EP1453620B1 - Device for measuring the roll gap between the working rollers of a cold or warm rolling stand - Google Patents

Device for measuring the roll gap between the working rollers of a cold or warm rolling stand Download PDF

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Publication number
EP1453620B1
EP1453620B1 EP02787736A EP02787736A EP1453620B1 EP 1453620 B1 EP1453620 B1 EP 1453620B1 EP 02787736 A EP02787736 A EP 02787736A EP 02787736 A EP02787736 A EP 02787736A EP 1453620 B1 EP1453620 B1 EP 1453620B1
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EP
European Patent Office
Prior art keywords
bending
cylinder
roll gap
piston
rolling gap
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.)
Revoked
Application number
EP02787736A
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German (de)
French (fr)
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EP1453620A1 (en
Inventor
Dirk TÄUBER
Dieter Daub
Hartmut Pawelski
Josef Zeppenfeld
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SMS Group GmbH
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SMS Siemag AG
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Priority claimed from DE10202526.6A external-priority patent/DE10202526B4/en
Application filed by SMS Siemag AG filed Critical SMS Siemag AG
Publication of EP1453620A1 publication Critical patent/EP1453620A1/en
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Classifications

    • 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
    • B21B29/00—Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls ; Roll bending devices, e.g. hydraulic actuators acting on roll shaft ends

Definitions

  • the invention relates to a device for measuring a roll gap between work rolls of a cold or hot rolling stand for the rolling of narrow or wide metal strips, in particular of non-ferrous metal strips, by means of at least one position or displacement sensor for indirect roll gap reference measurement.
  • the means for measuring the roll gap are therefore also used to control the skew about the employment or the transducer on the support roller chocks, whereby a direct roll gap measurement is given.
  • the skew of the nip is not precise enough adjustable. The reason is that the measurement is too far away from the roll gap.
  • the invention has for its object to provide a suitable even for such cases of the lateral band path roll gap measurement at low rolling force, which is also designed to be protected and low maintenance.
  • the position or displacement transducer is between the lead blocks or work roll chocks or between the stationary cylinder block and a movable nip reference measurement member installed and it is a regulation of the measured at the bending blocks inclined position of the rolled strip provided via a position of the roll gap influencing piston-cylinder units and / or setting a different bending forces in the, the roll gap influencing piston-cylinder units.
  • a practical embodiment may be designed according to other features in that the position or Weggeber penetrates a cylinder liner, at the front side of a magnet for the encoder rod of the magnetostrictive transducer is arranged in a central cavity of the piston for the bending cylinder and that the encoder rod, the piston rod penetrates the bending cylinder penetrating in an axial central bore of the piston rod, which ends at a vent hole.
  • a position or displacement sensor is adjustable, which is fixedly arranged in a bending block is.
  • the guide tube is fixedly arranged in a bending block and slidably guided in the opposite bending block.
  • another embodiment is provided such that the guide tube is slidably mounted in a guide bush in an opposite bending block.
  • the work rolls 1a and 1b ( Fig. 1 ) are shown partially cut and are guided by a respective support roller 2.
  • the work roll chocks 3a, 3b are guided in the uprights as usual.
  • the work rolls 1a and 1b are also held in bending blocks 4a and 4b vertically displaceable to the nip 7.
  • the bending blocks 4a, 4b are attached to the (not shown) roll stand of the rolling stand.
  • the bending cylinders 5a, 5b are arranged.
  • a position or displacement sensor 6 is installed for the roll gap reference measurement and integrated into the bending cylinder 5a, 5b.
  • the drawn position or displacement sensor 6 is designed as a magnetostrictive encoder ( Fig. 1 and 2 ). From the measured values of the position or displacement sensor 6, a control system or a control loop is constructed.
  • the measured control values bring about an exact adjustment of the roll gap 7, in order to achieve optimum threading or unthreading into the closed roll gap 7 and for optimum rolling of metal strips (made of steel or non-ferrous materials) with desired flatness and the required profile.
  • the magnetostrictive position or displacement sensor 6 is in Fig. 2 shown enlarged.
  • the position or displacement sensor 6 penetrates a cylinder bushing 8, on the end face 8a of which a magnet 9 for the encoder rod 10 of the magnetostrictive transducer 6a is arranged in a centric cavity 11a of the piston 11.
  • the piston 11 carrying the piston 11b has an axial central bore 12, in which the encoder rod 10 is arranged.
  • the central bore 12 terminates at a vent hole 13 with a locking screw 14.
  • Fig. 3 is in each case a cylinder block 15, a guide tube 16 is arranged near the nip 7.
  • the guide tube 16 guided in the bending block 4b opposite by means of a guide bush 17 and the position or displacement sensor 6 is guided or mounted by means of a guide rod 18.
  • FIG. 4 In the diagram of Fig. 4 the relationship between the slant of the roll gap 7 (measured at different locations) and the lateral running of the rolled strip (made of steel or softer non-ferrous materials) is shown.
  • the coefficient of determination R 2 of the linear regression means close to "1" a favorable value and is advantageous as a controlled variable. In the lower region, R 2 is smaller than in the upper region and is less suitable as a controlled variable. From these contexts follows that a regulation of the inclination of the rolled strip by measuring at the bending blocks 4a, 4b can significantly minimize the unwanted lateral band course.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Actuator (AREA)
  • Metal Rolling (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Crushing And Grinding (AREA)
  • Measuring Arrangements Characterized By The Use Of Fluids (AREA)
  • Continuous Casting (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Abstract

