EP2869945B1 - Kontinuierlich arbeitende bandgiess- und walzanlage - Google Patents

Kontinuierlich arbeitende bandgiess- und walzanlage Download PDF

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Publication number
EP2869945B1
EP2869945B1 EP13765617.9A EP13765617A EP2869945B1 EP 2869945 B1 EP2869945 B1 EP 2869945B1 EP 13765617 A EP13765617 A EP 13765617A EP 2869945 B1 EP2869945 B1 EP 2869945B1
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EP
European Patent Office
Prior art keywords
unit
casting
strip
rolling
rollers
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
EP13765617.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2869945A2 (de
Inventor
Hellfried Eichholz
Karl-Heinz Spitzer
Sven Klawiter
Rune SCHMIDT-JÜRGENSEN
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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Publication date
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Priority to PL13765617T priority Critical patent/PL2869945T3/pl
Publication of EP2869945A2 publication Critical patent/EP2869945A2/de
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Publication of EP2869945B1 publication Critical patent/EP2869945B1/de
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Classifications

    • 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
    • B21B1/46—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 metal immediately subsequent to continuous casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting
    • 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
    • B21B1/46—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 metal immediately subsequent to continuous casting
    • B21B1/463—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 metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0631—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a travelling straight surface, e.g. through-like moulds, a belt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/14—Plants for continuous casting
    • B22D11/143—Plants for continuous casting for horizontal casting

