EP0779113B1 - Dispositif de mesure du profil des cylindres d'un laminoir - Google Patents

Dispositif de mesure du profil des cylindres d'un laminoir Download PDF

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Publication number
EP0779113B1
EP0779113B1 EP96250279A EP96250279A EP0779113B1 EP 0779113 B1 EP0779113 B1 EP 0779113B1 EP 96250279 A EP96250279 A EP 96250279A EP 96250279 A EP96250279 A EP 96250279A EP 0779113 B1 EP0779113 B1 EP 0779113B1
Authority
EP
European Patent Office
Prior art keywords
roll
measuring
measuring device
distance sensors
contour
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.)
Expired - Lifetime
Application number
EP96250279A
Other languages
German (de)
English (en)
Other versions
EP0779113A1 (fr
Inventor
Dieter Dipl.-Ing. Figge
Peter Dipl.-Ing. Jollet
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 Siemag AG
Original Assignee
SMS Demag AG
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 SMS Demag AG filed Critical SMS Demag AG
Publication of EP0779113A1 publication Critical patent/EP0779113A1/fr
Application granted granted Critical
Publication of EP0779113B1 publication Critical patent/EP0779113B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21B38/12—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 camber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill

Definitions

  • the invention relates to a roller contour measuring device for measuring the contour of the Roll surface of hot strip rolls installed in the roll stand according to Preamble of claim 1.
  • a four-roll stand for rolling metal strips that can be rotated in chocks stored two work and two backup rolls is for example from DE-A-2 260 256 known. Due to the process, there is heavy wear on the rollers Roll surfaces, especially the work rolls. Especially in the area of the edges of the Rolled goods form local depressions in the roll surface, so-called wear marks, which occur more frequently if metal strips of the same width are continuously rolled become. As the rollers wear out, the flatness of the rolled metal strips drastically. To prevent or reduce this, it is required to regrind or change the rollers at cyclical intervals. This Distances are generally rigid and depend on the won Operational experience. Since the wear of the rollers is irregular, the Renewal cycles of the rolls or roll surfaces in non-optimal, i.e. performed in the most cost-effective manner.
  • a distance sensor is usually used lengthwise for measuring passed over the roller surface.
  • a mechanical distance sensor used on roll grinding machines is known for example from EP-B1-0239161.
  • this distance sensor it is not possible, especially due to the unfavorable environmental conditions, especially the high temperatures occurring in the area of the rollers, the contour of the hot Measure the roll surface directly in the stand because of thermal expansion the measurement error is too large.
  • the measurement with such a measuring device takes relatively long, which is disadvantageous in that the thermal bale of the roller is already after a minute it starts to recede significantly, but first and foremost an exact one Detection of the thermal bale, i.e. the real contour of the hot Roller surface during the rolling process, is interested.
  • a roller contour measuring device is from "Journal of the Iron and Steel Institute of Japan, Vol. 79, No. 7, pages 800-807".
  • the invention provides that the side member from a parking position to a measuring position is movable parallel to the axis of the roller.
  • the position of the Longitudinal member can be changed relative to the roller in its axial direction, which by Longitudinal displacement of the roller and / or the longitudinal member can be realized.
  • a variety of distance sensors Arranging at a distance from each other on the side member has the further advantage that the distance sensors for measuring the roller contour do not cover the whole Roll length must be performed, but only over a much smaller Partial length. This enables ten to be distributed evenly over the entire length of the roll arranged distance sensors, the required longitudinal measuring path of each one Distance sensor during the measurement of the roll contour to 10% of the roll length to reduce.
  • the large number of distance sensors makes a clear one Shortened measuring time.
  • the use of multiple distance sensors has additionally the advantage that measurement errors, for example due to vibrations, can be subsequently corrected in a simple manner. It changes e.g. the position of the side member randomly during the measurement, it will Distance change that does not represent a change in the roll profile of everyone Distance sensors simultaneously detected what a subsequent correction of this Measurement error allowed.
  • the scanning of the roller with the invention Measuring device is expediently such that either in the measuring position the measuring carrier with respect to the roller in its axial direction or by the Roller axially opposite the distance sensors fixed on the side member is moved. It is also conceivable to counter-roll and longitudinal beam move.
  • the work roll is advantageously arranged to be longitudinally displaceable.
  • Another Improvement of the measuring device can be achieved in that the longitudinal beam in the measuring position is supported on the ends of the roller during the measurement, and via a prism with two rollers.
  • the Measuring device is a stable fixation of the distance sensors with respect to Roll surface achieved, the parallelism between the roll axis and The longitudinal beam axis is retained.
  • the invention proposes that the distance sensors be at the same distance to arrange each other on the side member.
  • the longitudinal member is expediently shown in the measuring position relative to the roller in its axial direction by a distance slidable, which is greater than or equal to the distance between two immediately adjacent Distance sensors.
