EP1669141B1 - Procédé pour le réglage de la section des fils sortant d'un train de laminage de fil et train de laminage de fil - Google Patents

Procédé pour le réglage de la section des fils sortant d'un train de laminage de fil et train de laminage de fil Download PDF

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Publication number
EP1669141B1
EP1669141B1 EP05022541A EP05022541A EP1669141B1 EP 1669141 B1 EP1669141 B1 EP 1669141B1 EP 05022541 A EP05022541 A EP 05022541A EP 05022541 A EP05022541 A EP 05022541A EP 1669141 B1 EP1669141 B1 EP 1669141B1
Authority
EP
European Patent Office
Prior art keywords
tension
wire
cross
section
wire strand
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.)
Not-in-force
Application number
EP05022541A
Other languages
German (de)
English (en)
Other versions
EP1669141A1 (fr
Inventor
Ottmar Palzer
Lutz Kümmel
Matthias Burkhardt
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
Original Assignee
SMS Meer GmbH
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 Meer GmbH filed Critical SMS Meer GmbH
Publication of EP1669141A1 publication Critical patent/EP1669141A1/fr
Application granted granted Critical
Publication of EP1669141B1 publication Critical patent/EP1669141B1/fr
Not-in-force legal-status Critical Current
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
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • 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
    • B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/18—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/08—Diameter
    • 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
    • B21B37/48—Tension control; Compression control
    • B21B37/50—Tension control; Compression control by looper control
    • 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
    • B21B37/48—Tension control; Compression control
    • B21B37/52—Tension control; Compression control by drive motor control
    • 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
    • B21B38/006—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/08—Braking or tensioning arrangements
    • B21B39/084—Looper devices

Definitions

  • the invention relates to a method for controlling the cross section of emerging from a wire rod wire strands, in which the brought up from an intermediate wire rod of a finishing stand assembly and this optinal subsequent Nachwalzgerüstan ever is supplied, wherein the cross section of the wire strand is changed during the rolling process by controlled Switzerlandbeetzschlagung.
  • a wire rod mill for carrying out the method.
  • the tolerances behind the finished wire block are determined by many parameters. Great influence on the tolerances of the incoming in the finished block or the finished scaffold assembly cross section of the wire strand and its inlet temperature. These cross-sectional and temperature fluctuations result in tensile fluctuations in the finished block, which in turn results in tolerance fluctuations behind it.
  • the inlet cross section in the finished block depends inter alia on the train in the upstream intermediate road or in a bloc.
  • the rolling conditions do not remain constant during the rolling of the rod, but constantly change during the rolling. Under these Rolling conditions are especially the parameters inlet cross section, temperature and longitudinal train of importance, which lead to cross-sectional fluctuations.
  • the invention is therefore an object of the invention to provide a control method and a wire rod of the type mentioned, which allow in a simple manner to adapt the wire production to the varying rolling conditions and independently of these provide an optimal finished cross-section of the wire or billet.
  • the invention is based on the finding that, unlike the known rolling mill training, a constant outlet cross section of the finished stand arrangement or, if present, the wire strand emerging from a Nachwalzgerüstanaku (Nachwalzblock) can be determined due to change in the inlet cross section of the wire in the respective framework arrangement ,
  • the tension control of the wire strand can here at any point and in extreme cases even before a last drive or single group, d. H. take the last rolling.
  • these tractive forces can be applied to the wire by pairs of variable-speed horizontal and vertical stands arranged in front of the finishing stand arrangement.
  • a piston-cylinder unit can also be arranged between the two rolling stands, on whose piston, which can be controlled via a displacement sensor, a tensioning roller acting upon the wire-strand can be arranged.
  • the cross section A 0 and the temperature T 0 can be measured.
  • a "feed forward" For a defined type of steel and temperature T 0 , as shown in FIG. 3, including the reference numeral list, be constructed by correlations between A 0 and A 1, a "feed forward". It can thus be achieved that the first billet or wire strand of a new batch is within a permissible tolerance range.
  • the invention enables an adaptive cross-sectional control (AQR) as a hierarchical sizing system, which ensures the best possible finished cross-section, with minimal tolerances, at all times by means of a continuous adaptation of the puncture cross-section, regardless of the constantly changing rolling conditions.
  • the AQR assumes that all subordinate rules or measurements, ie. H. Position Tensile Measurement (PZM), Position Tensile Control (PZR), and Position Cross Section Control (PQR) are active.
  • a Profilmeß réelle is required behind the rolling mill assembly. It is the round width, ie the caliber filling behind the rolling stand assembly used as a control variable for the cross-sectional control before the roll stand.
  • the cross section A 1 is varied by a variable train F z (t) between the scaffolds 1 and 2 in A 1 (t) that there is behind the roll stand optimal caliber filling and thus a constant width in the cross section A 2 and thus a good Ovality exists.
  • a profile measuring device or system must also be provided in front of the first stand of the rolling stand arrangement.
  • finishing stand arrangement consists of a sequence of stand groups, the rolls which can be set for themselves and / or for have drivable rollers.
  • the arrangement for tension measurement and for loading the wire of Fig. 1 consists of a between the rollers of a vertical horizontal roller pair VW, HW, of which the vertical roller pair VW has a variable speed drive DR, arranged piston cylinder unit KZ, on the piston rod KS a tension roller SR stores , which acts on the continuous wire strand DS from below.
  • the piston cylinder KZ as a hydraulic or pneumatic control cylinder is connected to a force transducer KA and a displacement sensor WG.
  • the device of Figure 1 For the method of controlled variation of the input cross-section of the wire strand DR in the finished block FB by tensile forces applied to the wire, the device of Figure 1 is used. This works as follows: After entry of the beginning of the wire strand DS, the tension roller SR is driven upwards by the piston cylinder KZ against the wire strand DS, so that this undergoes a deflection, the dimension of which forms the basis for the clamping force, the value continuously recorded and stored a computer and train control device is supplied. Since the tension exerted on the wire rod DR is a function of the tension and deflection of the wire under the tension roller SR he controlled and regulated by means of a position control of the tension roller under the position sensor WG.
  • HW cross-sectional errors of the wire strand DS can be eliminated and achieve a relatively constant inlet cross section in the finishing stand assembly FB with the result of an optimal exit or finished cross section of the arrangement.
  • a set deflection is specified and their size is optimized depending on the cross section.
  • the ratio between tensile force and clamping force can be optimized.
  • the speed at the tension-controlled stand VW is corrected until the clamping force, d. H. also the current train reaches the given reference value. Thereafter, the clamping force is kept constant by further speed corrections.
  • Measuring means are the profile measuring devices PMI shown in Figure 2 behind the vertical, horizontal roller pair VW and HW of the arrangement of FIG 1 and behind the finishing stand arrangement or the finished block FB according to FIG. 2.
  • the prerequisite for this cross-sectional regulation is tension control. If the tip of the wire rod DS passes the horizontal rolling stand HW, the tension control is activated first. If the tip then passes the profile measuring system PMI, the rolling stock cross section is continuously measured before the finishing stand arrangement FW and parameters relevant to the regulation, such as profile width and height, are passed on to the computer, not shown, and displayed on the monitor.
  • the cross-section control uses the tension between the two scaffolds VH and HW to optimize the outlet cross-section of these scaffolds.
  • the controlled variable for this case is not the train, as with the tension control, but the outlet cross section.
  • the train is no longer kept constant but varies to maintain a cross-sectional setpoint.
  • the train by speed correction can be realized on the train-controlled rolling stand VW or by varying the deflection.
  • the profile measuring device PMII behind the finishing block FB becomes necessary.
  • the caliber filling behind this framework arrangement is used as a control variable for the cross-sectional control before the finished block.
  • the inlet cross-section is varied by a variable train between the stands VW and HV so that behind the finished block FB optimal caliber filling and a constant width in cross-section and thus good ovality is achieved.