A device for measuring the roll gap ( 7 ) between the working rollers ( 1 a: 1 b) of a cold or warm rolling stand for rolling out narrow or wide strips of metal, especially NE metal strips, by means of roll gap sensors ( 6 ) whose signals are transmitted to the servo-valves of the compressed oil control as a roll gap setpoint value for the piston cylinder units influencing said roll gap ( 7 ), and used to provide a roller gap measurement which is also suitable for such cases involving the lateral progression of said strip. In order to achieve said aim, the position or travel sensor ( 6 ) is provided in at least one bending cylinder ( 5 a ;5 b) for the working cylinder ( 1 a, 1 b) for indirect reference measurement of the roll gap via the positively or negatively acting bending cylinders ( 5 a; 5 b).

Description

Die Erfindung betrifft eine Einrichtung zur Messung eines Walzspaltes zwischen Arbeitswalzen eines Kalt- oder Warmwalzgerüstes für das Auswalzen von schmalen oder breiten Metallbändern, insbesondere von NE-Metallbändem, mittels zumindest eines Positions- oder Weggebers zur indirekten Walzspalt-Referenzmessung.The invention relates to a device for measuring a roll gap between work rolls of a cold or hot rolling stand for the rolling of narrow or wide metal strips, in particular of non-ferrous metal strips, by means of at least one position or displacement sensor for indirect roll gap reference measurement.

Die bisherige Bauweise zur Walzspaltmessung erfolgt über Messzangen zwischen den Arbeitswalzen ( DE-OS 25 03 130 ) an abgesetzten Durchmessern neben den Walzballen auf der Antriebsseite und auf der Bedienungsseite des Walzgerüstes. Die Anordnung in der Nähe der Bandkante verursacht oft Beschädigungen der Einrichtung durch Bandverlauf oder Bandriss. Nachteilig ist bei solchen Bauweisen der hohe Wartungsaufwand und ein Ausschwenken der Einrichtung in die Wartungsstellung behindert die Konstruktion anderer erforderlicher Erzeugnisse.The previous design for roll gap measurement via measuring tongs between the work rolls ( DE-OS 25 03 130 ) at stepped diameters next to the rolling bales on the drive side and on the operating side of the roll stand. The location near the edge of the tape often causes damage to the device due to tape run or tape breakage. A disadvantage of such designs of high maintenance and swinging the device into the maintenance position hinders the construction of other required products.

