EP2473295B1 - Method for adjusting the rolls of a roll stand and roll stand - Google Patents
Method for adjusting the rolls of a roll stand and roll stand Download PDFInfo
- Publication number
- EP2473295B1 EP2473295B1 EP10752302.9A EP10752302A EP2473295B1 EP 2473295 B1 EP2473295 B1 EP 2473295B1 EP 10752302 A EP10752302 A EP 10752302A EP 2473295 B1 EP2473295 B1 EP 2473295B1
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- EP
- European Patent Office
- Prior art keywords
- roll
- roll stand
- stand
- rolling
- work
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
- B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
- B21B31/24—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal by screws
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
- B21B37/60—Roll-force control; Roll-gap control by control of a motor which drives an adjusting screw
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
- B21B13/147—Cluster mills, e.g. Sendzimir mills, Rohn mills, i.e. each work roll being supported by two rolls only arranged symmetrically with respect to the plane passing through the working rolls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
- B21B2013/028—Sixto, six-high stands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/24—Roll wear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2271/00—Mill stand parameters
- B21B2271/02—Roll gap, screw-down position, draft position
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
- B21B38/105—Calibrating or presetting roll-gap
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49718—Repairing
Definitions
- the invention relates to a method for adjusting the rolls of a roll stand, wherein the roll stand has at least two cooperating work rolls, wherein one of the work rolls in the rolling stand for adjusting a roll gap is slidably disposed and wherein the other work roll in the rolling stand in a working position rotatable, but to define a Pass line in the direction normal to the surface of the rolling stock is determined immovable. Furthermore, the invention relates to a rolling mill with at least two cooperating work rolls.
- the rolling stand according to the invention may in particular be a 6-high, a 20-roll or a Z-high rolling stand.
- the US 5,479,809 or the EP 0 513 946 A2 describe an apparatus for leveling the upper edge of the lower work roll in rolling stands by means of a staircase stepped pair of wedges beneath each lower roll chock.
- the JP 08-229605 describes a rolling mill with an upper and a lower work roll, which are each formed at their ends with eccentric bushings which are mounted in worm wheels, which are rotated to adjust the roll gap by means of adjusting motors.
- the upper support roller including work roll for thickness control (adjustment of the roll gap) is moved vertically.
- the lower support roller remains together with work roll in the once set before rolling start position.
- the lower work roll is thus firmly on and is underlined for the purpose of accurate positioning with shims or with a movable auxiliary position (wedge or spindle adjustment).
- tolerance addition imbalances of the rolls of up to 0.5 mm / m can occur by tolerance addition imbalances of the rolls of up to 0.5 mm / m.
- Such imbalances influence the rolling process with respect to other control circuits, such as the flatness control, since these depend on measured values of the tension distribution over the strip cross section.
- the present invention is therefore based on the object to provide a method by which it is possible to ensure in a precise manner, the parallelism of the rolls, the manufacturing tolerances and imbalances by different wear, which determines the horizontal position of the rolls can be compensated , which makes the rolling process easier to control.
- the process is preferably carried out before rolling the rolling stock. It is also recommended after a roll change.
- the position determination according to step a) above takes place at a reference point of the roll chock of the lower work roll fixedly arranged in the roll stand.
- step a) above is preferably carried out in both axial end regions of the work roll fixedly arranged in the roll stand.
- the work rolls are preferably each supported by at least one back-up roll, wherein the adjustment after the above step c) takes place on the back-up roll of the work roll fixedly arranged in the roll stand.
- the adjustment is preferably carried out on the roll chock of the support roller.
- step c) The adjustment after the above step c) is further preferably carried out by using a tension or pressure spindle with combined right-left thread. It is also possible, however, the use of shims or Unterlegetechn.
- the rolling stand with at least two cooperating work rolls, wherein one of the work rolls in the rolling stand for adjusting a roll gap is slidably disposed and wherein the other work roll in the rolling stand in a working position rotatable, but is set immovable to define a pass line in the direction normal to the surface of the rolling characterized in that measuring means are provided for determining the position of the lower work roll fixedly arranged in the roll stand, that comparison means are provided for comparing the determined value of the layer with a desired value and that at least one adjusting element is provided for adjusting the lower work roll fixedly arranged in the roll stand as a function of the difference value between the determined value and the desired value determined by the comparison means.
- the roll chock has according to the invention a reference point for the measurement by the measuring means.
