EP2552623A1 - Method and device for casting a piston for an internal combustion engine - Google Patents

Method and device for casting a piston for an internal combustion engine

Info

Publication number
EP2552623A1
EP2552623A1 EP11710776A EP11710776A EP2552623A1 EP 2552623 A1 EP2552623 A1 EP 2552623A1 EP 11710776 A EP11710776 A EP 11710776A EP 11710776 A EP11710776 A EP 11710776A EP 2552623 A1 EP2552623 A1 EP 2552623A1
Authority
EP
European Patent Office
Prior art keywords
piston
piston pin
coolant
region
area
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.)
Granted
Application number
EP11710776A
Other languages
German (de)
French (fr)
Other versions
EP2552623B1 (en
Inventor
Silvio Stephan
Isabella Sobota
Rolf Pfeifer
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.)
Federal Mogul Nuernberg GmbH
Original Assignee
Federal Mogul Nuernberg 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 Federal Mogul Nuernberg GmbH filed Critical Federal Mogul Nuernberg GmbH
Publication of EP2552623A1 publication Critical patent/EP2552623A1/en
Application granted granted Critical
Publication of EP2552623B1 publication Critical patent/EP2552623B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/06—Permanent moulds for shaped castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D25/00—Special casting characterised by the nature of the product
    • B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B22C9/101—Permanent cores
    • 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
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00—Pistons 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F2200/00—Manufacturing
    • F02F2200/06—Casting

Definitions

  • the invention relates to a method and a device for casting a piston for an internal combustion engine
  • the required strength can be achieved in particular by rapid quenching of the casting. According to the current procedure, such quenching takes place only outside the mold, when the entire piston is solidified so far that it can be removed from the so-called mold.
  • DE 10 2005 027 540 A1 relates to a method for
  • the invention has for its object to provide a method and apparatus for casting of pistons for
  • At least one sleeve provided there is already retracted after an edge-layer solidification in the region of at least one piston pin bore, and this region is cooled by coolant supplied by at least one sleeve (14). This allows the range of
  • piston pin bore Essentially around a substantially cylindrical or slightly conical casting core, which keeps the space later provided for the piston pin in a sense, and thus around which thus the material surrounding the later piston pin bore is formed.
  • the notion of the piston pin bore is to emphasize that this need not necessarily be formed by drilling as a procedural approach. Rather, it is usually two substantially cylindrical openings in which the two ends of a piston pin are received, while therebetween in the installed state, the connecting rod.
  • the material bypassing the piston pin bores can thus be cooled and quenched more quickly by the procedure according to the invention than was hitherto possible, so that a faster and directional solidification is possible, which leads to increased strength.
  • the solidification speed of the piston material is increased, in particular in the area of the piston pin bores, which leads to quenching and increased strength.
  • a directional solidification can be generated.
  • Cooling of the area of the piston pin bores preferably to a lesser extent, furthermore coolant, in particular
  • the up to the retraction of the core is applied to this core adjacent material to realize here also increased strength.
  • the cooling to a reduced extent can be done by the supply of coolant, in particular compressed air through exactly one quill.
  • Device according to the invention correspond to the method features described above.
  • Fig. 1 is a schematic sectional view of a
  • Fig. 2 is a schematic sectional view according to the
  • Fig. 3 is a schematic sectional view when supplying
  • Fig. 4 is a schematic sectional view according to the
  • the casting device 20 for a piston 10 shown schematically in section in FIG. 1 has various elements which initially define the outer shape of the piston. This applies to the tool part 22 in the region of the piston crown, the
  • Embodiment two sleeves 14 provided which are slightly conical. Furthermore, to keep the area between the piston pin bores 14 free for later reception of the connecting rod, there is a core 16 which extends into the area above the pin bores 12 and against which the sleeves lie. After the material for the piston 10 has been filled in liquid form into the casting device 20 designed in this way, a solidification of the material occurs, starting from the edge layers.
  • Piston pin holes 12 takes place, at least one sleeve 14, in the embodiment shown, both sleeves 14, retracted to expose the region of the piston pin holes 12 in particular on the inside thereof.
  • this is realized in the illustrated embodiment by the supply of compressed air through the sleeves 14. In particular, these have in the shown. Case central inflow channels 28 on. Through the described channels 28 compressed air flows to the inner surfaces of the piston pin holes 12 so that they are cooled and quenched and subsequently have an increased strength.
  • Piston pin holes which previously applied to the core 16, expose and cause cooling and deterrence here, even before the piston out of the total
  • Casting device or mold can be removed from the mold.

Abstract

In a method for casting a piston for an internal combustion engine, after solidification of the surface layer in the region of the piston-pin bores (12), at least one mandrel provided there is withdrawn and the region of at least one piston-pin bore (12) is cooled by coolant supplied through at least one mandrel. A device for casting pistons for internal combustion engines has at least one mandrel which can be withdrawn from the region of a piston-pin bore (12) and through which a coolant for cooling the region of the piston-pin bores (12) can be supplied.

