EP1249287B1 - Procédé et dispositif de démarrage d'une installation de coulée continue - Google Patents

Procédé et dispositif de démarrage d'une installation de coulée continue Download PDF

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Publication number
EP1249287B1
EP1249287B1 EP02006260A EP02006260A EP1249287B1 EP 1249287 B1 EP1249287 B1 EP 1249287B1 EP 02006260 A EP02006260 A EP 02006260A EP 02006260 A EP02006260 A EP 02006260A EP 1249287 B1 EP1249287 B1 EP 1249287B1
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EP
European Patent Office
Prior art keywords
strand
cold
hot
strip
head
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.)
Expired - Lifetime
Application number
EP02006260A
Other languages
German (de)
English (en)
Other versions
EP1249287A1 (fr
Inventor
Winfried Binder
Hans-Peter Kaiser
Wolfgang Schmitz
Christian Fluck
Peter Schmidt
Peter Boese
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 Demag AG
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Filing date
Publication date
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1249287A1 publication Critical patent/EP1249287A1/fr
Application granted granted Critical
Publication of EP1249287B1 publication Critical patent/EP1249287B1/fr
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
    • B22D11/08—Accessories for starting the casting procedure
    • B22D11/081—Starter bars
    • B22D11/083—Starter bar head; Means for connecting or detaching starter bars and ingots