- the measuring means can be arranged permanently in the rolling stand or can be arranged exchangeably in the rolling stand for temporary measurement.
- the adjusting element is preferably a tension or pressure spindle with combined right-left thread.
- the invention is based on the idea to determine the position of the roll fixedly positioned in the roll stand, to compare this value with a target value and to compensate for the deviation between the actual and target value by an actuator before the rolling stock is rolled.
- the method is carried out after a roll change.
- the position of the roll can ideally be tapped on the roll bale, alternatively also at measuring points on the roll chocks.
- movable or stationary sensors can be used.
- the actuators can in the simplest form consist of inserts but also from individually adjustable auxiliary positions or from pairwise rotatable right-left threads, which are incorporated in printing or drawing spindles.
- Such spindles are for rolling mills from the EP 1 601 475 B1 known.
- the drive or operating side of the rolling stand is moved or underlaid in such a way that the "fixed" roller exactly reaches the setpoint.
- a rolling stand 5 is outlined, in which a total of four rollers are installed, namely two cooperating work rolls 1 and 2 and two support rollers 3, 4.
- Each roller 1, 2, 3, 4 is mounted in a chock and fixed in the rolling stand 5 , namely the lower work roll 2 in the chock 7, the lower support roll 4 in the chock 12, the upper work roll 1 in the chock 10 and the upper support roll 3 in the chock 11th
- the two lower rollers 2 and 4 are arranged "fixed", ie they are set in such a height in the rolling stand 5, that the uppermost point of the work roll 2 forms a pass line P for the (not shown) rolling stock.
- the lower work roll 2 In order to set a nip between the work rolls 1, 2, consequently, the lower work roll 2 remains in its height position; meanwhile, the upper work roll 1 together with the support roll 3 is moved vertically in the roll stand 5.
- the determination of the position S Ist is the work roll 2 fixedly arranged in the roll stand 5.
- a measuring means 8 is arranged in the roll stand 5. More precisely, there are two measuring means 8, which in the region of the two axial ends (s. Fig. 2 ) are provided.
- a reference point 13 reference point which is measured on the chock 7 (see FIG. Fig. 1 ) is arranged.
- the measured actual values S actual (or S actual and S actual 2 ) of the position are then compared with a stored nominal value S Soll .
- a comparison means 9 is used.
- an adjustment of the work roll 2 in the roll stand 5 then takes place in the vertical direction.
- at least one, preferably two adjusting elements 6 are used, which are used for height adjustment of the chock 7 of the work roll.
- Tensioning or pressure spindles 6, which are provided with a combined right and left hand thread, so that upon rotation of the spindle, the two axial end portions of the spindle are moved together or apart.
- the adjustment is chosen so that the position S of the fixed in the roll stand 5 arranged work roll 2 assumes the target value S Soll .
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
Description
Die Erfindung betrifft ein Verfahren zur Einstellung der Walzen eines Walzgerüsts, wobei das Walzgerüst mindestens zwei zusammenwirkende Arbeitswalzen aufweist, wobei eine der Arbeitswalzen im Walzgerüst zur Einstellung eines Walzspalts verschieblich angeordnet ist und wobei die andere Arbeitswalze im Walzgerüst in einer Arbeitsposition drehbar, aber zur Definition einer Passlinie in Richtung normal zur Oberfläche des Walzguts unverschieblich festgelegt ist. Des weiteren betrifft die Erfindung ein Walzgerüst mit mindestens zwei zusammenwirkenden Arbeitswalzen. Bei dem erfindungsgemäßen Walzgerüst kann es sich insbesondere um ein 6-High-, ein 20 Rollen- oder ein Z-High-Walzgerüst handeln.The invention relates to a method for adjusting the rolls of a roll stand, wherein the roll stand has at least two cooperating work rolls, wherein one of the work rolls in the rolling stand for adjusting a roll gap is slidably disposed and wherein the other work roll in the rolling stand in a working position rotatable, but to define a Pass line in the direction normal to the surface of the rolling stock is determined immovable. Furthermore, the invention relates to a rolling mill with at least two cooperating work rolls. The rolling stand according to the invention may in particular be a 6-high, a 20-roll or a Z-high rolling stand.
