being deflected by a positioning element transversely to the direction of transport,
and a corresponding final scale arrangement.

Beim Warmwalzen eines Metallbandes, insbesondere eines Stahlbandes, bildet sich nach dem Walzen auf dem Metallband eine Zunderschicht. Diese Zunderschicht muß entfernt werden, um ein qualitativ hochwertiges Metallband erzeugen zu können. Im Stand der Technik wird daher mittels einer Entzunderungseinrichtung aus einem Arbeitsabstand zum Metallband eine Entzunderungsflüssigkeit, in der Regel Wasser, unter hohem Druck auf das Metallband gespritzt.When hot rolling a metal strip, in particular a steel strip, forms after the rolling on the metal strip Scale layer. This scale layer must be removed in order to be able to produce a high quality metal band. in the State of the art is therefore using a descaling device a descaling liquid from a working distance to the metal strip, usually water, under high pressure sprayed onto the metal band.

Metallbänder werden üblicherweise in mehrgerüstigen Walzstraßen gewalzt. Zwischen den einzelnen Walzgerüsten wird das Metallband dabei mit einem Zug beaufschlagt, der möglichst konstant gehalten werden soll. Zum Konstanthalten dieses Zuges ist oftmals zwischen zwei Walzgerüsten ein Schlingenheber (Looper) angeordnet. Beim Anstellen des Loopers an das Metallband wird das Metallband quer zur Transportrichtung ausgelenkt. Damit das Metallband beim Auslenken nicht an der Entzunderungseinrichtung anstößt, ist die Entzunderungseinrichtung daher im Stand der Technik in einem relativ großen Arbeitsabstand zum Metallband angeordnet, der darüber hinaus beim Auslenken des Metallbandes verändert wird. Dadurch ergibt sich ein geringerer und ungleichmäßiger Impact auf dem Metallband.Metal strips are usually used in multi-stand rolling mills rolled. The metal strip is placed between the individual roll stands thereby being subjected to a train that is as constant as possible to be held. To keep this train constant is often a loop lifter between two roll stands (Looper) arranged. When placing the looper on the metal belt the metal band is deflected transversely to the transport direction. So that the metal band is not at the deflection Descaling device triggers, is the descaling device therefore in the prior art in a relatively large Working distance to the metal band arranged, the beyond is changed when the metal strip is deflected. This gives there is less and uneven impact on the Metal strap.

Aus der DE 195 35 789 C2 ist ein Entzunderungsverfahren bekannt, bei dem der Istabstand der Entzunderungseinrichtung vom Metallband erfaßt und die Lage der Entzunderungseinrichtung derart geregelt wird, daß der Istabstand im wesentlichen konstant gehalten wird.A descaling process is known from DE 195 35 789 C2, at which the actual distance of the descaling device gripped by the metal strip and the location of the descaling device is regulated such that the actual distance is essentially is kept constant.

In der älteren, nicht vorveröffentlichten deutschen Patentanmeldung 198 17 002.5 ist ein Entzunderungsverfahren für ein Metallband beschrieben, beim dem das Bandprofil erfaßt und die Entzunderungseinrichtung entsprechend dem erfaßten Profilverlauf nachführbar ist.In the older, unpublished German patent application 198 17 002.5 is a descaling process for a Metal strip described in which the strip profile is recorded and the descaling device according to the profile profile detected is trackable.

Die Aufgabe der vorliegenden Erfindung besteht darin, ein Entzunderungsverfahren und eine hiermit korrespondierende Entzunderungsanordnung zu schaffen, bei der auf einfache Weise ein Nachführen der Entzunderungseinrichtung auf Auslenkungen des Metallbandes möglich ist, so daß ein besserer Impact erzielbar ist.The object of the present invention is a Descaling process and a corresponding one Descaling arrangement to create in a simple way a tracking of the descaling device on deflections of the metal strip is possible, so that a better impact is achievable.

Die Aufgabe wird für das Entzunderungsverfahren dadurch gelöst, daß die Entzunderungseinrichtung entsprechend der Zwangsauslenkung nachgeführt wird, so daß der Arbeitsabstand im wesentlichen konstant gehalten wird.The task for the descaling process is solved by that the descaling device according to the Forced deflection is tracked so that the working distance is kept substantially constant.