Definitions

  • the invention relates to a method for starting a continuous casting, in particular for steel, comprising a mold with a closable this start-cold strand head on a cold run chain in conjunction with a strand guide and means for Ausfördem a hot strand from the mold and for separating the connection between the cold strand chain and the hot strand and its promotion.
  • the invention also relates to a device for carrying out the method.
  • the mold In continuous casting, especially for casting steel, the mold is closed with a cold extrusion head at the beginning of a casting process.
  • parts of the cold extrusion head are encapsulated by the steel, resulting in a load-bearing connection between the head and casting strand.
  • the cold extrusion head attached to a chain together with the cast casting strand is discharged downwards out of the mold by means of the strand guide.
  • the cold strand chain is guided and transported by rollers.
  • cold strand head and hot strand are separated from each other.
  • the separation can be done in different ways.
  • the cold strand head has a claw-like depression, which is poured out when casting with steel becomes.
  • a hook-shaped connection between the cast hot strand and the cold strand head wherein at the end of the strand guide the hook-shaped connection by levering, for example. Pulling up the cold strand chain, separated.
  • connection must be designed so that on the one hand sufficient tensile and compressive forces between the hot strand and cold strand are transmitted, on the other hand, a secure separation between the two parts is guaranteed. In practice, therefore, it often happens that the design of the hook-shaped connection leads to difficulties in notching. Also, the bearings of the strand guide rollers are heavily loaded when pulling the chain through the cast connection - hot strand / Kaltstrang-.
  • the document DE-OS 1 921 312 A1 describes a method and apparatus for continuous casting of steel, wherein the lower opening of a cooled continuous casting mold closed at the start of casting by a dummy head, liquid steel introduced into the mold, after solidification of the steel, a pull-out enabling connection between the dummy head and the resulting strand in the mold formed, the strand is further cooled, discharged and its connection with the Anfahrkopf is released.
  • the Anfahrkopf partially encapsulated with the introduced steel in a rotational and / or tilting permitting form formed a positive connection for pulling, rotated to release the connection of the Anfahrkopf and / or with its longitudinal axis is tilted out of the direction of the strand longitudinal axis and removed with complete separation from the strand from the conveying direction.
  • the document DE 196 43 259 C1 describes a starting head for strip casting. This consists of two detachable sections, a Ang manabsacrificing and a connecting portion to the dummy bar, which are positively connected in the conveying direction, wherein the connection is solvable by tilting .. Between the sections a parallel to the conveying direction of resilient element is positively and positively arranged.
  • the publication DE 32 30 183 A1 discloses a starter train for a continuous casting plant, wherein the starter train has substantially three areas.
  • the first area is molded parts to which a hot strand can be cast. This area has a seal to prevent the escape of molten steel when casting the hot strand from the mold.
  • a middle region in the form of a dummy head adjoins this first region, on the front side of which the seal of the first region is pressed by means of a tensioning device.
  • the tensioning device consists of a rod in the form of a tie rod, which has at its other end a thread for a clamping nut, with the aid of which the seal can be pressed against the opposite end face of the Anfahrkopfes.
  • a third area is in shape a launch bar coupled to the Anfahrkopf.
  • the cast hot strand is pulled out by means of the Anfahrstange from the mold.
  • the starting rod (3rd area) is separated from the starter strand head (2nd area) by knocking out a bolt.
  • the Anfahrstrangkopf can be separated from the hot strand by the clamping nut is unscrewed. The first portion of the Anfahrstrangs, ie the molded parts with the seal, remain in the hot strand and are lost.
  • the present invention seeks to provide an alternative connection between the moldings and the seal to which the hot strand is cast, and the start-cold strand head, on the one hand, the transfer of sufficient tensile and compressive forces between allows the hot rod and the cold strand and on the other hand ensures a secure separation between the hot strand and the dummy strand without time-consuming rework.
  • This object is achieved by the subject-matter claimed in claim 1.
  • This object is characterized in that a Kaltstrangkette connecting the start-cold strand head with a strand guide is provided for conveying a casted on the moldings hot strand of the mold, that the tie rods have at their opposite ends of the mold hinge pin and that the cold strand head cylindrical recesses for receiving has the hinge pin and is pivotable about at least 90 degrees around the hinge pin for separating the hot strand, as a result of which the start-cold strip with the cold strand chain of the hinge pin and thus dissolves from the hot strand.
  • connection between hot strand and cold strand advantageously allows that on the one hand sufficient tensile and compressive forces between the hot rod and the dummy bar can be transmitted and on the other hand, but also a safe and time-saving separation between the two strands is guaranteed.
  • the cold strand head is pivoted about a pivot point to the discharge direction for connecting the cold strand chain with the hot strand during casting and for separating the hot strand from the dummy strand.
  • the above object of the invention is further achieved by a method for operating the device according to the invention.
  • the advantages of this method correspond to the advantages mentioned above with respect to the device.
  • FIG. 1 The synopsis of Figures 1 and 2 shows that the cold extrusion chain 1 is connected via a locking pin 2 with the cold strand head 3 of the cold run chain.
  • the cold strand head 3 has a cylindrical recess 4, in which a provided with a tie rod 5 hinge pin 6 is rotatably mounted. At one end 7 of the tie rod 5 is a thread which serves to fix different moldings 8.
  • a clamping disc 10 Associated with the molded parts, which prevents molten steel from flowing out of the mold during casting.
  • the cold strand head 3 is formed with its recesses 4 such that the pivotally mounted therein pivot pin 6 can be pivoted by at least 90 ° relative to the cold rod head.
  • the cold extrusion head 3 with the molded parts 8 and the sealing disk 10 is moved from below into the mold so far that the pouring opening of the mold is hermetically sealed.
  • the molded parts 10 are poured, so that a physical connection between the cold strand head 3 and the hot strand 9 is formed.
  • the hot strand 9 is continuously discharged together with the cold strand 1, in the casting direction X and supported by the strand guide.
  • the beginning of the hot strand 9 with the fastening parts 5, 6, 7, 8 and with the sealing disc 10 remains on the hot strand. These parts are later separated from the hot strand.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Continuous Casting (AREA)
  • Control Of Turbines (AREA)

Claims (2)