Es ist allgemein bekannt, die für das Walzen eines Walzguts sich in einem Gerüst befindlichen Arbeitswalzen - sowie die zumeist weiterhin verwendeten Stützwalzen - so anzuordnen, dass die "unteren" Walzen im Walzgerüst in einer definierten Lage in ihren Einbaustücken im Walzgerüst festgelegt werden, so dass eine Passlinie für das Walzgut definiert ist. Die "oberen" Walzen werden indes in Vertikalrichtung einstellbar gehalten, so dass die Größe des Walzspalts zwischen den beiden Arbeitswalzen eingestellt werden kann. Während für die "oberen" Walzen folglich entsprechende Stellmittel bekannt sind, um sie in der gewünschten bzw. benötigten Vertikalposition im Walzgerüst positionieren zu können, trifft dies für die "unteren" Walzen nicht zu, da diese nicht in Vertikalrichtung verstellbar sein müssen und sollen.It is generally known to arrange the work rolls located in a framework for the rolling of a rolling stock, as well as the support rolls, which continue to be used in most cases, in such a way that the "lower" rolls in the rolling stand are fixed in a defined position in their chocks in the rolling stand a pass line is defined for the rolling stock. Meanwhile, the "upper" rolls are kept adjustable in the vertical direction, so that the size of the nip between the two work rolls can be adjusted. Accordingly, while the "upper" rollers corresponding adjustment means are known to be able to position them in the desired or required vertical position in the rolling stand, this is not true for the "lower" rollers, since they do not have to be adjustable in the vertical direction and should.
Die
Die
Für die Lage der Walzen im Walzgerüst wird stets hoher Aufwand betrieben, um diese so parallel wie möglich zueinander zu halten, was nicht nur für die Herstellung eines Walzguts mit hinreichender Qualität erforderlich ist, sondern auch für einen optimalen Betrieb von sich an das Walzgerüst anschließenden Nachfolgeeinrichtungen (z. B. Umlenkrollen oder Haspelanlagen). Schiefstellungen von Walzen erzeugen im Walzprozess eine verzerrte Bandzugverteilung sowie störende Axialkräfte in den Walzenlagerungen, woraus sich Qualitätsminderungen und ein höherer Verschleiß ergeben.For the position of the rolls in the rolling mill always high effort is operated to keep them as parallel as possible to each other, which is not only necessary for the production of a rolling stock with sufficient quality, but also for optimum operation of the rolling stand subsequent Downstream equipment (eg pulleys or reels). Roller misalignments in the rolling process create a distorted strip tension distribution and disruptive axial forces in the roller bearings, resulting in quality reductions and higher wear.
Bei der Konstruktion des Walzgerüsts werden entsprechende Anstrengungen unternommen, um die Parallelität der Walzen zu gewährleisten. Problematisch ist dabei, dass bei der Größe der benötigten Bauteile (bis zu 20 m Höhe, bis zu 300 t Gewicht) die Grenzen für die erreichbaren Genauigkeiten und Toleranzen unter wirtschaftlichen Gesichtspunkten schnell erreicht sind. Bei der Montage von Gleitplatten, Druckstücken und anderen notwendigen Bauteilen addieren sich die Toleranzen zu einem größt- und kleinstmöglichen Wert.In constructing the rolling stand, appropriate efforts are made to ensure the parallelism of the rolls. The problem is that the size of the required components (up to 20 m height, up to 300 t weight), the limits for the achievable accuracies and tolerances are reached quickly from an economic point of view. When mounting sliding plates, thrust pieces and other necessary components, the tolerances add up to a maximum and minimum value.
