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WO2012139968A1 - Procédé et installation de coulée continue verticale permettant de produire des brames épaisses à partir d'une masse de métal fondu - Google Patents

Procédé et installation de coulée continue verticale permettant de produire des brames épaisses à partir d'une masse de métal fondu Download PDF

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Publication number
WO2012139968A1
WO2012139968A1 PCT/EP2012/056285 EP2012056285W WO2012139968A1 WO 2012139968 A1 WO2012139968 A1 WO 2012139968A1 EP 2012056285 W EP2012056285 W EP 2012056285W WO 2012139968 A1 WO2012139968 A1 WO 2012139968A1
Authority
WO
WIPO (PCT)
Prior art keywords
strand
vertical
driver
steel strand
steel
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.)
Ceased
Application number
PCT/EP2012/056285
Other languages
German (de)
English (en)
Inventor
Axel Bekurts
Winfried Binder
Christian Geerkens
Lothar Schaps
Dirk Austermann
Volker Mers
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 Siemag AG
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
Priority to CN201280018142.XA priority Critical patent/CN103648687B/zh
Priority to RU2013150511/02A priority patent/RU2563388C2/ru
Priority to EP12714654.6A priority patent/EP2697010B1/fr
Publication of WO2012139968A1 publication Critical patent/WO2012139968A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B22D11/141—Plants for continuous casting for vertical 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
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1281—Vertical removing

