EP2548675A1 - Mould for strand casting metallic long products - Google Patents
Mould for strand casting metallic long products Download PDFInfo
- Publication number
- EP2548675A1 EP2548675A1 EP20110005905 EP11005905A EP2548675A1 EP 2548675 A1 EP2548675 A1 EP 2548675A1 EP 20110005905 EP20110005905 EP 20110005905 EP 11005905 A EP11005905 A EP 11005905A EP 2548675 A1 EP2548675 A1 EP 2548675A1
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- European Patent Office
- Prior art keywords
- mold
- metal elements
- flange
- sections
- sheet metal
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- 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.)
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- 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
- B22D11/009—Continuous casting of metals, i.e. casting in indefinite lengths of work of special cross-section, e.g. I-beams, U-profiles
-
- 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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/0406—Moulds with special profile
Definitions
- the invention relates to a mold for the continuous casting of long metal products with a round or polygonal cross section, which is at least partially made of a one-piece tube or of several pieces.
- a one-piece mold tube is provided, which is surrounded by a support casing or support plates. Between the mold tube and the support casing or the support plates limited cooling channels for guiding cooling water are arranged by support profiles and / or connection profiles.
- the production of such with a high life and best cooling effect distinctive Kokillenrohres is associated with relatively much and accurate processing and the delivery time is long, since the one-piece base pipe must first be prepared by conventional means.
- the present invention was the object of the present invention to provide a mold according to the type described above, by means of which the production of the same simplified and, accordingly, the entire manufacturing process in a shorter period of time is possible.
- cooling channels in the mold in different, cooling technically optimal versions with respect to cooling channel cross-sections and arrangements with respect to the inner surface of the Kokillenhohlraumes can be provided without this being associated with a significant increase in manufacturing costs. Furthermore, it should be possible to place the water inlet and outlet not only separately at both pipe ends but together at one of the pipe ends.
- a multiplicity of stacked sheet metal elements are provided either over the whole or at least over a certain height of the mold, the remaining part of the mold being formed from a one-piece pipe section, one or more flanges or other joined sections, the sections preferably by stirring friction welding and / or electron beam welding, soldering, electrodeposition and / or similar methods are inseparable from each other.
- the sections mentioned may have cutouts, channels or holes for cooling water flow.
- the aforementioned plate-shaped sections can preferably be produced on a numerically controlled water-jet cutting system.
- the mold may be formed from joined pieces extending in its longitudinal direction, preferably in the form of cut-to-length and if necessary bent, extruded solid or hollow profiles.
- These sections can also be attached to the outside of a one-piece round or polygonal mold and jointly designed such that between these cooling channels for the guidance of water cooling are formed, the sections again by stirring friction welding and / or by a soldering and / or similar are joined together.
- the closed cooling channels can be integrated in a simple manner in the mold and they can still be formed thin-walled.
- the cooling channels can, depending on the mold area in cooling technically optimal distance to the inner mold surface, which favors the solidification conditions and extends the life of the mold.
- the individual sections can, if required, be made of different types of copper or else of other materials, such as e.g. Made of stainless steel, to reduce manufacturing costs or to improve the performance properties.
- the individual height regions of the mold can be produced in accordance with the thermal load during the casting process from layers with different levels of thermal conductivity in order to achieve better thermal stability of the mold body.
- the individual stacking plates can also be made of different materials, e.g. Copper materials in the heat-conducting inner area and the outer edges of austenitic stainless steel to improve the magnetic permeability.
- the stacking plates can be provided with a thin electrically insulating layer.
- sections can be assembled very precisely and very efficiently by means of a suitable joining technique, preferably stirring-friction welding and / or by a soldering method and / or the like.
- the mold cavity can be machined, preferably processed by longitudinal planing or milling.
- suitable coatings can be applied to the inner surface, e.g. Hard chrome and / or nickel.
- coatings e.g. Copper or nickel, which are preferably applied galvanically before mechanical processing.
- Fig. 1 shows a mold 10 for a mold assembly, which in conventional manner has a mold cavity 15 with an approximately square cross section and is provided for the production of billets.
- the mold 10 could also be designed differently in cross-section, for example as a mold tube for a billet, each having a rectangular, octagonal, trapezoidal, double-T-shaped or round hollow shaped cross section.