Üblicherweise wird daher die obere Stützwalze samt Arbeitswalze zur Dickenregelung (Einstellung des Walzspalts) vertikal verfahren. Indes verbleibt die untere Stützwalze samt Arbeitswalze in der einmal vor Walzbeginn eingestellten Position. Die untere Arbeitswalze liegt also fest auf und ist zwecks genauer Positionierung mit Beilagplatten oder mit einer beweglichen Hilfsanstellung (Keil-oder Spindelanstellung) unterlegt. Hierbei können allerdings durch Toleranz-Addition Schieflagen der Walzen von bis zu 0,5 mm/m entstehen. Solche Schieflagen beeinflussen den Walzprozess bezüglich anderer Regelkreise wie die Planheitsregelung, da diese von Messwerten der Zugverteilung über den Bandquerschnitt abhängen.Usually, therefore, the upper support roller including work roll for thickness control (adjustment of the roll gap) is moved vertically. However, the lower support roller remains together with work roll in the once set before rolling start position. The lower work roll is thus firmly on and is underlined for the purpose of accurate positioning with shims or with a movable auxiliary position (wedge or spindle adjustment). In this case, however, can occur by tolerance addition imbalances of the rolls of up to 0.5 mm / m. Such imbalances influence the rolling process with respect to other control circuits, such as the flatness control, since these depend on measured values of the tension distribution over the strip cross section.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren vorzuschlagen, mit dem es möglich ist, in präziser Weise die Parallelität der Walzen sicherzustellen, wobei die Fertigungstoleranzen sowie die Schieflagen durch unterschiedlichen Verschleiß, der die horizontale Lage der Walzen mit bestimmt, ausgeglichen werden können, wodurch der Walzprozess leichter beherrscht werden können soll.The present invention is therefore based on the object to provide a method by which it is possible to ensure in a precise manner, the parallelism of the rolls, the manufacturing tolerances and imbalances by different wear, which determines the horizontal position of the rolls can be compensated , which makes the rolling process easier to control.
Die Lösung dieser Aufgabe durch die Erfindung ist dadurch gekennzeichnet, dass das Verfahren die Schritte aufweist:
- a) Ermittlung der Lage der fest im Walzgerüst angeordneten Arbeitswalze;
- b) Vergleichen des ermittelten Wertes der Lage mit einem Sollwert;
- c) Verstellen der fest im Walzgerüst angeordneten Arbeitswalze in Abhängigkeit des gemäß Schritt b) ermittelten Vergleichswerts mit mindestens einem Stellelement, so dass die Lage der fest im Walzgerüst angeordneten Arbeitswalze den Sollwert zumindest weitgehend erreicht.
- a) determination of the position of the work roll fixedly arranged in the roll stand;
- b) comparing the determined value of the position with a desired value;
- c) Adjustment of the work roll fixedly arranged in the roll stand as a function of the comparison value determined according to step b) with at least one control element, so that the position of the work roll fixedly arranged in the roll stand at least largely reaches the desired value.
Das Verfahren wird dabei bevorzugt vor dem Walzen des Walzguts durchgeführt. Es empfiehlt sich auch nach einem Walzenwechsel.The process is preferably carried out before rolling the rolling stock. It is also recommended after a roll change.
Die Lageermittlung nach obigem Schritt a) erfolgt erfindungsgemäß an einer Referenzstelle des Walzen-Einbaustücks der fest im Walzgerüst angeordneten unteren Arbeitswalze.According to the invention, the position determination according to step a) above takes place at a reference point of the roll chock of the lower work roll fixedly arranged in the roll stand.
Die Lageermittlung nach obigem Schritt a) erfolgt bevorzugt in beiden axialen Endbereichen der fest im Walzgerüst angeordneten Arbeitswalze.The determination of the location after step a) above is preferably carried out in both axial end regions of the work roll fixedly arranged in the roll stand.
Die Arbeitswalzen sind bevorzugt jeweils von mindestens einer Stützwalze gestützt, wobei die Verstellung nach obigem Schritt c) an der Stützwalze der fest im Walzgerüst angeordneten Arbeitswalze erfolgt. Die Verstellung erfolgt bevorzugt am Walzen-Einbaustück der Stützwalze.The work rolls are preferably each supported by at least one back-up roll, wherein the adjustment after the above step c) takes place on the back-up roll of the work roll fixedly arranged in the roll stand. The adjustment is preferably carried out on the roll chock of the support roller.
Das Verstellen nach obigem Schritt c) erfolgt weiterhin bevorzugt durch Verwendung einer Zug- oder Druckspindel mit kombiniertem Recht-Links-Gewinde. Möglich ist aber auch die Verwendung von Beilag- oder Unterlegescheiben.The adjustment after the above step c) is further preferably carried out by using a tension or pressure spindle with combined right-left thread. It is also possible, however, the use of shims or Unterlegescheiben.
