EP2758190B1 - Installation et procédé de laminage - Google Patents

Installation et procédé de laminage Download PDF

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Publication number
EP2758190B1
EP2758190B1 EP12791075.0A EP12791075A EP2758190B1 EP 2758190 B1 EP2758190 B1 EP 2758190B1 EP 12791075 A EP12791075 A EP 12791075A EP 2758190 B1 EP2758190 B1 EP 2758190B1
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EP
European Patent Office
Prior art keywords
roll
rolling
stand
rolling mill
pass
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.)
Active
Application number
EP12791075.0A
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German (de)
English (en)
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EP2758190A2 (fr
Inventor
Mark Haverkamp
Norbert Theelen
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 Group GmbH
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SMS Group GmbH
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Filing date
Publication date
Application filed by SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP2758190A2 publication Critical patent/EP2758190A2/fr
Application granted granted Critical
Publication of EP2758190B1 publication Critical patent/EP2758190B1/fr
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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
    • 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

Definitions

  • the invention relates to a multi-stand rolling mill comprising at least two rollers mounted in a roll stand for receiving rolling forces in a roll bearing, means for displacing at least one roll with respect to the rolling stand and means for determining the rolling caliber, the determining means having a caliber reference and a Have room reference and means for measuring the relative position between the caliber reference and the room reference.
  • Such rolling plants are known per se, wherein the means for determining the rolling caliber in Anstellzylindern, with which the rollers can be employed, are arranged and determine the respective rolling caliber on the cylinder position or on the position of the corresponding piston.
  • the determination is made regularly via a room reference, which by definition is assumed to be spatially fixed, and via a caliber reference whose position serves as a measure of the position of the corresponding roller and thus as a measure of the rolling caliber.
  • the preambles of claims 1 and 4 are based on this internal prior art.
  • the DE 10 2007 048 686 A1 and the US 3,906,767 show similar Walzanalgen where the roll gap can be controlled.
  • a generic rolling mill can be characterized in that the caliber reference and / or the space reference are arranged with respect to a force flow occurring between roller and roll stand peripheral to the power flow.
  • the caliber reference and / or the space reference are arranged with respect to a force flow occurring between roller and roll stand peripheral to the power flow.
  • the space reference is advantageous for the space reference to be arranged outside a force introduction region in which the rolling forces are introduced into the rolling stand. This makes it possible to minimize the influence of stresses which are caused by the rolling forces. In addition, it has been found that this also maintenance problems can be minimized, as appropriate areas are often easier to access.
  • the space reference is located outside the force introduction area of the roll being measured.
  • each room reference is arranged outside a force introduction area in which rolling forces are introduced into the rolling stand. In this way, a space reference that is as fixed as possible can be provided, so that the corresponding measurement results are not or only minimally impaired.
  • the space reference, and preferably each space reference of at least one rolling stand be arranged on the rolling stand in the vicinity of a neutral area of the rolling stand between two force introduction areas in which rolling forces are introduced into the rolling stand. This also minimizes the influence of rolling stresses or forces. In addition, this results in less maintenance problems.
  • the term "in the vicinity” as used herein means that the space reference is located at twice the minimum thickness of the rolling stand or less or at least twice the minimum radial thickness or less from a neutral area.
  • a neutral area is subject to relatively little tension, so that the corresponding change in the stresses caused by rolling forces can exert less influence.
  • the "thickness of the roll stand” as defined in the present context the thickness of the roll stand parallel to the pass line or in the direction of the pass line of the rolling mill, while the "radial thickness” defined as the thickness of the roll stand radially or perpendicular to the pass line. Both sizes represent, in particular in their minimum value, a relatively reliable and practically comprehensible measure of the important dimensions of the force distribution present in the respective rolling stand.
  • a caliber reference arranged peripherally of the force flow can be realized in a particularly simple and reliable manner if the caliber reference is arranged on a rolling force-free projection.
  • the supernatant then follows without itself any tensions or moments to subject, the corresponding movement of the body on which the rolling force-free projection is arranged. It is advantageous, this rolling force-free supernatant as close as possible in the vicinity of the roller, for example on a rocker supporting the roller via a bearing or on a non-rotating assembly of the bearing itself.
  • the caliber reference can be arranged less than a bearing diameter of the roller bearing away from the roller bearing. This ensures that the caliber reference is arranged as close as possible to the roller itself.
  • a possible dense arrangement of the caliber reference on the roller can be realized if at least one of the rollers is mounted in a bearing body and the caliber reference is arranged on the bearing body. This also results in fewer measurement errors due to rolling stresses or forces, so that the correspondingly accurate statements about the rolling caliber are possible.
