EP2217394A1 - Procédé et dispositif destinés à la fabrication d'une bande de métal - Google Patents

Procédé et dispositif destinés à la fabrication d'une bande de métal

Info

Publication number
EP2217394A1
EP2217394A1 EP08851576A EP08851576A EP2217394A1 EP 2217394 A1 EP2217394 A1 EP 2217394A1 EP 08851576 A EP08851576 A EP 08851576A EP 08851576 A EP08851576 A EP 08851576A EP 2217394 A1 EP2217394 A1 EP 2217394A1
Authority
EP
European Patent Office
Prior art keywords
behind
mass flow
solidification
belt
maintaining
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
EP08851576A
Other languages
German (de)
English (en)
Other versions
EP2217394B1 (fr
Inventor
Rolf Franz
Olaf Norman Jepsen
Christian Mengel
Michael Breuer
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 Siemag 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 Siemag AG filed Critical SMS Siemag AG
Publication of EP2217394A1 publication Critical patent/EP2217394A1/fr
Application granted granted Critical
Publication of EP2217394B1 publication Critical patent/EP2217394B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1284—Horizontal removing

Definitions

  • the invention relates to a method for producing a strip of metal, in particular of steel, wherein liquid metal is supplied from a pouring opening of a solidification section and wherein the cast metal solidifies along the solidification section. Furthermore, the invention relates to an apparatus for producing a strip of metal.
  • This or similar components of an overall system can lead to tensile and mass flow fluctuations in the cast strip. Planting the disturbances in the direction of the liquid steel, it may lead to casting defects and negative effects of the cast strip, z. B. thickness variations, overflows, edge constrictions and band or flow rip.
  • lightweight steels which may have a very large solidification interval (ie, temperature window from the start of solidification from the melt to complete solidification and dependent zero strength or zero toughness temperatures), are additionally intolerant to tensile fluctuations also in the transport path.
  • the invention is therefore based on the object, a method of the type mentioned above and a corresponding device in such a way that it is possible to ensure even with disturbances of the type mentioned that the cast strip has a high quality.
  • the solution of this object by the invention according to the method is characterized in that liquid metal is deposited at a first location of the formed in the form of a horizontally extending conveyor element solidification line and that the solidified metal leaves the conveyor element at a nem spaced in the conveying direction second location, wherein Means are provided in the conveying direction at or behind the second location, with which the mass flow of the belt leaving the solidification section and / or the tension in the belt is maintained at a desired value.
  • the means behind the second location maintain a predetermined tension in the belt.
  • the means can maintain a temporally constant tension in the band, in particular behind the second location.
  • the proposed device for producing a strip of metal comprises a pouring opening, with which liquid metal can be fed to a solidification section, wherein the cast metal is transported on the solidification section in a conveying direction on which it solidifies.
  • the device is inventively characterized in that the Solidification distance is formed as a horizontally extending conveyor element, wherein the liquid metal can be abandoned at a first location of the solidification line, wherein the solidified metal can leave the conveyor element at a second spaced apart in the conveying direction and wherein in the conveying direction behind the second location means to maintain a desired mass flow of the belt leaving the solidification section and / or a desired tension in the belt.
  • the means for maintaining a desired mass flow may comprise at least one driver, which is arranged in the conveying direction behind a subsequent behind the second location transport path. It is provided in particular that the means for maintaining a desired mass flow comprise two drivers, between which the band can be conveyed in the form of a loop.
  • a movable roller in particular a dancer roller or a loop lifter
  • the driver is designed in the form of an S-roller set.
  • a roll of the S-roll set may be slidable in the horizontal direction.
  • At least one driver is formed by the rolls of a roll stand.
  • the means for maintaining a desired mass flow and for setting a required for the liquid feed strip tension of almost zero may further comprise at least one driver, which is arranged in the conveying direction in front of the subsequent behind the second location transport path.
  • This driver may comprise two cooperating rollers, between which the band leaving the solidification section is arranged.
  • the solidification section can be designed as a conveyor belt and the driver can be designed as a roller which presses the belt leaving the solidification section onto a deflection roller of the conveyor belt.
  • At least one further processing machine may be arranged behind the means for maintaining a desired mass flow. This is, for example, a straightening machine, a rolling mill, a pair of scissors or a reel.
  • the invention provides facilities and control concepts that largely prevent the negative repercussions from further processing on the cast strip by adjusting and maintaining constant draft and mass flow ratios. This keeps the quality of the cast strip at a high level.
  • the proposed devices and control concepts to avoid repercussions can consist of two components, namely a strip tension control in combination with a mass flow control.
  • the strip tension is preferably greater or almost zero on the transport route.
  • the device for strip tension control ensures that the tension in the area of the casting machine (ie on the solidification section) is practically zero. This is necessary because the cast strip can absorb less and less tensile force with increasing temperature and the allowable train becomes zero in the area of liquid purchasing.
  • Fig. 1 shows schematically an apparatus for producing a tape
  • FIG. 2 is a view similar to FIG. 1, with means for maintaining a desired mass flow or band in a rear region shown in more detail;
  • FIG. 3 an alternative to FIG. 2 embodiment of the device
  • FIG. 4 shows a further alternative embodiment of the device to FIG. 2, FIG.
  • FIG. 5 is a view similar to FIG. 1, with means for maintaining a desired mass flow or band in a front area shown in greater detail, FIG.
  • Fig. 8a shows the course of the tension in the band over time without the use of the proposal according to the invention
  • Fig. 8b shows the course of the tension in the band over time when using the proposal according to the invention.
  • FIG. 1 shows a device for producing a strip 1 by a casting process.
  • An essential component of the device is a solidification section 3, which is designed as a conveyor belt 18, which by means of two Um- guide rollers 13 is held in the position shown, wherein the upper side of the conveyor belt 18 is moved in a conveying direction F.
  • the material solidifies and leaves at a second location 5, the conveyor belt 18.