Das Walzgerüst mit mindestens zwei zusammenwirkenden Arbeitswalzen, wobei eine der Arbeitswalzen im Walzgerüst zur Einstellung eines Walzspalts verschieblich angeordnet ist und wobei die andere Arbeitswalze im Walzgerüst in einer Arbeitsposition drehbar, aber zur Definition einer Passlinie in Richtung normal zur Oberfläche des Walzguts unverschieblich festgelegt ist, zeichnet sich dadurch aus, dass Messmittel vorhanden sind zur Ermittlung der Lage der fest im Walzgerüst angeordneten unteren Arbeitswalze, dass Vergleichsmittel vorhanden sind zum Vergleichen des ermittelten Wertes der Lage mit einem Sollwert und dass mindestens ein Stellelement vorhanden ist zum Verstellen der fest im Walzgerüst angeordneten unteren Arbeitswalze in Abhängigkeit des von den Vergleichsmitteln ermittelten Differenzwerts zwischen dem ermittelten Wert und dem Sollwert.The rolling stand with at least two cooperating work rolls, wherein one of the work rolls in the rolling stand for adjusting a roll gap is slidably disposed and wherein the other work roll in the rolling stand in a working position rotatable, but is set immovable to define a pass line in the direction normal to the surface of the rolling characterized in that measuring means are provided for determining the position of the lower work roll fixedly arranged in the roll stand, that comparison means are provided for comparing the determined value of the layer with a desired value and that at least one adjusting element is provided for adjusting the lower work roll fixedly arranged in the roll stand as a function of the difference value between the determined value and the desired value determined by the comparison means.
Das Walzen-Einbaustück weist erfindungsgemäß eine Referenzstelle für die Messung durch das Messmittel auf.The roll chock has according to the invention a reference point for the measurement by the measuring means.
Die Messmittel können permanent im Walzgerüst angeordnet sein oder auch im Walzgerüst zur temporären Messung einwechselbar angeordnet sein.The measuring means can be arranged permanently in the rolling stand or can be arranged exchangeably in the rolling stand for temporary measurement.
Das Verstellelement ist bevorzugt eine Zug- oder Druckspindel mit kombiniertem Recht-Links-Gewinde.The adjusting element is preferably a tension or pressure spindle with combined right-left thread.
Der Erfindung liegt der Gedanke zugrunde, die Lage der im Walzgerüst fest positionierten Walze zu ermitteln, diesen Wert mit einem Sollwert zu vergleichen und die Abweichung zwischen Ist- und Soll-Wert durch ein Stellglied auszugleichen, bevor das Walzgut gewalzt wird. Bevorzugt erfolgt die Durchführung des Verfahrens nach einem Walzenwechsel.The invention is based on the idea to determine the position of the roll fixedly positioned in the roll stand, to compare this value with a target value and to compensate for the deviation between the actual and target value by an actuator before the rolling stock is rolled. Preferably, the method is carried out after a roll change.
Die Lage der Walze kann idealerweise am Walzenballen abgegriffen werden, alternativ auch an Messpunkten an den Walzen-Einbaustücken. Zum Abgreifen der Walzenlage können bewegliche oder stationäre Sensoren zum Einsatz kommen.The position of the roll can ideally be tapped on the roll bale, alternatively also at measuring points on the roll chocks. For picking In the roll position, movable or stationary sensors can be used.
Die Stellglieder können in einfachster Form aus Beilagen bestehen aber auch aus einzeln justierbaren Hilfsanstellungen oder aus paarweise drehbaren Rechts-Links-Gewinden, die in Druck- oder Zugspindeln eingearbeitet sind. Solche Spindeln sind für Walzwerke aus der
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:
- Fig. 1
- die Seitenansicht eines Walzgerüsts mit zwei Arbeits- und zwei Stützwalzen in schematischer Darstellung und
- Fig. 2
- einen Teil des Walzgerüsts in Walzrichtung gesehen.
- Fig. 1
- the side view of a rolling stand with two working and two support rollers in a schematic representation and
- Fig. 2
- a part of the rolling stand seen in the rolling direction.