- This mold 10 is also bent in the direction of the plane formed by the strand course in a known manner, which is therefore not explained in detail. At least the outer circumference could also be straight in the longitudinal direction.
- this mold 10 consists of over its entire height stacked sheet metal elements 11, 12, 13 as joined sections, the respective adjacent sheet metal elements are joined together by a joining technique, very advantageous by stirring friction welding, and / or by a soldering and / or the like.
- the sheet metal elements are welded in each case over their entire, with the adjacent sheet metal element in contact annular surface.
- the other sheet metal elements 11, 12 are in each case shaped, for example punched or cut by means of a water jet, that they have openings 16 transverse to their longitudinal extent, which form cooling channels 17 for cooling the same in the assembled state of the mold 10.
- the arrangement and the number of openings 16 are optimally adapted to the casting parameters, wherein such openings 16 are advantageously arranged distributed on all four sides of the mold.
- Inlets and outlets 18 of the cooling channels are provided, which are formed by corresponding recesses in the sheet metal elements 12.
- These stacked sheet metal elements. 11, 12, 13 have an approximately identical shape, wherein at least the two located at the top and bottom end sheet metal elements 13 form a conclusion and therefore contain no openings 16.
- the mold cavity 15 forming inner surfaces 15 'machined by welding or planing after the welding together of the sheet metal elements 11, 12, 13, so that these inner surfaces 15' can be provided with sufficient accuracy.
- These inner surfaces can be coated galvanically or by other methods before and / or after the machining.
- a variant of a sheet metal element 21 is illustrated as a portion of a mold, which in contrast to that after Fig. 1 has rounded corners.
- the sheet metal elements have openings 16 on the entire circumference, which form water-bearing channels after stacking of the elements.
- Fig. 3 shows a mold 30 with an approximately square cross-section having mold cavity 35.
- end flanges made of plate material or of a plurality of stacked sheet metal elements 31.
- a plurality of longitudinally extending portions 32, 33, 34, 36 are preferably used and extruded from extruded hollow sections.
- the corners of the mold forming sections 32, 34 and four elongated sections 33, 36 are provided, which are each arranged in the central region of the mold.
- cooling ducts 37 are contained in these sections 32, 33, 34, 36, for the purpose of which these sections are designed in each case as square-shaped, shaped profiles.
- inlets and outlets 38 are provided for the cooling liquid at the top and bottom.
- the adjacent sections and the sheet metal or plate elements are according to the invention by stirring friction welding and / or connected by a soldering process tightly, such that the sections 32, 33, 34, 36 welded over its entire length or sheet metal elements 31 around and / or soldered.
- a mold 40 In a mold 40 according to Fig. 4 In the part shown on the left, larger corner radii or other variants of sheet metal elements are shown as shown on the right.
- This mold 40 is characterized in that it is composed of a one-piece, thin-walled inner tube 41 and from this surrounding sections. These sections are shaped as corrugated sheet metal elements 42 and joined together with their along the mold 40 webs 43 by stirring friction welding or the like with the mold, whereby the cross-sectional circumference cooling channels 44 are formed, which are each provided with an inlet and outlet not shown in detail ,
- a metal jacket 46 surrounding the mold 40 in the case of the half shown on the left is also indicated, which in turn is provided via stirring friction welding to the sheet metal elements 42 is attached.
- additional cooling channels are formed and the rigidity of the thin-walled mold is thereby increased. Since the requirements for the cooling of the corner areas are different depending on the size of the corner rounding.
- a thin-walled one-piece mold 60 according to Fig. 5 are four quadrants with different variants with and without metal jacket or in the left half and large in the right half small corner radii 61, 62 indicated.
- cooling channels 65 are provided, which are closed by illustrated in different variants flat or curved sheet metal elements 66, 67 or hollow profile sections 68 and so supply or return channels 65 '65 "form.
- Fig. 6 and Fig. 7 show a further embodiment of an inventive mold 50, which similar to that of FIG Fig. 1 composed of stacked, provided with openings 56 for the cooling channels sheet metal elements 51.
- this mold 50 is in the left half at its upper and lower end depending a flange 53, 54 arranged as a conclusion, which radial openings 53 ', 54' are assigned, with which the cooling liquid, for example, at the lower flange 54 and at upper flange 53 is again led away.
- the connection openings of the flanges can also be arranged vertically or horizontally and the connection can be made in the case corresponding to a horizontal or vertical Wasserleitplatte.