  • the bearing body has a rocker with a serving as a bearing body bearing side on which a displacement means for displacing the respective roller, such as the piston or the cylinder of a piston-cylinder unit acts, and with a guide side, wherein the caliber reference to the the guide side facing away from the bearing side is provided.
  • a displacement means for displacing the respective roller such as the piston or the cylinder of a piston-cylinder unit acts
  • a guide side wherein the caliber reference to the the guide side facing away from the bearing side is provided.
  • the measuring means may comprise a distance meter which measures the distance between caliber reference and room reference. In this way it can be concluded simply and reliably from the distance between caliber reference and space reference to the rolling caliber, since this requires only corresponding geometric conversions per se.
  • a calibration step may be performed prior to rolling in which the changes in the measurement result of the measuring means are recorded in a calibrating manner as a function of the roll position.
  • the distance meter is designed to be tactile or touching, so that it provides cost-effective and precise measurement results in particular even in the presence of dust and steam.
  • a generic rolling mill can be characterized in that the space reference is arranged separately from the mill stand. This ensures in any case that the space reference is independent of rolling stresses or forces, with possibly maintenance problems due to a more difficult accessibility and because of attaching the measuring means to the room reference or on the caliber reference must be taken into account if the rolling stand or only the caliber reference and the assembly bearing the caliber reference should be removed for maintenance or retooling and returned to the rolling mill. On the other hand, the most accurate statement about the rolling caliber can be ensured in this way.
  • the determining means or the measuring means can be calibrated. This then makes it possible to predict the reaction of the respective roller when the rollers are acted upon by the displacement means in accordance with the measurement results of the measuring means or determination means.
  • the rolling mill has a control circuit for controlling the rolling caliber, which comprises the determining means, and input means of measurement results of the calibration as a reference variable of the control loop, as a correction variable for the control variable of the control loop and / or as a correction variable for the determining means or the displacement means.
  • the measurement results resulting from the calibration by means of the offline calibration means can be introduced into the control loop.
  • these measurement results can only serve to correct the measurement results of the determination means or measuring means.
  • a correction of the manipulated variable or a correction of the action on the displacement means or on their own control loop can take place.
  • offline currently refers to work, activities or facilities that are only used when rolling is not carried out in the rolling mill.
  • the off-line calibration takes place inline, that is, when the respective rolls or associated rolling stands are arranged in the rolling line. Accordingly, it is also advantageous if the offline calibration can be arranged directly on the rolling mill or can be arranged to measure the rollers inline can.
  • the position of the rollers is measured directly for offline calibration in order to be able to calibrate the measuring means or determination means as precisely as possible in this way.
  • the setting of the rollers can be carried out within a control loop to take into account measurement results of the determination means, so that the rollers are each made as optimal as possible.
  • the control loop can also use measurement results from the rolling mill downstream workpiece measurements, such as pipe wall thickness measurements or cross-sectional measurements, as a controlled variable.
  • rolling stand means any structural unit that applies and compensates for the forces involved in rolling and rolling.
  • a rolling mill can be provided and designed as a frame and structurally movable unit for fast changing operations, but this is not absolutely necessary. Rather, the rolling mill can also be relatively rigidly connected to the rest of the rolling mill, so that change operations such as replacement of rollers or other wearing parts require major assembly activities.
  • the rolling mill 1 shown schematically comprises a multiplicity of roll stands 20, each with rollers 30 mounted on the roll stands 20.
  • the rolling stands 20 are aligned along a pass line 2, so that a work piece can be fed from an input side 12 along the pass line 2 to an exit side 13 can go through.
  • the respective space between the rollers 30 is referred to as a rolling caliber and is therefore a measure of the extent to which the rollers 30 act on the respective workpiece.
  • rollers 30 of the in FIG. 1 Concretely illustrated embodiment are mounted in rocker arms 45 as a bearing body 70, wherein the bearing body 70 is formed in a bearing side 46 of the rockers 45.
  • the rockers 45 also have a guide side 47, which ultimately defines the possibilities of movement of the rocker 45 by this leads the respective rocker 45.
  • the bearing side 46 and the bearing body 70 carries a roller bearing 35 which supports the roller 30 in each case.
  • a rolling force-free projection 75 is arranged, which can be used as caliber reference 54, as explained in more detail below with reference to the further embodiments.
  • this no-rolling projection 75 and thus the caliber reference 54 is arranged less than the bearing diameter of the roller bearing 35 of the roller bearing 35. It is also immediately apparent that the caliber reference 54 or the no-rolling projection 75 is arranged with respect to a force flow occurring between the respective roller 30 and the roll stand 20, peripheral to the force flow.