In den Figuren ist ein Walzgerüst 5 skizziert, in das insgesamt vier Walzen eingebaut sind, nämlich zwei zusammenwirkende Arbeitswalzen 1 und 2 sowie zwei Stützwalzen 3, 4. Jede Walze 1, 2, 3, 4 ist in einem Einbaustück gelagert und im Walzgerüst 5 befestigt, nämlich die untere Arbeitswalze 2 im Einbaustück 7, die untere Stützwalze 4 im Einbaustück 12, die obere Arbeitswalze 1 im Einbaustück 10 und die obere Stützwalze 3 im Einbaustück 11.In the figures, a
Die beiden unteren Walzen 2 und 4 sind dabei "fest" angeordnet, d. h. sie sind in einer solchen Höhe im Walzgerüst 5 festgelegt, dass die oberste Stelle der Arbeitswalze 2 eine Passlinie P für das (nicht dargestellte) Walzgut bildet. Um zwischen den Arbeitswalzen 1, 2 einen Walzspalt einzustellen, verbleibt demzufolge die untere Arbeitswalze 2 in ihrer Höhenposition; indes wird die obere Arbeitswalze 1 samt Stützwalze 3 vertikal im Walzgerüst 5 verschoben.The two
Um vor dem Walzen eines Walzguts die Walzen im Walzgerüst 5 optimal einzustellen, wird wie folgt vorgegangen:In order to optimally adjust the rolls in the
Zunächst erfolgt die Ermittlung der Lage SIst der fest im Walzgerüst 5 angeordneten Arbeitswalze 2. Hierfür ist ein Messmittel 8 im Walzgerüst 5 angeordnet. Genauer gesagt handelt es sich um zwei Messmittel 8, die im Bereich der beiden axialen Enden (s.
Die gemessenen Ist-Werte SIst (bzw. SIst1 und SIst2) der Lage werden dann mit einem gespeicherten Sollwert SSoll verglichen. Hierfür wird ein Vergleichsmittel 9 eingesetzt.The measured actual values S actual (or S actual and S actual 2 ) of the position are then compared with a stored nominal value S Soll . For this purpose, a comparison means 9 is used.
In Abhängigkeit der festgestellten Differenz zwischen Ist- und Soll-Wert erfolgt dann ein Verstellen der Arbeitswalze 2 im Walzgerüst 5 in vertikale Richtung. Hierfür werden mindestens ein, vorzugsweise zwei Stellelemente 6 eingesetzt, die zur Höhenverstellung des Einbaustücks 7 der Arbeitswalze zum Einsatz kommen.Depending on the detected difference between the actual value and the desired value, an adjustment of the
Schematisch angedeutet sind in
Es versteht sich von selbst, dass der im Vergleichsmittel 9 ermittelte Differenzwert zwischen Ist- und Soll-Lage durch geeignete Steuer- bzw. Regelungsmittel, die nicht in den Figuren dargestellt sind, in eine Verstellbewegung umgesetzt wird.It goes without saying that the difference value between the actual position and the target position determined in the comparison means 9 is converted into an adjustment movement by suitable control or regulating means, which are not shown in the figures.
- 11
- Walze (Arbeitswalze)Roller (work roll)
- 22
- Walze (Arbeitswalze)Roller (work roll)
- 33
- Walze (Stützwalze)Roller (support roller)
- 44
- Walze (Stützwalze)Roller (support roller)
- 55
- Walzgerüstrolling mill
- 66
- Stellelementactuator
- 77
-
Walzen-Einbaustück der Arbeitswalze 2Roller chock of the
work roll 2 - 88th
- Messmittelmeasuring Equipment
- 99
- Vergleichsmittelcomparison means
- 1010
-
Walzen-Einbaustück der Arbeitswalze 1Roller chock of the
work roll 1 - 1111
-
Walzen-Einbaustück der Stützwalze 3Roller chock of the back-up
roller 3 - 1212
-
Walzen-Einbaustück der Stützwalze 4Roller chock of the
support roller 4 - 1313
- Referenzstellereference point
- SS
- Lage der ArbeitswalzePosition of the stripper
- SIst S is
- Ist-Lage der ArbeitswalzeActual position of the work roll
- SSoll S Soll
- Soll-Lage der ArbeitswalzeTarget position of the work roll
- WW
- Walzrichtungrolling direction
- PP
- Passliniepass line
Claims (15)
- Method of setting the rolls (1, 2, 3, 4) of a roll stand (5), wherein the roll stand (5) comprises at least two co-operating work rolls (1, 2), wherein one of the work rolls (1) is arranged in the roll stand (5) to be displaceable for setting a rolling gap and wherein the other work roll (2) is located in the roll stand (5) to be rotatable in a working position, but, for definition of a pass line (P), to be non-displaceable in a direction normal to the surface of the rolling stock,
characterised in that
the method for setting the height positions of the lower work rolls (2) prior to rolling comprises the steps:a) determining the position (SIst) of the lower work roll (2), which is fixedly arranged in the roll stand (5), by a measuring means (8) at a reference point (13) of the roll chock;b) comparing the determined value (SIst) of the position with a threshold value (SSoll); andc) adjusting the lower work roll (2), which is arranged in the roll stand (5) and mounted in a chock (7), in height in vertical direction in dependence on the comparison value, which is determined in accordance with step b) by at least one setting element (6) above the lower backing roll (4) so that the position (S) of the lower work roll (2), which is arranged in the roll stand (5), for forming a pass line (P) for the rolling stock achieves the target value (SSoll). - Method according to claim 1, characterised in that it is carried out - with or without rolling stock in the stand - prior to rolling of the rolling stock.
