EP0286533A1 - Verfahren und Vorrichtung zum Walzen von Metallbändern oder Blechen - Google Patents

Verfahren und Vorrichtung zum Walzen von Metallbändern oder Blechen Download PDF

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Publication number
EP0286533A1
EP0286533A1 EP88400821A EP88400821A EP0286533A1 EP 0286533 A1 EP0286533 A1 EP 0286533A1 EP 88400821 A EP88400821 A EP 88400821A EP 88400821 A EP88400821 A EP 88400821A EP 0286533 A1 EP0286533 A1 EP 0286533A1
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EP
European Patent Office
Prior art keywords
cylinder
support
product
working
cage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88400821A
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English (en)
French (fr)
Other versions
EP0286533B1 (de
Inventor
Paul Matricon
Marc Valence
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.)
KVAERNER CLECIM
Original Assignee
Clecim SAS
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
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Application filed by Clecim SAS filed Critical Clecim SAS
Publication of EP0286533A1 publication Critical patent/EP0286533A1/de
Application granted granted Critical
Publication of EP0286533B1 publication Critical patent/EP0286533B1/de
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • 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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
    • B21B37/36—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by radial displacement of the roll sleeve on a stationary roll beam by means of hydraulic supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2269/00—Roll bending or shifting
    • B21B2269/02—Roll bending; vertical bending of rolls
    • B21B2269/04—Work roll bending
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • B21B27/03—Sleeved rolls
    • B21B27/05—Sleeved rolls with deflectable sleeves
    • B21B27/055—Sleeved rolls with deflectable sleeves with sleeves radially deflectable on a stationary beam by means of hydraulic supports

