DE4134159C1 - Continuous casting process of steel, for redn. of scrap - comprises pouring molten steel into open-ended mould to produce strand, then reducing cross=section - Google Patents

Continuous casting process of steel, for redn. of scrap - comprises pouring molten steel into open-ended mould to produce strand, then reducing cross=section

Info

Publication number
DE4134159C1
DE4134159C1 DE19914134159 DE4134159A DE4134159C1 DE 4134159 C1 DE4134159 C1 DE 4134159C1 DE 19914134159 DE19914134159 DE 19914134159 DE 4134159 A DE4134159 A DE 4134159A DE 4134159 C1 DE4134159 C1 DE 4134159C1
Authority
DE
Germany
Prior art keywords
continuous casting
strand
steel
casting mold
open
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 - Fee Related
Application number
DE19914134159
Other languages
German (de)
Inventor
Fritz-Peter Dr.-Ing. 4100 Duisburg De Pleschiutschnigg
Peter Dipl.-Ing. 4020 Mettmann De Wahls
Ulrich Dr.-Ing. 1000 Berlin De Siegers
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Priority to DE19914134159 priority Critical patent/DE4134159C1/en
Priority to JP29804592A priority patent/JPH05200502A/en
Application granted granted Critical
Publication of DE4134159C1 publication Critical patent/DE4134159C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10Supplying or treating molten metal
    • B22D11/11Treating the molten metal
    • B22D11/112Treating the molten metal by accelerated cooling

Landscapes

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

Abstract

In a continuous casting process for steel, molten steel is poured into an open-ended mould to produce a second which is deformed in the solidification section before through solidification is complete to reduce its cross section. After pouring has stopped, a heat-resistant tubular sleeve matching the strand shape is pressed into the open end of the mould and welded at its edge to the casting shell, so that liq. is collected within the sleeve on working e.g. rolling. ADVANTAGE - Redn. of scrap

Description

Die Erfindung bezieht sich auf ein Verfahren zum Stranggießen von Stahl in eine flüssigkeitsgekühlte, oben und unten offene Stranggießkokille, bei dem der so erzeugte Strang im Anschluß an die Stranggießkokille im Bereich der Erstarrungsstrecke vor dem Punkt der Durcherstarrung unter Verminderung seiner Querschnittsfläche verformt wird.The invention relates to a method for the continuous casting of steel in a liquid-cooled continuous casting mold open at the top and bottom, in which the strand thus produced following the continuous casting mold in Area of the solidification section before the point of solidification below Reducing its cross-sectional area is deformed.

Ein derartiges Verfahren ist für Flachprodukte, beispielsweise aus der DE 38 18 077 A1, bekannt. Bei derartigen Verfahren, insbesondere bei einer bogenförmigen Strangführung unmittelbar im Anschluß an die Stranggießkokille, ist bei jedem Gießende mit einem durch Gießwalzen unvollständig verformten Stück in der Mindestlänge der Verformungsstrecke zu rechnen, da sonst der flüssige Stahl aus dem Stranginneren infolge der Verformung zum offenen Strangende herausgequetscht werden und sich bei der vorgegebenen Geschwindigkeit über die Rollenbahn ergießen würde. Das Gießwalzgerüst mußte daher spätestens mit Schließen des Verteilerstopfens auf eine Maulweite entsprechend der Strangdicke am Kokillenaustritt auseinandergefahren werden, so daß es nur noch die Funktion eines Strangführungsgerüstes hat. Die Dicke des so entstandenen Endstückes entspricht daher nicht mehr dem für die Weiterverarbeitung vorgesehenen Strangmaß.Such a method is for flat products, for example from the DE 38 18 077 A1, known. In such methods, especially in an arcuate strand guide immediately following the Continuous casting mold, is at each end of casting with one by casting rolls incompletely deformed piece in the minimum length of the Deformation distance to be expected, otherwise the liquid steel from the Inside of the strand due to the deformation towards the open end of the strand be squeezed out and at the given speed would pour over the roller conveyor. The casting and rolling stand therefore had to at the latest when the distributor plug is closed to an internal width according to the strand thickness at the mold exit  be, so that it only functions as a strand guide Has. The thickness of the end piece thus created does not correspond more the strand size intended for further processing.

Der Erfindung liegt die Aufgabe zugrunde, die bestehenden Nachteile zu vermeiden und ein Verfahren anzugeben, daß ein im Stranggießverfahren erzeugter Strang weitestgehend der Weiterverarbeitung zugeführt werden kann.The invention has for its object to overcome the existing disadvantages avoid and specify a process that a continuous casting process generated strand are largely fed to further processing can.

Bei einem Verfahren der im Gattungsbegriff des Anspruches 1 genannten Art wird die Aufgabe erfindungsgemäß durch die Maßnahmen des kennzeichnenden Teils des Anspruches 1 gelöst. Spezifikationen der Erfindung enthalten die Unteransprüche.In a method mentioned in the preamble of claim 1 Art is the task according to the invention by the measures of characterizing part of claim 1 solved. Specifications of the Invention contain the dependent claims.