- the flanges 53, 54 are preferably produced in several parts and, in turn, joined together in the context of the invention, in particular by stirring friction welding, with the sheet metal elements 51.
- a flange 58 In the right half of the Fig. 6 is shown as an alternative only above a flange 58, in which thedeementzu- or -ablauf 58 ', 58 "are assigned ..
- the proposed cooling channel 59 is deflected on the underside of the mold again upwards and then leads to the drain 58".
- This flange 58 could for example also be arranged on the underside or in the middle of the mold.
- Fig. 8 shows a further variant of a partially illustrated mold 80 with an upper flange 81, which according to the invention is attached to the pipe.
- cooling channels 83 and inlets or outlets 84 are again provided.
- the mold 80 may be made in one or more parts, as for example in Fig. 3 is provided.
- the invention is sufficiently demonstrated with the embodiments explained above.
- the layered sheet-metal elements could be provided with a thicker wall thickness and the openings serving as cooling channels could be guided horizontally in these partially or all around.
- the mold according to Fig. 4 or 5 instead of integrally also be composed of stacked sheet metal elements and / or elongated sections.
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- Mechanical Engineering (AREA)
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
Die Erfindung betrifft eine Kokille zum Stranggiessen von metallischen Langprodukten mit einem runden oder polygonalen Querschnitt, welches zumindest teilweise aus einem einteiligen Rohr oder aus mehreren Teilstücken hergestellt ist.The invention relates to a mold for the continuous casting of long metal products with a round or polygonal cross section, which is at least partially made of a one-piece tube or of several pieces.
Herkömmliche Kokillen zum Stranggiessen von metallischen Langprodukten, wie Knüppel, Vorblöcke, Rund-, Doppel T-Vorprofile oder ähnlichem werden entweder aus einem einteiligen, runden oder mehreckigen Rohr oder aus zusammengefügten Plattenelementen gefertigt.Conventional molds for continuous casting of long metal products, such as billets, billets, round, double T-Vorprofile or the like are made either of a one-piece, round or polygonal tube or assembled plate elements.
Bekannt sich auch Kokillen, welche aus einem massiven Block hergestellt sind und nahe des Kokillenhohlraumes Kühlbohrungen aufweisen.Is also known molds, which are made of a solid block and near the Kokillenhohlraumes have cooling holes.
Diese einteiligen, meistens aus Kupfer bestehenden Kokillen sind bekanntlich aufwendig herzustellen, bieten jedoch giesstechnische Vorteile, da sie spaltfrei und dicht sind. Solche Kokillen müssen in mehreren Arbeitsgängen produziert werden, indem sie zuerst gegossen, dann mit entsprechenden Dornen zunächst warm und dann kalt umgeformt und gezogen bzw. gedrückt werden. Aufgrund dieser vielen aufwendigen Arbeitsgänge-und der dazu benötigten leistungsstarken Umformaggregate sowie auftragsspezifischen Werkzeuge, welche für eine ausreichend genaue Herstellung erforderlich sind, entstehen lange Lieferzeiten, wenn eine Kokille für ein bestimmtes Giessformat bestellt wird.These one-piece, mostly made of copper molds are known to produce consuming, but offer casting advantages, since they are gap-free and dense. Such molds must be produced in several operations by first cast, then with appropriate thorns first warm and then cold formed and pulled or pressed. Due to these many complex operations and the required high-performance forming units and order-specific tools, which are required for a sufficiently accurate production, long delivery times arise when a mold for a particular casting format is ordered.
Bei einer Kokille zum Stranggiessen von Vorblöcken, Brammen oder Knüppeln nach der Druckschrift
Bekannt sind ebenfalls Kokillenrohre mit geschlossenen Kühlkanälen in Form von runden Tiefbohrungen, welche von einer oder von beiden Stirnflächen des Kokillenrohres ausgehen. Derartige Kühlbohrungen sind teuer in der Fertigung, und da sie nur geradlinig verlaufen können, ist deren präzise und kühltechnisch optimale Plazierung in Bezug auf den Kokillenhohlraum schwierig.Are also known Kokillenrohre with closed cooling channels in the form of round deep holes, which emanate from one or both faces of the mold tube. Such cooling holes are expensive to manufacture, and since they can only be rectilinear, their precise and cooling technically optimal placement with respect to the mold cavity is difficult.