  • the distance sensors are encapsulated with mechano-electrical position detection, which creates a Measurement with high accuracy is made possible.
  • Systematic measurement errors can also be kept low by the fact that Measuring heads of the distance sensors are aligned radially on the roller surface.
  • the distance sensors are advantageously electronic Evaluation unit connected in which the measured value curves of the individual Distance sensors can be assembled to form a continuous measuring curve of the roller contour are.
  • the invention can be used both in two-roll stands and on multiple or Use four-roll stands and both in rolling mills for flat products as well Insert profiles.
  • Fig. 1 shows a section of a roll stand 2 in longitudinal section, with 1 one of the two work rolls is designated.
  • the two ends of the work roll 1 are each in chocks 3 in the roller stand 4 rotatably mounted.
  • a roll contour measuring device 5 above the work roll 1 in the roll stand 2 arranged, which has a plurality of distance sensors 6, the same Distance to each other over the entire length of a longitudinal beam 7 distributed directly are attached to this, the longitudinal beam 7 over the entire length of the Work roll 1 extends.
  • the measuring heads of the distance sensors 6 are radial on the Roll surface of the work roll 1 aligned.
  • the distance sensors 6 themselves are designed as mechano-electrical distance sensors, which is a non-contact enables exact distance determination.
  • the longitudinal beam 7 is connected to a supply line and discharge line 8 Cooling water circuit connected and to dissipate the absorbed radiant heat through which cooling water can flow.
  • the longitudinal beam 7 is tubular, e.g. with a Inner and an outer tube formed while leaving an annular gap;
  • cooling coils can be provided for targeted cooling.
  • the longitudinal beam 7 is preferably made of a low-stretch material manufactured, e.g. from an INVAR nickel alloy with 36% Ni and 64% Fe, to their To prevent thermal expansion and deformation, especially with one-sided Heat radiation as INVAR has practically no expansion when the temperature changes having.
  • the roll contour is detected by an axial roll shift enables, whereby the distance sensors 6 virtually over the roller surface become.
  • the longitudinal beam 7 can also be axial during the measurement be moved.
  • the required stroke is larger in any case equal to the distance between two immediately adjacent distance sensors 6.
  • the through the large number of distance sensors 6 necessitates a short displacement path, to achieve a measuring time of less than 30 s for the entire roll contour measurement.
  • For a full movement stroke (distance between two immediately adjacent distance sensors 6) approx. 5 s are required, during this time the distance of the Longitudinal beam 7 from work roll 1 by less than 0.01 mm, i.e. at a Distance of 50 mm from the work roll 1 is the measuring accuracy of the roll contour measuring device 5 better than 0.02 mm.
  • the ends of the side member are each via a cardan joint 9 7 connected telescopically slidable guide tubes 10, which two displacement cylinders 11 are extendable in the direction of work roll 1.
  • the Cardan joints 9 allow the automatic adjustment of the side member to a possible skew of the roller, so that the two longitudinal axes always run in parallel even under these conditions.
  • Figures 3 and 4 show a schematic cross section through the roll stand in Area of prisms 12; the roller contour measuring device is located once in the park position (Fig. 3) and once in the measuring position (Fig. 4).
  • FIG. 5 shows the construction of a mechano-electrical distance sensor 6.
  • a longitudinally displaceable cylinder 31 is used as a strain gauge 32 attached on both sides in the housing 30 and on one side with an electronic Evaluation unit (not shown) is connected.
  • the lower end face of the cylinder 31 lies on a rigid intermediate element 33 on a ball 34 formed Probe on.
  • the inside of the housing is in the lower area by a Metal bellows 35 protected against moisture and steam; the whole Distance sensor 6 is encapsulated.
  • a displacement of the probe ball 34 in Longitudinal direction of the cylinder 31, e.g. due to changes in distance of the Contact surface, causes the upper end of the cylinder 31 to the Strain gauge 32 presses and bends it. This bend is from the Evaluation unit in a proportional to the deflection of the strain gauge 32 electrical signal convertible.
  • the electronic evaluation unit the measured value curves of the individual distance sensors to form a continuous measurement curve the roller contour can be assembled.
  • the rolling process is briefly interrupted and the Roller contour measuring device 5 is turned off by actuating the displacement cylinder 11 the parking position moved into the measuring position parallel to the axis of the work roll 1.
  • the work roll 1 parallel to the axis of the The longitudinal beam 7 is displaced, the displacement being greater than the distance between two immediately adjacent distance sensors 6.
  • the longitudinal beam 7 is continuously detected by the distance sensors 6 Distances to the roller surface of the electronic evaluation unit.
  • the roller contour measuring device 5 is again in the Park position retracted.
  • the Measured value curves of the individual distance sensors in the evaluation unit to one continuous measurement curve of the roller contour composed and with a predetermined Target profile compared.
  • the side members 7 with the distance sensors 6 are designed to be displaceable in their axial direction. It can of course, the work rolls 1 and the longitudinal beam 7, so both during Measurement can be shifted axially in opposite directions to each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Claims (4)

