EP3027331B1 - Giesswalzanlage und verfahren zum herstellen von brammen - Google Patents

Giesswalzanlage und verfahren zum herstellen von brammen Download PDF

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Publication number
EP3027331B1
EP3027331B1 EP14747587.5A EP14747587A EP3027331B1 EP 3027331 B1 EP3027331 B1 EP 3027331B1 EP 14747587 A EP14747587 A EP 14747587A EP 3027331 B1 EP3027331 B1 EP 3027331B1
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EP
European Patent Office
Prior art keywords
casting
strip
rolling mill
slabs
steckel
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
EP14747587.5A
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German (de)
English (en)
French (fr)
Other versions
EP3027331A1 (de
Inventor
Olaf Norman Jepsen
Guido Kleinschmidt
Markus Reifferscheid
Dieter Rosenthal
Jochen Wans
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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Publication of EP3027331A1 publication Critical patent/EP3027331A1/de
Application granted granted Critical
Publication of EP3027331B1 publication Critical patent/EP3027331B1/de
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    • 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
    • B21B1/466—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 non-continuous process, i.e. the cast being cut before rolling
    • 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 casting and rolling plant with a strip casting machine and a method for producing pre-strip. Specifically, the invention relates to small caster rolling mills, so-called micromill plants, for the production of flat steel with an annual production between 350,000 and 700,000 t of carbon steel.
  • the plant concept according to the invention is characterized by low investment and production costs, rapid project implementation with a short return on investment and a compact plant layout.
  • the plant according to the invention is particularly suitable for steel producers in regions where so far no flat steel production took place and where a specialization to regional requirements should take place.
  • the WO 2010/066412 A1 a casting mill with a strip casting machine.
  • the strip casting machine follows in the casting direction a roller table with a temperature homogenization zone, a temperature setting device, a mass flow control, a second temperature setting device and a rolling stand, a pair of scissors and a reel.
  • a disadvantage of this continuous in-line rolling device that the slab in the rolling stand only one stitch and thus only a reduction in thickness can be subjected before being wound up as a pre-strip on the reel.
  • EP 1 827 720 B1 An alternative plant concept with a strip casting machine is from the European patent specification EP 1 827 720 B1 known. Specifically, this patent discloses a caster in which follow after the strip casting a temperature homogenizer, a roughing stand, a pair of scissors and a first take-up device in the casting direction. To further reduce the thickness downstream of a Steckel mill is provided in the casting direction and the Steckel rolling mill below a cooling section and finally a coiler. To operate the Steckel mill, it is necessary that the coils produced by means of the first coiler be implemented in a first winding furnace located upstream of the Steckel mill before the metal strip of the coil can first pass through the Steckel mill for a first pass.
  • German patent application DE 10 2004 057 427 A1 discloses a caster with an arcuate continuous casting machine and downstream in the casting machine unit for combined straightening and conveying the casting strand.
  • the international patent application WO 2011/158091 A2 and the European patent application EP 0 449 004 A2 each discloses a casting mill with a casting machine for casting a cast strand.
  • the casting machine is a pair of scissors arranged for dividing the casting strand in slabs of predetermined length.
  • the pair of scissors is a temperature-homogenizing device and this downstream of a Steckel mill for rolling the slabs to metal strips of predetermined thickness.
  • the invention has the object, a cast rolling and a method for producing slabs using a strip casting machine such that the casting mill can be made more compact and that in the manufacturing process time and energy can be saved.
  • the casting machine is designed as a strip casting machine with a circulating cooled conveyor belt for casting the casting strand with a casting thickness between 10 and 20 mm; that between the output of the strip casting machine and the temperature homogenizing means a Multirollenglätt noticed is arranged; and that between the exit of the temperature homogenizer and the Steckel mill a roller table is provided for feeding the slabs directly into the Steckel mill.
  • Slabs are produced by dividing the casting strand; Pre-bands are produced by reducing the thickness of the slabs with at least one stitch.
  • the claimed plant concept has the advantage that behind the temperature homogenizing device, the slabs can be introduced directly into the Steckel mill and subjected to a first pass there without previously requiring a winding of the slabs. A roughing stand is not provided and not required.
  • the system can be made more compact and investment costs can be saved.
  • this system concept is very energy efficient because no significant temperature losses occur between the temperature homogenizer and the Steckel mill, such as by interim storage or wrapping of coils, as is known in the prior art.
  • Both Steckel each have only one winding device and are each only designed to wind the pre-strip after a pass of the Steckel mill and for dispensing the pre-strip to the Steckel mill for the following stitch.
  • the upstream wind-up furnace is not designed to receive the slabs, e.g. from the temperature homogenizer. It has for this purpose no second winding device or no second station, which would allow the winding of the slabs from the temperature-homogenizing device and which would further allow the conversion of the coil thus produced for feeding the slabs to the Steckel mill.