Hiermit korrespondierend ist bei der Entzunderungsanordnung die Entzunderungseinrichtung mit dem Anstellelement regeltechnisch gekoppelt, so daß die Entzunderungseinrichtung entsprechend der Zwangsauslenkung nachführbar ist. This corresponds to the descaling arrangement the descaling device with the adjusting element in terms of control technology coupled so that the descaling device accordingly the forced deflection can be tracked.

Vorzugsweise wird die Entzunderungsflüssigkeit von einer oberen Entzunderungseinheit aus einem oberen Arbeitsabstand und von einer unteren Entzunderungseinheit aus einem unteren Arbeitsabstand auf das Metallband gespritzt. Beide Entzunderungseinheiten werden dabei simultan entsprechend der Zwangsauslenkung nachgeführt.Preferably, the descaling liquid is from an upper one Descaling unit from an upper working distance and from a lower descaling unit from a lower working distance sprayed onto the metal band. Both descaling units are simultaneously according to the forced deflection updated.

Die Entzunderungsflüssigkeit wird von der Entzunderungseinrichtung unter einem Spritzwinkel relativ zum Metallband auf das Metallband gespritzt. Die Effizienz der Entzunderung ist dabei unter anderem auch von dem Spritzwinkel abhängig. Vorzugsweise wird daher die Entzunderungseinrichtung derart nachgeführt, daß der Spritzwinkel im wesentlichen konstant gehalten wird.The descaling liquid is used by the descaling device at an angle of spray relative to the metal strip the metal tape is injected. The efficiency of descaling is depending on the spray angle, among other things. Preferably therefore the descaling device becomes like this tracked that the spray angle is essentially constant is held.

Weitere Vorteile und Einzelheiten ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels. Dabei zeigen in Prinzipdarstellung:

Figur 1
eine Entzunderungsanordnung und
Figur 2
ein Detail von Figur 1.
Further advantages and details emerge from the following description of an exemplary embodiment. In principle, the following show:
Figure 1
a descaling arrangement and
Figure 2
a detail of Figure 1.

Figur 1 zeigt einen Ausschnitt einer mehrgerüstigen Warmwalzstraße für ein Metallband 1, hier Stahlband. Das Stahlband 1 wird gemäß Figur 1 in einer Transportrichtung x von einem vorderen Walzgerüst 2 über ein Anstellelement 3 zu einem hinteren Walzgerüst 4 geführt. Zwischen dem vorderen Walzgerüst 2 und dem Anstellelement 3 ist eine Entzunderungseinrichtung 5 angeordnet. Die Entzunderungseinrichtung 5 weist eine obere Entzunderungseinheit 6 und eine untere Entzunderungseinheit 7 auf. Von den Entzunderungseinheiten 6, 7 wird aus einem oberen bzw. unteren Arbeitsabstand a, b eine Entzunderungsflüssigkeit 8, hier Wasser, unter einem Spritzwinkel X, Y auf das Stahlband 1 gespritzt. Der Spritzwinkel X bzw. Y ist dabei relativ zum Stahlband 1 gemessen. Figure 1 shows a section of a multi-stand hot rolling mill for a metal band 1, here steel band. The steel strip 1 1 in a transport direction x of one front roll stand 2 via an adjusting element 3 to a rear Roll stand 4 performed. Between the front roll stand 2 and the adjusting element 3 is a descaling device 5 arranged. The descaling device 5 has an upper one Descaling unit 6 and a lower descaling unit 7 on. Descaling units 6, 7 become an upper one or lower working distance a, b a descaling liquid 8, here water, at a spray angle X, Y on that Steel strip 1 sprayed. The spray angle X or Y is included measured relative to steel strip 1.