  • the cast strip 1 then passes through a transport path 10 to further processing machines 14, 15, 16, 17, in the present case, a straightening machine 14, a rolling mill 15, a pair of scissors 16 and a reel 17 include.
  • Core component of the present invention are means 6, 7 for maintaining a desired mass flow of the solidification line 3 leaving belt 1 and / or a desired tension in the belt 1.
  • the means 6, 7 are suitable for ensuring that regardless of the process steps that take place in the further processing machines 14, 15, 16, 17, no feedback on the process of strip casting occurs. Rather, the means 6, 7 ensure that a constant mass flow of strip is always drawn off from the solidification section 3 and that the cast strip 1 is then held along the transport path 10 under a predetermined tensile stress.
  • the means 6 arranged behind the transport path 10 have two drivers 8 and 9 which can be driven in a regulated manner, wherein a dancer roll or a loop lifter 11 is positioned between the drivers 8, 9.
  • This can deflect the band 1 in the direction of the normal N, so that the band assumes a loop-like shape.
  • the rotational drive of the drivers 8, 9 and the deflection of the dancer roller 11 it is possible to ensure that irregularities arising from the further processing machines 14, 15, 16, 17 are not transferred to the belt before the means 6. Consequently, the casting process is stabilized and homogenized, so that the casting quality is correspondingly high.
  • the strip tension and mass flow control therefore consists of a system of drivers 8, 9 and a movably mounted roller 11 (loop lifter or dancer roll). This makes it possible to run the subsequent process steps at an adjustable tension level in the belt.
  • the means 6 for decoupling is adjustable and can be adjusted constantly with the position control of the movably mounted roller 11.
  • the loop height is regulated and thus kept constant the mass flow.
  • the task of the driver 8 or 9 can optionally also be taken over by a rolling stand.
  • the driver 8 acts as a hold-down roller pair. In this case, in the region of the transport path 10, the same train as on the movable roller 11 (ski jacks, dancer roll).
  • Fig. 3 If the driver 8 is driven by a motor in speed control, a virtually any other train in the belt can be adjusted in the region of the transport path 10.
  • An alternative to Fig. 2 embodiment of the invention can be seen in Fig. 3.
  • the conveying of the belt 1 is controlled or regulated so that to compensate for nonuniformities in the mass flow, a sagging, loop-shaped section of the band 1 between the two drivers 8, 9 is used.
  • the tensile and mass torque coupling is thus achieved here by a free loop of the belt with two speed-controlled drivers 8, 9.
  • FIG. 3 In contrast to the procedure described in connection with FIG.
  • the process takes place here without an adjustable draft level, the tensile stress is very low over the entire range and results from the weight force of the sagging loop.
  • Mass flow fluctuations are compensated by a change in the loop height on the speed control of the driver 8, 9.
  • the strip tension resulting from the weight of the loop can be picked up by the variable-speed driver 8. This can be set via the driver 8, an almost arbitrary train in the transport path.
  • the function of the driver 9 can optionally be taken over again by a rolling stand.
  • Fig. 4 a further alternative can be seen.
  • the tensile and mass torque coupling is achieved by an S-roller set 8 ', 8 "(optionally coupled with a dancer roller) .
  • the lower roller 8" of the S-roller set 8', 8 " can be adjusted in the horizontal direction, which is represented by the With at least one of the speed-controlled S-rollers 8 ', 8 ", the belt tension can be regulated. If a dancer roll is additionally used, it ensures mass flow torque coupling.
  • FIGS. 5 and 6 the means 7 are shown in greater detail, which are located in the conveying direction F in front of the transport path 10.
  • the means 7 have in Fig. 5, a driver 12, which consists of two cooperating roles.
  • a driver 12 which consists of two cooperating roles.
  • For train control in the band 1 behind the casting machine (pouring opening 2 together with solidification section 3) thus serves the pair of rollers of the driver 12.
  • the two rollers of the driver 12 press with defined force on the cast strip to produce the frictional engagement. At least one of the driver rollers is speed-controlled.
  • FIG. 7 shows a further concrete embodiment of the invention.
  • a speed and Bandzugregelung on the type of solution according to the above Figures 2 and 6 is provided.
  • a combination of tension control and mass torque coupling takes place, two drivers 8 and 9 with dancer roller 11 arranged therebetween being provided in the region of the means 6;
  • a driver roller 12 is provided, which presses on a deflection roller 13 of the conveyor belt 18.
  • the drivers are speed controlled, wherein the driver 9 via the loop control (by means of the dancer roller 11) keeps the mass flow constant.
  • the positioning of the loop lifter (dancer roll 11) keeps the strip tension constant.
  • the driver 8 is speed-controlled with superimposed tension control and ensures a constantly adjustable tension level in the area of the belt transport.
  • the strip tension applied here is introduced via the resting and pressing top roller 12 into the engine torque of the top roller. While in the region of the solidification section 3 there is a strip tension of substantially zero, the strip tension in the region of the transport path 10 is significantly greater than zero. Behind the driver 8 may be an even higher train level.
  • While the drive roller 12 is speed-controlled while specifying the speed, in the case of the driver 8, a speed specification along with a belt tension input leads to a speed and drive torque and thus tension control.
  • the tension control by means of the dancer roller 11 leads to a regulation of the pivoting angle of the arm on which the dancer roll sits and thus on the regulation of the operating force of the arm to a tension control.
  • Driver 9 is speed-controlled with superimposed loop and thus mass flow control.
  • FIG. 8 shows the comparison of the time profile of the tensile stress in the band 1 in the region of the belt transport after the casting machine, in FIG. 8a for a previously known solution, in FIG. 8b for an embodiment according to the invention.
  • the effect on the tension in the belt results from the operation of a pair of scissors 16 (see Fig. 1) in the context of a further processing section.
  • the scissors 16 performs a cut, which results in a deviation from the ideal constant band movement in the band transport.
  • the scissors 16 pulls during the cut namely on the belt 1, so that without the inventive solution according to Fig. 8a high trains in the area of the belt transport occur, which can propagate in the direction of the liquid phase and lead to the problems mentioned above.
  • the strip tension can be kept almost constant with the same disturbance according to FIG. 8b. Disturbances of the casting process can be largely avoided, they are in any case significantly lower than in Fig. 8a. LIST OF REFERENCE NUMBERS