Definitions

  • rolling mill trains are used, each of which consists of a cage comprising two spaced apart support columns connected by crosspieces and between which is mounted a set of superimposed rollers whose axes are parallel and placed in the same plane.
  • Each cylinder is rotatably mounted around a shaft carried at its two ends by support members housed respectively in the two columns of the cage.
  • Rolling mills of different types can be produced.
  • the so-called "quarto" rolling mills have four rolls, respectively two working rolls between which the rolled product passes and bearing on the side opposite the product, each on a support roll.
  • the “sexto” type rolling mills include intermediate rolls interposed between the support rolls and the working rolls.
  • the cylinders bear on each other along substantially parallel bearing lines and directed along a generator whose profile, normally rectilinear, depends on the applied forces and the resistance of the cylinder.
  • the tightening force is applied by screws or jacks interposed between the cage and the ends of the shaft of the upper support cylinder, the lower support cylinder, or counter-cylinder bearing directly on the cage.
  • the other cylinders must therefore be able to move slightly relative to the cage and they are therefore carried by support members mounted to slide vertically inside the corresponding columns of the cage.
  • each cylinder can bend under the action of the applied forces and this results in a variation in thickness of the passage space of the strip between the working rolls, the edges of the strip thus being able to be thinner than the central part.
  • support cylinders having a slightly domed external profile capable of compensating for the deflection of the cylinder under the action of the clamping force so that the generator contacting the corresponding working cylinder is substantially straight.
  • this profile can only be determined as a function of an average rolling force.
  • cylinders with variable bulging comprising a central shaft on which is threaded a deformable cylindrical casing whose profile can be determined by application of thrust forces between the shaft and the casing to compensate for the deflection of the shaft as a function of the rolling force.
  • the central shaft which is rotatably mounted around its axis, is provided by its periphery with a recess formed towards the outside by the deformable casing, the latter being connected to the shaft sealingly at both ends so as to constitute a closed annular space into which a fluid is introduced under an adjustable pressure.
  • the peripheral wall of the support cylinder is constituted by a tubular envelope rotatably mounted around two bearings on the central shaft, the latter being fixed in rotation and forming a support beam on which bear a plurality of envelope holding pads distributed along a support generatrix, and extending radially between the support beam and the internal face of the envelope with interposition of a lubricating film allowing the rotation of the envelope.
  • Each pad rests on the support beam by means of at least one jack making it possible to individually adjust the radial position of the pad as a function of the profile to be given to the support line in order to correct the defects in thickness and flatness.
  • the strip measured downstream of the rolling mill by known devices. It is thus possible to distribute the corrections over the width of the strip so as to quickly correct localized thickness or flatness defects.
  • Each working cylinder is in fact carried at its ends by bearings housed in chocks slidably mounted in the corresponding columns of the cage, and the relative positioning of which can be adjusted by means of hydraulic jacks exerting thrust forces in opposite directions. on ears attached to each chock. It is thus possible to achieve a so-called "positive" bending by tightening the chocks of the two working rolls, to compensate for an excess thickness of the edges of the product or else a so-called negative bending by spacing the chocks of the two working cylinders to compensate for an excess thickness of the part. central product.
  • the invention therefore applies preferably but not limited to a rolling mill of the quarto type comprising, inside a support cage, four cylinders with parallel axis and superimposed along a clamping plane, rotatably mounted each around a shaft carried at its two ends by support members housed in the columns of the cage, respectively two working cylinders providing between them an elongated space for the passage of the product and bearing each on the opposite side on a cylinder d '' support of which at least one is of the variable crown type comprising a cylindrical envelope rotatably mounted on a central shaft and means for adjusting the profile of the envelope by applying thrust forces between the central shaft and the wall internal of the envelope, the clamping force being applied to the ends of the shaft of the support cylinder and the working cylinders being associated with cambering means by applying bending forces on the extr excited about their trees.
  • the subject of the invention is a method making it possible to optimally correct the defects in thickness and flatness of the product and capable of being implemented in a simpler and less expensive installation, each rolling mill stand being in fact equipped with a single support cylinder with variable crown, the other support cylinder being a solid counter-cylinder bearing directly on the cage by the ends of its rotation shaft.
  • the full counter-cylinder is allowed to deform freely under the action of the clamping force by forming a concave support line towards the product, the deformation of the cylinder envelope is controlled.
  • support with variable bulging so as to form a convex support line towards the product and substantially parallel to the support line of the counter-cylinder and the camber of each working cylinder is adjusted individually so as to maintain constant the thickness of the rolling space over the entire width of the product, the latter having, at the outlet of the stand, a curved cross section which is then straightened by known means.