Description

Verfahren und Vorrichtung zum Gießen eines Kolbens für einen Verbrennungsmotor  Method and device for casting a piston for an internal combustion engine
Technisches Gebiet Technical area
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Gießen eines Kolbens für einen Verbrennungsmotor, The invention relates to a method and a device for casting a piston for an internal combustion engine,
Stand der Technik State of the art
Bei Kolben von Verbrennungsmotoren ist die Festigkeit der so genannten Kolbenbolzenbohrungen, in denen der Kolbenbolzen zur Verbindung mit einem Pleuel aufgenommen ist, von In pistons of internal combustion engines, the strength of the so-called piston pin holes, in which the piston pin is received for connection to a connecting rod of
besonderer Wichtigkeit . Die erforderliche Festigkeit kann insbesondere durch eine schnelle Abschreckung des Gusses erfolgen. Nach der derzeitigen Vorgehensweise erfolgt ein derartiges Abschrecken erst außerhalb der Kokille, wenn der gesamte Kolben soweit erstarrt ist, dass er aus der so genannten Kokille entformt werden kann. special importance. The required strength can be achieved in particular by rapid quenching of the casting. According to the current procedure, such quenching takes place only outside the mold, when the entire piston is solidified so far that it can be removed from the so-called mold.
Die DE 10 2005 027 540 A1 betrifft ein Verfahren zur DE 10 2005 027 540 A1 relates to a method for
Herstellung eines Kolbens für Verbrennungsmotoren, bei dem die Gießform geöffnet wird, bevor die Schmelze im Bereich eines Speisers erstarrt ist. Nachfolgend kann der Kolben entnommen und außerhalb der Gießform gekühlt werden. Darstellung der Erfindung Production of a piston for internal combustion engines, in which the mold is opened before the melt is solidified in the region of a feeder. Subsequently, the piston can be removed and cooled outside the mold. Presentation of the invention
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung zum Gießen von Kolben für The invention has for its object to provide a method and apparatus for casting of pistons for
Verbrennungsmotoren zu schaffen, mit denen die Festigkeit insbesondere im Bereich der KoIbenbolzenbohrungen verbessert werden kann. To provide internal combustion engines, with which the strength can be improved, especially in the field of KoIbenbolzenbohrungen.
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 wird bereits nach einer Randschichterstarrung im Bereich zumindest einer Kolbenbolzenbohrung zumindest eine dort vorgesehene Pinole zurückgezogen und dieser Bereich durch durch zumindest eine Pinole (14) zugeführtes Kühlmittel gekühlt. Hierdurch kann der Bereich der As a result, at least one sleeve provided there is already retracted after an edge-layer solidification in the region of at least one piston pin bore, and this region is cooled by coolant supplied by at least one sleeve (14). This allows the range of
Kolbenbolzenbohrungen, insbesondere die weitgehend Piston pin holes, especially the largely
zylindrische Innenfläche derselben schneller gekühlt und abgeschreckt werden, als dies bei der derzeitigen cylindrical inner surface of the same cooled and quenched faster than that in the current
Vorgehensweise möglich ist, so dass die Festigkeit in diesen Bereichen in vorteilhafter Weise erhöht wird. Hierzu muss lediglich eine gewisse Randschichterstarrung abgewartet werden, die es ermöglicht, eine dort vorgesehene Pinole zurückzuziehen, ohne die Form des Kolbens in diesem Bereich zu gefährden. Bei einer Pinole handelt es sich im Procedure is possible, so that the strength is increased in these areas in an advantageous manner. For this purpose, only a certain surface layer solidification must be awaited, which makes it possible to withdraw a quill provided there, without jeopardizing the shape of the piston in this area. When a quill is in the
Wesentlichen um einen weitgehend zylindrischen oder leicht konischen Gießkern, der beim Gießen gewissermaßen den später für den Kolbenbolzen vorgesehenen Raum freihält und um den herum somit das die spätere Kolbenbolzenbohrung umgebende Material geformt wird. Zum Begriff der Kolbenbolzenbohrung ist zu betonen, dass diese nicht notwendigerweise durch Bohren als verfahrensmäßige Vorgehensweise ausgebildet sein muss. Vielmehr handelt es sich um üblicherweise zwei im Wesentlichen zylindrische Öffnungen, in denen die beiden Enden eines Kolbenbolzens aufgenommen werden, während sich dazwischen im Einbauzustand das Pleuel befindet. Das die Kolbenbolzenbohrungen umgehende Material kann durch die erfindungsgemäße Vorgehensweise somit schneller gekühlt und abgeschreckt werden, als dies bislang möglich ist, so dass eine schnellere und gerichtetere Erstarrung möglich ist, was zu einer erhöhten Festigkeit führt. Mit anderen Worten wird die Erstarrungsgeschwindigkeit des Kolbenmaterials insbesondere im Bereich der Kolbenbolzenbohrungen erhöht, was zu einem Abschrecken und einer erhöhten Festigkeit führt. Ferner kann durch die beschriebene Vorgehensweise auch in anderen Bereichen des Kolbens eine gerichtete Erstarrung erzeugt