Der vorliegenden Erfindung wurde demgegenüber die Aufgabe zugrundegelegt, eine Kokille nach der eingangs beschriebenen Gattung zu schaffen, mittels welchem die Herstellung desselben vereinfacht und dementsprechend der gesamte Herstellungsprozess in kürzerer Zeitdauer möglich ist.The present invention was the object of the present invention to provide a mold according to the type described above, by means of which the production of the same simplified and, accordingly, the entire manufacturing process in a shorter period of time is possible.
Ferner sollen auch Kühlkanäle in der Kokille in verschiedenen, kühltechnisch optimalen Ausführungen hinsichtlich Kühlkanalquerschnitte und Anordnungen in Bezug auf die Innenfläche des Kokillenhohlraumes vorgesehen werden können, ohne dass dies mit einer erheblichen Steigerung des Herstellungsaufwandes verbunden ist. Weiterhin sollte es möglich sein die Wasserzu - und ableitung nicht nur getrennt an beiden Rohrenden sondern gemeinsam an einem der Rohrenden zu plazieren.Furthermore, cooling channels in the mold in different, cooling technically optimal versions with respect to cooling channel cross-sections and arrangements with respect to the inner surface of the Kokillenhohlraumes can be provided without this being associated with a significant increase in manufacturing costs. Furthermore, it should be possible to place the water inlet and outlet not only separately at both pipe ends but together at one of the pipe ends.
Die Aufgabe ist erfindungsgemäss nach den Merkmalen des Anspruches 1 gelöst.The object is achieved according to the features of claim 1.
Erfindungsgemäss sind als zusammengefügte Teilstücke eine Vielzahl von aufeinandergeschichteten Blechelementen entweder über die gesamte oder zumindest über eine bestimmte Höhe der Kokille vorgesehen, wobei der übrige Teil der Kokille aus einem einteiligen Rohrabschnitt, einem oder mehreren Flanschen oder aus anderen zusammengefügten Teilstücken gebildet ist, wobei die Teilstücke vorzugsweise durch Rühr-Reibschweissen und/oder Elektronenstrahlsschweissen, Löten, galvanisch Abscheiden und/oder ähnlichen Verfahren unlösbar zusammenfügbar sind. Die genannten Teilstücke können Ausschnitte, Kanäle oder Bohrungen zur Kühlwasserführung aufweisen. Die genannten plattenförmigen Teilstücke lassen sich vorzugsweise auf einer numerisch gesteuerten Wasserstrahl-Schneidanlage herstellen.According to the invention, a multiplicity of stacked sheet metal elements are provided either over the whole or at least over a certain height of the mold, the remaining part of the mold being formed from a one-piece pipe section, one or more flanges or other joined sections, the sections preferably by stirring friction welding and / or electron beam welding, soldering, electrodeposition and / or similar methods are inseparable from each other. The sections mentioned may have cutouts, channels or holes for cooling water flow. The aforementioned plate-shaped sections can preferably be produced on a numerically controlled water-jet cutting system.
Alternativ kann die Kokille im Rahmen der Erfindung aus in seiner Längsrichtung erstreckenden zusammengefügten Teilstücken, vorzugsweise in Form von abgelängten und falls nötig gebogenen stranggepressten Voll- oder Hohlprofilen gebildet sein. Diese Teilstücke können aber auch an der Aussenseite einer einteiligen runden oder mehreckigen Kokille befestigt und gemeinsam derart ausgestaltet sein, dass zwischen diesen Kühlkanäle für die Führung der Wasserkühlung gebildet sind, wobei die Teilstücke wiederum durch Rühr-Reibschweissen und/oder durch ein Lötverfahren und/oder ähnlichem zusammenfügbar sind.Alternatively, in the context of the invention, the mold may be formed from joined pieces extending in its longitudinal direction, preferably in the form of cut-to-length and if necessary bent, extruded solid or hollow profiles. These sections can also be attached to the outside of a one-piece round or polygonal mold and jointly designed such that between these cooling channels for the guidance of water cooling are formed, the sections again by stirring friction welding and / or by a soldering and / or similar are joined together.