  • the camber of the working rolls is adjusted by applying to the ends of their bending forces shafts, the direction and intensity of which are individually adjustable for each end of each cylinder by pressing directly on the corresponding column. from the cage.
  • the bending of the two working cylinders is carried out by application of thrust forces in one direction or the other on the support members of their shafts and the position of each is adjusted separately.
  • support member of each working cylinder to keep the thickness of the rolling space constant.
  • the support members of the working rolls being constituted by chocks mounted sliding along the corresponding columns of the cage and on which bear camber cylinders
  • the camber cylinders are associated by groups independent of each other and corresponding respectively to each chock of each working cylinder, each group of jacks bearing directly on the corresponding column of the cage and being associated with a separate control means for the individual adjustment of the effort of camber applied on each end of each cylinder.
  • the adjustment of the external profile of the support cylinder and of the camber of the working cylinders is carried out automatically by referring to a model taking into account the dimensional and resistance characteristics of the various organs and of the product and capable of determine the corrections to be made to the profile of the deformable envelope and to the position of each support member from thickness and flatness measurements made on the strip downstream of the rolling mill, so as to keep the thickness of the film constant 'passage space of the strip over the entire width thereof.
  • the shape of the support line of each working cylinder on the product is determined from the measurements made downstream and according to the forces applied and the corrections to be made to the profile of the support cylinder and to the camber of the working cylinders by comparing the profiles of the support lines to keep them parallel to one another and spaced apart by a constant distance corresponding to the thickness to be given to the product .
  • FIGS. 1 and 2 schematically represent a quarto type rolling mill comprising a set of four superimposed rolls with parallel axes placed in a vertical clamping plane P, respectively two working rolls 1 and 2 framed by two support rolls , respectively upper 3 and lower 4 and between which a strip product passes 5.
  • the assembly is conventionally placed inside a rolling stand 6 comprising two vertical columns 61.
  • each cylinder 1, 2, 3, 4 is rotatably mounted around a shaft, respectively 11, 21, 31, 41 the ends of which are carried by support members 12, 22, 32, 42 housed in windows 62 provided in the two columns 61 of cage 6.
  • the tightening force is applied by screws or jacks 63 to the two ends of the shaft 31 of the upper support cylinder 3 and is collected by the lower support cylinder 4 whose shaft 41 is supported its two ends, directly on the cage 6, the product 5 thus being clamped between the two working cylinders 1 and 2 along contact generators 13, 23 each defining a line support.
  • the upper support cylinder 3 is a cylinder with variable crowning and, more precisely, with a deformable envelope. It in fact comprises a tubular cylindrical casing 33 rotatably mounted around the shaft 31 and bearing, moreover on the latter, by means of a series of retaining pads 34 each associated with a thrust cylinder 35 supplied by a hydraulic circuit which passes through a bore 36 formed along the shaft 31.
  • the jacks 35 are supplied separately and under individually adjustable pressures so as to be able to precisely adjust the profile of the casing 33 and in particular of the support line 37 on the working cylinder 1.
  • the installations of this type are symmetrical, the two support cylinders being with a deformable envelope.
  • the lower support cylinder 4 is a full cylinder consequently constitute a simple counter-cylinder for absorbing the pressure transmitted by the working cylinder 2.
  • Each working cylinder 1 or 2 also consists of a full cylinder of fairly small diameter, rotatably mounted around a shaft whose ends 11, 21 are carried by bearings mounted in chocks 7 housed in the corresponding windows 62 of the cage 6b and mounted sliding in the direction of the clamping plane P passing through the axes of the cylinders.
  • each chock 7 is provided with vertical guide faces 71 sliding along slides 72 formed on support pieces 73 fixed on the columns 61 of the cage 6 and in which are housed sets of hydraulic cylinders (8) (FIG. 2) bearing, in both directions, on the chocks 7 in order to adjust the position thereof along the slides 72.
  • each chock 7 is provided, on either side of the plane of symmetry P, with two ears 74 and associated with two pairs of jacks, respectively upper 81 and lower 82, the bodies of which are mounted in the support parts 73 and whose rods bear in opposite directions on the two horizontal faces of the ears 74.
  • each chock 7 by putting under pressure one or the other of the two pairs of jacks 81, it is possible to move each chock 7 for, respectively, removing it or bringing it closer to the horizontal plane P ⁇ of passage of the product 5 between the cylinders 1 and 2.
  • a positive bending is carried out when the chocks 7 are removed from the plane P ⁇ of the product 5 by increasing the pressure in the central part of the product and a negative bending when the chocks 7 are brought closer to the plane P ⁇ of product 5 by increasing the pressure on the edges of the product.
  • various known means can be used, for example using a flatness measuring roller 51 placed downstream of the cage 6 and on which the strip runs while being subject to some tension. Measuring members placed along the roller 51 make it possible to detect the variations along its width of the force applied by the strip and to deduce therefrom the flatness defects.
