EP1897636A1 - Installation et procédé de coulée continue - Google Patents

Installation et procédé de coulée continue Download PDF

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Publication number
EP1897636A1
EP1897636A1 EP06405379A EP06405379A EP1897636A1 EP 1897636 A1 EP1897636 A1 EP 1897636A1 EP 06405379 A EP06405379 A EP 06405379A EP 06405379 A EP06405379 A EP 06405379A EP 1897636 A1 EP1897636 A1 EP 1897636A1
Authority
EP
European Patent Office
Prior art keywords
strand
guide rollers
casting
continuous casting
spraying
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
EP06405379A
Other languages
German (de)
English (en)
Other versions
EP1897636B2 (fr
EP1897636B1 (fr
Inventor
Christian Dratva
Franz Kawa
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 Concast AG
Original Assignee
Concast 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=37770285&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1897636(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to PL06405379T priority Critical patent/PL1897636T3/pl
Priority to EP06405379.6A priority patent/EP1897636B2/fr
Priority to PT06405379T priority patent/PT1897636E/pt
Priority to ES06405379.6T priority patent/ES2331532T5/es
Priority to DE502006004250T priority patent/DE502006004250D1/de
Application filed by Concast AG filed Critical Concast AG
Priority to SI200630434T priority patent/SI1897636T1/sl
Publication of EP1897636A1 publication Critical patent/EP1897636A1/fr
Publication of EP1897636B1 publication Critical patent/EP1897636B1/fr
Application granted granted Critical
Publication of EP1897636B2 publication Critical patent/EP1897636B2/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/20—Controlling or regulating processes or operations for removing cast stock
    • B22D11/208—Controlling or regulating processes or operations for removing cast stock for aligning the guide rolls
    • 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
    • B22D11/1226—Accessories for subsequent treating or working cast stock in situ for straightening 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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
    • B22D11/225—Controlling or regulating processes or operations for cooling cast stock or mould for secondary cooling