Definitions

  • the invention relates to a method for producing thick slabs from a metallic melt on a vertical caster, wherein a steel strand with still liquid core poured in a vertical mold, in a subsequent, several strand guide segments having therein at least some driven and / or adjustable strand guide rollers
  • the invention further relates to a vertical caster for
  • Chill mold cavity a first segment mechanically fixed in thickness, two hydraulically actuated follower segments and five segments suitable for hydraulic soft reduction.
  • Strand guide segments allow variable strand guidance with dynamic sub-load adjustment and soft-reduction zone adjustment to optimally reduce the strand at any time and under all casting conditions and to meet the segregation minimization requirements.
  • a vertical caster of the type mentioned is known. With such a system, it is possible to avoid problematic bending, especially in slabs or steel strands thicker than 300 mm.
  • Such a vertical strand guide is suitable at casting speeds of about 0.3 to 0.4 m / min. to produce up to 400 mm thick slabs or steel strands until the final solidification crack-free.
  • the invention has for its object to provide a generic method and a vertical caster so educate that regardless of the resulting Warmstrangtemperaturprofil in the individual sections of the strand guiding devices to the discharge of the separated slab a consistent and high quality, i. concerning slab geometry, slab surface and slab internal quality, in particular also at 400 mm thickness exceeding slabs or steel strands, reach, due to the crack sensitivity or brittleness so far not with a continuous casting process, but only via block casting followed by
  • Rolling process can be produced. This in particular for the production of crack-sensitive steel grades, alloyed steels, such as drilling alloys, general and high-strength steels, acid gas-resistant tube and boiler plates and heavy plates.
  • This object is achieved by a method according to the invention that in the production of steel strands with a 300 mm lying, especially between 400 to 800 mm thickness and with format widths of 900 to 3,200 mm in a strand guide subsequent plant section without support and leadership of fürerstarrten Steel strand of it
  • Detected deviation from the vertical and the steel strand is bent back by increasing or reducing the contact forces and / or position change of the unsupported section upstream or downstream strand guide rollers in the vertical, before the steel strand has reached the separator.
  • the invention is based on the finding that in such large
  • Thickness required by the hydraulic system for the employment of the mold downstream strand guide segments for example, up to nine segments, high pressures of about 25 MPa and the force exerted by the steel strand, opposing thermal forces an emigration of the
  • Strand guide segment the unsupported plant section both upstream and downstream strand guide rollers, which may also be stored in segments, can be bent with these strand guide rollers of the steel strand with detected deviations in the vertical, before then the positioned in its uppermost position separating device, preferably a Flame cutter, has reached. If no migration or deviation is detected, these strand guide rollers hold the
  • Preferred embodiments of the invention provide that the restoring forces or the forces holding the steel strand in the vertical are applied in a drive roller unit upstream of the unsupported installation section in the casting direction and / or by a strand driver downstream of the unsupported installation section. It is within the scope of the invention that specifically only individual
  • Steel strand can be positioned changed position.
  • these are preferably the strand guide rollers of the two last roller pairs in the casting direction and / or the strand guide rollers of the roller driver advantageously having two roller pairs.
  • Driver roller unit a hard reduction can be performed so that it is in this case a driving reduction unit.
  • the steel strand becomes completely solid
  • Plant section is decoupled in the predetermined by the casting speed time window for starting the vertical continuous caster required cold run of the steel strand and discharged. The length of the unsupported
  • Plant section is designed so that at the variable casting speeds to be operated vertical caster even at the maximum casting speed, eg 0.6 to 1 m / min, the time available sufficient to decouple the cold strand of the warm steel strand and thesisletonn.
  • the strand drivers thus serve alternately once as a hot strand and once as a cold extruder driver, preferably designed as in the direction of the broad sides of the steel strand movable car.
  • Plant section a deviations of the steel strand from the vertical one
  • Direction finding measuring means is arranged, which forwards the determined actual values to a higher, central arithmetic unit for correcting the deviation by increasing or reducing the Anstelleau or position change at least some strand guide rollers that are upstream or downstream of the unsupported plant section.
  • the measuring means is designed as an acted upon by a position-controlled hydraulic cylinder multi-functional role. This is traced so that it always rests on the broad side of the steel strand, so that any deviation from the vertical direction can be determined immediately.
  • the multifunctional roll can also be used to decouple the cold strand from the cast steel strand by applying force.
  • the trained with a suitably suitable head dummy strand can be retracted from above or preferably from below into the mold.
  • the concept of the vertical continuous casting plant according to the invention provides that the unsupported plant section in the casting direction consists of driven, single-sided or double-sided driver roller pairs with the position-controlled hydraulic cylinders acting upon the driver rollers
  • Driver roller unit is upstream. Depending on the positioning of the driver roller unit or one of their strand guide or driver rollers or their employment on the steel strand of the steel strand is bent back in the vertical direction. In addition, the driver roll unit can also serve to perform a hard reduction.
  • the unsupported plant section for further supported and vertical steel strand guide in casting a at least two driven, one or two sided to be set with associated position-controlled hydraulic cylinders and / or to be acted upon by a bending force pairs of strand guide rollers
  • the strand driver is designed as orthogonal to the casting direction movable unit in the
  • Interplay with a second such orthogonal movable to the casting direction strand driver is used as a hot strip or cold extruder driver.
  • the second strand driver operates correspondingly alternately in the works as
  • a flame cutter traveling along with the steel strand is provided as a separating device.
  • the flame cutter thus shifts during the separating cut from an uppermost to a dependent on the respective slab length lowermost position.
  • a slab turner designed as a swiveling roller table is a separate one
  • the strand guide consists of a vertical mold 2, which in the casting direction according to arrow 3, a mechanically fixed in thickness first strand guide segment 4, several (for example, six to eight) hydraulically salaried strand guide segments nl to, in these strand guide segments, the strand guide rollers 5 are arranged opposite to each other, a driver roller unit 6, an unsupported, no strand guide roles exhibiting system section 7, two strand drivers 8a and 8b, which can be retracted in the interplay - as indicated by the double arrows - in the strand guide, where they take over the function as a heat drive driver, as dashed lines framed indicated, a vertically moving, trained as a flame cutter 9
  • Separator 10 and ultimately connect to take over a separated from the generated steel strand 1 1 slab length 1 1 a provided swivel gear 12.
  • the spent by the pivoting operation 12 in the horizontal slab length 1 1 a is transported by a conveyor 13 in the direction of arrow 14.
  • the unsupported system section 1 1 upstream driver roller unit 6 comprises three roller pairs 6a, 6b, 6c, each with driven
  • a measuring means 16 formed as one of a position-controlled
  • Strand driver 8a or 8b has according to the embodiment, two pairs of rollers with each driven strand guide rollers 5b, which - not shown - are also associated with position-controlled hydraulic cylinder or double cylinder. Both the measuring means 16 or its hydraulic cylinder 15 and the two lower roller pairs 6b, 6c of the driver roller unit 6 and the strand drivers 8a, 8b and the hydraulic cylinders of the strand guide rollers 5b mounted therein are connected to a central processing unit 19, as indicated by the dashed lines
  • Driver roller unit 6 or by reducing or increasing the contact forces of the strand guide rollers 5a of these pairs of rollers 6b, 6c bent back into the vertical.
  • the bending back of the steel strand 1 1 in the vertical by changing the position and / or reducing or increasing the contact forces of the strand guide rollers 5b of the unsupported system section 7th
  • the hydraulic cylinder 17 with the measuring roller 18 of the measuring means 16 is used
  • Strand guide rollers 5b of the strand driver 8a or 8b from each other may initially be sufficiently large, in particular when the steel strand 1 1 is bent back by the strand driver 8a or 8b or its strand guide rollers 5b in the vertical.
  • the controllability allows any positioning and / or role employment.
  • the dashed framed strand driver 8a is moved from its working position to its standby position shown by solid lines, while the strand driver 8b is moved to retract the cold strand 21 from the head change position shown by solid lines in the dashed framed working position until it after starting the vertical caster 1 and after the cold strand 21 was decoupled from the cast steel strand 1 1 in