  • Another measuring device 52 makes it possible to measure the thickness of the strip and, optionally, to check the regularity of the latter over the width.
  • the clamping force is applied to the upper support cylinder 3, transmitted to the product 5 and collected by the lower support cylinder 4.
  • an asymmetrical support cage comprising a single support cylinder with a deformable envelope, normally the upper support cylinder 3 on which the clamping forces are applied, the cylinder lower support 4 being a simple full cylinder which is allowed to flex freely under the action of the forces applied.
  • the bulging of the casing 33 will be further increased so that the support line 37 is convex towards the product 5 and preferably has a curvature substantially equal to that of the support line 47 of the lower cylinder 5 which results from the free bending of the latter.
  • the two working cylinders 1 and 2 also take a curved shape, the support lines 13 and 23 being substantially parallel and concave upwards.
  • the fact that the product has a curved transverse profile does not hinder in any way the correction of the flatness and thickness defects which can be done in particular by playing on the bending forces applied on the two working rolls 1 and 2 .
  • the bending system 8 is shown in detail in Figures 3 and 4.
  • the sets of cylinders 81, 82, 81 ⁇ , 82 ⁇ acting respectively on the cylinders 1 and 2 are mounted in the guide parts 73 but separated one another.
  • the bodies of the positive cambering cylinders 82, 82 ⁇ consist of the same part 83 incorporated in the support part 73, but the chambers of the cylinders are separated from one another by a partition 84 and supplied separately and under individually adjustable pressures, which allows the two cylinders 82, 82 ⁇ for positioning chocks 7, 7 ⁇ to be adjusted independently of each other, each cylinder bearing directly on the column 61 of the rolling mill , via the support piece 73.
  • the product 5 therefore emerges curved from the rolling mill and is straightened in a device of the "anti-tile" type 53 which does not require a detailed description, such devices being well known.
  • FIG. 1 An installation for implementing the method has been shown, for example, schematically in FIG. 1.
  • This figure shows symbolically the stand 1 of the rolling mill with its four cylinders, the clamping cylinders 63 and the means 8 for applying bending forces to the shafts 11, 21, of the working rolls 1 as well that means 51 for checking the flatness and 52 for measuring the thickness, represented in front of the cage 6.
  • a regulation system 9 associated with a model 90, preferably a mathematical model.
  • the pressures in the different cylinders of com Mands of the pads 34 are determined individually by a hydraulic control assembly 39.
  • Each bending device 8 exerting a bending force on one end of the shaft of a working cylinder 1 or 2 is associated with a sensor 75 providing a signal representative of the position of the corresponding chocks 7 and with a hydraulic assembly 85 of adjustment of the forces exerted in one direction or the other by the groups of jacks 81 or 82.
  • These various measurement devices emit signals representative, respectively, of the clamping force applied by the jacks 63, of the deformation of the central shaft 31 of the upper support cylinder 3, of the positive or negative bending of the working cylinders 1 and 2, and of the thickness of the sheet which are applied to the various inputs 91, 92, 93, 94 of the regulation system 9.
  • the mathematical model 90 in which all the structural and dimensional characteristics of the cage and the cylinders as well as of the rolled product have been introduced determine, depending on the tightening force applied by the jacks 63 and the product characteristics, the profile of the support line 47 of the lower cylinder 4 and the pressures to be applied to the pads 34 by means of the hydraulic control member 39 so that the support line 37 of the upper cylinder 3 has a shape convex towards the strip and of the same curvature as the support line 47, according to the regulation process described in patent FR 83 16341 already cited.
  • the camber of the cylinders is adjusted by acting on the posi tion of chocks but the invention also applies to arrangements in which a bending torque is directly applied to each end of each cylinder.
  • the invention has been described in its preferred application to a quarto rolling mill but it can be applied to other types of rolling mill, for example of the sexto type with intermediate rolls provided with bending means, or else to three-cylinder rolling mills.
  • the product then passes between the working cylinder and a counter-cylinder corresponding to the lower support cylinder and that, according to the invention, is allowed to deform freely under the force applied, the upper support cylinder being of the type deformable casing with adjustable profile and the bending forces being applied to the single working cylinder to correct thickness irregularities.
  • a support cylinder with a rotating envelope was used, maintained by pads, this arrangement making it possible to obtain a particularly precise adjustment of the profile of the support generator, but it would be possible to 'apply the invention using other means for adjusting the profile of the support cylinder, in particular by inflating the envelope.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Metal Rolling (AREA)
EP88400821A 1987-04-09 1988-04-05 Verfahren und Vorrichtung zum Walzen von Metallbändern oder Blechen Expired - Lifetime EP0286533B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8705031 1987-04-09
FR8705031A FR2613641B1 (fr) 1987-04-09 1987-04-09 Procede et installation de laminage d'un produit sous forme de bande, plus specialement une tole metallique ou un feuillard