Aus der EP 0 698 428 A1 ist es bekannt, zur Erfassung des Walzspaltes zwischen zwei Arbeitswalzen eines Walzgerüstes eine Arbeitswalzen-Biegevorrichtung vorzusehen. Die Arbeitswalzen-Einbaustücke sind über jewells zwei auf gegenüberliegenden Seiten der jeweiligen Arbeitswalze angeordnete Hydraulikzylinder anstellbar, die gegenüber dem Walzenständer verstellbar sind. In den Hydraulikzylindern sind, auf die Blegezylinder in Reihe folgend, Positionsgeber eingebaut, denen eine Auswerteeinrichtung zur Bestimmung des Walzspaltes aus den von den Positionsgebern gelieferten Positionswerte nachgeordnet ist. Die ermittelten Positionswerte sind je nach Lage des betreffenden Einbaustücks unterschiedlich. Aus acht Positionswerten wird in einer außerhalb angeordneten Auswerteeinrichtung der Walzspalt errechnet.From the EP 0 698 428 A1 It is known to provide a work roll bending device for detecting the nip between two work rolls of a rolling stand. The work roll chocks are over jewells two arranged on opposite sides of the respective work roll hydraulic cylinder adjustable, which are adjustable relative to the roll stand. Positioners are installed in the hydraulic cylinders, following the leveling cylinders in series, to which an evaluation device for determining the roll gap from the position values delivered by the position sensors is arranged downstream. The determined position values differ depending on the position of the relevant chock. From eight position values, the rolling gap is calculated in an evaluation device arranged outside.

Unter der Erscheinung, dass durch die Biege-Hysterese der Arbeitswalzen sich Differenzen im Walzspalt von der Antriebsseite zur Bedienungsseite einstellen, können diese Differenzen am Geber der hydraulischen Anstellung nicht erfasst werden. Bei schmalen weichen Metallbändern wird dadurch ein erheblicher Bandverlauf beim Ein- und Ausfädeln verursacht. Die Einrichtungen zur Messung des Walzspaltes dienen daher auch zur Regelung der Schräglage über die Anstellung oder die Wegaufnehmer an den Stützwalzen-Einbaustücken, wodurch eine direkte Walzspaltmessung gegeben ist. Dabei ist die Schräglage des Walzspaltes nicht präzise genug einstellbar. Der Grund Ist, dass die Messung zu weit vom Walzspalt entfernt ist. Bekannte Einrichtungen arbeiten zwar dennoch genau, sind aber aufwändig und daher teuer und leicht zu beschädigen.Due to the fact that the bending hysteresis of the work rolls causes differences in the roll gap from the drive side to the operating side, these differences can not be detected at the hydraulic adjustment sender. In narrow soft metal bands, this causes a considerable band progression during threading and unthreading. The means for measuring the roll gap are therefore also used to control the skew about the employment or the transducer on the support roller chocks, whereby a direct roll gap measurement is given. The skew of the nip is not precise enough adjustable. The reason is that the measurement is too far away from the roll gap. Although known devices work well, but are complex and therefore expensive and easy to damage.

Der Erfindung liegt die Aufgabe zugrunde, eine auch für solche Fälle des seitlichen Bandverlaufs geeignete Walzspaltmessung bei niedriger Walzkraft zu schaffen, die zudem geschützt und wartungsarm ausgebildet ist.The invention has for its object to provide a suitable even for such cases of the lateral band path roll gap measurement at low rolling force, which is also designed to be protected and low maintenance.

Die gestellte Aufgabe wird erfindungsgemäß durch den Gegenstand des Anspruchs 1 gelöst.The stated object is achieved by the subject matter of claim 1.

