DE866237C - Process for the continuous casting of hollow bars - Google Patents
Process for the continuous casting of hollow barsInfo
- 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
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
- B22D11/006—Continuous 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)
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)
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 |
-
1945
- 1945-01-03 DE DEV2299D patent/DE866237C/en not_active Expired
Cited By (3)
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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