DE866237C - Process for the continuous casting of hollow bars - Google Patents

Process for the continuous casting of hollow bars

Info

Publication number
DE866237C
DE866237C DEV2299D DEV0002299D DE866237C DE 866237 C DE866237 C DE 866237C DE V2299 D DEV2299 D DE V2299D DE V0002299 D DEV0002299 D DE V0002299D DE 866237 C DE866237 C DE 866237C
Authority
DE
Germany
Prior art keywords
core
continuous casting
hollow bars
casting
cooled
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
Application number
DEV2299D
Other languages
German (de)
Inventor
Heinz Janssen
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.)
Vereinigte Leichtmetallwerke GmbH
Original Assignee
Vereinigte Leichtmetallwerke 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 Vereinigte Leichtmetallwerke GmbH filed Critical Vereinigte Leichtmetallwerke GmbH
Priority to DEV2299D priority Critical patent/DE866237C/en
Application granted granted Critical
Publication of DE866237C publication Critical patent/DE866237C/en
Expired 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
    • B22D11/006Continuous casting of metals, i.e. casting in indefinite lengths of tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Description

Hohlbarren werden nach dem Stranggießverfahren unter Anwendung eines gekühlten konischen Kernes hergestellt. Das Verfahren erfordert eine gewisse Geschicklichkeit des Gießers, da bei unsachgemäßer Handhabung der Kern im Blockkopf festschrumpfen kann. Um eine solche Störung auszuschalten, ist bereits bekannt, beim Gießen von Hohlbarren nach dem Stranggießverfahren dem Kern eine schwingende Bewegung in Längs- oder Querrichtung zu erteilen.Hollow bars are made by the continuous casting process using a cooled conical core. The procedure requires a certain skill of the caster, as improper handling of the core in the block head will shrink can. In order to eliminate such a disturbance, it is already known when pouring Hollow bars after the continuous casting process the core an oscillating movement in longitudinal or cross direction.

Nach der vorliegenden Erfindung wird nun ein Festschrumpfen des Kernes dadurch verhindert, daß man ihn fortlaufend rotieren läßt, und zwar gegebenenfalls etwas exzentrisch, wodurch der Hohlraum etwas weiter wird als, der Kerndurchmesser.According to the present invention, there is now a shrinkage of the core prevented by allowing it to rotate continuously, if necessary slightly eccentric, making the cavity a little wider than the core diameter.

Abb. i zeigt ein Beispiel einer solchen Einrichtung im Längsschnitt; Abb. 2 gibt die Draufsicht wieder.Fig. I shows an example of such a device in longitudinal section; Fig. 2 shows the top view.

i ist die verzweigte Gießrinne, die das Metall zu der gekühlten Stranggießform 2 führt. Der mit dem Gießtisch 3 absenkbare Kokillenboden q. besitzt innen eine. Bohrung,, in welche der gekühlte und rotierende Kern 5 hineinpaßt.i is the branched runner that brings the metal to the cooled continuous casting mold 2 leads. The mold bottom q which can be lowered with the casting table 3. has one inside. Bore in which the cooled and rotating core 5 fits.

Zu Beginn des Gießens ist .der Gießtisch hochgefahren, so daß der Kokillenboden in@ die Gießform hineinragt und auch den Kern teilweise umschließt.-In die so gebildete Form läßt man nun das flüssige Metall in bekannter Weise hineinfließen und. senkt den Boden: gleichzeitig langsam ab, so daß der Metallspiegel in der Form stets, gleich hoch bleibt, während der fertige Hohlbarren langsam nach unten austritt.At the beginning of the pouring. The pouring table is raised so that the Mold bottom protrudes into the casting mold and also partially surrounds the core the shape thus formed is then allowed to flow in the liquid metal in a known manner and. lowers the floor: at the same time slowly lowers so that the metal mirror is in the form always remains the same height, while the finished hollow bar slowly emerges downwards.