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Metal Rolling (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une bande (1) de métal, notamment en acier, selon lequel du métal liquide sortant d'un godet de chargement (2) est amené sur une ligne de solidification (3), le métal coulé se solidifiant le long de cette ligne de solidification (3). L'invention vise à obtenir une bande de qualité optimale, sans endommagements. A cet effet, le métal liquide est amené en un premier emplacement (4) de la ligne de solidification (3) se présentant sous forme d'un élément de transport s'étendant à l'horizontale, et le métal solidifié quitte l'élément de transport (3) en un deuxième emplacement (5) séparé dans le sens de transport (F), des moyens (6,7) étant disposés sur ou derrière ce deuxième emplacement (5), dans le sens de transport (F), pour maintenir le débit massique de la bande à la sortie de la ligne de solidification (3) et/ou pour maintenir la tension dans la bande à un niveau souhaité. L'invention porte également sur un dispositif destiné à la fabrication d'une bande de métal.
EP08851576.2A 2007-11-21 2008-11-13 Procédé et dispositif destinés à la fabrication d'une bande de métal Active EP2217394B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007056192A DE102007056192A1 (de) 2007-11-21 2007-11-21 Verfahren und Vorrichtung zum Herstellen eines Bandes aus Metall
PCT/EP2008/009576 WO2009065517A1 (fr) 2007-11-21 2008-11-13 Procédé et dispositif destinés à la fabrication d'une bande de métal