  • rollers 30 are arranged on the roll stand 20 and stored in each case adjustable via swing, the employment is carried out by the piston-cylinder units 42, which are supported on the one hand on the rockers 45 and on the other hand on the roll stand 20 and in turn take up the rolling forces as well as the caliber employment serve.
  • each force introduction areas 24, in which the supporting force and thus the rolling force is fed into the rolling mill 20 are supported on the roll stand 20.
  • Each of the rockers 45 has a non-rolling projection 75, as already described in relation to FIG. 1 was explained.
  • each distance meter 60 are arranged, which are supported on a support ring 78, which forms a space reference support 77.
  • a caliber reference 54 is arranged on each roller force-free projection 75 and a space reference 56 is arranged on the space reference carrier 77, which together with measuring devices 58 represented by the distance meters 60 form means 50 for determining the rolling caliber.
  • the support ring 78 and the space reference support 77 is fixed independently of the roll stand 20, so that the room references 56 are arranged separately from the roll stand 20.
  • FIG. 3 illustrated embodiment corresponds in essential parts of the embodiments according to FIGS. 1 and 2 , so that a renewed description of all details is omitted.
  • the carrier ring 78 attached to the rolling stand 20 but this is done in neutral areas 25, which are each to be found between two force introduction areas 24. In this way, voltages which could be routed into the space reference carrier 77 and which could lead to a displacement of the room references 56 can be reduced to a minimum.
  • even a movable and thus displacements compensating attachment of the carrier ring 78 may be provided on the rolling mill 20.
  • the space reference 46 is also arranged outside of a force introduction region, in which the rolling forces are introduced into the rolling stand 20, even in this arrangement.
  • FIG. 4 The arrangement shown corresponds essentially to the arrangement according to FIG. 3 , but here was dispensed with a support ring 78 as a space reference support 77. Rather, individual support arms 79 are arranged in neutral areas 25 of the roll stand 20, which serve as space reference support 77. Already such an arrangement leads to the fact that the room references 56 are arranged outside the force introduction areas 24 and thus peripherally the power flow.
  • FIG. 5 illustrated embodiments are located on the rolling stand 20 approaches that are attached to neutral areas 25 and projecting into the interior of the rolling stand 20, as support arms 79.
  • the support arms 79 may also be integrally formed with the rolling mill 20.
  • the rolling stand 20 is after FIG. 5 only around a 2-roll stand, while the arrangements after FIGS. 2 to 4 each 3-roll stands are. It is understood that in different embodiments, also rolling stands 20 with 4 and more rollers can be used accordingly. Incidentally, this differs in FIG. 5 illustrated embodiment not further from the embodiment according to FIG. 4 so that repetitions are omitted to explain equivalent components.
  • FIG. 6 The arrangement shown corresponds essentially to the arrangement according to FIG. 5 , wherein as displacement means 40 in the in FIG. 6 illustrated eccentric bushings 41 and as caliber reference 54 surface areas of the eccentric bushes 41, which are coaxial with the axis of the roller to be used, are used.
  • the eccentric bushes 41 are arranged on scaffold arms 21, which in turn are fixedly secured to the rolling stand 20, and accordingly, in the region of this fastening, force introduction areas 24 can be found in the rolling stand 20.
  • the framework arms 21 may also be formed integrally with the rolling stand.
  • the space reference support 77 and the support arms 79 are arranged independently of the roll stand 20, as this also with reference to the in FIG. 2 has already been explained by way of example, so that the room references 56 remain unaffected by any rolling forces.
  • a distance meter 60 for example, the arrangement according to FIG. 8 in which a measuring tip 61 with a measuring contour 62 adapted to the movement of the references 54, 56, a measuring foot 63 opposite this measuring contour 62 or the measuring tip 61 and a distance between the measuring tip 61 and the measuring foot 63 holding spring 64 is provided and in which in particular the measuring electronics spatially removed and therefore outside a range of high temperature and / or high mechanical stress, as this is to be found in the rolling usually in the vicinity of the roller, can be arranged.
  • the distance meter 60 after FIG. 8 a waveguide 65, which can interactively measure with a magnet 66 the respective distance between measuring tip 61 and measuring foot 63, wherein the actual evaluation of the measurement result determined via the waveguide 65 can then take place far outside.
  • the distance meter 60 is attached, for example, with its measuring foot 63 either to the caliber reference 54 or to the room reference 56, so that the measuring tip 61 is in each case mounted on the associated counterpart of this caliber reference 54 or the room reference 56.
  • LIST OF REFERENCE NUMBERS 1 rolling plant 50 Determination means (numbered as an example) 2 pass line 12 input side 54 Caliber reference (numbered as an example) 13 output side 20 rolling mill 56 Room reference (numbered as an example) 21 Scaffolding arm (numbered as an example) 24 Force introduction area (shown as an example) 58 Measuring equipment (numbered as an example) 60 Distance meter (numbered as an example) 25 neutral area (shown as an example) 61 Probe 30 roller 62 the movement of the references 54, 56 adapted measuring contour 35 roller bearings 40 Transfer agent (numbered as an example) 63 measuring foot 64 Distance-keeping spring 41 eccentric 65 Waveguide for measurement 42 Piston-cylinder unit (numbered as an example) 66 magnet 70 bearing body 45 Swingarm (numbered as an example) 75 rolling force-free supern