Demnach ist der Positions- oder Weggeber zwischen den Blegeblöcken oder den Arbeitswalzen-Einbaustücken oder zwischen dem feststehenden Zylinderblock und einem beweglichen Bauteil zur Indirekten Walzspalt-Referenzmessung eingebaut und es ist eine Regelung der an den Biegeblöcken gemessenen Schräglage des Walzbandes vorgesehen über eine Anstellung der den Walzspalt beeinflussenden Kolben-Zylinder-Einheiten und/oder über eine Einstellung unterschiedlicher Biegekräfte in den, den Walzspalt beeinflussenden Kolben-Zylinder-Einheiten.Thus, the position or displacement transducer is between the lead blocks or work roll chocks or between the stationary cylinder block and a movable nip reference measurement member installed and it is a regulation of the measured at the bending blocks inclined position of the rolled strip provided via a position of the roll gap influencing piston-cylinder units and / or setting a different bending forces in the, the roll gap influencing piston-cylinder units.

Eine praktische Ausführungsform kann nach anderen Merkmalen dahingehend gestaltet sein, dass der Positions- oder Weggeber eine Zylinderbuchse durchdringt, an deren Stirnseite ein Magnet für die Geberstange des magnetostriktiven Wandlers in einem zentrischen Hohlraum des Kolbens für den Biegezylinder angeordnet ist und dass die Geberstange, die Kolbenstange des Biegezylinders durchdringend in einer axialen Mittelbohrung der Kolbenstange verläuft, die an einer Entlüftungsbohrung endet.A practical embodiment may be designed according to other features in that the position or Weggeber penetrates a cylinder liner, at the front side of a magnet for the encoder rod of the magnetostrictive transducer is arranged in a central cavity of the piston for the bending cylinder and that the encoder rod, the piston rod penetrates the bending cylinder penetrating in an axial central bore of the piston rod, which ends at a vent hole.

Nach weiteren Merkmalen ist vorgesehen, dass in einem Zylinderblock für die Blegezylinder in einem Führungsrohr ein Positions- oder Weggeber verstellbar ist, der in einem Biegeblock fest angeordnet ist, ist.According to further features, it is provided that in a cylinder block for the Blegezylinder in a guide tube, a position or displacement sensor is adjustable, which is fixedly arranged in a bending block is.

Weiterhin ist vorteilhaft, dass das Führungsrohr in einem Biegeblock fest angeordnet und im gegenüberliegenden Biegeblock gleitend geführt ist.Furthermore, it is advantageous that the guide tube is fixedly arranged in a bending block and slidably guided in the opposite bending block.

Dabei ist noch eine Ausgestaltung derart vorgesehen, dass das Führungsrohr in einer Führungsbuchse in einem gegenüberliegenden Biegeblock gleitend gelagert ist.In this case, another embodiment is provided such that the guide tube is slidably mounted in a guide bush in an opposite bending block.

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden nachstehend näher erläutert.Embodiments of the invention are illustrated in the drawing and are explained in more detail below.

Es zeigen:

Fig. 1
einen Teil-Querschnitt durch die Arbeitswalzen eines Warm- oder Kaltwalzgerüstes mit einem axialen Schnitt durch einen Biegezy- linder,
Fig. 2
einen axialen Schnitt durch den Biegezylinder mit einem Positi- onsgeber in dessen Innerem,
Fig. 3
einen Schnitt durch eine alternative Ausführungsform zwischen den Biegeblöcken oder den Arbeitswalzen-Einbaustücken und
Fig. 4
ein Diagramm zur Schräglage des Bandes zum Verlauf des Band- kopfes.
Show it:
Fig. 1
a partial cross section through the work rolls of a hot or cold rolling mill with an axial section through a bending cylinder,
Fig. 2
an axial section through the bending cylinder with a position transmitter in its interior,
Fig. 3
a section through an alternative embodiment between the bending blocks or the work roll chocks and
Fig. 4
a diagram of the inclination of the tape to the course of the tape head.

Die Arbeitswalzen 1a und 1b (Fig. 1) sind teilweise geschnitten dargestellt und werden durch jeweils eine Stützwalze 2 geführt. Die Arbeitswalzen-Einbaustücke 3a, 3b sind in den Ständern wie üblich geführt.The work rolls 1a and 1b ( Fig. 1 ) are shown partially cut and are guided by a respective support roller 2. The work roll chocks 3a, 3b are guided in the uprights as usual.