Publications (2)

Publication Number Publication Date
EP2217394A1 true EP2217394A1 (fr) 2010-08-18
EP2217394B1 EP2217394B1 (fr) 2019-01-09

Family

ID=40456438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08851576.2A Active EP2217394B1 (fr) 2007-11-21 2008-11-13 Procédé et dispositif destinés à la fabrication d'une bande de métal

Country Status (18)

Country Link
US (1) US8171982B2 (fr)
EP (1) EP2217394B1 (fr)
JP (1) JP5349487B2 (fr)
KR (1) KR20100080940A (fr)
CN (1) CN101952068A (fr)
AR (1) AR069395A1 (fr)
AU (1) AU2008328228B2 (fr)
BR (1) BRPI0820386A8 (fr)
CA (1) CA2706461C (fr)
DE (1) DE102007056192A1 (fr)
EG (1) EG25898A (fr)
MX (1) MX2010005510A (fr)
MY (1) MY155176A (fr)
RU (1) RU2431541C1 (fr)
TW (1) TWI381893B (fr)
UA (1) UA97710C2 (fr)
WO (1) WO2009065517A1 (fr)
ZA (1) ZA201002975B (fr)

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DE102008009902A1 (de) * 2008-02-19 2009-08-27 Sms Demag Ag Walzvorrichtung, insbesondere Schubwalzengerüst
US20120024434A1 (en) * 2008-12-09 2012-02-02 Rolf Franz Method for producing strips of metal, and production line for performing the method
DE102009030793A1 (de) * 2009-06-27 2010-12-30 Sms Siemag Ag Vorrichtung und Verfahren zum horizontalen Gießen eines Metallbandes
EP2418031A1 (fr) * 2010-08-13 2012-02-15 Siemens Aktiengesellschaft Procédé de fabrication d'une bande métallique à l'aide d'une installation de laminage par coulée, dispositif de commande et/ou de réglage pour une installation composite de laminage par coulée et installation composite de laminage par coulée
DE102012013425A1 (de) * 2012-07-03 2014-01-09 Salzgitter Flachstahl Gmbh Kontinuierlich arbeitende Bandgieß- und Walzanlage
DE102012224351A1 (de) * 2012-12-21 2014-06-26 Sms Siemag Ag Verfahren und Vorrichtung zum Wickeln eines Metallbandes
DE102016123824A1 (de) * 2016-12-08 2018-06-14 VON ARDENNE Asset GmbH & Co. KG Prozessieranordnung, Transportvorrichtung und Verfahren
CN112912189B (zh) * 2018-10-31 2022-09-27 日本制铁株式会社 控制系统、控制方法、控制装置以及程序

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Also Published As

Publication number Publication date
CN101952068A (zh) 2011-01-19
MX2010005510A (es) 2010-06-02
RU2431541C1 (ru) 2011-10-20
JP5349487B2 (ja) 2013-11-20
DE102007056192A1 (de) 2009-05-28
EG25898A (en) 2012-10-03
ZA201002975B (en) 2010-12-29
TW201002451A (en) 2010-01-16
KR20100080940A (ko) 2010-07-13
MY155176A (en) 2015-09-15
EP2217394B1 (fr) 2019-01-09
CA2706461A1 (fr) 2009-05-28
TWI381893B (zh) 2013-01-11
US8171982B2 (en) 2012-05-08
US20100252223A1 (en) 2010-10-07
BRPI0820386A8 (pt) 2016-05-03
AU2008328228A1 (en) 2009-05-28
UA97710C2 (ru) 2012-03-12
AU2008328228B2 (en) 2011-06-30
WO2009065517A1 (fr) 2009-05-28
BRPI0820386A2 (pt) 2015-05-19
CA2706461C (fr) 2013-01-08
AR069395A1 (es) 2010-01-20
JP2011504142A (ja) 2011-02-03

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