Das Anstellelement 3 ist um einen Schwenkwinkel α verstellbar und dadurch an das Stahlband 1 anstellbar. Es arbeitet also als Looper. Durch das Verstellen des Anstellelements 3 wird das Stahlband 1 in Höhe der Entzunderungseinrichtung 5 um eine Zwangsauslenkung quer zur Transportrichtung x ausgelenkt. Ein Verstellen des Anstellelements 3 erfolgt insbesondere, um im Metallband 1 einen Zug aufrechtzuerhalten und/oder um eine Teillänge des Metallbandes 1 zwischenzuspeichern. Beides kann z. B. aufgrund von Massenflußstörungen zwischen den Walzgerüsten 2, 4 erforderlich sein.The adjusting element 3 is adjustable by a swivel angle α and thereby adjustable to the steel belt 1. So it works as a looper. By adjusting the adjusting element 3 the steel strip 1 at the level of the descaling device 5 Forced deflection transverse to the transport direction x deflected. The adjustment element 3 is adjusted in particular in order to to maintain a train in the metal strip 1 and / or by one Store part of the length of the metal strip 1. Both can e.g. B. due to mass flow disturbances between the rolling stands 2, 4 may be required.

Das Anstellelement 3 ist über eine Regeleinrichtung 9 mit der Entzunderungseinrichtung 5 regeltechnisch gekoppelt. Der Regeleinrichtung 9 sind Soll-Arbeitsabstände a*, b* vorgebbar, so daß die Regeleinrichtung 9 die Entzunderungseinheiten 6, 7 und damit auch die Entzunderungseinrichtung 5 entsprechend der vom Anstellelement 3 bewirkten Zwangsauslenkung derart nachführen kann, daß die Arbeitsabstände a*, b* im wesentlichen eingehalten werden. Die Ist-Arbeitsabstände a, b werden also trotz der durch das Anstellen des Anstellelements 3 bewirkten Zwangsauslenkung im wesentlichen konstant gehalten.The adjusting element 3 is connected to the Descaling device 5 coupled by control technology. The control device 9 target working distances a *, b * can be specified, so that the control device 9 descaling units 6, 7th and thus the descaling device 5 accordingly the forced deflection caused by the adjusting element 3 in this way can track that the working distances a *, b * essentially be respected. The actual working distances a, b will be in spite of those caused by the setting of the adjusting element 3 Forced deflection kept essentially constant.

Die Änderung der Ist-Arbeitsabstände a, b erfolgt stets in die gleiche Richtung. Vorzugsweise sind daher die Entzunderungseinheiten 6, 7 regeltechnisch derart miteinander gekoppelt, daß beide entsprechend der Auslenkung simultan nachgeführt werden.The actual working distances a, b are always changed in the same direction. Descaling units are therefore preferred 6, 7 coupled to one another in terms of control technology, that both tracked simultaneously according to the deflection become.

Der Spritzwinkel X, Y, unter dem die Entzunderungsflüssigkeit 8 auf das Stahlband 1 gespritzt wird, hat Einfluß auf die Wirksamkeit der Entzunderung. Um eine gleichbleibende Entzunderung zu gewährleisten, werden daher die Entzunderungseinheiten 6, 7 entsprechend der Zwangsauslenkung derart nachgeführt, daß die Spritzwinkel X, Y im wesentlichen konstant gehalten werden. The spray angle X, Y, under which the descaling liquid 8 is sprayed onto the steel strip 1, has an influence on the Effectiveness of descaling. For constant descaling to ensure, therefore, the descaling units 6, 7 tracked according to the forced deflection, that the spray angles X, Y are kept substantially constant become.

Gemäß den Figuren 1 und 2 werden die Entzunderungseinheiten 6, 7 rein translatorisch verstellt. Das Nachführen der Spritzwinkel X, Y kann durch eine geeignete mechanische Kopplung (z. B. ein Gestänge oder ein Getriebe) oder durch eine weitere Anstellung der Entzunderungseinheiten 6, 7 bewirkt werden. Es ist auch möglich, die Entzunderungseinheiten 6, 7 in Gelenkpunkten anzulenken, so daß sie beim Verstellen eine rotatorische Bewegung ausführen. Bei geeigneter Wahl der Gelenkpunkte können in diesem Fall die Spritzwinkel X, Y automatisch korrigiert werden.According to Figures 1 and 2, the descaling units 6, 7 adjusted purely translationally. Tracking the Spray angle X, Y can be achieved by a suitable mechanical coupling (e.g. a linkage or a gearbox) or by a causes further descaling units 6, 7 become. It is also possible to use the descaling units 6, 7 in articulation points so that when adjusting a Carry out rotary motion. With a suitable choice of the articulation points in this case, the spray angles X, Y automatically Getting corrected.

