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WO2008068172A1 - Mesure de l'interstice entre cylindres dans une cage à plusieurs cylindres - Google Patents

Mesure de l'interstice entre cylindres dans une cage à plusieurs cylindres Download PDF

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Publication number
WO2008068172A1
WO2008068172A1 PCT/EP2007/062925 EP2007062925W WO2008068172A1 WO 2008068172 A1 WO2008068172 A1 WO 2008068172A1 EP 2007062925 W EP2007062925 W EP 2007062925W WO 2008068172 A1 WO2008068172 A1 WO 2008068172A1
Authority
WO
WIPO (PCT)
Prior art keywords
roll
height
cluster
distance
stand
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.)
Ceased
Application number
PCT/EP2007/062925
Other languages
German (de)
English (en)
Inventor
Berthold Botta
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO2008068172A1 publication Critical patent/WO2008068172A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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

Definitions

  • the invention relates to a method for a direct nip measurement in a cluster mill stand or a multi-roll mill stand. Furthermore, the invention relates to a Dahlwalzengerüst, in particular a Reduziergerüst, for a cold rolling mill.
  • Cold rolling is a forming of a metal strip, in particular a wide-flat metal strip, below its recrystallization temperature.
  • a metal strip in particular a wide-flat metal strip, below its recrystallization temperature.
  • work rolls are required in a rolling mill with a small diameter. As a result, a smaller force is required for the same thickness reduction of the metal strip, which improves the quality of the metal strip.
  • the reduction in the work roll size also involves a reduction in operating costs. Although smaller work rolls wear faster, they are easier to handle, cheaper to replace and, above all, faster to rework, with lower tolerances.
  • An essential objective of cold rolling mills is to achieve the highest possible strip quality.
  • One of the most important criteria for strip quality is the achievable thickness tolerance.
  • This task is performed by a belt thickness control with its subordinate control loops of an adjustment control, which regulates a position of the two work rolls to each other.
  • Such a rolling stand is in particular a so-called multi-roll stand, in which a multiplicity of rolls (eight or more, in particular 12, 18 or 20 rolls) of different sizes are arranged symmetrically in two wedges (roll packs). Here are the two work rolls the tips of the wedges there, which are each directed perpendicular to the metal strip.
  • Such multi-roll stands are capable of achieving high strip thickness reduction values and / or maintaining very accurate strip tolerances. For this reason, they are also often used as Reduziergerüste.
  • 20-roll stands with roll packages of 10 rolls each have prevailed. These are very well suited to meet the demand for high degrees of deformation, tight tolerances and good surface quality.
  • the nip sensors are arranged between the roll necks of the duo mill stand.
  • the problem with such an arrangement is in particular their susceptibility to damage if in the rolling stand an unforeseen event such. B. a crack of the metal strip takes place.
  • the duo mill stand need to be opened to remove the tape remnants, but it may also be necessary to replace the position sensors for the nip measurement and to adjust a closed loop control loop. This is time consuming and increases production costs significantly.
  • a so-called indirect roll gap measurement is state of the art, in which displacement encoders are mounted on hydraulic setting cylinders of the rolling stand on the drive and operating side in order to determine the position of the pistons relative to the setting cylinder.
  • the position measurement values are related to the rolling gap of the rolling stand after a calibration process.
  • the position measured value is compared with a required setpoint value and the deviation as a control deviation is applied to a controller which, in addition to the additive correction signals from different compensation circuits, generates an actuating signal for the hydraulic adjustment of the rolls of the rolling mill stand.
  • the indirect roll gap control which consists essentially of the position control and compensation circuits, such. B. for consideration of Walzenexzentriztician exists, has the disadvantage that no direct detection of the roll gap is given. It can thus be certain factors influencing the multi-roll stand, z.
  • the object of the invention is achieved by a direct measurement of a distance position between a framework upper and a framework lower part, wherein the distance is a measure of a height of a roll gap of a cluster roll stand.
  • a position measuring transducer is mounted directly between the upper and lower part of the framework, whereby a method for direct nip measurement in the multi-roll stand can be realized.
  • the position measuring device for the roll gap measurement is not located on an adjusting device for the two frame parts. Ie. in a distance measurement of the two frame parts to each other, fall off those disturbances, which in a measurement of a piston position, such as. As a compressibility of an oil column and a rolling force-dependent structure elongation occur.
  • Roll stand makes it possible to make the work rolls very small in diameter, so that a minimum end thickness tolerance is possible even with wide tapes by a high deformation at low stitch counts.Furthermore, this smaller roll grinding machines are applicable, which can reduce the overall investment and maintenance costs results in a compact design of the mill stand, an economical use of carbide rollers, a quick and easy roll change, and a high discharge rate with reduced edge cracks.