  • the shears for dividing the cast strand cast by the casting machine into slabs of predetermined length may be disposed between the multi-roll smoother and the entrance of the temperature homogenizer or between the exit of the temperature homogenizer and the Steckel mill.
  • an induction heating device is preferably arranged for heating the slabs to a temperature suitable for the Steckel rollers.
  • the method provides that the casting strand with a casting belt speed of 5 to 25 m / min. is poured.
  • the method according to the invention and the associated cast roll plant according to the invention are in particular provided for producing carbon steel pre-strips.
  • FIG. 1 It shows the casting roll plant 100 according to the invention. It comprises, as seen in the casting direction R, a melt delivery system 105, a strip casting machine 110, a multi-roll smoothener 120, a shears 130, a temperature homogenizing furnace 140, optionally an induction heater 150, a roller table 155, a Steckel mill 160, a Cooling section 170 and, for example, a coiler 180.
  • a melt delivery system 105 a melt delivery system 105
  • strip casting machine 110 a strip casting machine 110
  • a shears 130 e.g., a temperature homogenizing furnace 140
  • optionally an induction heater 150 e.g., a roller table 155
  • a Steckel mill 160 e.g., a Steckel mill 160
  • Cooling section 170 e.g., a Cooling section 170
  • the individual components of the casting rolling mill will be described in detail at least partially.
  • the melt delivery system 105 consists essentially of a refractory lined or separately dumped position Heatable melt container, which the liquid metal, ie the melt, via a discharge nozzle using the force of gravity on the conveyor belt 118, see FIG. 2 guiding strip caster 110.
  • a level measuring system in FIG. 1 not shown, ensures a constant melt level in the melt container and thus a constant flow of melt on the strip casting machine 110.
  • the distribution of the melt over the casting width via flow guide elements (in FIG. 1 not shown) in the melt delivery system 105 or via arranged guide systems. These guide systems can conduct the melt with the aid of electromagnetic traveling fields or by the use of gas, which is passed through nozzles on the melt surface. The combination of several melt container with each other is possible.
  • the flow guidance elements also extend beyond the melt delivery system into the region of the circulating conveyor belt 118 of the strip casting machine 110.
  • the strip casting machine 110 consists, as in FIG. 2
  • the transport belt 118 is preferably made of steel with a thickness of less than 3 mm. In the FIG. 2 shown smaller of the three rollers 115 ensures a uniform tension of the band.
  • the lateral boundary of the strip casting plant is occupied by two horizontally encircling water - cooled dam block chains, in FIG. 2 Not shown.
  • the conveyor belt is from below via spray nozzles, in FIG. 2 also not shown, cooled in the melt feed area with specific watering densities between 80 and 300 l / s / m 2 . Until the belt outlet the Wasserbeetzschungsêtn be returned to values between 10 and 100 liters / sec / m 2 .
  • the belt cooling is operated with preferably> 100 m / bar negative pressure.
  • the outside prevailing air pressure thus ensures the flat pressing of the metal strip on the support means between the two large rollers 115th
  • the strip casting machine 110 according to the invention has a strip contact length of less than 7.5 m, the strip contact length being measured as the distance between the centers of the two large rolls 115.
  • the casting speeds realized with the strip casting machine 110 are between 5 and 25 m / min, depending on the casting thickness.
  • the strip casting machine 110 is the Multirollenglätt issued 120 downstream in the casting direction R.
  • the multi-roll smoothing device 120 the cast strand is guided to improve its flatness with at least three pairs of rolls 124.
  • the pairs of rollers are preferably driven individually. A reduction in the thickness of the casting strand generally does not take place in the multi-roll smoothing device.
  • the example subsequent scissors 130 cuts the cast strand in slabs of predetermined length and decouples the previous casting process from a subsequent rolling process.
  • the temperature homogenizing device 140 is arranged, which is typically designed as a tunnel furnace.
  • the inductive heating downstream of the furnace which is provided only as an option, optionally provides for an increase in the temperature of the slabs and / or for a temperature compensation over the length of the slab before the slabs enter the downstream Steckel mill (160).
  • the Steckel mill produces the desired final thickness with three, five, seven or more passes.
  • the Steckel mill (160) is followed, as already mentioned above, in the casting direction by the cooling section 170 and the reel 180 for winding the pre-strips into a collar 250.
  • the casting roll plant according to the invention thus formed has the advantage that the slabs, after passing through the temperature homogenizing device 140, can be fed directly into the Steckel rolling mill 160 without any loss of time or energy or without heat loss Perform a first pass without having to be wound up first.
  • the induction heater 150 and / or the scissors 130 are arranged between the temperature homogenizer 140 and the Steckel mill 160.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
EP14747587.5A 2013-07-30 2014-07-29 Giesswalzanlage und verfahren zum herstellen von brammen Active EP3027331B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310214940 DE102013214940A1 (de) 2013-07-30 2013-07-30 Gießwalzanlage und Verfahren zum Herstellen von Brammen
PCT/EP2014/066318 WO2015014864A1 (de) 2013-07-30 2014-07-29 GIEßWALZANLAGE UND VERFAHREN ZUM HERSTELLEN VON BRAMMEN