Durch das Nachführen der Ist-Arbeitsabstände a, b, ggf. auch der Spritzwinkel X, Y, ist gewährleistet, daß die Überdeckung der Entzunderungsflüssigkeit 8 auf dem Metallband 1 stets die gleiche ist. Bei optimal angeordneten Düsen können somit durch ungleichmäßige Entzunderung verursachte Streifen auf dem Metallband 1 vermieden und die Entzunderungsleistung aufgrund des höheren Impacts optimiert werden.By tracking the actual working distances a, b, possibly also the spray angle X, Y, ensures that the coverage the descaling liquid 8 on the metal strip 1 always the same thing. With optimally arranged nozzles, you can streaks caused by uneven descaling the metal strip 1 avoided and the descaling performance due of the higher impact can be optimized.

Gemäß Figur 2 erfolgt das Nachführen der Entzunderungseinheiten 6, 7 über Hydraulikzylindereinrichtungen 11. Anstelle der Hydraulikzylindereinrichtungen 11 könnten aber auch andere Verstelleinrichtungen, z. B. Elektro- oder Hydromotoren, verwendet werden. Auch eine direkte mechanische Kopplung des Anstellelements 3 mit den Entzunderungseinheiten 6, 7 ist möglich.According to FIG. 2, the descaling units are updated 6, 7 via hydraulic cylinder devices 11. Instead of Hydraulic cylinder devices 11 could also be others Adjustment devices, e.g. B. electric or hydraulic motors used become. Also a direct mechanical coupling of the adjusting element 3 with the descaling units 6, 7 is possible.

Zur Vermeidung einer unkontrollierten Kühlung des vorderen Walzgerüsts 2 sind den Entzunderungseinheiten 6, 7 gemäß den Figuren 1 und 2 Flüssigkeitsfänger 6', 7' zugeordnet. Der der unteren Entzunderungseinheit 7 zugeordnete untere Flüssigkeitsfänger 7' ist dabei starr mit der unteren Entzunderungseinheit 7 verbunden. Der der oberen Entzunderungseinheit 6 zugeordnete obere Flüssigkeitsfänger 7' hingegen ist in einem Gelenkpunkt 10 gelagert. Er wird zusammen mit der oberen Entzunderungseinheit 6 entsprechend der durch das Anstellelement 3 bewirkten Zwangsauslenkung nachgeführt. To avoid uncontrolled cooling of the front Roll stands 2 are the descaling units 6, 7 according to the Figures 1 and 2 assigned to liquid scavenger 6 ', 7'. The the lower descaling unit 7 associated lower liquid scavenger 7 'is rigid with the lower descaling unit 7 connected. That of the upper descaling unit 6 assigned upper liquid catcher 7 ', however, is in one Hinge point 10 stored. It is used together with the upper descaling unit 6 corresponding to that by the adjusting element 3 caused forced deflection.

Durch die erfindungsgemäße Nachführung der Entzunderungseinrichtung 5 bei Auslenkung des Stahlbandes 1 werden die Entzunderungseinheiten 6, 7 während des gesamten Entzunderns auf möglichst kurzen und konstanten Ist-Arbeitsabständen a, b zum Stahlband 1 gehalten. Es ergibt sich somit ein nahezu optimaler und insbesondere auch nahezu konstanter sogenannter Impact. Durch die Nachführung der Spritzwinkel X, Y wird der Entzunderungsvorgang noch weiter optimiert. Through the tracking of the descaling device according to the invention 5 when the steel strip 1 is deflected, the descaling units 6, 7 during the entire descaling Actual working distances a, b as short and constant as possible Steel band 1 held. The result is an almost optimal one and in particular also almost constant so-called impact. By tracking the spray angle X, Y the Descaling process further optimized.