  • the position transducer determines a distance between the framework top and the framework bottom.
  • a position or a distance of a fixed point on the upper frame part is preferably determined with respect to a fixed point on the lower frame part.
  • These fixed points can z. B. in an inlet region and / or an outlet region of the cluster roll stand on the scaffold upper or framework lower part may be provided.
  • contact points of a respective roll package are available on the upper or lower frame part.
  • suitable for this purpose is a respective vertex of a respective cavity of a framework part.
  • such fixed points to the relevant cavities which serve for a determination / definition of a respective roll packet thickness, wherein the roll pack thicknesses together with the distance of the two fixed points to each other, form a measure of the roll gap of the cluster roll stand.
  • a respective other end for the determination / definition of the respective roll packet thickness is preferably a rolling point of the corresponding roll stack of the cluster roll stand, ie a point from which the roll gap or the height of the roll gap is defined. Ie.
  • the measured distance between the two fixed points that is to say, for example, the distance between the two contact points of the respective roll package at the respective cavity
  • minus the respective roll package thickness results in a height of the roll gap or a measure of this in a preferred embodiment of the invention.
  • the respective rolling point of the respective roll package is z. B. defined by the fact that at the respective rolling point of the outer circumference of the respective work roll has a Tangentialge speed, which corresponds to the speed of the metal strip in the production direction behind the cluster mill stand.
  • the height of the roll gap is at a distance of two least spaced apart from each other
  • 1 is a schematic diagram of the prior art for explaining a direct roll gap measurement in a duo-rolling mill
  • 2 is a schematic diagram of a roll gap measurement according to the invention in a 20-roll rolling stand
  • 3 shows a side view of a 12-roll rolling stand for
  • the through or the roll gap transducer 400 measured distance S between the two roll pins 114, 214 of the two working rollers 110, 210 by hi (height of the roll gap), X ⁇ (smallest distance of the upper roller point 112 to the rolling pin 114) and X B ( smallest distance of the lower rolling point 212 to the roll neck 214).
  • the geometrical dimensions d w , d WB , d z , d ZB of the work rolls 110, 210 are constant in the first approximation, as long as the work rolls 110, 210 are installed in the duo rolling mill, that is roller-dependent. It follows that hi is proportional to S. Ie. S is a direct measure of the height hi of the roll gap 300. This so determined Walzspaltistwert hi is compared with a roll gap setpoint and the deviation is applied as a control deviation to a controller that generates a Stelligsig- signal for a hydraulic adjustment of the two work rolls 110, 210.
  • the method according to the invention for direct roll gap measurement will now be explained in more detail with reference to FIG. 2 on the basis of a multi-roll stand 1, which in the present exemplary embodiment is designed as a 20-roll rolling stand 1.
  • the invention should furthermore preferably relate to a multi-roll stand 1, in which a framework upper part 10 can be moved relative to a framework lower part 20. This is illustrated in FIG 2 on the left of the scaffold shell 10 with the double arrow, d. H. the frame upper part 10 is movable relative to the frame lower part 20.
  • the invention should relate in particular to a cluster mill 1, which is adjustable by means of four columns. Ie. the upper housing part 10 is movable relative to the lower housing part 20 along four columns arranged in the corner regions of the multi-drum stand 1.
  • the distance S of the upper frame part 10 with respect to the lower frame part 20 is detected by means of at least one position encoder 400 for the roll gap measurement.
  • the distance S is determined with respect to two fixed points FP T , FP B on the cluster roll stand 1.
  • a fixed point FP T is provided on the upper frame part 10 and the other fixed point FP B on the lower frame part 20. Where these are located on the multi-roll stand 1, in principle does not matter.
  • the position encoder 400 determines a horizontal distance S between these two fixed points FP T , FP B , which results according to the invention a measure hi for the nip 300. This can be done in different ways.
  • the distance S of the two fixed points FP T , FP B corresponds to a sum of a distance X ⁇ of the fixed point FP T to the upper side O of the rolled metal strip 2 and the height hi of the rolled metal strip 2 (corresponds to the height hi of the roll gap 300) and Distance X B of the underside U of the rolled metal strip 2 to the fixed point FP B.
  • X ⁇ and X B can now again be expressed via framework-dependent constants. In this case (see also FIG. 3 for a better understanding):
  • the height hi of the nip 300 depends on the measured distance S between the upper frame part 10 and the lower frame part 20, a height W PT of the upper roll stack 100, a height W PB of the lower roll stack 200, a height G ⁇ of the cavity 150 of FIG Scaffold shell 10 and a height G B of the cavity 250 of the frame base 20.
  • the heights G of the respective cavity 150, 250 are scaffold-dependent and thus constant.