Landscapes

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

Claims (9)

  1. Procédé de réglage de la section transversale de fil sortant d'un train de laminage de fil, dans lequel la barre de fil (DS) approchée depuis un train intermédiaire est acheminée à un dispositif de cage finisseuse (FB) et à un dispositif de cage de post-laminoir se raccordant facultativement à celui-ci, la section transversale du fil étant modifiée lors de l'opération de laminage par sollicitation à la traction contrôlée, la sollicitation à la traction pour les modifications de section transversale étant réalisée au plus tard avant le dernier groupe moteur commun du dispositif de cage finisseuse (FB) ou du dispositif de cage de post-laminage,
    caractérisé en ce que la sollicitation à la traction est dosée de manière à ce que le fil sorte avec une section transversale restant constante du dispositif de cage finisseuse (FB) ou du dispositif de cage de post-laminage, de préférence du dispositif de cage finisseuse (FB).
  2. Procédé de réglage selon la revendication 1,
    caractérisé en ce que
    la sollicitation à la traction de la barre de fil (DS) est assurée de manière connue en soi par une paire de cages horizontales et verticales à régime réglable (1, 2).
  3. Procédé de réglage selon la revendication 1,
    caractérisé en ce que
    il est généré dans la barre de fil (DS), à l'aide d'un rouleau tendeur comprimé (SR) par l'intermédiaire d'un indicateur de trajectoire (WG), une courbure théorique qui équivaut à un rapport calculé d'avance de la force de tension à la force de serrage et que le réglage de la valeur de référence sur la force de traction agissant sur la barre de fil (DS) a lieu par réglage du régime des cages de laminoir voisines.
  4. Procédé de réglage selon la revendication 2,
    caractérisé en ce que
    la sollicitation à la traction de la barre de fil (DS) a lieu entre des groupes de cages réglables individuellement.
  5. Procédé de réglage selon la revendication 4,
    caractérisé en ce que
    la sollicitation à la traction de la barre de fil (DS) est contrôlée à l'avance par une correction d'élargissement dépendant de la température.
  6. Procédé de réglage selon une des revendications 1 à 5,
    caractérisé en ce que
    les valeurs enregistrées par les moyens de mesure de profil derrière les cages de laminoir dont la traction est réglée de la section transversale de la barre de fil (DS) sont traitées arithmétiquement et que la section transversale d'entrée de la barre de fil (DS) est modifiée avant l'entrée dans les derniers étages de déformation non régulés par réglage de traction de la barre de fil (DS) entre les cages de laminoir dont la traction est réglée et éventuellement à l'aide du rouleau tendeur pour obtenir une section transversale de sortie restant constante de la barre de fil (DS) mesurée derrière le dispositif de cage finisseuse (FB)
  7. Train de laminage pour la réalisation du procédé selon une des revendications 1 à 6,
    caractérisé en ce que
    les dispositifs de cage de laminoir sont composés d'une suite de groupes de cages qui présentent des cylindres pouvant être approchés individuellement (VW/HW) et/ou des cylindres pouvant être entraînés individuellement (VW/HW) et comportant des moyens (PMI, PMII) se raccordant à un dispositif de réglage de traction pour mesurer la section transversale de la barre de fil (DS).
  8. Train de laminage selon la revendication 7,
    caractérisé par
    des systèmes de mesure de profil disposés devant et derrière les cages de laminoir dont la traction est réglée ainsi que derrière le dispositif de cage finisseuse (FB).
  9. Train de laminage selon une des revendications 1 à 4,
    caractérisé par
    des pyromètres (PYI/PYII) disposés devant et derrière les cages de laminoir dont la traction est réglée pour mesurer la température de la barre de fil (DS).
EP05022541A 2004-12-07 2005-10-15 Procédé pour le réglage de la section des fils sortant d'un train de laminage de fil et train de laminage de fil Not-in-force EP1669141B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004058825 2004-12-07
DE102005036184A DE102005036184A1 (de) 2004-12-07 2005-08-02 Verfahren zur Regelung des Querschnitts von aus einer Drahtwalzstraße austretenden Drähten und Drahtwalzstraße