BezugszeichenlisteReference list

11
Stahlband/MetallbandSteel strap / metal strap
2, 42, 4
WalzgerüsteMill stands
33rd
AnstellelementAdjusting element
55
EntzunderungseinrichtungDescaling device
6, 76, 7
EntzunderungseinheitenDescaling units
6', 7'6 ', 7'
FlüssigkeitsfängerLiquid scavenger
88th
EntzunderungsflüssigkeitDescaling fluid
99
RegeleinrichtungControl device
1010th
GelenkpunktHinge point
1111
HydraulikzylindereinrichtungenHydraulic cylinder devices
a, a*, b, b*a, a *, b, b *
ArbeitsabständeWorking distances
xx
TransportrichtungDirection of transport
X, YX, Y
SpritzwinkelSpray angle
αα
SchwenkwinkelSwivel angle

Claims (12)

Entzunderungsverfahren für ein Metallband (1), wobei das Metallband (1) in einer Transportrichtung (x) von einem vorderen zu einem hinteren Walzgerüst (2, 4) geführt wird, wobei zwischen den Walzgerüsten (2, 4) von einer Entzunderungseinrichtung (5) aus einem Arbeitsabstand (a, b) zum Metallband (1) eine Entzunderungsflüssigkeit (8) auf das Metallband (1) gespritzt wird, wobei das Metallband (1) in Höhe der Entzunderungseinrichtung (5) von einem Anstellelement (3) um eine Zwangsauslenkung quer zur Transportrichtung (x) ausgelenkt wird, wobei die Entzunderungseinrichtung (5) entsprechend der Zwangsauslenkung nachgeführt wird, so daß der Arbeitsabstand (a, b) im wesentlichen konstant gehalten wird. Descaling process for a metal strip (1), wherein the metal strip (1) is guided in a transport direction (x) from a front to a rear roll stand (2, 4), wherein a descaling liquid (8) is sprayed onto the metal strip (1) between the roll stands (2, 4) from a descaling device (5) from a working distance (a, b) to the metal strip (1), the metal strip (1) at the level of the descaling device (5) being deflected by a positioning element (3) by a forced deflection transverse to the transport direction (x), the descaling device (5) being tracked in accordance with the forced deflection, so that the working distance (a, b) is kept essentially constant. Entzunderungsverfahren nach Anspruch 1,
dadurch gekennzeichnet, daß das Anstellelement (3) zwischen den Walzgerüsten (2, 4) an das Metallband (1) angestellt wird. Descaling process according to claim 1,
characterized, that the adjusting element (3) is placed between the roll stands (2, 4) on the metal strip (1). Entzunderungsverfahren nach Anspruch 2,
dadurch gekennzeichnet, daß das Anstellelement (3) zum Auslenken des Metallbandes (1) um einen Schwenkwinkel (α) verstellt wird. Descaling process according to claim 2,
characterized, that the adjusting element (3) for deflecting the metal strip (1) is adjusted by a swivel angle (α). Entzunderungsverfahren nach einem der obigen Ansprüche,
dadurch gekennzeichnet, daß die Entzunderungsflüssigkeit (8) von einer oberen Entzunderungseinheit (6) aus einem oberen Arbeitsabstand (a) und von einer unteren Entzunderungseinheit (7) aus einem unteren Arbeitsabstand (b) auf das Metallband (1) gespritzt wird und daß beide Entzunderungseinheiten (6, 7) simultan entsprechend der Zwangsauslenkung nachgeführt werden. Descaling process according to one of the above claims,
characterized, that the descaling liquid (8) is sprayed onto the metal strip (1) by an upper descaling unit (6) from an upper working distance (a) and by a lower descaling unit (7) from a lower working distance (b) and that both descaling units (6, 7) are tracked simultaneously according to the forced deflection. Entzunderungsverfahren nach einem der obigen Ansprüche,
dadurch gekennzeichnet, daß die Entzunderungsflüssigkeit (8) von der Entzunderungseinrichtung (5) unter einem Spritzwinkel (X, Y) relativ zum Metallband (1) auf das Metallband (1) gespritzt wird und daß die Entzunderungseinrichtung (5) derart nachgeführt wird, daß der Spritzwinkel (X, Y) im wesentlichen konstant gehalten wird. Descaling process according to one of the above claims,
characterized, that the descaling liquid (8) is sprayed from the descaling device (5) at an angle of spray (X, Y) relative to the metal strip (1) onto the metal strip (1) and that the descaling device (5) is adjusted in such a way that the spray angle (X , Y) is kept substantially constant. Entzunderungsverfahren nach einem der obigen Ansprüche,
dadurch gekennzeichnet, daß die Entzunderungseinrichtung (5) mittels einer Hydraulikzylindereinrichtung (11) nachgeführt wird. Descaling process according to one of the above claims,
