EP3027331A1 - Installation de laminage de coulée continue et procédé de fabrication de brames - Google Patents

Installation de laminage de coulée continue et procédé de fabrication de brames

Info

Publication number
EP3027331A1
EP3027331A1 EP14747587.5A EP14747587A EP3027331A1 EP 3027331 A1 EP3027331 A1 EP 3027331A1 EP 14747587 A EP14747587 A EP 14747587A EP 3027331 A1 EP3027331 A1 EP 3027331A1
Authority
EP
European Patent Office
Prior art keywords
mill
slabs
casting
steckel
cast
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
EP14747587.5A
Other languages
German (de)
English (en)
Other versions
EP3027331B1 (fr
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
Original Assignee
SMS Group 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 Group GmbH filed Critical SMS Group GmbH
Publication of EP3027331A1 publication Critical patent/EP3027331A1/fr
Application granted granted Critical
Publication of EP3027331B1 publication Critical patent/EP3027331B1/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
    • B21B1/466—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.
  • Cast rolling with strip casting machines are known in the art in principle. A comprehensive overview of the basics of strip casting, which is still valid today, can be found in the article by Spitzer et al., Development status in the DSC strip casting process, Stahl and Eisen 121 (2001) No. 5.
  • DSC stands for Direct Strip Casting. From this article strip casting machines are known with a cooled conveyor belt and wherein the range from the steel task to hot rolling is housed, so that a protective gas atmosphere can be adjusted.
  • the casting machine described there has a casting speed of up to 60 m / min. and produces a cast strand with a casting thickness of 8 to 15 mm.
  • the strip casting machine downstream is a roller table and after the roller table follows a continuous in-line rolling. The rolling stand allows a reduction in thickness z. B. to 8 mm. After rolling, the steel strip is wound into a coil. Further state of the art casting toggle systems with strip casting found for. In DE 197 58 108 C1 or in WO 201 1/061262 A
  • WO 2010/066412 A1 discloses a casting and rolling plant 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 is that the slab in the rolling mill can only be subjected to a single pass and thus only a reduction in thickness before it is wound up as a pre-strip on the reel.
  • the invention has the object, a casting and a method for producing slabs with the help of a strip casting machine in such a way that the casting rolling mill can be made more compact and that in the manufacturing process time and energy can be saved.
  • the object is achieved by the device technology by the claimed in claim 1 casting rolling.
  • the word “G manstrang” is used for the cast product between the mold and the scissors
  • the word “slab” for the cast product between the scissors and the Steckel mill
  • the word “Vorband” for the cast product between the Steckel mill and the reel
  • the claimed system design offers the advantage that the slabs can be introduced directly into the Steckel mill downstream of the temperature homogenizer, where they can be subjected to a first pass without the slabs being wound up beforehand Pre-scaffolding is not foreseen and is not required
  • the plant can be made more compact and investment costs can be saved
  • this system concept is very energy efficient, because no appreciable temperature losses occur between the temperature homogenizer and the Steckel mill, for example, by interim storage or wrapping of coils, as is known from 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 subsequent stitch.
  • the winding furnace arranged upstream is not designed to receive the slabs, for example, from the temperature homogenizing device. He has for this purpose no second winding device or no second station, which would allow the winding of the slabs from the temperature homogenizer and which would further allow the implementation of the coils 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 above object of the invention is further achieved by the method claimed in claim 9.
  • the advantages of this process solution correspond to the advantages mentioned above with respect to the claimed cast roll mill.
  • 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.
  • the invention is a total of 2 figures attached, wherein
  • FIG. 1 shows the cast roll mill according to the invention
  • FIG. 2 shows the strip casting machine according to the invention in detail.
  • FIG. 1 shows the casting and rolling plant 100 according to the invention. It comprises a melt feeding system 105, a strip casting machine 10, a multi-roll smoothing device 120, a shear 130, a temperature homogenizing furnace 140, optionally an induction heating device 150, a roller table 155, a Steckel rolling mill 160, a cooling section 170 and, for example, a reeling device 180.
  • 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 gravity on the conveyor belt 1 18, see Figure 2, the strip casting machine 1 10 performs.
  • a fill level measuring system ensures a constant melt level in the melt container and thus a constant flow of melt to the strip casting machine 10.
  • the distribution of the melt over the casting width takes place via flow guidance elements (not shown in FIG. 1) 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 1 18 of the strip casting machine 10.
  • the strip casting machine 10 as shown in FIG. 2, consists essentially of the optionally textured or coated transport belt 1 18 revolving around three rollers.
  • the transport belt 118 is preferably made of steel with a thickness of less than 3 mm.
  • the smaller of the three rollers 1 15 shown in Figure 2 ensures a uniform tension of the tape.
  • the laterally delimiting the strip caster take over two horizontally encircling water-cooled dam block chains, not shown in FIG.
  • the conveyor belt is cooled from below via spray nozzles, also not shown in FIG. 2, in the melt feed region with specific water-loading densities between 80 and 300 l / s / m 2 .
  • the spray-cooling container which is arranged almost airtight beneath the belt and comprises the rollers 15 and support grids, 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 1 15th
  • the strip casting machine 1 10 according to the invention has a strip contact length of less than 7.5 m, wherein the strip contact length is measured as the distance between the centers of the two large rollers 1 15.
  • the realized with the strip casting machine 1 10 casting speeds are, depending on the casting thickness between 5 and 25 m / min.
  • the strip casting machine 1 10 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 homogenizer 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, are transported directly into the Steckel mill 160, substantially without loss of time and energy or 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

L'invention concerne une installation de laminage de coulée continue comprenant une machine de coulée en bande et un procédé de fabrication de pré-feuillards. Outre la machine de coulée en bande pour couler une barre de coulée, l'installation de laminage de coulée continue comprend une cisaille (130) pour découper la barre de coulée en brames de longueur prédéterminée, un dispositif d'homogénéisation de température (140) ainsi qu'un laminoir Steckel pour laminer des brames en pré-feuillards d'une épaisseur prédéterminée. Pour pourvoir construire l'installation de laminage de coulée continue et concevoir en même temps le procédé de fabrication dans le but de faire des économies de temps et d'énergie, selon l'invention un dispositif de lissage à rouleaux multiples (120) est disposé dans l'installation de laminage de coulée continue entre la sortie de la machine de coulée en bande (110) et le dispositif d'homogénéisation de température (140) et un train de rouleaux est prévu entre la sortie du dispositif d'homogénéisation de température et le laminoir Steckel pour amener les brames directement dans le laminoir Steckel (160).
EP14747587.5A 2013-07-30 2014-07-29 Installation de laminage de coulée continue et procédé de fabrication de brames Active EP3027331B1 (fr)

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 (fr) 2013-07-30 2014-07-29 Installation de laminage de coulée continue et procédé de fabrication de brames

Publications (2)

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

Family

ID=51266307

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14747587.5A Active EP3027331B1 (fr) 2013-07-30 2014-07-29 Installation de laminage de coulée continue et procédé de fabrication de brames

Country Status (4)

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

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 (fr) * 2020-09-24 2023-07-19 Primetals Technologies Austria GmbH Installation combinée de coulée et de laminage et procédé de fonctionnement de l'installation combinée de coulée et de laminage

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
US20120024434A1 (en) 2008-12-09 2012-02-02 Rolf Franz Method for producing strips of metal, and production line for performing the method
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
See references of WO2015014864A1 *

Also Published As

Publication number Publication date
DE102013214940A1 (de) 2015-02-05
EP3027331B1 (fr) 2017-03-01
WO2015014864A1 (fr) 2015-02-05
CN105473247A (zh) 2016-04-06

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