Publications (2)

Publication Number Publication Date
EP0286533A1 true EP0286533A1 (de) 1988-10-12
EP0286533B1 EP0286533B1 (de) 1992-05-20

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ID=9349953

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EP88400821A Expired - Lifetime EP0286533B1 (de) 1987-04-09 1988-04-05 Verfahren und Vorrichtung zum Walzen von Metallbändern oder Blechen

Country Status (4)

Country Link
US (1) US4912956A (de)
EP (1) EP0286533B1 (de)
DE (1) DE3871221D1 (de)
FR (1) FR2613641B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0623401A1 (de) * 1993-05-03 1994-11-09 Sms Schloemann-Siemag Aktiengesellschaft Biegeblock zum Biegen der Walzen von Mehrwalzen-Walzgerüsten
FR2786415A1 (fr) * 1998-11-30 2000-06-02 Kvaerner Metals Clecim Laminoir equipe de moyens de cambrage des cylindres de travail
CN111495979A (zh) * 2020-04-27 2020-08-07 陈益芬 一种金属板材成型自动化轧制机
CN111495978A (zh) * 2020-04-27 2020-08-07 陈益芬 一种金属板材成型轧制工艺

Families Citing this family (12)

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Publication number Priority date Publication date Assignee Title
US5755131A (en) * 1995-02-21 1998-05-26 The Bradbury Company, Inc. Method of and apparatus for removing camber from mult strips
IT1281601B1 (it) * 1996-01-09 1998-02-20 Innocenti Eng Spa Dispositivo di regolazione bilanciata della posizione dei rulli in gabbie a due rulli di lavoro per laminatoi longitudinali
US6065319A (en) * 1996-09-11 2000-05-23 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Rolling mill with laterally different velocities
US5943895A (en) * 1997-04-24 1999-08-31 Sms Schloemann-Siemag Aktiengesellschaft Dynamic crown control back-up roll assembly
US6000266A (en) * 1997-09-17 1999-12-14 The Bradbury Company Roll-forming machine with reversible rafts
US6216514B1 (en) 1999-01-22 2001-04-17 The Bradbury Company, Inc. Roll-forming machine
US6216505B1 (en) * 1999-06-25 2001-04-17 Sumitomo Metal Industries, Ltd. Method and apparatus for rolling a strip
US6209374B1 (en) 1999-10-08 2001-04-03 The Bradbury Company, Inc. Roll-forming machine with adjustable compression
US20090321491A1 (en) * 2008-06-06 2009-12-31 Wick William R W Edge Detection System
US20140331730A1 (en) * 2011-11-19 2014-11-13 Jilin University Rolling device and the method thereof
DE102012218353A1 (de) * 2012-10-09 2014-04-10 Siemens Ag Breitenbeeinflussung eines bandförmigen Walzguts
DE102013110981A1 (de) * 2013-10-02 2015-04-02 Thyssenkrupp Industrial Solutions Ag Verfahren zum Betreiben einer Anlage mit wenigstens einem Aggregat, das eine rotierende Oberfläche aufweist

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0112781A2 (de) * 1982-12-24 1984-07-04 Clecim Vorrichtung zur Messung der Plattheit eines unter Spannung stehenden Bandes
EP0140776A2 (de) * 1983-10-14 1985-05-08 Clecim Dicken- und Profilregelungsverfahren für ein flachgewalztes Erzeugnis während des Walzens