  1. Dispositif de démarrage d'une installation de coulée continue, avec une lingotière, notamment pour la coulée d'acier, comprenant :
    une tête de fausse barre de démarrage (3) pour fermer la sortie de la lingotière ;
    des tirants d'ancrage (5) sur les extrémités saillant dans l'orifice d'entrée de la lingotière desquels sont fixées des pièces moulées (8) ; et
    au niveau des pièces moulées, au moins une rondelle d'étanchéité (10) étant insérée de sorte à éviter une coulée de masse d'acier fondue, caractérisé en ce que,
    une chaîne de fausse barre (1) reliant la tête de fausse barre de démarrage (3) avec un guidage de la barre est prévue pour le transport hors de la lingotière d'une barre chaude (9) coulée sur les pièces moulées (8) ;
    les tirants d'ancrage (5) comportent sur leurs extrémités opposées aux pièces moulées des axes d'articulation (6) ;
    la tête de fausse barre de démarrage (3) comporte des évidements cylindriques (4, 11) pour loger les axes d'articulation (6)
    et pour sectionner la barre chaude (9), elle est susceptible de pivoter d'au moins 90° autour des axes d'articulation (6), suite à quoi, la fausse barre de démarrage (3) avec la chaîne de fausse barre (1) se détache des axes d'articulation (6) et donc de la barre chaude (9).
  2. Procédé pour faire fonctionner un dispositif selon la revendication 1, caractérisé par les étapes suivantes :
    fermeture de la sortie inférieure de la lingotière avec les pièces moulées (8) et la rondelle d'étanchéité (10), les pièces moulées et la rondelle d'étanchéité étant soutenues via les tirants d'ancrage (5) intercalés par la tête de fausse barre de démarrage (3) ;
    enrobage par coulée des pièces moulées (8) et de la rondelle d'étanchéité (10) pour créer une liaison entre la barre chaude (9) et la tête de fausse barre de démarrage (3) ;
    transport continu de la barre chaude (9) en direction de coulée (X) au moyen du guidage de barre ; et
    une fois qu'une zone de liaison barre chaude (9) / tête de fausse barre de démarrage (3) a atteint l'extrémité du guidage de barre, la chaîne de fausse barre (1) est tirée vers le haut, en direction (Y), pour faire pivoter la tête de fausse barre de démarrage (3) d'au moins 90° autour des axes d'articulation (6), suite à quoi, la fausse barre (3) avec la chaîne de fausse barre (1) se détache des axes d'articulation (6) et donc de la barre chaude (9), les tirants d'ancrage (5) restant d'abord sur la barre chaude, avec les axes d'articulation (6) et les pièces moulées et n'étant sectionnés de cette dernière que plus tard.
EP02006260A 2001-04-11 2002-03-20 Procédé et dispositif de démarrage d'une installation de coulée continue Expired - Lifetime EP1249287B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10118096 2001-04-11
DE10118096A DE10118096A1 (de) 2001-04-11 2001-04-11 Verfahren und Vorrichtung zum Anfahren einer Stranggießanlage

Publications (2)

Publication Number Publication Date
EP1249287A1 EP1249287A1 (fr) 2002-10-16
EP1249287B1 true EP1249287B1 (fr) 2007-10-17

Family

ID=7681238

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02006260A Expired - Lifetime EP1249287B1 (fr) 2001-04-11 2002-03-20 Procédé et dispositif de démarrage d'une installation de coulée continue

Country Status (3)

Country Link
EP (1) EP1249287B1 (fr)
AT (1) ATE375834T1 (fr)
DE (2) DE10118096A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2400704T3 (es) * 2008-05-23 2013-04-11 Concast Ag Sistema de obturación de cabeza de barra fría en una coquilla de una instalación de colada continua para colar perfiles preliminares de gran formato
DE202011109443U1 (de) 2011-12-23 2012-01-31 Sms Siemag Ag Vorrichtung zum Anfahren einer Stranggießanlage
AT517976B1 (de) * 2015-11-18 2019-11-15 Primetals Technologies Austria GmbH Angießvorrichtung einer Stranggießanlage und deren Betrieb
CN117380916B (zh) * 2023-12-08 2024-02-23 成都利华强磁浮连铸科技有限责任公司 一种磁悬浮连铸系统及磁悬浮连铸方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1240235B (de) * 1958-02-21 1967-05-11 British Iron Steel Research Verbindungsstueck fuer Stranggussabschnitte beim Stranggiessen
CH475049A (de) * 1968-04-29 1969-07-15 Concast Ag Verfahren und Vorrichtung zum Stranggiessen von Stahl
AT370653B (de) * 1981-09-28 1983-04-25 Voest Alpine Ag Anfahrstrang fuer eine stranggiessanlage, insbesondere eine horizontalstranggiessanlage
JPH03189056A (ja) * 1989-12-18 1991-08-19 Nippon Steel Corp 連続鋳造用ダミーバーヘッドの管理方法
DE19643259C1 (de) * 1996-10-19 1998-04-09 Preussag Stahl Ag Anfahrkopf für Bandgießanlage

Also Published As

Publication number Publication date
EP1249287A1 (fr) 2002-10-16
DE10118096A1 (de) 2002-10-17
DE50211072D1 (de) 2007-11-29
ATE375834T1 (de) 2007-11-15

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