Definitions

  • the invention relates to a continuous casting plant, in particular for steel long products, according to the preamble of claim 1 and a process for continuous casting according to the preamble of claim 13.
  • the liquid metal eg. As the liquid steel, filled in a cooled mold and continuously led away from this mold with shell formation as Giessstrang continuously.
  • This Giessstrang is by a further cooling device, a so-called secondary cooling, along a successively arranged guide rollers guided guideway and thereby further cooled by applying with coolants (spraying of water, water-air mixture) and contact with the guide rollers and by a radiation of heat.
  • the cooling nozzles must be accurately positioned and aligned and have the same spray characteristics, but on the other hand, an exact guidance of the casting strand along its guideway is important. As soon as an unbalanced temperature field is established in the cast strand for some reason, the strand tends to be deformed due to thermal deformation from the guideway, e.g. sideways dodge. This shift leads immediately to uneven coolant-impingement and thus further displacement of the strand from its desired position.
  • the problem is particularly critical when small-sized strands (billets, about 100-160 mm square) are poured using high-intensity spray water cooling, so-called hard cooling. Furthermore, when cast billet strands for lifting the strand come from its arcuate guideway when increased frictional forces occur in the mold area, while the relatively flexible strand is quasi stretched.
  • guide rollers which are fixed or compliant (via spring assemblies, compressed air bellows, etc.) are mounted at a predetermined minimum distance from the strand, the compliant design is practically only used on the strand top.
  • the present invention has for its object to provide a continuous casting of the type mentioned above and to propose a method for continuous casting in particular steel, with which the quality of the cast strand can be significantly improved by a precise, with respect to the strand cross-section symmetrically distributed cooling.
  • the non-productive time should be reduced when changing the casting plant to another casting format and maintenance.
  • the other guide rollers are adjustable in a direction substantially perpendicular to the corresponding Giessstrang inhabit and the contact pressure of the respective roller is adjustable to the casting strand, it is ensured that the guide rollers constantly run through the clamping of the strand and the casting strand is held in its desired position in the guideway.
  • the risk of thermal overloading of the rollers and damage to the strand surface is significantly reduced and ensures symmetrical cooling.
  • the contact pressure of the strand to the centering rollers can be measured and a signal derived therefrom can be delivered to a control device.
  • a targeted change in the cooling can be carried out locally, for example on a specific strand side, so that a centric strand run is achieved virtually on the thermal path.
  • the continuous casting plant according to the invention makes it possible to cast strands of various sizes without impairing the availability of the plant, since the respective change of the guide rollers and / or the spraying organs or a manual, new positioning of the same is superfluous.
  • the centric strand guidance guarantees high production quality in all strand formats and the changeover times are considerably shortened.
  • a continuous casting plant comprises a mold 1, into which the liquid metal, in particular steel, is filled and continuously removed from below this water-cooled mold 1 with the formation of a shell as cast strand 2.
  • This casting strand is passed through a further cooling device, a so-called secondary cooling, and thereby further cooled.
  • support rollers and spray elements 4 can be installed on the mold outlet as so-called foot roller stands or support segments. These are format-dependent and are replaced with the casting mold each time with the mold.
  • the cooling device comprises a plurality of spray modules 3 arranged one behind the other, in which the guided along a guideway Giessstrang 2 with coolants, usually with water or a water-air mixture is applied.
  • each cooling module 3 is equipped with a multiplicity of spray nozzles 5 designed as spray elements, which are preferably mounted in water-conducting spray mats 7.
  • the spray mats 7 are controlled via an adjusting member 6 substantially concentric to the cast strand axis adjustable.
  • sliding arms 6a are advantageously provided for the spray mats 7 at the inner or outer radius of the strand, or corresponding pivot arms 6b for lateral spray mats 7.
  • a drive 6c connected to the sliding arms 6a or the swivel arms 6b is provided for this adjusting element 6.
  • the strand without spray cooling, d h. be essentially cooled only by means of water-cooled rollers. It is all the more important in this case that the strand remains constantly in contact with all the guide rollers.
  • the casting strand 2 passes through a plurality of successively arranged centering modules 10, each of which has a fixed, the target course of the guideway defining roller 11 for a strand side 2a and other guide rollers for the other strand sides.
  • these further guide rollers 12, 13, 14 are arranged adjustable in a direction substantially perpendicular to the corresponding casting strand surfaces 2b, 2c, 2d independently of the casting strand cross-sectional shape (square, rectangle, round, double-T, etc.), as will be described below.
  • the respective centering module 10 has a stationary frame 20.
  • One of the other guide rollers, the upper guide roller 12, is held by a bracket 20 pivotally mounted, bow-shaped holder 22 worn, such that it can be adjusted during its pivoting relative to the fixed mounted roller 11 and thereby pressed onto the strand side 2b.
  • the pivoting of the holder 22 is preferably accomplished by means of an apparent from Fig. 2 hydraulic cylinder 25 via a rotatably connected to a pivot shaft 21 lever 26. When adjusting the hydraulic cylinder 25 and the lever 26, the pivot shaft 21 and with it also the bow-shaped holder 22 is pivoted accordingly.
  • the two other lateral guide rollers 13, 14 are each supported by a respective fixed frame axis 31, 32 pivotable, sleeve-shaped part 33, 34, via two associated with the respective part flange 33a, 34a, in which the rollers are mounted ,
  • the two sleeve-shaped parts 33, 34 are rotatably connected to each other via intermeshing tooth segments 35, 36.
  • the part 34 is actuated or pivoted by a further hydraulic cylinder 40, wherein its pivoting on the tooth segments 35, 36 is also transmitted to the other part 33, so that the two guide rollers 13, 14 via the pivotable flange 33a, 34a exclusively symmetrical to each other, ie adjusted concentrically to the desired axis of the strand guide path and can be pressed according to uniformly on the two strand side surfaces 2c, 2d.
  • the current contact pressure can be measured in the casting operation and at a pressure rise due to a thermally induced deformation of the casting strand a signal to a control device are issued, via which a targeted change in the cooling initiated and locally, for example on certain strand side, can be performed so that a centric strand run is achieved quasi on the thermal path.
  • a control or regulation of the position and / or the contact force of the guide rollers 12, 13, 14 may be provided on the casting strand (2).
  • this position and / or the contact force of the guide rollers can be set by comparing the setpoints with actual values.
  • control cylinder Under the mentioned regenerative circuit of the control cylinder is meant a circuit in which the two cylinder pressure chamber are connected via line and the active pressure force results from the rod surface and the oil pressure. Only when the strand wants to escape from the desired position increases the pressure on the piston side and the cylinder is up to a predetermined max. Force blocked.
  • the actuators preferably hydraulic cylinders 25, 40 and the control device with advantage in a water-cooled, sealed box 41 above the guide rollers housed and protected by the heat radiation and the corrosive environment.
  • the continuous casting plant according to the invention makes it possible to cast strands of various sizes without impairing the availability of the plant, since the respective change of the guide rolls or new positioning thereof is superfluous. This ensures high production quality in all strand formats.
  • the complete centering modules can be quickly installed and removed in the cooling chamber by means of special manipulators positioned outside the cooling chamber.
  • each module at the junction in the cooling chamber have a special connector unit by means of which all media and signals can be automatically connected.
  • spray nozzles according to the invention could also be provided in a special system, which are contained in a plurality of spray modules (3) arranged one behind the other and can be controlled substantially concentrically to the cast strand axis, during which the guide rollers would be arranged in the conventional sense.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP06405379.6A 2006-09-04 2006-09-04 Installation et procédé de coulée continue Not-in-force EP1897636B2 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP06405379.6A EP1897636B2 (fr) 2006-09-04 2006-09-04 Installation et procédé de coulée continue
PT06405379T PT1897636E (pt) 2006-09-04 2006-09-04 Instalação de vazamento contínuo, bem como um processo para o vazamento contínuo
ES06405379.6T ES2331532T5 (es) 2006-09-04 2006-09-04 Instalación de colada continua asi como un procedimiento para la colada continua
DE502006004250T DE502006004250D1 (de) 2006-09-04 2006-09-04 Stranggiessanlage sowie ein Verfahren zum Stranggiessen
PL06405379T PL1897636T3 (pl) 2006-09-04 2006-09-04 Instalacja do odlewania ciągłego oraz sposób odlewania ciągłego
SI200630434T SI1897636T1 (sl) 2006-09-04 2006-09-04 Naprava za kontinuirano litje in postopek za kontinuirano litje