Mit dieser erfindungsgemässen Ausbildung der Kokille lassen sich die geschlossene Kühlkanäle auf einfache Weise in der Kokille integrieren und sie kann aber trotzdem dünnwandig ausgebildet sein. Die Kühlkanäle können, je nach Kokillenbereich in kühltechnisch optimalen Abstand zur Kokilleninnenfläche verlaufen, was die Erstarrungsbedingungen begünstigt und die Lebensdauer der Kokille verlängert.With this inventive design of the mold, the closed cooling channels can be integrated in a simple manner in the mold and they can still be formed thin-walled. The cooling channels can, depending on the mold area in cooling technically optimal distance to the inner mold surface, which favors the solidification conditions and extends the life of the mold.
Die einzelnen Teilstücke können je nach Kokillenbereich bei Bedarf aus unterschiedlichen Kupfersorten oder auch aus anderen Werkstoffen, wie z.B. aus nichtrostendem Stahl bestehen, um die Herstellungskosten zu reduzieren oder die Gebrauchseigenschaften zu verbessern.Depending on the mold area, the individual sections can, if required, be made of different types of copper or else of other materials, such as e.g. Made of stainless steel, to reduce manufacturing costs or to improve the performance properties.
Beispielsweise können die einzelnen Höhenbereiche der Kokille entsprechend der thermischen Belastung während dem Giessprozess aus Schichten mit unterschiedlich hoher Wärmleitfähigkeit hergestellt werden, um bessere thermische Stabilität des Kokillenkörpers zu erreichen. Die einzelnen Stapelplatten können auch in sich aus unterschiedlichen Werkstoffen bestehen, z.B. Kupferwerkstoffe im wärmeführenden inneren Bereich und die äusseren Randbereiche aus nichtrostendem austenitischem Stahl um die magnetische Durchlässigkeit zu verbessern. Um die Wirbelstromverluste beim Einsatz von Magnetfeldern zu vermindern, können die Stapelplatten mit einer dünnen elektrisch isolierenden Schicht versehen werden.For example, the individual height regions of the mold can be produced in accordance with the thermal load during the casting process from layers with different levels of thermal conductivity in order to achieve better thermal stability of the mold body. The individual stacking plates can also be made of different materials, e.g. Copper materials in the heat-conducting inner area and the outer edges of austenitic stainless steel to improve the magnetic permeability. In order to reduce the eddy current losses when using magnetic fields, the stacking plates can be provided with a thin electrically insulating layer.
Diese Teilstücke können durch eine geeignete Fügetechnik, vorzugsweise Rühr-Reibschweissen und/oder durch ein Lötverfahren und/oder ähnlichem sehr präzise und sehr rationell zusammengefügt werden. Der Kokillenhohlraum kann spanabhebend, vorzugsweise durch Längshobeln oder Fräsen bearbeitet werden. Anschliessend können an der Innenfläche geeignete Beschichtungen aufgetragen werden, wie z.B. Hartchrom und/oder Nickel. Denkbar sind auch Beschichtungen, z.B. Kupfer oder Nickel, welche vorzugsweise galvanisch vor der mechanischen Bearbeitung angebracht werden.These sections can be assembled very precisely and very efficiently by means of a suitable joining technique, preferably stirring-friction welding and / or by a soldering method and / or the like. The mold cavity can be machined, preferably processed by longitudinal planing or milling. Subsequently, suitable coatings can be applied to the inner surface, e.g. Hard chrome and / or nickel. Also conceivable are coatings, e.g. Copper or nickel, which are preferably applied galvanically before mechanical processing.
Als weiterer Vorteil ergibt sich, dass auf ein vom Kupferhersteller auf Lager produziertes Vormaterial in Form von gewalzten Platten oder stranggepressten Hohl- oder Vorprofilen zurückgegriffen werden kann.As a further advantage, it is possible to make use of a primary material produced by the copper producer in stock in the form of rolled plates or extruded hollow or pre-profiles.