Landscapes

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

Abstract

L'invention concerne un procédé et une installation de coulée continue verticale (1) permettant de produire des brames épaisses à partir d'une masse de métal fondu, lequel procédé consistant en ce qu'une barre d'acier dont le noyau est encore liquide est coulée dans une lingotière verticale (2), est acheminée dans un dispositif de guidage de barre suivant présentant plusieurs segments de guidage de barre (n1bis) dans lesquels au moins quelques rouleaux de guidage de barre (5 ; 5a, 5b) peuvent être entraînés et/ou réglés, et est divisée après solidification complète par un dispositif de séparation (10) en longueurs de brame (11a) qui sont ensuite extraites. L'invention vise à produire des barres d'acier (11) présentant une épaisseur dépassant 300 mm, en particulier comprise entre 400 et 800 mm, et des largeurs de format atteignant 900 à 3 200 mm. A cette fin, on mesure dans une partie de l'installation (7) suivant le dispositif de guidage de barre sans appui et sans guidage de la barre d'acier (11) entièrement solidifiée son écart par rapport à la verticale, et la barre d'acier est recourbée à la verticale par une augmentation ou une réduction des forces de contact et/ou un changement de la position des rouleaux de guidage (5a ; 5b) montés en amont ou en aval de la partie de l'installation sans appui (7) avant que la barre d'acier (11) n'ait atteint le dispositif de séparation (10).
PCT/EP2012/056285 2011-04-13 2012-04-05 Procédé et installation de coulée continue verticale permettant de produire des brames épaisses à partir d'une masse de métal fondu Ceased WO2012139968A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201280018142.XA CN103648687B (zh) 2011-04-13 2012-04-05 用于由金属熔融物制造厚板坯的方法和立式连铸机
RU2013150511/02A RU2563388C2 (ru) 2011-04-13 2012-04-05 Способ и вертикальная установка непрерывной разливки для изготовления толстых слябов из расплавленного металла
EP12714654.6A EP2697010B1 (fr) 2011-04-13 2012-04-05 Procédé et installation de coulée continue verticale permettant de produire des brames épaisses à partir d'une masse de métal fondu

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011016879.6 2011-04-13
DE102011016879 2011-04-13

Publications (1)

Publication Number Publication Date
WO2012139968A1 true WO2012139968A1 (fr) 2012-10-18

Family

ID=45974307

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/056285 Ceased WO2012139968A1 (fr) 2011-04-13 2012-04-05 Procédé et installation de coulée continue verticale permettant de produire des brames épaisses à partir d'une masse de métal fondu

Country Status (5)

Country Link
EP (1) EP2697010B1 (fr)
CN (1) CN103648687B (fr)
RU (1) RU2563388C2 (fr)
TW (1) TWI496633B (fr)
WO (1) WO2012139968A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013139491A1 (fr) * 2012-03-22 2013-09-26 Siemens Vai Metals Technologies Gmbh Dispositif et procédé de coulée continue d'une barre d'acier de grandes dimensions
US20160023269A1 (en) * 2013-03-15 2016-01-28 Posco Casting equipment and casting method using same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6753420B2 (ja) * 2016-02-02 2020-09-09 日本製鉄株式会社 鋳片反り検出装置、及び鋳片の反り検出方法
CN108941493A (zh) * 2018-08-30 2018-12-07 东北大学 一种实验室用小方坯立式连铸机辊列及其使用方法

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JP2000015413A (ja) * 1998-06-30 2000-01-18 Nkk Corp 厚鋼板用大断面鋳片の連続鋳造方法
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WO2009141207A1 (fr) * 2008-05-20 2009-11-26 Siemens Vai Metals Technologies Gmbh & Co Procédé et installation de coulée continue pour la fabrication de brames épaisses
WO2010057967A1 (fr) * 2008-11-20 2010-05-27 Siemens Vai Metals Technologies Gmbh & Co Procédé et installation de coulée continue pour la production de brames épaisses
DE202010015499U1 (de) 2009-12-14 2011-03-03 Siemens Vai Metals Technologies Gmbh Stranggießanlage zum Erzeugen eines Gießstrangs

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WO2009141207A1 (fr) * 2008-05-20 2009-11-26 Siemens Vai Metals Technologies Gmbh & Co Procédé et installation de coulée continue pour la fabrication de brames épaisses
WO2010057967A1 (fr) * 2008-11-20 2010-05-27 Siemens Vai Metals Technologies Gmbh & Co Procédé et installation de coulée continue pour la production de brames épaisses
DE202010015499U1 (de) 2009-12-14 2011-03-03 Siemens Vai Metals Technologies Gmbh Stranggießanlage zum Erzeugen eines Gießstrangs

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013139491A1 (fr) * 2012-03-22 2013-09-26 Siemens Vai Metals Technologies Gmbh Dispositif et procédé de coulée continue d'une barre d'acier de grandes dimensions
US20160023269A1 (en) * 2013-03-15 2016-01-28 Posco Casting equipment and casting method using same
EP2974810B1 (fr) 2013-03-15 2018-07-25 Posco Équipement de coulage et procédé de coulage utilisant celui-ci

Also Published As

Publication number Publication date
CN103648687A (zh) 2014-03-19
EP2697010A1 (fr) 2014-02-19
RU2013150511A (ru) 2015-05-20
RU2563388C2 (ru) 2015-09-20
TWI496633B (zh) 2015-08-21
EP2697010B1 (fr) 2015-06-10
TW201244849A (en) 2012-11-16
CN103648687B (zh) 2016-11-16

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