Die Arbeitswalzen 1a und 1b sind ferner in Biegeblöcken 4a und 4b senkrecht verschieblich zum Walzspalt 7 gehalten. Die Biegeblöcke 4a, 4b sind am (nicht gezeichneten) Walzenständer des Walzgerüstes befestigt. In den Biegeblöcken 4a, 4b sind die Biegezylinder 5a, 5b angeordnet. In jedem Biegezylinder 5a, 5b ist ein Positions- oder Weggeber 6 zur Walzspalt-Referenzmessung eingebaut und in den Biegezylinder 5a, 5b integriert. Der gezeichnete Positions- oder Weggeber 6 ist als magnetostriktiver Geber ausgeführt (Fig. 1 und 2). Aus den gemessenen Werten des Positions- oder Weggebers 6 wird ein Regelsystem bzw. ein Regelkreis aufgebaut.The work rolls 1a and 1b are also held in bending blocks 4a and 4b vertically displaceable to the nip 7. The bending blocks 4a, 4b are attached to the (not shown) roll stand of the rolling stand. In the bending blocks 4a, 4b, the bending cylinders 5a, 5b are arranged. In each bending cylinder 5a, 5b, a position or displacement sensor 6 is installed for the roll gap reference measurement and integrated into the bending cylinder 5a, 5b. The drawn position or displacement sensor 6 is designed as a magnetostrictive encoder ( Fig. 1 and 2 ). From the measured values of the position or displacement sensor 6, a control system or a control loop is constructed.

Die gemessenen Regelwerte bewirken eine exakte Einstellung des Walzspaltes 7, um ein optimales Ein- oder Ausfädeln in den geschlossenen Walzspalt 7 und zum optimalen Walzen von Metallbändern (aus Stahl oder NE-Werkstoffen) mit angestrebter Planheit und dem geforderten Profil zu erzielen.The measured control values bring about an exact adjustment of the roll gap 7, in order to achieve optimum threading or unthreading into the closed roll gap 7 and for optimum rolling of metal strips (made of steel or non-ferrous materials) with desired flatness and the required profile.

Der magnetostriktive Positions- oder Weggeber 6 ist in Fig. 2 vergrößert dargestellt. Der Positions- oder Weggeber 6 durchdringt eine Zylinderbuchse 8, an deren Stirnseite 8a ein Magnet 9 für die Geberstange 10 des magnetostriktiven Wandlers 6a in einem zentrischen Hohlraum 11a des Kolbens 11 angeordnet ist. Die den Kolben 11 tragende Kolbenstange 11b weist eine axiale Mittelbohrung 12 auf, in der die Geberstange 10 angeordnet ist. Die Mittelbohrung 12 endet an einer Entlüftungsbohrung 13 mit einer Verschlussschraube 14.The magnetostrictive position or displacement sensor 6 is in Fig. 2 shown enlarged. The position or displacement sensor 6 penetrates a cylinder bushing 8, on the end face 8a of which a magnet 9 for the encoder rod 10 of the magnetostrictive transducer 6a is arranged in a centric cavity 11a of the piston 11. The piston 11 carrying the piston 11b has an axial central bore 12, in which the encoder rod 10 is arranged. The central bore 12 terminates at a vent hole 13 with a locking screw 14.

Gemäß Fig. 3 ist jeweils in einem Zylinderblock 15 ein Führungsrohr 16 nahe dem Walzspalt 7 angeordnet. In dem Biegeblock 4a ist das Führungsrohr 16 gegenüberliegend in dem Biegeblock 4b mittels einer Führungsbuchse 17 geführt und der Positions- oder Weggeber 6 ist mittels einer Führungsstange 18 geführt bzw. gelagert.According to Fig. 3 is in each case a cylinder block 15, a guide tube 16 is arranged near the nip 7. In the bending block 4a, the guide tube 16 guided in the bending block 4b opposite by means of a guide bush 17 and the position or displacement sensor 6 is guided or mounted by means of a guide rod 18.