Ausführungsbeispiele sowie weitere Vorteile der Erfindung sind anhand der Zeichnung näher erläutert. Es zeigen:
- Fig. 1
- eine perspektivische schematische Darstellung eines erfindungsgemässe Kokille mit aufeinandergeschichteten Blechelementen;
- Fig. 2
- eine Draufsicht eines einzelnen Blechelementes für eine Kokille;
- Fig. 3
- eine perspektivische schematische Darstellung einer erfindungsgemässen alternativen Kokille mit längs nebeneinander angeordneten länglichen Teilstücken aus stranggepressten Hohlprofilen und Abschlussflanschen aus Plattenmaterial;
- Fig. 4
- einen Querschnitt einer dünnwandigen, einteiligen glatten Kokille mit an dessen äusserem Umfang angefügten profilierten Blechelementen bzw. Formprofilen zur Bildung von Kühlkanälen, wobei der links gezeigte Teil der Kokille grössere Eckenradien bzw. andere Varianten von Blechelementen als der rechts gezeigte aufweist;
- Fig. 5
- einen Querschnitt einer dünnwandigen, einteiligen Kokille, welche in vier unterschiedlichen Varianten jeweils einen Quadranten des Querschnittes veranschaulichend gezeigt sind;
- Fig. 6
- einen Längsschnitt durch eine erfindungsgemässe Kokille mit aufeinandergeschichteten Blechelementen, bei welcher in der linken Hälfte oben und unten je ein Flansch, indes in der rechten Hälfte nur oben ein Flansch veranschaulicht ist;
- Fig. 7
- einen Querschnitt durch die Kokille nach
Fig. 6 auf der Höhe der Anschlussflanschen; und - Fig. 8
- einen Schnitt einer weiteren Variante einer teilweise dargestellten Kokille mit einem oberen Flansch.
- Fig. 1
- a perspective schematic representation of an inventive mold with stacked sheet metal elements;
- Fig. 2
- a plan view of a single sheet member for a mold;
- Fig. 3
- a perspective schematic representation of an inventive alternative mold with longitudinally juxtaposed elongated Sections of extruded hollow sections and end flanges of sheet material;
- Fig. 4
- a cross-section of a thin-walled, one-piece smooth mold with attached at its outer periphery profiled sheet metal elements or molding profiles to form cooling channels, wherein the left part of the mold shown has larger corner radii or other variants of sheet metal elements as shown on the right;
- Fig. 5
- a cross section of a thin-walled, one-piece mold, which are shown in four different variants each one quadrant of the cross section illustrative;
- Fig. 6
- a longitudinal section through an inventive mold with stacked sheet metal elements, in which in the left half above and below each a flange, while in the right half only above a flange is illustrated;
- Fig. 7
- a cross section through the mold after
Fig. 6 at the height of the connection flanges; and - Fig. 8
- a section of another variant of a partially illustrated mold with an upper flange.
Erfindungsgemäss besteht diese Kokille 10 aus über ihre gesamte Höhe aufeinandergeschichteten Blechelementen 11, 12, 13 als zusammengefügte Teilstücke, wobei die jeweils benachbarten Blechelemente durch eine Fügetechnik, sehr vorteilhaft durch Rühr-Reibschweissen, und/oder durch ein Lötverfahren und/oder ähnlichem zusammengefügt sind. Die Blechelemente sind jeweils über ihre gesamte, mit der dem benachbarten Blechelement in Berührung stehenden Ringfläche verschweisst. Die anderen Blechelemente 11, 12 sind jeweils derart geformt, beispielsweise gestanzt oder mittels Wasserstrahl geschnitten, dass diese quer zu ihrer Längsausdehnung Öffnungen 16 aufweisen, die im zusammengebauten Zustand der Kokille 10 Kühlkanäle 17 für die Kühlung derselben bilden. Die Anordnung sowie die Anzahl der Öffnungen 16 sind den Giessparametern optimal angepasst, wobei vorteilhaft auf allen vier Seiten der Kokille solche Öffnungen 16 verteilt angeordnet sind. Am oberen als auch am unteren Ende der Kokille 10 sind Ein- und Auslässe 18 der Kühlkanäle vorgesehen, die durch entsprechende Ausnehmungen bei den Blechelementen 12 gebildet sind.According to the invention, this
Diese aufeinandergeschichteten Blechelemente. 11, 12, 13 weisen eine annähernd gleiche Form auf, wobei zumindest die beiden am oberen bzw. unteren Ende befindliche Blechelemente 13 einen Abschluss bilden und daher keine Öffnungen 16 enthalten.These stacked sheet metal elements. 11, 12, 13 have an approximately identical shape, wherein at least the two located at the top and bottom end