  1. Dispositif de mesure pour mesurer le contour de la surface de cylindres (1) pour feuillards à chaud montés dans la cage de laminoir (2), comportant une pluralité de capteurs de distance (6), dont les têtes de mesure sont orientées, sur un support longitudinal (7) s'étendant sur la longueur du cylindre, transversalement à l'axe longitudinal du cylindre au même écartement l'un par rapport à l'autre, radialement vers la surface du cylindre, les capteurs de distance (6) étant reliés à une unité d'exploitation, dans laquelle les courbes partielles des valeurs de mesure des capteurs de distance individuels (6) peuvent être assemblées en une courbe de mesure continue du contour du cylindre,
    caractérisé en ce que le support longitudinal (7) fabriqué en une matière à faible dilatation est refroidi par de l'eau et peut être déplacé d'une position de parcage dans une position de mesure parallèlement à l'axe du cylindre (1), dans laquelle le support longidutinal (7) est appuyé sur les extrémités du corps du cylindre ou les surfaces de lunettes au moyen d'articulations à la Cardan (9), la position du support longitudinal (7), dans la position de mesure par rapport au cylindre (1), pouvant être modifiée dans sa direction axiale.
  2. Dispositif de mesure selon la revendication 1,
    caractérisé en ce que la matière à faible dilatation du support longitudinal est un alliage de nickel Invar ayant 36% de Ni et 64% de Fe.
  3. Dispositif de mesure selon la revendication 1 ou 2,
    caractérisé en ce que le support longitudinal (7) est appuyé par l'intermédiaire d'un prisme (12) à deux rouleaux (13).
  4. Dispositif selon la revendication 1,
    caractérisé en ce que les capteurs de distance (6) sont réalisés comme capteurs de distance mécano-électriques encapsulés.
EP96250279A 1995-12-11 1996-12-04 Dispositif de mesure du profil des cylindres d'un laminoir Expired - Lifetime EP0779113B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19547436 1995-12-11
DE19547436A DE19547436A1 (de) 1995-12-11 1995-12-11 Walzenkontur-Meßeinrichtung

Publications (2)

Publication Number Publication Date
EP0779113A1 EP0779113A1 (fr) 1997-06-18
EP0779113B1 true EP0779113B1 (fr) 2001-04-18

Family

ID=7780569

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96250279A Expired - Lifetime EP0779113B1 (fr) 1995-12-11 1996-12-04 Dispositif de mesure du profil des cylindres d'un laminoir

Country Status (2)

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EP (1) EP0779113B1 (fr)
DE (2) DE19547436A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10059321A1 (de) * 2000-11-29 2002-06-13 Sms Demag Ag Konturmeßeinrichtung zur Messung der Kontur einer in einem Walzengerüst angeordneten Walze
DE10237375A1 (de) * 2002-08-12 2004-02-26 Bklt Lasersystemtechnik Gmbh Vorrichtung und Verfahren zur geometrischen Vermessung eines im Querschnitt kreisförmigen Rohres
EP1406357A1 (fr) * 2002-10-04 2004-04-07 Siemens Aktiengesellschaft Alimentation du courant d'excitation pour une machine électrique tournante
DE20307042U1 (de) * 2003-05-07 2003-09-11 Fagus-GreCon Greten GmbH & Co. KG, 31061 Alfeld Vorrichtung zum Zuordnen von Meßsensoren zu einer an den Sensoren vorbeigeführten Materialmenge
DE102009012904A1 (de) * 2009-03-12 2010-09-16 Evertz Hydrotechnik Gmbh & Co. Kg Messvorrichtung zum Messen der Oberflächentemperatur von Arbeitswalzen
CN108759633A (zh) * 2018-08-13 2018-11-06 上海宝骜工业技术服务有限公司 一种辊型轮廓测量仪
EP3851217B1 (fr) * 2020-01-15 2022-07-13 Primetals Technologies Germany GmbH Adaptation améliorée d'un modèle de cylindre

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS517635B2 (fr) 1971-12-10 1976-03-09
CA1111638A (fr) * 1978-06-07 1981-11-03 White Consolidated Industries, Inc. Calibre sur laminoir et systeme de controle de la planeite
JPS60253809A (ja) * 1984-05-30 1985-12-14 Sumitomo Metal Ind Ltd ロールプロフイル計測装置
JPS6138501A (ja) * 1984-07-31 1986-02-24 Anritsu Corp 曲がり測定装置
JPH0659487B2 (ja) * 1986-02-15 1994-08-10 新日本製鐵株式会社 ロ−ルクラウンの測定方法
IT1191688B (it) 1986-03-20 1988-03-23 Giustina International Spa Macchina rettificatrice per cilindri con organi di rilievo e controllo dimensionale e superficiale
JPH0615970B2 (ja) * 1987-09-01 1994-03-02 三菱重工業株式会社 ロールプロフィール計測方法

Also Published As

Publication number Publication date
DE19547436A1 (de) 1997-06-12
EP0779113A1 (fr) 1997-06-18
DE59606799D1 (de) 2001-05-23

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