characterized, that the descaling device (5) is adjusted by means of a hydraulic cylinder device (11). Entzunderungsanordnung für ein Metallband (1), mit einem vorderen und einem hinteren Walzgerüst (2, 4), zwischen denen das Metallband (1) in einer Transportrichtung (x) führbar ist, mit einer zwischen den Walzgerüsten (2, 4) in einem Arbeitsabstand (a, b) zum Metallband (1) angeordneten Entzunderungseinrichtung (5), von der eine Entzunderungsflüssigkeit (8) auf das Metallband (1) spritzbar ist, mit einem Anstellelement (3), von dem das Metallband (1) in Höhe der Entzunderungseinrichtung (5) um eine Zwangsauslenkung quer zur Transportrichtung (x) auslenkbar ist, mit einer regeltechnischen Kopplung zwischen der Entzunderungseinrichtung (5) und dem Anstellelement (3), so daß die Entzunderungseinrichtung (5) entsprechend der Zwangsauslenkung nachführbar ist. Descaling arrangement for a metal strip (1), with a front and a rear roll stand (2, 4), between which the metal strip (1) can be guided in a transport direction (x), with a descaling device (5) arranged between the roll stands (2, 4) at a working distance (a, b) from the metal strip (1), from which a descaling liquid (8) can be sprayed onto the metal strip (1), with an adjusting element (3), from which the metal strip (1) can be deflected at the level of the descaling device (5) by a forced deflection transverse to the transport direction (x), with a control coupling between the descaling device (5) and the adjusting element (3), so that the descaling device (5) can be adjusted in accordance with the forced deflection. Entzunderungsanordnung nach Anspruch 7,
dadurch gekennzeichnet, daß das Anstellelement (3) zwischen den Walzgerüsten (2, 4) angeordnet ist. Descaling arrangement according to claim 7,
characterized, that the adjusting element (3) is arranged between the roll stands (2, 4). Entzunderungsanordnung nach Anspruch 8,
dadurch gekennzeichnet, daß das Anstellelement (3) als um einen Schwenkwinkel (α) verstellbarer Looper (3) ausgebildet ist. Descaling arrangement according to claim 8,
characterized, that the adjusting element (3) is designed as a looper (3) adjustable by a swivel angle (α). Entzunderungsanordnung nach Anspruch 7, 8 oder 9,
dadurch gekennzeichnet, daß die Entzunderungseinrichtung (5) eine obere und eine untere Entzunderungseinheit (6, 7) aufweist, von denen die Entzunderungsflüssigkeit (8) aus einem oberen und einem unteren Arbeitsabstand (a, b) auf das Metallband (1) spritzbar ist und daß die Entzunderungseinheiten (6, 7) regeltechnisch derart miteinander gekoppelt sind, daß beide simultan nachführbar sind. Descaling arrangement according to claim 7, 8 or 9,
characterized, that the descaling device (5) has an upper and a lower descaling unit (6, 7), of which the descaling liquid (8) can be sprayed onto the metal strip (1) from an upper and a lower working distance (a), and that the descaling units (6, 7) are coupled to one another in terms of control technology in such a way that both can be tracked simultaneously. Entzunderungsanordnung nach einem der Ansprüche 7 bis 10,
dadurch gekennzeichnet, daß die Entzunderungsflüssigkeit (8) von der Entzunderungseinrichtung (5) unter einem Spritzwinkel (X, Y) relativ zum Metallband (1) auf das Metallband (1) spritzbar ist und daß der Spritzwinkel (X, Y) entsprechend der Zwangsauslenkung nachführbar ist. Descaling arrangement according to one of Claims 7 to 10,
characterized, that the descaling liquid (8) can be sprayed from the descaling device (5) at an spray angle (X, Y) relative to the metal strip (1) onto the metal strip (1) and that the spray angle (X, Y) can be adjusted in accordance with the forced deflection. Entzunderungsanordnung nach einem der Ansprüche 7 bis 11,
dadurch gekennzeichnet, daß die Entzunderungseinrichtung (5) mittels einer Hydraulikzylindereinrichtung (11) nachführbar ist. Descaling arrangement according to one of Claims 7 to 11,
characterized, that the descaling device (5) can be adjusted by means of a hydraulic cylinder device (11).
EP00112219A 1999-06-07 2000-06-07 Descaling method for a metal strip and corresponding descaling arrangement Expired - Lifetime EP1059127B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19925809A DE19925809A1 (en) 1999-06-07 1999-06-07 Descaling process for a metal strip and descaling arrangement corresponding to it
DE19925809 1999-06-07