Mit Vorteil sind die den Formhohlraum 15 bildenden Innenflächen 15' nach dem Zusammenschweissen der Blechelemente 11, 12, 13 spanabhebend durch Fräsen oder Hobeln bearbeitet, damit diese Innenflächen 15' mit einer ausreichenden Genauigkeit versehen werden können. Diese Innenflächen können vor und/ oder nach der spanabhebenden Bearbeitung galvanisch oder nach anderen Verfahren beschichtet werden.Advantageously, the
In
Durch das Vorsehen von Blechelementen 11, 21 ergibt sich der weitere Vorteil, dass solche Öffnungen auf einfache Weise praktisch in beliebiger Form und Anordnung hergestellt werden können.By providing
Es sind hierbei vier längliche, die Ecken der Kokille bildende Teilstücke 32, 34 sowie vier längliche Teilstücke 33, 36 vorgesehen, welche jeweils im Mittelbereich der Kokille angeordnet sind. Des Weiteren sind in diesen Teilstücken 32, 33, 34, 36 Kühlkanäle 37 enthalten, zu dem Zwecke diese Teilstücke jeweils als im Querschnitt viereckige Formprofile ausgestaltet sind. Zudem sind am oberen und unteren Ende Ein- und Auslässe 38 für die Kühlflüssigkeit vorgesehen.There are four elongated, the corners of the
Es ist ebenfalls möglich, diese Ein- und Auslässe an einem der beiden KokillenEnden, vorzugsweise am Oberteil vorzusehen. In diesem Fall wird der Kühlwasserdurchfluss an einem der Enden umgekehrt und entweder über Kühlkanäle oder separate, dahinterliegenden Rückführungskanäle zu Auslasskanälen am anderen Ende geleitet.It is also possible to provide these inlets and outlets at one of the two KokillenEnden, preferably at the top. In this case, the cooling water flow at one of the ends is reversed and directed either via cooling channels or separate, underlying return channels to outlet channels at the other end.
Die benachbarten Teilstücke und die Blech- oder Plattenelemente sind erfindungsgemäss durch Rühr-Reibschweissen und/oder durch ein Lötverfahren miteinander dicht verbunden, derart, dass die Teilstücke 32, 33, 34, 36 über ihre gesamte Länge bzw. die Blechelemente 31 rundum geschweisst und/oder gelötet sind.The adjacent sections and the sheet metal or plate elements are according to the invention by stirring friction welding and / or connected by a soldering process tightly, such that the
Bei einer Kokille 40 gemäss
Es ist ferner noch ein die Kokille 40 bei der links dargestellten Hälfte umgebender Blechmantel 46 angedeutet, der seinerseits via Rühr-Reibschweissen an den Blechelementen 42 befestigt ist. In diesem Fall werden zusätzliche Kühlkanäle gebildet und die Steifigkeit der dünnwandigen Kokille wird dadurch erhöht. Da die Anforderungen für die Kühlung der Eckenbereiche je nach Grösse der Eckenverrundung unterschiedlich sind.Furthermore, a
Bei einer dünnwandigen einteiligen Kokille 60 gemäss
In der rechten Hälfte der
Wie in der
Die Erfindung ist mit den oben erläuterten Ausführungsbeispielen ausreichend dargetan. Sie könnte aber selbstverständlich noch durch andere Varianten verdeutlicht sein. So könnten beispielsweise die geschichteten Blechelemente mit einer dickeren Wandstärke versehen und die als Kühlkanäle dienenden Öffnungen horizontal in diesen partiell oder rundherum geführt sein. Als Variante könnte die Kokille gemäss
Claims (12)
als zusammengefügte Teilstücke eine Vielzahl von aufeinandergeschichteten Blechelementen (11, 12, 13, 21, 31, 51) entweder über die gesamte oder zumindest über eine bestimmte Höhe der Kokille (10, 30, 50) vorgesehen sind, wobei der übrige Teil der Kokille (30, 50) gegebenenfalls aus einem einteiligen Rohr oder aus zusammengefügten Teilstücken (32, 33, 34, 36) gebildet ist, oder dass Teilstücke (42) an der Aussenseite einer Kokille (41) befestigt sind und dabei Kühlkanäle (44) für die Führung der Wasserkühlung bilden, wobei die Teilstücke durch eine Fügetechnik vorzugsweise durch Rühr-Reibschweissen und/oder durch ein Lötverfahren spaltfrei dicht zusammenfügbar sind.Mold for continuous casting of long metal products with a round or polygonal cross section, which is at least partially made of a one-piece tube or of several pieces, characterized in that