Publications (2)

Publication Number Publication Date
EP1669141A1 EP1669141A1 (fr) 2006-06-14
EP1669141B1 true EP1669141B1 (fr) 2007-12-19

Family

ID=35344691

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05022541A Not-in-force EP1669141B1 (fr) 2004-12-07 2005-10-15 Procédé pour le réglage de la section des fils sortant d'un train de laminage de fil et train de laminage de fil

Country Status (4)

Country Link
US (1) US7617711B2 (fr)
EP (1) EP1669141B1 (fr)
AT (1) ATE381393T1 (fr)
DE (2) DE102005036184A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007050891A1 (de) * 2007-10-24 2009-04-30 Siemens Ag Auf der Streuung einer Istgröße eines Walzguts basierende Adaptierung eines Reglers in einem Walzwerk
DE102017213371A1 (de) * 2017-08-02 2019-02-07 Sms Group Gmbh Vorrichtung und Verfahren zum einseitigen und/oder beidseitigen Beschichten eines metallischen Bandsubstrats

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540248A (en) * 1968-07-18 1970-11-17 Bethlehem Steel Corp Speed control system for a rolling mill
GB1214612A (en) * 1969-01-14 1970-12-02 Schloemann Ag Improvements in or relating to the rolling of wire rod and small steel sections
BE790448A (fr) * 1971-01-13 1973-02-15 Southwire Co Dispositif de refroidissement pour train de
US4141071A (en) * 1977-03-17 1979-02-20 Bethlehem Steel Corporation Automatic diametric dimension control for mill for rolling round bars
US4607511A (en) * 1985-04-26 1986-08-26 Morgan Construction Company Tension prefinishing with sizing stands
US4662202A (en) * 1985-07-23 1987-05-05 Cargill, Incorporated Low tension cascade mill speed control by current measurement with temperature compensation
US4665730A (en) * 1985-10-09 1987-05-19 Morgan Construction Company Method of controlling product tension in a rolling mill
US4674310A (en) * 1986-01-14 1987-06-23 Wean United Rolling Mills, Inc. Strip tension profile apparatus and associated method
DE19543605A1 (de) * 1995-11-23 1997-05-28 Schloemann Siemag Ag Verfahren zur Querschnittsregelung von Walzgut
IT1297570B1 (it) * 1997-12-04 1999-12-17 Automation Spa Centro Procedimento di controllo del tiro del laminato
SE517670C2 (sv) * 1998-07-10 2002-07-02 Abb Ab Förfarande och anordning för en kontinuerlig styrning av mellansparsspänningen i ett valsverk
DE19831481A1 (de) * 1998-07-14 2000-01-20 Schloemann Siemag Ag Walzverfahren für stabförmiges Walzgut, insbesondere Stabstahl oder Draht
DE19849068B4 (de) * 1998-10-24 2005-03-03 Sms Demag Ag Zugregelverfahren für einen Walzgutabschnitt

Also Published As

Publication number Publication date
ATE381393T1 (de) 2008-01-15
EP1669141A1 (fr) 2006-06-14
DE102005036184A1 (de) 2006-06-08
US7617711B2 (en) 2009-11-17
DE502005002282D1 (de) 2008-01-31
US20060150701A1 (en) 2006-07-13

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