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06405379.6A EP1897636B2 (fr) 2006-09-04 2006-09-04 Installation et procédé de coulée continue

Publications (3)

Publication Number Publication Date
EP1897636A1 true EP1897636A1 (fr) 2008-03-12
EP1897636B1 EP1897636B1 (fr) 2009-07-15
EP1897636B2 EP1897636B2 (fr) 2014-09-10

Family

ID=37770285

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06405379.6A Not-in-force EP1897636B2 (fr) 2006-09-04 2006-09-04 Installation et procédé de coulée continue

Country Status (6)

Country Link
EP (1) EP1897636B2 (fr)
DE (1) DE502006004250D1 (fr)
ES (1) ES2331532T5 (fr)
PL (1) PL1897636T3 (fr)
PT (1) PT1897636E (fr)
SI (1) SI1897636T1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009089843A1 (fr) * 2008-01-14 2009-07-23 Concast Ag Système de coulée continue, en particulier de produits allongés en acier, et procédé de coulée continue
CN110935855A (zh) * 2018-09-25 2020-03-31 首要金属科技奥地利有限责任公司 带有弹性地支承的支撑辊的辊支架

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57130752A (en) * 1981-02-03 1982-08-13 Sumitomo Heavy Ind Ltd Continuous casting machine
DE3305660A1 (de) * 1982-02-19 1983-09-08 Hitachi, Ltd., Tokyo Verfahren und vorrichtung zum korrigieren der kontur eines strangs fuer eine stranggussanlage
DE10051959A1 (de) * 2000-10-20 2002-05-02 Sms Demag Ag Verfahren und Vorrichtung zum Stranggießen und anschließendem Verformen eines Gießstranges aus Stahl, insbesondere eines Gießstranges mit Blockformat oder Vorprofil-Format

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3117500C2 (de) * 1981-05-02 1986-04-10 Mannesmann AG, 4000 Düsseldorf Transport- und Richtmaschine einer Stranggießanlage
DE3230573C2 (de) * 1981-08-18 1986-04-03 Nippon Steel Corp., Tokio/Tokyo Vorrichtung zum Stranggießen von Stahl
DE10319863B4 (de) * 2003-05-03 2021-07-01 Sms Group Gmbh Stützrollengerüst für Knüppel-, Vorblock-, Block-, Vorprofil-, Dünn- und Brammen-Stranggießmaschinen, zum Gießen von flüssigen Metallen, insbesondere von flüssigen Stahlwerkstoffen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57130752A (en) * 1981-02-03 1982-08-13 Sumitomo Heavy Ind Ltd Continuous casting machine
DE3305660A1 (de) * 1982-02-19 1983-09-08 Hitachi, Ltd., Tokyo Verfahren und vorrichtung zum korrigieren der kontur eines strangs fuer eine stranggussanlage
DE10051959A1 (de) * 2000-10-20 2002-05-02 Sms Demag Ag Verfahren und Vorrichtung zum Stranggießen und anschließendem Verformen eines Gießstranges aus Stahl, insbesondere eines Gießstranges mit Blockformat oder Vorprofil-Format

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009089843A1 (fr) * 2008-01-14 2009-07-23 Concast Ag Système de coulée continue, en particulier de produits allongés en acier, et procédé de coulée continue
CN110935855A (zh) * 2018-09-25 2020-03-31 首要金属科技奥地利有限责任公司 带有弹性地支承的支撑辊的辊支架
WO2020064448A1 (fr) * 2018-09-25 2020-04-02 Primetals Technologies Austria GmbH Support à rouleaux doté de rouleaux de soutien montés par voie élastique
JP2022502266A (ja) * 2018-09-25 2022-01-11 プライメタルズ・テクノロジーズ・オーストリア・ゲーエムベーハー 弾性的に取り付けられた支持ロールを有している圧延スタンド
US11660665B2 (en) 2018-09-25 2023-05-30 Primetals Technologies Austria GmbH Roller stand having elastically mounted supporting rollers

Also Published As

Publication number Publication date
ES2331532T3 (es) 2010-01-07
PL1897636T3 (pl) 2010-01-29
DE502006004250D1 (de) 2009-08-27
ES2331532T5 (es) 2014-11-04
PT1897636E (pt) 2009-10-20
EP1897636B2 (fr) 2014-09-10
EP1897636B1 (fr) 2009-07-15
SI1897636T1 (sl) 2009-12-31

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