as assembled sections, a plurality of stacked sheet metal elements (11, 12, 13, 21, 31, 51) either over the entire or at least over a certain height of the mold (10, 30, 50) are provided, wherein the remaining part of the mold ( 30, 50) is optionally formed from a one-piece tube or from assembled sections (32, 33, 34, 36), or that portions (42) are fixed to the outside of a mold (41) and thereby cooling channels (44) for the guide form the water cooling, the sections are by a joining technique, preferably by stirring friction welding and / or by a soldering gap-tight tightly joined together.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20110005905 EP2548675A1 (en) | 2011-07-19 | 2011-07-19 | Mould for strand casting metallic long products |
PCT/EP2012/003006 WO2013010663A1 (en) | 2011-07-19 | 2012-07-17 | Mould for continuously casting long metallic products |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20110005905 EP2548675A1 (en) | 2011-07-19 | 2011-07-19 | Mould for strand casting metallic long products |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2548675A1 true EP2548675A1 (en) | 2013-01-23 |
Family
ID=44584767
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20110005905 Withdrawn EP2548675A1 (en) | 2011-07-19 | 2011-07-19 | Mould for strand casting metallic long products |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2548675A1 (en) |
WO (1) | WO2013010663A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111570745A (en) * | 2020-06-08 | 2020-08-25 | 中冶京诚工程技术有限公司 | Direct rolling continuous casting machine and continuous casting production line thereof |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3284550B2 (en) | 2016-08-18 | 2023-04-26 | SMS Concast AG | Method for producing a mould for continuous casting of metallic products, and a mould |
CN109604566B (en) * | 2019-01-18 | 2024-06-21 | 潍坊亚东冶金设备有限公司 | Multilayer sectional combined split special-shaped crystallizer for electroslag casting blade |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1119531A (en) * | 1965-06-23 | 1968-07-10 | Valyi Emery I | Improvements relating to heat exchange apparatus |
DE2243918A1 (en) * | 1972-09-07 | 1974-03-14 | Krupp Gmbh | Continuous casting chill mould - with pressed-in lining of sintered copper-tin-graphite |
DE2355249A1 (en) * | 1972-11-10 | 1974-05-16 | British Steel Corp | BLOCK CASTING FORM, IN PARTICULAR FOR BLOCK CASTING FOR ELECTRIC SLASK |
JPS5626661A (en) * | 1979-08-07 | 1981-03-14 | Nippon Steel Corp | Molten metal cooling mold of less electromagnetic force transmission loss |
EP0071822A1 (en) * | 1981-08-03 | 1983-02-16 | Alumax Inc. | Mold for use in metal or metal alloy casting systems and process for mixing a molten metal or metal alloy |
EP2014393A1 (en) | 2007-06-04 | 2009-01-14 | Concast Ag | Mould for strand casting of blooms, cogged blooms or billets |
-
2011
- 2011-07-19 EP EP20110005905 patent/EP2548675A1/en not_active Withdrawn
-
2012
- 2012-07-17 WO PCT/EP2012/003006 patent/WO2013010663A1/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1119531A (en) * | 1965-06-23 | 1968-07-10 | Valyi Emery I | Improvements relating to heat exchange apparatus |
DE2243918A1 (en) * | 1972-09-07 | 1974-03-14 | Krupp Gmbh | Continuous casting chill mould - with pressed-in lining of sintered copper-tin-graphite |
DE2355249A1 (en) * | 1972-11-10 | 1974-05-16 | British Steel Corp | BLOCK CASTING FORM, IN PARTICULAR FOR BLOCK CASTING FOR ELECTRIC SLASK |
JPS5626661A (en) * | 1979-08-07 | 1981-03-14 | Nippon Steel Corp | Molten metal cooling mold of less electromagnetic force transmission loss |
EP0071822A1 (en) * | 1981-08-03 | 1983-02-16 | Alumax Inc. | Mold for use in metal or metal alloy casting systems and process for mixing a molten metal or metal alloy |
EP2014393A1 (en) | 2007-06-04 | 2009-01-14 | Concast Ag | Mould for strand casting of blooms, cogged blooms or billets |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111570745A (en) * | 2020-06-08 | 2020-08-25 | 中冶京诚工程技术有限公司 | Direct rolling continuous casting machine and continuous casting production line thereof |
Also Published As
Publication number | Publication date |
---|---|
WO2013010663A1 (en) | 2013-01-24 |
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