Der rotierende Kern besteht, wie auch die Kokille, zweckmäßigerweise aus einem Metall mit guter Wärmeleitfähigkeit, wie z,. B. Kupfer, Aluminium oder einer geeigneten: Legierung. Bei Metallern mit schlechter Wärmeleitfähigkeit, wie z. B. Stahl, muß man die Wandstärke entsprechend gering wählen, um einen hinreichenden Wärmedurchgang zu erzielen. Die Form des Kernes kann zylindrisch oder leicht konisch sein. Die Exzentrizität der Umdrehung des Kernes und die Tourenzahl müssen von Fall zu Fall ausprobiert werden. Man richtet die Vorrichtung daher zweckmäßig so ein, daß der Kern um mehrere Millimeter waagerecht verstellbar ist und daß die Tourenzahl von i bis etwa Zoo pro Minute einstellbar ist. Das Kühlwasser kann unten aus dem Kern ausfließen und den Block dabei noch durch unmittelbare Berührung kühlen.The rotating core, like the mold, is expediently made made of a metal with good thermal conductivity, such as. B. copper, aluminum or a suitable: alloy. For metallers with poor thermal conductivity, such as z. B. steel, you have to choose the wall thickness correspondingly low in order to achieve a sufficient To achieve heat transfer. The shape of the core can be cylindrical or slightly conical be. The eccentricity of the rotation of the core and the number of revolutions must depend on the case to be tried out on a case-by-case basis. It is therefore expedient to set up the device in such a way that that the core can be adjusted horizontally by several millimeters and that the number of revolutions can be set from i to about zoo per minute. The cooling water can come from the bottom Flow out the core and cool the block by touching it directly.

Es ist zweckmäßig, wenn die Vorrichtung so gebaut ist, daß die Verstellbarkeit der Exzentrizität des Kerns. und die Änderung der Tourenzahl während des Betriebes möglich ist.It is useful if the device is built so that the adjustability the eccentricity of the core. and changing the number of tours during operation is possible.

Claims (3)

PATENTANSPRÜCHE: i. Verfahren. zum Gießen von Hohlbarren aus Metallen und Legierungen nach dem Stranggießverfahren mittels eines in der Stranggießform befindlichen gekühlten Kerns., dadurch gekennzeichnet, daß der Kern während des Gießens eine Drehbewegung ausführt. PATENT CLAIMS: i. Procedure. for casting hollow bars made of metals and alloys by the continuous casting method by means of an in the continuous casting mold located cooled core., characterized in that the core during the Casting performs a rotary movement. 2. Verfahren nach Anspruch r, dadurch gekennzeichnet, daß der Kern an der Drehachse exzentrisch befestigt wirdi. 2. The method according to claim r, characterized in that that the core is attached eccentrically to the axis of rotation. 3. Vorrichtung zum Gießen von Hohlbarren aus Metallen und Legierungen nach dem Stranggießverfahren mittels eines in der Stranggießform befindlichem gekühlten Kerns, dadurch gekennzeichnet, daß der Kern eine Drehbewegung ausführt und exzentrisch verstellt werden kann und daß die Veränderung der Tourenzahl sowie der Exzentrizität des Kerns während des Betriebes möglich ist.3. Device for casting of hollow bars made of metals and alloys according to the continuous casting process by means of a cooled core located in the continuous casting mold, characterized in that that the core executes a rotary movement and can be adjusted eccentrically and that the change in the number of revolutions and the eccentricity of the core during the Operation is possible.
DEV2299D 1945-01-03 1945-01-03 Process for the continuous casting of hollow bars Expired DE866237C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEV2299D DE866237C (en) 1945-01-03 1945-01-03 Process for the continuous casting of hollow bars

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV2299D DE866237C (en) 1945-01-03 1945-01-03 Process for the continuous casting of hollow bars

Publications (1)

Publication Number Publication Date
DE866237C true DE866237C (en) 1953-02-09

Family

ID=7570047

Family Applications (1)

Application Number Title Priority Date Filing Date
DEV2299D Expired DE866237C (en) 1945-01-03 1945-01-03 Process for the continuous casting of hollow bars

Country Status (1)

Country Link
DE (1) DE866237C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3078527A (en) * 1959-09-17 1963-02-26 Continental Can Co Production of ingots with filled core channels
DE1608786B1 (en) * 1957-09-04 1970-06-04 Ile D Etudes De Centrifugation Centrifugal casting process with continuous output
US4546816A (en) * 1981-02-11 1985-10-15 Schwarz Gerhard E Method and apparatus of continuously casting hollow round billets with a hypocycloidal mandrel and an inside rolling process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1608786B1 (en) * 1957-09-04 1970-06-04 Ile D Etudes De Centrifugation Centrifugal casting process with continuous output
US3078527A (en) * 1959-09-17 1963-02-26 Continental Can Co Production of ingots with filled core channels
US4546816A (en) * 1981-02-11 1985-10-15 Schwarz Gerhard E Method and apparatus of continuously casting hollow round billets with a hypocycloidal mandrel and an inside rolling process

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