- Method according to claim 1 or 2, characterised in that it is carried out - with or without rolling stock in the stand - after a roll change.
- Method according to any one of claims 1 to 3, characterised in that the positional determination in accordance with step a) according to claim 1 is carried out in both axial end regions of the work roll (2) fixedly arranged in the roll stand (5).
- Method according to any one of claims 1 to 4, characterised in that the work rolls (1, 2) are each supported by at least one backing roll (3, 4), wherein the adjustment in accordance with step c) according to claim 1 is carried at the backing roll (4) of the work roll (2) fixedly arranged in the roll stand (5).
- Method according to claim 5, characterised in that the adjustment is carried at the roll chock (7) of the backing roll (4).
- Method according to any one of claims 1 to 6, characterised in that the adjustment in accordance with step c) according to claim 1 is carried out by use of a tension or compression spindle with a combined righthand/lefthand thread.
- Method according to any one of claims 1 to 6, characterised in that the adjustment in accordance with step c) according to claim 1 is carried out by use of shims or washers.
- Roll stand (5) comprising at least two co-operating work rolls (1, 2), wherein one of the work rolls (1) is arranged in the roll stand (5) to be displaceable for setting a rolling gap and wherein the other work roll (2) is located in the roll stand (5) to be rotatable in a working position, but, for definition of a pass line (P), to be non-displaceable in a direction normal to the surface of the rolling stock during rolling, particularly for carrying out the method according to any one of claims 1 to 8,
characterised in that
measuring means (8) are present for determining the position (SIst) at a reference point (13) of the lower work roll (2), which is fixedly arranged in the roll stand (5),
comparison means (9) are present for comparing the determined value (SIst) of the position with a target value (SSoll) and
at least one setting element (6) is present for adjusting the chock (7) of the lower work roll (2), which is arranged in the roll stand (5), in dependence on the difference value, which is determined by the comparison means (9), between the determined value (SIst) and the target value (SSoll), wherein a pass line (P) for rolling stock can be formed by the uppermost point of the lower work roll (2). - Roll stand according to claim 9, characterised in that the measuring means (8) are positioned for measuring the position (SIst) of the roll circumference of the work roll (2).
- Roll stand according to claim 10, characterised in that the roll chock (7) has a reference point (13) for the measurement by the measuring means (8).
- Roll stand according to any one of claims 9 to 11, characterised in that the measuring means (8) are permanently arranged in the roll stand (1).
- Roll stand according to any of claims 9 to 11, characterised in that the measuring means (8) are exchangeably arranged in the roll stand (1) for temporary measurement.
- Roll stand according to any one of claims 9 to 13, characterised in that the adjusting element is a tension or compression spindle with combined righthand/lefthand thread.