In dem Diagramm der Fig. 4 ist der Zusammenhang zwischen der Schräglage des Walzspaltes 7 (gemessen an verschiedenen Stellen) und dem seitlichen Verlaufen des Walzbandes (aus Stahl oder weicheren NE-Werkstoffen) dargestellt. Das Bestimmtheitsmaß R2 der linearen Regression bedeutet nahe "1" einen günstigen Wert und ist als Regelgröße vorteilhaft. In dem unteren Bereich ist R2 kleiner als in dem oberen Bereich und ist als Regelgröße weniger geeignet. Aus diesen Zusammenhängen folgt, dass eine Regelung der Schräglage des Walzbandes durch messen an den Biegeblöcken 4a, 4b den unerwünschten seitlichen Bandverlauf erheblich minimieren kann.In the diagram of Fig. 4 the relationship between the slant of the roll gap 7 (measured at different locations) and the lateral running of the rolled strip (made of steel or softer non-ferrous materials) is shown. The coefficient of determination R 2 of the linear regression means close to "1" a favorable value and is advantageous as a controlled variable. In the lower region, R 2 is smaller than in the upper region and is less suitable as a controlled variable. From these contexts follows that a regulation of the inclination of the rolled strip by measuring at the bending blocks 4a, 4b can significantly minimize the unwanted lateral band course.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1a1a
ArbeitswalzeStripper
1b1b
ArbeitswalzeStripper
2a2a
Stützwalzesupporting roll
2b2 B
Stützwalzesupporting roll
3a3a
Arbeitswalzen-EinbaustückWork roll chock
3b3b
Arbeitswalzen-EinbaustückWork roll chock
4a4a
Biegeblockbending block
4b4b
Biegeblockbending block
5a5a
Biegezylinderbending cylinders
5b5b
Biegezylinderbending cylinders
66
Positions- oder WeggeberPosition or displacement encoder
6a6a
magnetostriktiver Wandlermagnetostrictive transducer
77
Walzspaltnip
88th
Zylinderbuchsecylinder liner
8a8a
Stirnseitefront
99
Magnetmagnet
1010
GeberstangeEcholot
1111
Kolbenpiston
11a11a
zentrischer Hohlraumcentric cavity
11b11b
Kolbenstangepiston rod
1212
axiale Mittelbohrungaxial center hole
1313
Entlüftungsbohrungvent hole
1414
Verschlusschraubeplug screw
1515
Zylinderblockcylinder block
1616
Führungsrohrguide tube
1717
Führungsbuchseguide bush
1818
Führungsstangeguide rod

Claims (5)