Definitions

  • the invention relates to a continuous strip casting and rolling plant according to the preamble of claim 1.
  • the invention relates to a strip casting and rolling plant, as they are known from DE 102007056191 A1 is known.
  • a continuous strip casting and rolling plant is z. B, from steel research 74 (2003), No, 11/12, page 724-731.
  • this known as DSC process (direct strip casting) manufacturing process is suitable for the production of hot strip of high manganese lightweight steel.
  • the melt from a feed vessel via a runner and a siphon-like design as a pouring nozzle outlet region of a casting machine is placed on a revolving casting belt a horizontal strip casting.
  • the abandoned melt solidifies to a pre-strip with a thickness in the range between 6 - 20 mm. After solidification, the pre-strip is subjected to a hot rolling process.
  • the casting, rolling and winding of the steel strip requires the strip caster to carry out the removal of the cast strand from the casting machine with very little tensile force, ideally with a zero draw force.
  • the known high manganese-containing lightweight steels tend even at slight tensile stresses, especially if the band is not solidified, to tape breaks, this leads to plant downtime and increased repair costs.
  • strip tension regulations for continuous rolling mills for example, from DE 101 37 246 A1 or the DE 26 18 901 C2 known.
  • these designed for continuous rolling mills devices for tension control are not sufficient to control the strip tension between the casting unit and the subsequent roller unit so and keep it at a low level that tape cracks can be safely avoided.
  • the object of the invention is to provide a continuous strip casting and rolling plant, can be safely avoided with the tape cracks.
  • the stripper minimization, the casting unit and the following roller unit are mechanically decoupled, wherein for decoupling at least one at least two drivable rollers having drive unit for driving the belt between the casting belt and roller unit is arranged.
  • the strip casting and rolling plant according to the invention is fundamentally suitable for the production of hot strips of the most diverse metallic materials, but in particular for high manganese-containing lightweight structural steel, which reacts very sensitively to excessive strip tensile stresses.
  • the operating times and thus the efficiency of the strip casting can be significantly increased by the decoupling and strip tension control according to the invention and thus the maintenance costs for the strip casting can be significantly reduced.
  • a decoupling of driver unit and roller unit is additionally carried out.
  • a pneumatically operated working as a looper spring unit is used for decoupling.
  • the driver unit according to the invention is rotatably mounted eccentrically, wherein the rollers of the driver unit are displaceable substantially parallel to the strand normal during the casting and rolling process in the casting direction or counter to the casting direction.
  • the bearings can be either below the lower or above the upper roller in the frame of the driver unit.
  • the storage corresponds to a pendulum bearing of the driver unit, the "pendulum" (driver unit) is stored below or above.
  • one or more driver units may be provided, each of which is rotatably mounted eccentrically.
  • the individual driver units with the roller pairs can carry out movements with the storage according to the invention and counter to the casting direction.
  • the driver units are supported according to the invention via load cells (train pressure) against the frame of the Multirollerglättsystems.
  • load cells train pressure
  • the resulting from the force movements with and against the casting direction are limited by the elasticity of the load cells in the measuring range (Hugh range) to a few microns. As a result, no effective movements in the direction of the strand normal are exercised.
  • the upper rollers of the driver units are provided with coats of copper in order to accelerate the cooling at the top of the solidifying strand.
  • FIG. 1 a section of strip casting and rolling plant according to the invention with a strip tension minimizing Bandzugregelung.
  • the strip casting and rolling plant consists of a pouring unit not shown here with a feed vessel containing the melt with a horizontal runner and designed as a pouring spout and a two deflection rollers and a circulating cooled conveyor belt 1 having primary cooling zone and at least one subsequent from at least two drivable rollers existing roller unit 4. Shown here is the deflection roller 2 of the conveyor belt 1 at the transfer side to the roller unit. 4
  • the casting unit (Caster) and the following rolling unit 4 are mechanically decoupled, wherein three driver units 3, 3 ', 3 "with two rollers for driving the cast strip 5 between the conveyor belt 1 and the rolling unit 4 are arranged for decoupling.
  • driver unit 3 3 ', 3 "and roller unit 4
  • a decoupling of driver unit 3, 3 ', 3 "and roller unit 4 is provided, wherein for decoupling a pneumatically operated lifting device 6, as Looper working resilient unit is used.
  • the cast strip 5 is first removed from the conveyor belt 1 at the master speed v0.
  • the exit speed of the belt 5 is measured by a tachometer T0 and the peripheral speed of the driver rollers is synchronized to T0. At this speed, the belt 5 enters the driver units 3, 3 ', 3 "of a multi-roll buffing system.
  • the upper roller After running into the pair of rollers of the first driver unit 3, the upper roller is lowered onto the belt 5 with a defined force. Due to existing unsynchronities between the conveyor belt 1 and pair of rollers, the belt 5 is pulled or braked by the conveyor belt 1. Now, a first regulator engages and adjusts the roller pair speed so that the pair of rollers exerts no pulling or pushing forces on the cast band 5.
  • Unsynchronities can be caused, for example, by different roll diameters (wear), by different setting forces (degree of deformation) or shrinkage due to cooling of the strip.
  • the speed of the second roller pair of the driver unit 3 ' is now adjusted by a further control device so that here is a tensile force of ideally 0N established.
  • the pairs of rollers of the third driver unit 3 "and any further pairs of rollers work analogously to the second pair of rollers.
  • the solidifying belt 5 now exits the driver units 3, 3 ', 3 "of the multi-scroll system and is pulled by a pilot train cold-strand device 7.
  • the last pair of rollers also has a force-measuring device on the drive unit 3".
  • the pilot train cold-strand device 7 also adjusts to a measured tensile force of ON on the last pair of rollers and pulls the belt 5 via the lifting device 6 in the not yet employed roller unit 4. Shown is as a rolling unit 4 only a rolling mill, but it can, depending on Request also be several.
  • the looper bow is set up (Looper lifts) and the nip is closed.
  • the action of the lifting device 6 and the rolling unit 4 on the force measurement on the drive unit 3 "of the last pair of rollers of the multi-roll smoothing system is adjusted by means of a further control device that also here a traction of ON occurs.
  • rollers of the roller unit 4 are placed in an advantageous development on active hydraulic shock absorbers on the strand, so that the influences when immersing the rollers in the band 5 (degree of deformation) are reduced or suppressed.
  • the resulting loop loop gives the rolling speed control sufficient time to correct any unsynchronities.
  • the pilot pulling device 7 already pulls the cast strip 5 with the required force into the first rolling stand of the rolling unit 4, so that no force jumps occur here as well.
  • the contact speed of the rollers is synchronized by means of inlet tachometers prior to placement on the speed of the incoming belt 5. This also prevents interference with the belt 5 is prevented.
  • the looper control can either be force-controlled, height-controlled or designed as a physical looper model.
  • asynchronous motors but also DC motors can be used.
  • DC motors When using asynchronous motors, these are supplied by frequency converters, with each frequency converter containing an internal PID controller.
  • the required tensile force can be specified separately as a setpoint for the pilot train cold-strand device 7 and the tensile force for the rolling unit 4.
  • the multi-scroll smoothness system with the driver units 3, 3 ', 3 " is connected rigidly to the drive of the casting belt 1 by means of superposition transmissions (Ü), whereby very short-term fluctuations in the speed of the cast belt 5 are transferred to the multiroll smoothness system and thus none are produced short-term differential speeds between Band 5 and Multirollenglättsystem with the driver units 3, 3 ', 3 ".
  • Ü superposition transmissions
  • FIG. 2 an alternative control concept is shown. Like reference numerals correspond to like components.
  • the strip tension is measured via another load cell, which is attached to the frame of the casting unit (Castergestell).
  • the force measurement directly indicates the reaction forces of the tensile or shear forces applied to the belt.
  • This measured value is fed to a controller which directly controls the speed of an overlay motor (M).
  • FIG. 3 Another alternative is shown.
  • the reaction force of the Castergestells is measured by force cells individually or as a total force.
  • the caster frame is either on these special force measuring systems or hanging attached to these.
  • the reaction force of the Castergestells is corrected directly to 0N using the superposition drive.
  • FIG. 4 another possible alternative control concept is shown.
  • the role of Tacho T0 is used as Minilooper.
  • the roller is raised a few millimeters above the specified passline.
  • the bending of the cast strip 5 here must be kept low in order to avoid any cracking.
  • this signal is used according to the invention for controlling the superposition gearing (Ü).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
EP13765617.9A 2012-07-03 2013-07-03 Kontinuierlich arbeitende bandgiess- und walzanlage Active EP2869945B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13765617T PL2869945T3 (pl) 2012-07-03 2013-07-03 Pracująca w sposób ciągły instalacja do odlewania taśm i walcowania