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AT373795B (de) * 1981-11-11 1984-02-27 Escher Wyss Ag Walzvorrichtung
CH656812A5 (de) * 1982-04-08 1986-07-31 Escher Wyss Ag Walzvorrichtung.
JPS58199606A (ja) * 1982-05-19 1983-11-21 Mitsubishi Heavy Ind Ltd 圧延機のロ−ルベンダ装置
DE3245090A1 (de) * 1982-12-06 1984-06-07 SMS Schloemann-Siemag AG, 4000 Düsseldorf Verfahren und einrichtung zum walzen von metallbaendern
JPS59185506A (ja) * 1983-04-05 1984-10-22 Ishikawajima Harima Heavy Ind Co Ltd 圧延機
JPS60130409A (ja) * 1983-12-16 1985-07-11 Hitachi Ltd 板材圧延機の形状制御方法
CH663555A5 (de) * 1984-02-06 1987-12-31 Escher Wyss Ag Verfahren und vorrichtung zum walzen von aluminium-folien.
JPS60206511A (ja) * 1984-03-29 1985-10-18 Sumitomo Metal Ind Ltd 板形状制御方法及びその装置
US4587819A (en) * 1984-08-31 1986-05-13 Brown, Boveri & Cie Aktiengesellschaft Method and circuit for flatness control in rolling mills
US4676085A (en) * 1985-07-31 1987-06-30 Wean United Rolling Mills, Inc. Rolling mill for controlling the contour of a workpiece
GB8528848D0 (en) * 1985-11-22 1985-12-24 Davy Mckee Poole Rolling mills
JPH0749124B2 (ja) * 1986-03-20 1995-05-31 株式会社日立製作所 ロールシフト式圧延機

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0112781A2 (de) * 1982-12-24 1984-07-04 Clecim Vorrichtung zur Messung der Plattheit eines unter Spannung stehenden Bandes
EP0140776A2 (de) * 1983-10-14 1985-05-08 Clecim Dicken- und Profilregelungsverfahren für ein flachgewalztes Erzeugnis während des Walzens

Non-Patent Citations (3)

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Title
PATENT ABSTRACTS OF JAPAN, vol. 8, no. 43 (M-279)[1480], 24 février 1984, page 104 M 279; & JP-A-58 199 606 (MITSUBISHI JUKOGYO K.K.) 21-11-1983 *
PATENT ABSTRACTS OF JAPAN, vol. 9, no. 290 (M-430)[2013], 16 novembre 1985, page 116 M 430; & JP-A-60 130 409 (HITACHI SEISAKUSHO K.K.) 11-07-1985 *
PATENT ABSTRACTS OF JAPAN, vol. 9, no. 46 (M-360)[1769], 27 février 1985, page 50 M 360; & JP-A-59 185 506 (ISHIKAWAJIMA HARIMA JUKOGYO K.K.) 22-10-1984 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0623401A1 (de) * 1993-05-03 1994-11-09 Sms Schloemann-Siemag Aktiengesellschaft Biegeblock zum Biegen der Walzen von Mehrwalzen-Walzgerüsten
FR2786415A1 (fr) * 1998-11-30 2000-06-02 Kvaerner Metals Clecim Laminoir equipe de moyens de cambrage des cylindres de travail
EP1005923A1 (de) * 1998-11-30 2000-06-07 Kvaerner Metals Clecim Walzwerk mit Mitteln zur Biegung der Arbeitswalzen
US6244090B1 (en) 1998-11-30 2001-06-12 Via Clecim Roll mill with bending means for the working rolls
CN111495979A (zh) * 2020-04-27 2020-08-07 陈益芬 一种金属板材成型自动化轧制机
CN111495978A (zh) * 2020-04-27 2020-08-07 陈益芬 一种金属板材成型轧制工艺

Also Published As

Publication number Publication date
FR2613641A1 (fr) 1988-10-14
US4912956A (en) 1990-04-03
DE3871221D1 (de) 1992-06-25
EP0286533B1 (de) 1992-05-20
FR2613641B1 (fr) 1990-12-14

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BE512106A (de)

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