Publications (2)

Publication Number Publication Date
EP3027331A1 EP3027331A1 (de) 2016-06-08
EP3027331B1 true EP3027331B1 (de) 2017-03-01

Family

ID=51266307

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14747587.5A Active EP3027331B1 (de) 2013-07-30 2014-07-29 Giesswalzanlage und verfahren zum herstellen von brammen

Country Status (4)

Country Link
EP (1) EP3027331B1 (zh)
CN (1) CN105473247A (zh)
DE (1) DE102013214940A1 (zh)
WO (1) WO2015014864A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017221969A1 (de) 2017-12-05 2019-06-06 Sms Group Gmbh Verfahren und Vorrichtung zur Herstellung eines bandförmigen Verbundmaterials
EP3974072B1 (de) * 2020-09-24 2023-07-19 Primetals Technologies Austria GmbH Giess-walz-verbundanlage und verfahren zum betrieb der giess-walz-verbundanlage

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4009860C2 (de) * 1990-03-28 1999-11-18 Schloemann Siemag Ag Verfahren und Anlage zur Herstellung von warmgewalztem Stahlband, insbesondere für Edelstähle, aus bandförmig stranggegossenem Vormaterial
DE19758108C1 (de) 1997-12-17 1999-01-14 Mannesmann Ag Produktionsverfahren und -anlage zur endlosen Erzeugung von warmgewalzten dünnen Flachprodukten
DE102004057427A1 (de) * 2004-11-27 2006-06-01 Sms Demag Ag Vorrichtung und Verfahren zum Stranggießen
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
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
EP2376240B1 (de) 2008-12-09 2014-02-12 SMS Siemag AG Verfahren zum herstellen von bändern aus metall und produktionsanlage zur durchführung des verfahrens
DE102010050647A1 (de) 2009-11-21 2011-05-26 Sms Siemag Aktiengesellschaft Anlage und Verfahren zum Gießen und Walzen von Metall
IT1405453B1 (it) * 2010-06-14 2014-01-10 Danieli Off Mecc Procedimento di laminazione per prodotti piani e relativa linea di laminazione

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3027331A1 (de) 2016-06-08
CN105473247A (zh) 2016-04-06
DE102013214940A1 (de) 2015-02-05
WO2015014864A1 (de) 2015-02-05

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