Landscapes

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

Abstract

L'invention concerne un procédé de mesure directe de l'interstice entre cylindres dans une cage (1) à plusieurs cylindres. La hauteur (h<SUB>1</SUB>) d'un interstice (300) entre cylindres est déterminée en fonction de l'épaisseur (W<SUB>PT</SUB>, W<SUB>PB</SUB>) d'un jeu de cylindres (100, 200) de la cage (1) à plusieurs cylindres. Par rapport à au moins un point de fixation (FP<SUB>T</SUB>, FP<SUB>B</SUB>), l'épaisseur (W<SUB>PT</SUB>, W<SUB>PB</SUB>) du jeu de cylindres est fixée dans une relation à une distance du point de fixation (FP<SUB>T</SUB>, FP<SUB>B</SUB>) par rapport à un plan (O, U) d'un feuillard métallique à laminer (2). Cette relation constitue une mesure de la hauteur (h<SUB>1</SUB>) de l'interstice (300) entre les cylindres. L'invention concerne en outre une cage à plusieurs cylindres, et en particulier une cage réductrice pour laminoir à froid, dans laquelle une sonde de mesure de position qui mesure la hauteur (h<SUB>1</SUB>) d'un interstice (300) entre des cylindres de la cage (1) à plusieurs cylindres est prévue sur une partie supérieure (10) de la cage et/ou sur une partie inférieure (20) de la cage.
PCT/EP2007/062925 2006-12-04 2007-11-28 Mesure de l'interstice entre cylindres dans une cage à plusieurs cylindres Ceased WO2008068172A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006057040.5 2006-12-04
DE200610057040 DE102006057040B3 (de) 2006-12-04 2006-12-04 Walzspaltmessung für ein Vielwalzengerüst

Publications (1)

Publication Number Publication Date
WO2008068172A1 true WO2008068172A1 (fr) 2008-06-12

Family

ID=39111009

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/062925 Ceased WO2008068172A1 (fr) 2006-12-04 2007-11-28 Mesure de l'interstice entre cylindres dans une cage à plusieurs cylindres

Country Status (2)

Country Link
DE (1) DE102006057040B3 (fr)
WO (1) WO2008068172A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113083907A (zh) * 2021-03-29 2021-07-09 广西北港不锈钢有限公司 一种不锈钢板材偏心轧制线计算方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013037350A2 (fr) * 2011-09-14 2013-03-21 Sms Meer Gmbh Train de laminage ainsi que dispositif et procédé de détermination des calibres de laminage ou de guidage des cages de laminoir ou de guidage dans un train de laminage à plusieurs cages
DE102014005332A1 (de) 2014-04-11 2015-10-15 Sms Meer Gmbh Umformmaschine, insbesondere Ringwalzmaschine
EP2937155B1 (fr) 2014-04-11 2021-04-07 SMS group GmbH Machine à laminer des bagues et procédé de commande d'une machine à laminer des bagues

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4203469A1 (de) * 1992-02-04 1993-08-05 Mannesmann Ag Messverfahren und vorrichtung zur erfassung des spaltes eines arbeitswalzenpaares
DE19533584A1 (de) * 1995-08-31 1997-03-06 Mannesmann Ag Meßverfahren und Meßsystem zur Erfassung eines Spaltes eines Walzenpaares

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2724854A1 (de) * 1977-06-02 1978-12-21 Ver Flugtechnische Werke Messvorrichtung zum erfassen des spaltes eines arbeitswalzenpaares
GB9820787D0 (en) * 1998-09-25 1998-11-18 Kvaerner Metals Davy Ltd Roll position control in cluster mills

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4203469A1 (de) * 1992-02-04 1993-08-05 Mannesmann Ag Messverfahren und vorrichtung zur erfassung des spaltes eines arbeitswalzenpaares
DE19533584A1 (de) * 1995-08-31 1997-03-06 Mannesmann Ag Meßverfahren und Meßsystem zur Erfassung eines Spaltes eines Walzenpaares

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113083907A (zh) * 2021-03-29 2021-07-09 广西北港不锈钢有限公司 一种不锈钢板材偏心轧制线计算方法

Also Published As

Publication number Publication date
DE102006057040B3 (de) 2008-05-08

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