Gemäß der Erfindung wird also bei Gießende in die Stranggießkokille eine temperaturbeständige, vorzugsweise metallische, rohrförmige, dem Strangformat angepaßte Hülse eingesetzt und derart in das offene Ende (Gießkopf) des Stranges eingepreßt, daß eine Kante der Hülse mit der Strangschale verschweißt. Das bislang gegossene und noch in der Stranggießmaschine befindliche Material kann jetzt weiterhin gießgewalzt werden, wobei sich das dadurch herausgedrückte flüssige Metall in der Hülse sammelt. Die aus einem Stahlblech gefertigte Hülse besteht bevorzugt aus einem artgleichen Werkstoff wie die zu vergießende Schmelze.According to the invention, therefore, at the end of the casting in the continuous casting mold temperature-resistant, preferably metallic, tubular, the Strand-adapted sleeve inserted and so in the open end (Casting head) of the strand pressed in that one edge of the sleeve with the Strand shell welded. The previously cast and still in the Continuous caster material can now continue to be cast rolled be, whereby the liquid metal thereby pressed out in the Sleeve collects. The sleeve is made of sheet steel preferably made of a material of the same type as the material to be cast Melt.

Die Vorteile vorliegender Erfindung sind darin zu sehen, daß das bisher verdickte Strangende nicht mehr als Schrott abqualifiziert werden muß, sondern störungsfrei in einen unmittelbar folgenden Weiterverarbeitungsprozeß eingeführt werden kann. Auch wird vermieden, daß sich evtl. aus dem Gießkopf herausgedrücktes Material über die Verformungs- bzw. Führungsrollen ergießt und Anlagenstillstände verursacht. Das Verfahren ist sowohl für Stränge mit rechteckigem als auch rundem oder polygonalem Querschnitt anwendbar.The advantages of the present invention can be seen in the fact that so far thickened strand ends no longer have to be classified as scrap, but trouble-free in an immediately following one Processing process can be introduced. Is also avoided that material that may have been pushed out of the pouring head over the Deformation or leadership roles pour and plant downtime  caused. The procedure is for both strands with rectangular as also round or polygonal cross section applicable.

Claims (3)

1. Verfahren zum Stranggießen von Stahl in eine flüssigkeitsgekühlte, oben und unten offene Stranggießkokille, bei dem der so erzeugte Strang im Anschluß an die Stranggießkokille im Bereich der Erstarrungsstrecke vor dem Punkt der Durcherstarrung unter Verminderung seiner Querschnittsfläche verformt wird, dadurch gekennzeichnet, daß nach Beendigung der Stahlzufuhr in die Stranggießkokille in das offene Ende des in der Stranggießkokille befindlichen Teiles des Stranges eine dem Stranggießkokillenformat am Austrittsende der Stranggießkokille entsprechende Hülse eingebracht und in den Gießkopf eingedrückt wird.1. A process for the continuous casting of steel in a liquid-cooled, top and bottom open continuous casting mold, in which the strand thus produced is deformed in connection with the continuous casting mold in the area of the solidification section before the point of solidification while reducing its cross-sectional area, characterized in that after completion of the steel feed into the continuous casting mold, a sleeve corresponding to the continuous casting mold format at the outlet end of the continuous casting mold is introduced into the open end of the part of the strand located in the continuous casting mold and is pressed into the casting head. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Hülse in der Querschnittsform der in der Stranggießkokille gebildeten Strangschale entspricht und mit einem derartigen Druck in den Strang eingebracht wird, daß eine Kante der Hülse mit der Strangschale verschweißt.2. The method according to claim 1, characterized in that that the sleeve in the cross-sectional shape of the in the continuous casting mold formed strand shell corresponds and with such a pressure is introduced into the strand that an edge of the sleeve with the Strand shell welded. 3. Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die Hülse in ihrer Länge derart bemessen ist, daß sie dem durch die Verformung des Stranges verdrängten Flüssiganteil des Stranges entspricht.3. The method according to claims 1 and 2, characterized in that the sleeve is dimensioned in length so that it through the deformation of the strand displaced liquid portion of the strand corresponds.
DE19914134159 1991-10-11 1991-10-11 Continuous casting process of steel, for redn. of scrap - comprises pouring molten steel into open-ended mould to produce strand, then reducing cross=section Expired - Fee Related DE4134159C1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19914134159 DE4134159C1 (en) 1991-10-11 1991-10-11 Continuous casting process of steel, for redn. of scrap - comprises pouring molten steel into open-ended mould to produce strand, then reducing cross=section
JP29804592A JPH05200502A (en) 1991-10-11 1992-10-09 Method to cast steel continuously

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19914134159 DE4134159C1 (en) 1991-10-11 1991-10-11 Continuous casting process of steel, for redn. of scrap - comprises pouring molten steel into open-ended mould to produce strand, then reducing cross=section

Publications (1)

Publication Number Publication Date
DE4134159C1 true DE4134159C1 (en) 1992-12-17

Family

ID=6442749

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19914134159 Expired - Fee Related DE4134159C1 (en) 1991-10-11 1991-10-11 Continuous casting process of steel, for redn. of scrap - comprises pouring molten steel into open-ended mould to produce strand, then reducing cross=section

Country Status (2)

Country Link
JP (1) JPH05200502A (en)
DE (1) DE4134159C1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3818077A1 (en) * 1988-05-25 1989-11-30 Mannesmann Ag METHOD FOR CONTINUOUS CASTING ROLLERS

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3818077A1 (en) * 1988-05-25 1989-11-30 Mannesmann Ag METHOD FOR CONTINUOUS CASTING ROLLERS

Also Published As

Publication number Publication date
JPH05200502A (en) 1993-08-10

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D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee