EP2841223B1 - Casting process and mould - Google Patents

Casting process and mould Download PDF

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Publication number
EP2841223B1
EP2841223B1 EP13723434.0A EP13723434A EP2841223B1 EP 2841223 B1 EP2841223 B1 EP 2841223B1 EP 13723434 A EP13723434 A EP 13723434A EP 2841223 B1 EP2841223 B1 EP 2841223B1
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EP
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Prior art keywords
piston
casting
axis
rotation
filling
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EP13723434.0A
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German (de)
French (fr)
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EP2841223A2 (en
Inventor
Celestine OBUNA
Jacques Guyon
Thomas Hutzler
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Federal Mogul Nuernberg GmbH
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Federal Mogul Nuernberg GmbH
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Priority to PL13723434T priority Critical patent/PL2841223T3/en
Publication of EP2841223A2 publication Critical patent/EP2841223A2/en
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Publication of EP2841223B1 publication Critical patent/EP2841223B1/en
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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
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/08—Shaking, vibrating, or turning of moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
    • B22D15/02—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor of cylinders, pistons, bearing shells or like thin-walled objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0009—Cylinders, pistons
    • B22D19/0027—Cylinders, pistons pistons

Definitions

  • the invention relates to a method for casting a piston for an internal combustion engine, as well as an associated use of a casting tool.
  • Vorbe angles For the standing casting are known as Vorbe anglessussinot machines, which make it possible to pour in a tilted up to 30 degrees from the vertical state.
  • the CH 135526 A relates to a method and a mold for casting composite blocks, in which during casting the angular position of the mold is changed.
  • the tool cavity defining tooling sections are rotated or tilted at least 45 degrees about a horizontal axis so that the axis of rotation of the piston to be cast moves in the vertical direction this preferably at least approximates.
  • the basic idea of the invention thus consists essentially in filling the casting cavity in a largely "lying" position of the casting cavity. This offers particularly favorable filling conditions, since comparatively thin regions, such as, for example, the remaining wall thickness between a later cooling channel of a piston and a ring carrier can be filled better than in the standing casting method.
  • foreign substances that are defects in the cast component, such as oxides or almin residues, when filling in the lying state are advantageously conducted into regions of the workpiece which can later be removed with little effort or have to be processed anyway and thus removed.
  • the invention makes use of the advantages of the upright casting method insofar as the feeding behavior is better here. This is essentially due to the fact that a largely rotationally symmetrical component is cast, whose G confusehohlraum is filled in the horizontal casting with a single-sided feeder. In the tilting according to the invention in the direction of the stationary casting method, the cheaper, largely symmetrical feeding behavior of a central feeder is used. In particular, the improved feed is expected to reduce the porosity in the molded component.
  • the casting cavity is tilted as a whole, so that the axis of rotation of the component to be cast, as described, changes its orientation.
  • the known in the prior art devices and methods in which individual tool sections adjacent to the casting cavity, but not define this total, are pivotable, are so far not comparable with the inventive approach.
  • the tool can be referred to as a mold.
  • the tilting movement in other words, the position of the axis of rotation of the component during filling, and / or the tilt angle and / or the Location of the axis of rotation of the component during solidification are adjustable.
  • the tilt angle By a flexible adjustment of the tilt angle, the filling behavior and / or the solidification behavior can be influenced in an advantageous manner.
  • the axis of rotation of the piston to be cast be largely aligned horizontally during filling.
  • the liquid material is filled at a lateral region of the piston to be cast.
  • the mold cavity has at least one recess which is located in an upright casting manner in an upper, preferably at the highest region of the mold cavity. This forms in this area after the complete filling a kind of dirt bag, in which any impurities were flushed.
  • the advantages of the upright casting method can be used particularly extensively by arranging a feeder after tilting the casting cavity in an upper region, in particular at a location other than the sprue.
  • the method according to the invention unfolds its advantages in a particular way when the component to be cast is cast with at least one insert, such as a ring carrier and / or a core for a cooling channel of a piston for an internal combustion engine.
  • at least one insert such as a ring carrier and / or a core for a cooling channel of a piston for an internal combustion engine.
  • the figure shows schematically the procedure according to the invention in the casting of a piston for an internal combustion engine.
  • the feeder is located on one side of the workpiece, after filling, and for solidifying the workpiece but at the highest point of the workpiece.
  • the reference numeral 14 denotes a sprue which is located laterally in the filling of the casting cavity, as shown in the figure "in front of" the mold cavity.
  • the gate 14 is preferably provided at a location other than the feeder 16, and preferably separately therefrom.
  • a recess 18 is preferably provided in the mold cavity which forms a kind of dirt pocket to which impurities are flushed. Here they can be easily removed during subsequent processing.
  • the recess 18 may be provided at an arbitrary position along the axis of rotation A of the piston 10.
  • the symmetry of the piston 10 to be generated in the course of the solidification process is utilized in that the mold cavity defining the later piston, as shown in the right-hand area of the figure, is tilted after filling of the molten material in such a way that the axis of rotation of the component to be produced is substantially perpendicular is aligned.
  • the feeder 16 is in an upper region in this state. In this orientation, it is to be expected for the solidification conditions that they lead to advantageous properties on the component produced.
  • this floor area can be provided by the procedure according to the invention as a finished cast floor area with corresponding contours that can no longer be reworked.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Description

GEBIET DER ERFINDUNGFIELD OF THE INVENTION

Die Erfindung betrifft ein Verfahren zum Gießen eines Kolbens für einen Verbrennungsmotor, sowie eine zugehörige Verwendung eines Gießwerkzeugs.The invention relates to a method for casting a piston for an internal combustion engine, as well as an associated use of a casting tool.

Bei rotationssymmetrischen Bauteilen, wie zum Beispiel Kolben für Verbrennungsmotoren, sind liegende und stehende Gießverfahren bekannt. Bei den liegenden Gießverfahren ist die Rotationsachse des zu gießenden Bauteils im Wesentlichen horizontal ausgerichtet. Dieses Verfahren kommt gegenwärtig mehrheitlich bei der Herstellung von Dieselkolben in Einsatz, die überwiegend mit Einlegeteilen, wie zum Beispiel Ringträgern und Salzkernen für den späteren Kühlkanal eingegossen werden. Zum Gießen von Kolben für Ottomotoren, die größtenteils keine Eingießteile aufweisen, kommt überwiegend die stehende Gießweise zum Einsatz.In rotationally symmetrical components, such as pistons for internal combustion engines, lying and stationary casting methods are known. In the horizontal casting process, the axis of rotation of the component to be cast is oriented substantially horizontally. This process is currently used mainly in the production of diesel pistons, which are mainly cast with inserts, such as ring carriers and salt cores for the subsequent cooling channel. For casting pistons for gasoline engines, which for the most part have no casting parts, the standing casting method is predominantly used.

STAND DER TECHNIKSTATE OF THE ART

Für die stehende Gießweise sind als Vorbenutzungsgegenstände Maschinen bekannt, die es ermöglichen, in einem bis zu 30 Grad aus der Vertikalen gekippten Zustand zu gießen.For the standing casting are known as Vorbenutzungsgegenstände machines, which make it possible to pour in a tilted up to 30 degrees from the vertical state.

Aus der DE 10 2006 058 145 A1 geht ein Gießverfahren hervor, bei dem das Einbringen des Materials nach dem Prinzip des Bodengusses und die Erstarrung nach dem Prinzip des Kopfgusses erfolgt. Die CH 135526 A betrifft ein Verfahren und eine Form zum Gießen von Verbundblöcken, bei dem während des Gießens die Winkellage der Form verändert wird.From the DE 10 2006 058 145 A1 is a casting process, in which the introduction of the material according to the principle of the bottom casting and the solidification takes place according to the principle of the head casting. The CH 135526 A relates to a method and a mold for casting composite blocks, in which during casting the angular position of the mold is changed.

DARSTELLUNG DER ERFINDUNGPRESENTATION OF THE INVENTION

Der Erfindung liegt die Aufgabe zugrunde, ein Gießverfahren und eine zugehörige Verwendung zu schaffen, das/die gegenüber den bekannten Vorgehensweisen verbessert ist, und zumindest einige der Vorteile sowohl der liegenden als auch der stehenden Gießweise zu kombinieren.It is an object of the present invention to provide a casting method and related use which is improved over the known approaches and to combine at least some of the advantages of both the horizontal and standing casting methods.

Die Lösung dieser Aufgabe erfolgt zum Einen durch das im Anspruch 1 beschriebene Verfahren.The solution of this object is achieved on the one hand by the method described in claim 1.

Demzufolge werden die den Gießhohlraum definierenden Werkzeugabschnitte nach dem Befüllen des Gießhohlraums oder zumindest gegen Ende dieses Vorgangs und vor dem Erstarren um zumindest 45 Grad um eine horizontale Achse derart gedreht oder gekippt, dass sich die Rotationsachse des zu gießenden Kolbens in Richtung der Vertikalen bewegt und sich dieser vorzugsweise zumindest annähert. Der Grundgedanke der Erfindung besteht somit im Wesentlichen darin, den Gießhohlraum in einer weitgehend "liegenden" Position des Gießhohlraums zu befüllen. Dies bietet besonders günstige Füllbedingungen, da vergleichsweise dünne Bereiche, wie zum Beispiel die verbleibende Wanddicke zwischen einem späteren Kühlkanal eines Kolbens und einem Ringträger besser befüllt werden können, als bei der stehenden Gießweise. Ferner werden Fremdstoffe, die in dem gegossenen Bauteil Fehlstellen darstellen, wie beispielsweise Oxide oder Alfinreste, bei dem Befüllen im liegenden Zustand in vorteilhafter Weise in Bereiche des Werkstücks geleitet, die später mit wenig Aufwand entfernt werden können oder ohnehin bearbeitet und damit entfernt werden müssen.Accordingly, after filling the casting cavity or at least towards the end of this process and before solidification, the tool cavity defining tooling sections are rotated or tilted at least 45 degrees about a horizontal axis so that the axis of rotation of the piston to be cast moves in the vertical direction this preferably at least approximates. The basic idea of the invention thus consists essentially in filling the casting cavity in a largely "lying" position of the casting cavity. This offers particularly favorable filling conditions, since comparatively thin regions, such as, for example, the remaining wall thickness between a later cooling channel of a piston and a ring carrier can be filled better than in the standing casting method. Furthermore, foreign substances that are defects in the cast component, such as oxides or almin residues, when filling in the lying state, are advantageously conducted into regions of the workpiece which can later be removed with little effort or have to be processed anyway and thus removed.

Die Erfindung nutzt die Vorteile der stehenden Gießweise insofern, als hier das Speisungsverhalten besser ist. Dies beruht im Wesentlichen darauf, dass ein weitgehend rotationssymmetrisches Bauteil gegossen wird, dessen Gießhohlraum bei der liegenden Gießweise mit einem einseitig liegenden Speiser gefüllt wird. Bei dem erfindungsgemäßen Kippen in Richtung der stehenden Gießweise wird das günstigere, weitgehend symmetrische Speisungsverhalten eines zentralen Speisers genutzt. Es wird insbesondere erwartet, dass durch die verbesserte Speisung die Porosität in dem gegossenen Bauteil verringert wird.The invention makes use of the advantages of the upright casting method insofar as the feeding behavior is better here. This is essentially due to the fact that a largely rotationally symmetrical component is cast, whose Gießhohlraum is filled in the horizontal casting with a single-sided feeder. In the tilting according to the invention in the direction of the stationary casting method, the cheaper, largely symmetrical feeding behavior of a central feeder is used. In particular, the improved feed is expected to reduce the porosity in the molded component.

Erfindungsgemäß kommt es darauf an, dass der Gießhohlraum insgesamt gekippt wird, so dass die Rotationsachse des zu gießenden Bauteils, wie beschrieben, ihre Ausrichtung ändert. Die im Stand der Technik bekannten Vorrichtungen und Verfahren, bei denen einzelne Werkzeugabschnitte, die an den Gießhohlraum angrenzen, diesen jedoch nicht insgesamt definieren, verschwenkbar sind, sind insoweit mit der erfindungsgemäßen Vorgehensweise nicht vergleichbar.According to the invention it is important that the casting cavity is tilted as a whole, so that the axis of rotation of the component to be cast, as described, changes its orientation. The known in the prior art devices and methods in which individual tool sections adjacent to the casting cavity, but not define this total, are pivotable, are so far not comparable with the inventive approach.

Das Werkzeug kann insgesamt als Kokille bezeichnet werden.The tool can be referred to as a mold.

Vorteilhafte Weiterbildungen des erfindungsgemäßen Verfahrens sind in den weiteren Ansprüchen beschrieben.Advantageous developments of the method according to the invention are described in the further claims.

Um das Verhalten des in den Gießhohlraum zu füllenden oder eingefüllten Materials in vorteilhafter Weise besonders fein beeinflussen zu können, wird bevorzugt, dass die Kippbewegung, mit anderen Worten, die Lage der Rotationsachse des Bauteils beim Einfüllen, und/oder der Kippwinkel und/oder die Lage der Rotationsachse des Bauteils beim Erstarren einstellbar sind. Durch eine flexible Einstellung des Kippwinkels kann in vorteilhafter Weise das Füllverhalten und/oder das Erstarrungsverhalten individuell beeinflusst werden.In order to be able to influence the behavior of the material to be filled or filled into the casting cavity in an advantageous manner, it is preferred that the tilting movement, in other words, the position of the axis of rotation of the component during filling, and / or the tilt angle and / or the Location of the axis of rotation of the component during solidification are adjustable. By a flexible adjustment of the tilt angle, the filling behavior and / or the solidification behavior can be influenced in an advantageous manner.

Um die Vorteile und die bestehende Erfahrung mit liegenden Gießweisen besonders umfangreich nutzten zu können, wird derzeit bevorzugt, dass die Rotationsachse des zu gießenden Kolbens beim Befüllen weitgehend horizontal ausgerichtet ist.In order to be able to make extensive use of the advantages and the existing experience with lying casting methods, it is presently preferred that the axis of rotation of the piston to be cast be largely aligned horizontally during filling.

Aus den gleichen Gründen bietet es Vorteile, wenn die Rotationsachse des zu gießenden Kolbens beim Erstarren weitgehend vertikal ausgerichtet ist.For the same reasons, it offers advantages when the axis of rotation of the piston to be cast is largely vertically aligned during solidification.

Für die Befüllung des Gießhohlraums wird zur Nutzung der Vorteile einer liegenden Gießweise bevorzugt, dass das flüssige Material an einem seitlichen Bereich des zu gießenden Kolbens eingefüllt wird. Mit anderen Worten befindet sich ein Anguss in einem seitlichen Bereich und bevorzugt etwa im unteren Drittel des bei liegender Gießweise zu befüllenden Gießhohlraums.For the filling of the casting cavity, it is preferred for the advantages of a horizontal casting method to be used that the liquid material is filled at a lateral region of the piston to be cast. In other words, there is a sprue in a lateral region and preferably in the lower third of the pouring cavity to be filled with a horizontal casting method.

Im Hinblick auf die erfindungsgemäße Verwendung eines Gießwerkzeugs bietet es Vorteile, wenn der Formhohlraum zumindest eine Aussparung aufweist, die sich bei liegender Gießweise in einem oberen, bevorzugt am höchsten Bereich des Formhohlraums befindet. Hierdurch bildet sich in diesem Bereich nach dem vollständigen Befüllen eine Art Schmutztasche, in die jegliche Verunreinigungen gespült wurden.With regard to the use of a casting tool according to the invention, it offers advantages if the mold cavity has at least one recess which is located in an upright casting manner in an upper, preferably at the highest region of the mold cavity. This forms in this area after the complete filling a kind of dirt bag, in which any impurities were flushed.

Die Vorteile der stehenden Gießweise lassen sich besonders umfangreich dadurch nutzen, dass ein Speiser nach dem Kippen des Gießhohlraums in einem oberen Bereich, insbesondere an einer anderen Stelle als der Anguss, angeordnet ist.The advantages of the upright casting method can be used particularly extensively by arranging a feeder after tilting the casting cavity in an upper region, in particular at a location other than the sprue.

Wie eingangs angedeutet, entfaltet das erfindungsgemäße Verfahren in besonderer Weise seine Vorteile, wenn das zu gießende Bauteil mit zumindest einem Einlegeteil, wie zum Beispiel einem Ringträger und/oder einem Kern für einen Kühlkanal eines Kolbens für einen Verbrennungsmotor gegossen wird. Wenngleich es leichter ist, und deshalb eine bevorzugte Möglichkeit darstellt, Eingießteile bei einer liegenden Ausrichtung des zu gießenden Bauteils einzulegen, wird es für bestimmte Anwendungsfälle bevorzugt, Eingießteile bei stehender Gießweise einzulegen, nachfolgend das Werkzeug zu kippen, und bei liegender Gießweise den Formhohlraum zu befüllen.As indicated at the outset, the method according to the invention unfolds its advantages in a particular way when the component to be cast is cast with at least one insert, such as a ring carrier and / or a core for a cooling channel of a piston for an internal combustion engine. Although it is easier, and therefore represents a preferred way to insert Eingießteile in a horizontal orientation of the component to be cast, it is preferred for certain applications to insert castings in standing casting, then the tool too tilt, and fill the mold cavity with lying casting.

Die Lösung der oben genannten Aufgabe erfolgt ferner durch die im Anspruch 8 beschriebene Verwendung eines Gießwerkzeugs, mit dem das vorangehend beschriebene Verfahren einschließlich seiner Vorteile vorrichtungstechnisch umgesetzt wird. Die bevorzugten Ausführungsformen des erfindungsgemäß verwendeten Gießwerkzeugs entsprechen im Wesentlichen denjenigen der vorangehend beschriebenen, bevorzugten Verfahren. Es sei außerdem erwähnt, dass die einzelnen Merkmale sämtliche hierin beschriebenen Verfahren auf die Vorrichtung anwendbar sind und umgekehrt.The solution of the above object is further achieved by the use of a casting tool described in claim 8, with which the method described above, including its advantages is implemented device technology. The preferred embodiments of the casting tool used according to the invention essentially correspond to those of the preferred methods described above. It should also be noted that the individual features of all the methods described herein are applicable to the device, and vice versa.

KURZE BESCHREIBUNG DER ZEICHNUNGBRIEF DESCRIPTION OF THE DRAWING

Die Figur zeigt schematisch die erfindungsgemäße Vorgehensweise beim Gießen eines Kolbens für einen Verbrennungsmotor.The figure shows schematically the procedure according to the invention in the casting of a piston for an internal combustion engine.

AUSFÜHRLICHE BESCHREIBUNG EINER AUSFÜHRUNGSFORM DER ERFINDUNGDETAILED DESCRIPTION OF AN EMBODIMENT OF THE INVENTION

Wie in der Figur zu erkennen ist, wird die erfindungsgemäße Vorgehensweise anhand des positiv dargestellten, zu gießenden Kolbens 10 für einen Verbrennungsmotor erläutert, es versteht sich jedoch, dass der Gießhohlraum, den der spätere Kolben einnimmt, zunächst leer ist und von geeigneten, nicht dargestellten, Werkzeugabschnitten definiert und umgrenzt wird. Wie in der Figur dargestellt, ist die Rotationsachse A des zu erzeugenden Kolbens im Ausgangszustand, das heißt zum Befüllen des Formhohlraums, weitgehend horizontal ausgerichtet. Etwa in der Mitte des Kolbens ist dessen Kolbenbolzenbohrung 12 zu erkennen. Ferner ist für das gezeigte Beispiel in dem einen Endbereich, der nach dem Kippen (vergleiche den rechten Teil der Figur) oben ist, ein Speiser 16 vorhanden. Während des Befüllens, befindet sich der Speiser an einer Seite des Werkstücks, nach dem Befüllen, und zum Erstarren des Werkstücks jedoch an der höchsten Stelle des Werkstücks. Mit 14 ist in der Figur ein Anguss bezeichnet, der sich beim Befüllen des Gießhohlraums seitlich, gemäß der Darstellung in der Figur "vor" dem Formhohlraum befindet. Der Anguss 14 ist bevorzugt an einer anderen Stelle als der Speiser 16, und bevorzugt getrennt hiervon vorgesehen. An der beim Eingießen höchsten Stelle des Formhohlraums wird bevorzugt eine Aussparung 18 in dem Formhohlraum vorgesehen, die eine Art Schmutztasche bildet, zu der Verunreinigungen gespült werden. Hier können diese bei der nachfolgenden Bearbeitung leicht entfernt werden. Die Aussparung 18 kann an einer beliebigen Stelle entlang der Rotationsachse A des Kolbens 10 vorgesehen sein.As can be seen in the figure, the procedure according to the invention is explained on the basis of the positive piston 10 to be cast for an internal combustion engine, however, it is understood that the casting cavity occupied by the later piston is initially empty and of suitable, not shown , Tool sections is defined and bounded. As shown in the figure, the axis of rotation A of the piston to be produced in the initial state, that is, for filling the mold cavity, largely aligned horizontally. Approximately in the middle of the piston whose piston pin bore 12 can be seen. Further, for the example shown, one feeder 16 is present in the one end region that is up after tipping (compare the right part of the figure). During filling, the feeder is located on one side of the workpiece, after filling, and for solidifying the workpiece but at the highest point of the workpiece. The reference numeral 14 denotes a sprue which is located laterally in the filling of the casting cavity, as shown in the figure "in front of" the mold cavity. The gate 14 is preferably provided at a location other than the feeder 16, and preferably separately therefrom. At the highest point of the molding cavity during pouring, a recess 18 is preferably provided in the mold cavity which forms a kind of dirt pocket to which impurities are flushed. Here they can be easily removed during subsequent processing. The recess 18 may be provided at an arbitrary position along the axis of rotation A of the piston 10.

Die Symmetrie des zu erzeugenden Kolbens 10 im Rahmen des Erstarrungsvorganges wird dadurch genutzt, dass der den späteren Kolben definierende Formhohlraum, wie im rechten Bereich der Figur gezeigt, nach dem Einfüllen des schmelzflüssigen Materials derart gekippt wird, dass die Rotationsachse des zu erzeugenden Bauteils weitgehend senkrecht ausgerichtet ist. Bei der gezeigten Ausführungsform befindet sich der Speiser 16 in diesem Zustand in einem oberen Bereich. In dieser Ausrichtung ist für die Erstarrungsbedingungen zu erwarten, dass sie an dem erzeugten Bauteil zu vorteilhaften Eigenschaften führen. Beispielsweise befinden sich Fremdstoffe, wie zum Beispiel Oxide und Alfinreste aufgrund des Einfüllens im liegenden Zustand in einem Randbereich des Kolbens, wo sie leicht entfernt werden können, und nicht, wie dies bei einem Einfüllen im stehenden Zustand zu erwarten ist, in einem Bodenbereich des Kolbens. Dieser Bodenbereich kann demnach durch die erfindungsgemäße Vorgehensweise als fertig gegossener und nicht mehr nachzubearbeitender Bodenbereich mit entsprechenden Konturen vorgesehen werden.The symmetry of the piston 10 to be generated in the course of the solidification process is utilized in that the mold cavity defining the later piston, as shown in the right-hand area of the figure, is tilted after filling of the molten material in such a way that the axis of rotation of the component to be produced is substantially perpendicular is aligned. In the embodiment shown, the feeder 16 is in an upper region in this state. In this orientation, it is to be expected for the solidification conditions that they lead to advantageous properties on the component produced. For example, foreign matters such as oxides and almin residues due to filling in the recumbent state are located in an edge portion of the piston where they can be easily removed and not in a bottom portion of the piston as expected in a standing state filling , Accordingly, this floor area can be provided by the procedure according to the invention as a finished cast floor area with corresponding contours that can no longer be reworked.

Claims (12)

  1. A method for casting a piston (10) for an internal combustion engine wherein the tool sections defining the casting cavity are tilted about a horizontal axis by at least 45 degrees after filling and before solidification such that the axis of rotation (A) of the component (10) moves in the direction of the vertical.
  2. The method according to Claim 1, characterised in that a tilt angle can be set.
  3. The method according to Claim 1 or 2, characterised in that the axis of rotation (A) of the piston (10) is aligned largely horizontally during filling.
  4. The method according to any of the preceding claims, characterised in that the axis of rotation (A) of the piston (10) is aligned largely vertically during solidification.
  5. The method according to any of the preceding claims, characterised in that the casting material is poured into a side region of the piston (10).
  6. The method according to any of the preceding claims, characterised in that after the tilting of the tool sections a feeder (16) is disposed in an upper region of the piston (10).
  7. The method according to any of the preceding claims, characterised in that at least one insert, such as e.g. a core for a cooling channel and/or a ring carrier, is cast into the piston (10).
  8. The use of a casting tool for casting a piston (10) for an internal combustion engine, wherein the tool sections defining the casting cavity can be tilted by at least 45 degrees about a horizontal axis after the filling and before the solidification such that the axis of rotation (A) of the piston (10) moves in the direction of the vertical, in a method according to any of Claims 1 to 7.
  9. The use according to Claim 8, characterised in that a tilt angle can be set.
  10. The use according to Claim 8 or 9, characterised in that a feeder is disposed in a region lying along the axis of rotation (A) of the piston (10) at the end of the piston (10).
  11. The use according to any of Claims 8 to 10, characterised in that the tool sections defining the casting cavity can be tilted such that a feeder (16) is disposed in an upper region after the tilting.
  12. The use according to any of Claims 8 to 11, characterised in that the mould cavity has at least one recess (18) which, when the axis of rotation of the piston (10) to be cast is aligned so as to be horizontal, is located in an upper region, preferably at a highest point.
EP13723434.0A 2012-04-27 2013-04-26 Casting process and mould Not-in-force EP2841223B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13723434T PL2841223T3 (en) 2012-04-27 2013-04-26 Casting process and mould

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201210207090 DE102012207090A1 (en) 2012-04-27 2012-04-27 Casting method and tool
PCT/EP2013/058725 WO2013160447A2 (en) 2012-04-27 2013-04-26 Casting process and mould

Publications (2)

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EP2841223A2 EP2841223A2 (en) 2015-03-04
EP2841223B1 true EP2841223B1 (en) 2018-05-30

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US (1) US20150122448A1 (en)
EP (1) EP2841223B1 (en)
CN (1) CN104271288B (en)
BR (1) BR112014026793B1 (en)
DE (1) DE102012207090A1 (en)
ES (1) ES2678621T3 (en)
HU (1) HUE037819T2 (en)
IN (1) IN2014KN02342A (en)
MX (1) MX364761B (en)
PL (1) PL2841223T3 (en)
WO (1) WO2013160447A2 (en)

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CH135526A (en) * 1928-01-27 1929-09-30 Limited Aluminium Method and mold for casting composite blocks.
US1993439A (en) * 1933-05-31 1935-03-05 Sterling Corp Molding machine
US2195960A (en) * 1934-08-15 1940-04-02 Morris Engineering Corp Apparatus for casting metal
US2620530A (en) * 1945-02-07 1952-12-09 United Engine & Machine Co Manufacture of pistons
CN85105357A (en) * 1985-07-09 1987-09-09 洛阳工学院 The metal mold that is used for rotary casting of piston
DE10019309C2 (en) * 2000-04-19 2002-04-18 Vaw Mandl & Berger Gmbh Linz Rotary casting method and apparatus
JP2002316253A (en) * 2001-04-19 2002-10-29 Taiheiyo Cement Corp Method for tilting-casting metal-ceramics composite material
DE102006058145A1 (en) * 2006-12-09 2008-06-12 Ksm Castings Gmbh Method for processing, in particular casting, a material, casting mold for carrying out the method and articles produced by the method or in the casting mold
EP3108800B1 (en) * 2008-07-18 2019-01-02 Boston Scientific Scimed, Inc. Endoscope with guide
BRPI0921178B1 (en) * 2008-11-24 2019-06-18 Nemak Dillingen Gmbh METHOD FOR FOUNDING A PIECE FROM A METALLIC BATH
JP4889783B2 (en) * 2009-11-17 2012-03-07 日信工業株式会社 Gravity casting method

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WO2013160447A2 (en) 2013-10-31
EP2841223A2 (en) 2015-03-04
BR112014026793A2 (en) 2017-06-27
PL2841223T3 (en) 2018-09-28
US20150122448A1 (en) 2015-05-07
MX2014013032A (en) 2015-02-04
IN2014KN02342A (en) 2015-05-01
CN104271288A (en) 2015-01-07
HUE037819T2 (en) 2018-09-28
BR112014026793B1 (en) 2020-01-14
CN104271288B (en) 2016-10-19
DE102012207090A1 (en) 2013-10-31
MX364761B (en) 2019-05-06
WO2013160447A3 (en) 2014-02-27
ES2678621T3 (en) 2018-08-14

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