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012013425.8A DE102012013425A1 (de) 2012-07-03 2012-07-03 Kontinuierlich arbeitende Bandgieß- und Walzanlage
PCT/DE2013/000383 WO2014005575A2 (de) 2012-07-03 2013-07-03 Kontinuierlich arbeitende bandgiess- und walzanlage

Publications (2)

Publication Number Publication Date
EP2869945A2 EP2869945A2 (de) 2015-05-13
EP2869945B1 true EP2869945B1 (de) 2016-11-02

Family

ID=49225979

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13765617.9A Active EP2869945B1 (de) 2012-07-03 2013-07-03 Kontinuierlich arbeitende bandgiess- und walzanlage

Country Status (9)

Country Link
US (1) US9630243B2 (ru)
EP (1) EP2869945B1 (ru)
CN (1) CN104395005B (ru)
BR (1) BR112014032671B1 (ru)
DE (1) DE102012013425A1 (ru)
ES (1) ES2613096T3 (ru)
PL (1) PL2869945T3 (ru)
RU (1) RU2603419C2 (ru)
WO (1) WO2014005575A2 (ru)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109158562A (zh) * 2018-09-30 2019-01-08 烟台金晖铜业有限公司 一种刚性接触网专用接触线及其制备方法
BR112021006560A2 (pt) * 2018-10-31 2021-07-13 Nippon Steel Corporation sistema de controle, método de controle, dispositivo de controle e programa