- Roll stand according to any one of claims 9 to 14, characterised in that the roll stand is a 6-high, a 20-roll or a Z-high roll stand.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009039501A DE102009039501A1 (en) | 2009-08-31 | 2009-08-31 | Method for adjusting the rolls of a roll stand and roll stand |
PCT/EP2010/005207 WO2011023378A1 (en) | 2009-08-31 | 2010-08-25 | Method for adjusting the rolls of a roll stand and roll stand |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2473295A1 EP2473295A1 (en) | 2012-07-11 |
EP2473295B1 true EP2473295B1 (en) | 2015-01-21 |
Family
ID=43501184
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10752302.9A Not-in-force EP2473295B1 (en) | 2009-08-31 | 2010-08-25 | Method for adjusting the rolls of a roll stand and roll stand |
Country Status (6)
Country | Link |
---|---|
US (2) | US9527121B2 (en) |
EP (1) | EP2473295B1 (en) |
CN (1) | CN102481609B (en) |
DE (1) | DE102009039501A1 (en) |
RU (1) | RU2503514C2 (en) |
WO (1) | WO2011023378A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013041083A2 (en) * | 2011-09-23 | 2013-03-28 | Sms Meer Gmbh | Rolling mill and rolling method |
BR112018015432A2 (en) * | 2016-02-02 | 2018-12-18 | Nippon Steel & Sumitomo Metal Corporation | A cast piece curvature detecting device and a curvature detecting method of a cast piece |
JP7040611B2 (en) * | 2018-05-18 | 2022-03-23 | 日本製鉄株式会社 | Rolling machine and setting method of rolling mill |
CN109604217B (en) * | 2018-12-20 | 2022-02-15 | 东风小康汽车有限公司重庆分公司 | Method and system for automatically adjusting cleaning roller spacing |
CN112658063B (en) * | 2020-11-19 | 2023-02-03 | 首钢京唐钢铁联合有限责任公司 | Installation accuracy control method for roller box supporting roller of straightening machine |
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SU937068A1 (en) * | 1980-07-03 | 1982-06-23 | Всесоюзный ордена Ленина научно-исследовательский и проектно-конструкторский институт металлургического машиностроения | Hydraulic screwdown apparatus of rolling stand |
JPS5855101A (en) * | 1981-09-28 | 1983-04-01 | Nippon Steel Corp | Rolling method and rolling mill for bar and wire rod |
FR2521040A1 (en) * | 1982-02-09 | 1983-08-12 | Sacilor | Controlling profile of rolled prods. e.g. railway rails - where numerous sensors are used to monitor and adjust positions of profiled work rolls |
JPS6152922A (en) * | 1984-08-23 | 1986-03-15 | Yaskawa Electric Mfg Co Ltd | Automatic rolling reduction device of hot reversible rolling mill |
BR8801799A (en) * | 1987-08-26 | 1989-03-21 | Lauener Eng Ag | ARMATION FOR LAMINATION OR LAMINATED FOUNDATION |
FR2645051A1 (en) * | 1989-03-28 | 1990-10-05 | Clecim Sa | DEVICE FOR DETERMINING THE POSITION OF CYLINDERS OF A ROLLING MILL |
SU1704871A1 (en) | 1990-03-19 | 1992-01-15 | Ростовское Отделение Всесоюзного Научно-Исследовательского, Проектного И Проектно-Конструкторского Института По Комплексной Электрификации Промышленных Объектов "Тяжпромэлектропроект" Им.Ф.Б.Якубовского | Apparatus for compensating rolling stand roll eccentricity value |
DE4035276C1 (en) * | 1990-11-02 | 1992-05-07 | Mannesmann Ag, 4000 Duesseldorf, De | |
DE4115958C2 (en) * | 1991-05-13 | 1994-04-07 | Mannesmann Ag | Device for aligning the upper edge of the lower work roll with the rolling line |
DE4141230A1 (en) * | 1991-12-13 | 1993-06-24 | Siemens Ag | ROLLING PLAN CALCULATION METHOD |
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DE50214899D1 (en) * | 2001-12-12 | 2011-03-17 | Sms Siemag Ag | DEVICE FOR MEASURING THE ROLL OF THE ROLL BETWEEN WORKING ROLLERS OF A COLD OR WARM ROLLING SCAFFOLD |
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-
2009
- 2009-08-31 DE DE102009039501A patent/DE102009039501A1/en not_active Withdrawn
-
2010
- 2010-08-25 RU RU2012112225/02A patent/RU2503514C2/en not_active IP Right Cessation
- 2010-08-25 EP EP10752302.9A patent/EP2473295B1/en not_active Not-in-force
- 2010-08-25 WO PCT/EP2010/005207 patent/WO2011023378A1/en active Application Filing
- 2010-08-25 US US13/393,165 patent/US9527121B2/en not_active Expired - Fee Related
- 2010-08-25 CN CN201080039536.4A patent/CN102481609B/en not_active Expired - Fee Related
-
2015
- 2015-09-02 US US14/843,369 patent/US20150375283A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP2473295A1 (en) | 2012-07-11 |
US9527121B2 (en) | 2016-12-27 |
CN102481609B (en) | 2015-02-04 |
DE102009039501A1 (en) | 2011-03-03 |
RU2503514C2 (en) | 2014-01-10 |
US20150375283A1 (en) | 2015-12-31 |
US20120151980A1 (en) | 2012-06-21 |
RU2012112225A (en) | 2013-10-10 |
CN102481609A (en) | 2012-05-30 |
WO2011023378A1 (en) | 2011-03-03 |
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