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EP1059127A2 true EP1059127A2 (en) 2000-12-13
EP1059127A3 EP1059127A3 (en) 2003-10-22
EP1059127B1 EP1059127B1 (en) 2010-03-24

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EP00112219A Expired - Lifetime EP1059127B1 (en) 1999-06-07 2000-06-07 Descaling method for a metal strip and corresponding descaling arrangement

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EP (1) EP1059127B1 (en)
JP (1) JP2001001029A (en)
KR (1) KR100632133B1 (en)
AT (1) ATE461761T1 (en)
BR (1) BR0002593A (en)
CA (1) CA2310796C (en)
DE (2) DE19925809A1 (en)
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MX (1) MXPA00005616A (en)

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DE10339191A1 (en) * 2003-08-22 2005-03-17 Sms Demag Ag Extending use of coil box between pre-train and finishing train for rolled material in hot rolling mill comprises applying pressing force to coil in mandrel-less coil box, and placing in roller table sink
US7077724B1 (en) 2005-06-06 2006-07-18 The Material Works, Ltd. Sheet metal scale removing water jet process
US8062095B2 (en) * 2006-09-14 2011-11-22 The Material Works, Ltd. Method of producing rust inhibitive sheet metal through scale removal with a slurry blasting descaling cell having improved grit flow
US8128460B2 (en) * 2006-09-14 2012-03-06 The Material Works, Ltd. Method of producing rust inhibitive sheet metal through scale removal with a slurry blasting descaling cell
US8066549B2 (en) * 2006-09-14 2011-11-29 The Material Works, Ltd. Method of producing rust inhibitive sheet metal through scale removal with a slurry blasting descaling cell having improved grit flow
JP4307503B2 (en) * 2007-12-21 2009-08-05 パナソニック株式会社 Battery can, manufacturing method thereof, and battery
DE102012214298A1 (en) 2012-08-10 2014-02-13 Sms Siemag Ag Process for the purification and / or descaling of a slab or slag by means of a scale scrubber and scale scrubber
CN112122371B (en) * 2019-06-25 2022-08-12 上海梅山钢铁股份有限公司 High-pressure water dephosphorization machine

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JP2001001029A (en) 2001-01-09
ES2341640T3 (en) 2010-06-24
CA2310796A1 (en) 2000-12-07
EP1059127B1 (en) 2010-03-24
US6295852B1 (en) 2001-10-02
DE19925809A1 (en) 2000-12-14
BR0002593A (en) 2001-01-02
DE50015893D1 (en) 2010-05-06
ATE461761T1 (en) 2010-04-15
CA2310796C (en) 2010-08-17
KR20010007192A (en) 2001-01-26
EP1059127A3 (en) 2003-10-22
MXPA00005616A (en) 2002-07-22
KR100632133B1 (en) 2006-10-11

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