  1. Device for measuring a rolling gap (7) between working rolls (1a; 1b) of a cold or hot roll stand for the rolling out of narrow or wide metal strips, particularly non-ferrous metal strips, by means of at least one position or travel sensor (6) for indirect rolling gap reference measurement;
    wherein the working rolls (1a, 1b) are mounted in bending blocks (4a, 4b) to be displaceable perpendicularly to the rolling gap (7);
    wherein working roll chocks (3a, 3b) are guided housings of the roll stand;
    wherein a stationary cylinder block (15) and movable components serve for reception of a piston-cylinder unit; and
    wherein the rolling gap reference values measured by the position or travel transmitter can be applied to a regulating system for regulating the rolling gap by way of a hydraulic roll adjustment and/or by way of bending the working rolls;
    characterised in that
    the position or travel transmitter (6) is constructed in the form of a measuring probe, an electrohydraulic transducer or a magnetostrictive transducer;
    the position or travel transmitter (6) is installed between the bending blocks (4a, 4b) or the working roll chocks (3a, 3b) or between a stationary cylinder block (15) and a movable component for indirect rolling gap reference measurements; and
    a regulation of the inclined position, which is measured at the bending blocks, of the rolling strip is provided by way of an adjustment of the piston-cylinder units influencing the rolling gap and/or by way of setting different bending forces in the piston-cylinder units influencing the rolling gap.
  2. Device according to claim 1, characterised in that the position or travel transmitter (6) penetrates a cylinder bush (8), at the end face (8a) of which is arranged a magnet (9) for the transmitter rod (10) of the magnetostrictive transducer (6a) in a central cavity (11a) of the piston (11) for the bending cylinder (5) and that the transmitter rod (10) penetrates the piston rod (11b) of the bending cylinder (5) and extends in an axial central bore (12) of the piston rod (11b), which ends at a ventilation bore (13).
  3. Device according to claim 2, characterised in that the position or travel transmitter (6), which is fixedly arranged in a bending block (4a; 4b), is adjustable in a guide tube (16) in a cylinder block (15) for the bending cylinder (5a; 5b).
  4. Device according to claim 3, characterised in that the guide tube (16) is fixedly arranged in the bending block (4a; 4b) and is slidably guided in the opposite bending block (4a; 4b).
  5. Device according to claim 4, characterised in that the guide tube (16) is slidably mounted in a guide bush (17) in an opposite bending block (4a; 4b).
EP02787736A 2001-12-12 2002-11-20 Device for measuring the roll gap between the working rollers of a cold or warm rolling stand Revoked EP1453620B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10161094 2001-12-12
DE10161094 2001-12-12
DE10202526 2002-01-24
DE10202526.6A DE10202526B4 (en) 2001-12-12 2002-01-24 Device for measuring the roll gap between work rolls of a cold or hot rolling stand
PCT/EP2002/012976 WO2003053604A1 (en) 2001-12-12 2002-11-20 Device for measuring the roll gap between the working rollers of a cold or warm rolling stand

Publications (2)

Publication Number Publication Date
EP1453620A1 EP1453620A1 (en) 2004-09-08
EP1453620B1 true EP1453620B1 (en) 2011-02-02

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Application Number Title Priority Date Filing Date
EP02787736A Revoked EP1453620B1 (en) 2001-12-12 2002-11-20 Device for measuring the roll gap between the working rollers of a cold or warm rolling stand

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US (1) US7174758B2 (en)
EP (1) EP1453620B1 (en)
JP (1) JP4886966B2 (en)
CN (1) CN1313220C (en)
AT (1) ATE497414T1 (en)
AU (1) AU2002352062A1 (en)
BR (1) BR0214472B1 (en)
CA (1) CA2469077C (en)
DE (1) DE50214899D1 (en)
ES (1) ES2359805T3 (en)
RU (1) RU2296020C2 (en)
TW (1) TWI271226B (en)
UA (1) UA90649C2 (en)
WO (1) WO2003053604A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102006024101A1 (en) * 2006-05-23 2007-11-29 Sms Demag Ag Roll stand and method for rolling a rolled strip
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ATE497414T1 (en) 2011-02-15
WO2003053604A1 (en) 2003-07-03
CA2469077A1 (en) 2003-07-03
DE50214899D1 (en) 2011-03-17
RU2296020C2 (en) 2007-03-27
JP2005512815A (en) 2005-05-12
CA2469077C (en) 2011-02-01
US20050066698A1 (en) 2005-03-31
BR0214472A (en) 2004-09-14
RU2004121181A (en) 2005-06-10
CN1604825A (en) 2005-04-06
ES2359805T3 (en) 2011-05-27
BR0214472B1 (en) 2010-09-21
TWI271226B (en) 2007-01-21
CN1313220C (en) 2007-05-02
JP4886966B2 (en) 2012-02-29
TW200301714A (en) 2003-07-16
EP1453620A1 (en) 2004-09-08
UA90649C2 (en) 2010-05-25
AU2002352062A1 (en) 2003-07-09
US7174758B2 (en) 2007-02-13

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