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Claims (8)

  1. Installation de laminage à cages multiples (1), comprenant au moins deux rouleaux s'appuyant dans une cage de laminoir (20) destinée à absorber des forces de laminage dans un palier de rouleau (35), des moyens (40) de déplacement d'au moins un rouleau (30) par rapport à la cage de laminoir (20) et des moyens (70) de définition du calibre de laminage, les moyens de définition (50) présentant par rouleau (30) une référence de calibrage (54) et une référence d'espace (56), de même que des moyens (58) pour mesurer la position relative entre la référence de calibrage (54) et la référence d'espace (56), caractérisée en ce que la référence d'espace (56), par rapport à un flux de force se produisant entre le rouleau (30) et la cage de laminoir (20) en périphérie du flux de force et à proximité d'une zone neutre (25) de la cage de laminoir (20) entre deux zones d'introduction de force (24) dans lesquelles des forces de laminage sont conduites dans la cage de laminoir (20), est disposée au niveau de la cage de laminoir (20), des modifications de la tension dues à des forces de laminage exerçant moins d'influence sur la zone neutre (25) .
  2. Installation de laminage selon la revendication 1, caractérisée en ce que chaque référence d'espace (56) est disposée à l'extérieur d'une zone d'introduction de force dans lequel des forces de laminage sont conduites dans la cage de laminoir (20).
  3. Installation de laminage selon une des revendications précédentes, caractérisée en ce que la référence de calibrage (54) est disposée au niveau d'un porte-à-faux (75) exempt de force de laminage.
  4. Installation de laminage à cages multiples (1), comportant au moins deux rouleaux (30) s'appuyant dans une cage de laminoir (20) destinée à absorber des forces de laminage dans un palier de rouleau (35), des moyens (20) de déplacement d'au moins un rouleau (30) par rapport à la cage de laminoir (20) et des moyens (50) de définition du calibre de laminage, les moyens de définition (50) présentant par rouleau (30) une référence de calibrage (54) et une référence d'espace (56), de même que des moyens (58) de mesure de la position relative entre la référence de calibrage (54) et la référence d'espace (56), caractérisée en ce que la référence d'espace (56) est disposée séparément de la cage de laminoir (20).
  5. Installation de laminage selon une des revendications précédentes, caractérisée par des moyens de calibrage hors-ligne qui permettent une mesure du calibre de laminage directement au niveau d'au moins un rouleau.
  6. Installation de laminage selon la revendication 5, caractérisée par un circuit de réglage pour le réglage des calibres de laminage et qui englobe les moyens de définition (50), et des moyens de saisie des résultats de mesures des moyens de calibrage faisant office de valeurs de guidage du circuit de réglages, de valeurs de correction pour la valeur de réglage du circuit de réglages et/ou de valeurs de correction pour les moyens de définition (50) ou les moyens de déplacement (40) .
  7. Installation de laminage à cages multiples (1) selon une des revendications précédentes, caractérisée en ce que la référence de calibrage (54) est disposée à une distance représentant moins d'un diamètre du palier de rouleau (35) par rapport au palier de rouleau (35).
  8. Installation de laminage selon la revendication 1, caractérisée en ce que les moyens de mesure (58) comprennent un mesureur de distance (60) qui mesure la distance entre la référence de calibrage (54) et la référence d'espace (56).
EP12791075.0A 2011-09-23 2012-09-24 Installation et procédé de laminage Active EP2758190B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011114143 2011-09-23
PCT/DE2012/000938 WO2013041084A2 (fr) 2011-09-23 2012-09-24 Installation et procédé de laminage