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51127988A (en) 1975-04-30 1976-11-08 Ishikawajima Harima Heavy Ind Co Ltd Tension control device having looper and this looper
JPS53146958A (en) * 1977-05-28 1978-12-21 Nippon Steel Corp Rolling method of steel material at high area reduction
DE2926181C2 (de) * 1978-06-29 1986-02-13 Hitachi, Ltd., Tokio/Tokyo Vorrichtung zum Stranggießen
DE3422901C2 (de) * 1984-06-20 1987-02-05 Metacon AG, Zürich Verfahren zum Vergießen einer metallischen Schmelze
JPS62142004A (ja) * 1985-12-16 1987-06-25 Kawasaki Steel Corp 板厚偏差の少ない急冷薄帯の製造方法およびその設備
FR2779672B1 (fr) * 1998-06-10 2000-07-28 Pechiney Rhenalu Procede de fabrication de profiles metalliques de section polygonale par coulee continue sur roue a gorge et laminage continu
DE10137246A1 (de) 2001-07-30 2003-02-20 Siemens Ag Walzstraße
DE10206243A1 (de) * 2002-02-15 2003-08-28 Sms Demag Ag Verfahren zum Endloswalzen eines im Querschnitt als Dünnbramme bemessenen, mit Gießgeschwindigkeit erzeugten Metallstrangs, insbesondere eines Stahlstrangs, und zugehörige Stranggießmaschine
AT501044B8 (de) * 2004-10-29 2007-02-15 Voest Alpine Ind Anlagen Verfahren zum herstellen eines gegossenen stahlbandes
DE102005052774A1 (de) 2004-12-21 2006-06-29 Salzgitter Flachstahl Gmbh Verfahren zum Erzeugen von Warmbändern aus Leichtbaustahl
DE102004062636B4 (de) 2004-12-21 2007-05-24 Salzgitter Flachstahl Gmbh Einrichtung zum horizontalen Bandgießen von Stahl
ITRM20050523A1 (it) * 2005-10-21 2007-04-22 Danieli Off Mecc Processo e impianto per la produzione di nastro metallico.
DE202005021771U1 (de) 2005-12-20 2010-02-18 Salzgitter Flachstahl Gmbh Umformbarer Leichtbaustahl
DE102005062854A1 (de) 2005-12-23 2007-07-05 Salzgitter Flachstahl Gmbh Verfahren und Einrichtung zum Erzeugen von metallischen Warmbändern insbesondere aus Leichtbaustahl
DE102007057278A1 (de) * 2007-08-04 2009-02-05 Sms Demag Ag Verfahren und Vorrichtung zur Vergleichmäßigung des Wärmeübergangs eines Gussprodukts während seiner Erstattung auf dem Metalltransportband einer horizontalen Bandgießanlage
DE102007056192A1 (de) * 2007-11-21 2009-05-28 Sms Demag Ag Verfahren und Vorrichtung zum Herstellen eines Bandes aus Metall
US8852356B2 (en) 2009-03-11 2014-10-07 Salzgitter Glachstahl GmbH Method for producing a hot rolled strip and hot rolled strip produced from ferritic steel
RU2492022C2 (ru) 2009-03-11 2013-09-10 Зальцгиттер Флахшталь Гмбх Способ изготовления горячекатаной полосы
DE102009012984B4 (de) 2009-03-12 2013-05-02 Salzgitter Flachstahl Gmbh Gießdüse für eine horizontale Bandgießanlage
DE102009012985A1 (de) 2009-03-12 2010-09-23 Salzgitter Flachstahl Gmbh Gießdüse für eine horizontale Bandgießanlage
DE102009038974B3 (de) 2009-08-21 2010-11-25 Salzgitter Flachstahl Gmbh Verfahren zum Erzeugen von Warmband mittels Bandgießen mit über den Bandquerschnitt einstellbaren Werkstoffeigenschaften

Also Published As

Publication number Publication date
US9630243B2 (en) 2017-04-25
BR112014032671A2 (pt) 2017-08-01
WO2014005575A8 (de) 2014-09-12
US20150144288A1 (en) 2015-05-28
WO2014005575A2 (de) 2014-01-09
PL2869945T3 (pl) 2017-04-28
EP2869945A2 (de) 2015-05-13
DE102012013425A1 (de) 2014-01-09
CN104395005B (zh) 2016-08-24
WO2014005575A3 (de) 2014-03-06
BR112014032671B1 (pt) 2021-09-28
RU2015103226A (ru) 2016-08-20
CN104395005A (zh) 2015-03-04
ES2613096T3 (es) 2017-05-22
RU2603419C2 (ru) 2016-11-27

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