Publications (2)

Publication Number Publication Date
EP2758190A2 EP2758190A2 (fr) 2014-07-30
EP2758190B1 true EP2758190B1 (fr) 2018-09-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12791075.0A Active EP2758190B1 (fr) 2011-09-23 2012-09-24 Installation et procédé de laminage

Country Status (4)

Country Link
US (2) US9764368B2 (fr)
EP (1) EP2758190B1 (fr)
DE (1) DE112012003956B4 (fr)
WO (1) WO2013041084A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020206533A1 (de) 2020-05-26 2021-12-02 Kocks Technik Gmbh & Co Kg Walzgerüst mit individueller Verformungskompensation

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2224833C3 (de) 1972-05-20 1981-05-21 Vereinigte Flugtechnische Werke Gmbh, 2800 Bremen Vorrichtung zur Messung des Spaltes eines Arbeitswalzenpaares für ein Walzgerüst
US3906767A (en) * 1974-05-31 1975-09-23 Mitsubishi Heavy Ind Ltd Hydraulic roll-gap control system
DE2646328A1 (de) 1976-10-14 1978-04-20 Krupp Gmbh Beruehrungslose lagevermessung stillstehender bzw. bewegter rotierender koerper
DE19500336A1 (de) * 1995-01-07 1996-07-11 Schloemann Siemag Ag Verfahren zur Regelung des Walzspaltprofils
DE50214899D1 (de) * 2001-12-12 2011-03-17 Sms Siemag Ag Einrichtung zur messung des walzspaltes zwischen arbeitswalzen eines kalt- oder warmwalzgerüstes
DE10202526B4 (de) 2001-12-12 2022-02-03 Sms Group Gmbh Einrichtung zur Messung des Walzspaltes zwischen Arbeitswalzen eines Kalt- oder Warmwalzgerüstes
DE102007048686A1 (de) 2007-10-10 2009-04-16 Sms Demag Ag Positionsgeber zur Anstellhubwegmessung eines Kolben-Zylinder-Systems
DE102008037756A1 (de) 2008-08-14 2010-02-18 Sms Siemag Aktiengesellschaft Positionsgeber für hydraulische Anstellsysteme in einem Walzgerüst

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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Also Published As

Publication number Publication date
US20170312799A1 (en) 2017-11-02
WO2013041084A3 (fr) 2014-01-23
WO2013041084A2 (fr) 2013-03-28
DE112012003956B4 (de) 2024-03-07
US10654084B2 (en) 2020-05-19
DE112012003956A5 (de) 2014-06-18
US9764368B2 (en) 2017-09-19
US20140230509A1 (en) 2014-08-21
EP2758190A2 (fr) 2014-07-30

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