werden. Essentially around a substantially cylindrical or slightly conical casting core, which keeps the space later provided for the piston pin in a sense, and thus around which thus the material surrounding the later piston pin bore is formed. The notion of the piston pin bore is to emphasize that this need not necessarily be formed by drilling as a procedural approach. Rather, it is usually two substantially cylindrical openings in which the two ends of a piston pin are received, while therebetween in the installed state, the connecting rod. The material bypassing the piston pin bores can thus be cooled and quenched more quickly by the procedure according to the invention than was hitherto possible, so that a faster and directional solidification is possible, which leads to increased strength. In other words, the solidification speed of the piston material is increased, in particular in the area of the piston pin bores, which leads to quenching and increased strength. Furthermore, by the described procedure also in other areas of the piston a directional solidification can be generated.
Bevorzugte Weiterbildungen des erfindungsgemäßen Verfahrens sind in den weiteren Ansprüchen beschrieben. Preferred developments of the method according to the invention are described in the further claims.
Es wird derzeit bevorzugt, die Kühlung der It is currently preferred to refrigerate the
Kolbenbolzenbohrungen mittels Druckluft vorzunehmen. Die hierfür erforderlichen Druckluftleitungen können, so haben erste Überlegungen ergeben, für sämtliche Größen von Kolben, insbesondere Dieselkolben vorgesehen werden. Make piston pin bores by means of compressed air. The compressed air lines required for this purpose can, as first considerations have shown, be provided for all sizes of pistons, in particular diesel pistons.
Besonders bevorzugt wird derzeit, zwei Binolen gleichzeitig zurückzuziehen und den Bereich der Kolbenbolzenbohrungen durch gleichzeitig durch die beiden Binolen zugeführtes At the present time, it is particularly preferred to retract two binocups at the same time and to move the area of the piston pin bores through the same time through the two binoculars
Kühlmittel zu kühlen. Cool coolant.
Es hat sich ferner als vorteilhaft erwiesen, einen zwischen den Kolbenbolzenbohrungen vorgesehenen Kern zurückziehbar zu gestalten. Dadurch kann insbesondere nach einer ersten It has also proved to be advantageous to make retractable a provided between the piston pin bores core. As a result, in particular after a first
Kühlung des Bereichs der Kolbenbolzenbohrungen, bevorzugt in vermindertem Umfang, weiterhin Kühlmittel, insbesondere Cooling of the area of the piston pin bores, preferably to a lesser extent, furthermore coolant, in particular
Druckluft, zugeführt werden, so dass auch der Bereich Compressed air, fed, so that too the area
zwischen den Kolbenbolzenbohrungen gekühlt werden kann. Mit anderen Worten wird das bis zum Zurückziehen des Kerns an diesem Kern anliegende Material gekühlt, um auch hier eine erhöhte Festigkeit zu realisieren. Die Kühlung in vermindertem Umfang kann durch die Zuführung von Kühlmittel, insbesondere Druckluft durch genau eine Pinole erfolgen. can be cooled between the piston pin holes. In other words, the up to the retraction of the core is applied to this core adjacent material to realize here also increased strength. The cooling to a reduced extent can be done by the supply of coolant, in particular compressed air through exactly one quill.
Insbesondere hat es sich als vorteilhaft herausgestellt, Kühlmittel zunächst durch zwei Pinolen zuzuführen und nachfolgend, nachdem ein Kern zurückgezogen wurde, lediglich durch genau eine Pinole zuzuführen. Hierdurch wird ein besonders effizientes Durchströmen des Bereichs zwischen den Kolbenbolzenbohrungen mit Kühlmittel bewirkt. In particular, it has been found to be advantageous to supply coolant first through two sleeves and subsequently, after a core has been withdrawn, to supply it only by means of exactly one sleeve. This causes a particularly efficient flow through the area between the piston pin holes with coolant.
Die Lösung der oben genannten Aufgabe erfolgt ferner durch die im Anspruch 7 beschriebene Gießvorrichtung, die The solution of the above object is further achieved by the casting apparatus described in claim 7, the
entsprechend dem erfindungsgemäßen Verfahren zumindest eine aus dem Bereich einer Kolbenbolzenbohrung zurückziehbare Pinole, durch die ein Kühlmittel zum Kühlen des Bereichs der Kolbenbolzenbohrungen zuführbar ist. Durch eine derartige Vorrichtung können die oben genannten Vorteile erreicht werden. Die bevorzugten Ausführungsformen der according to the inventive method at least one retractable from the range of a piston pin bore sleeve, through which a coolant for cooling the region of the piston pin holes can be fed. By such a device, the above advantages can be achieved. The preferred embodiments of
erfindungsgemäßen Vorrichtung entsprechen den vorangehend beschriebenen Verfahrensmerkmalen . Device according to the invention correspond to the method features described above.
Kurze Beschreibung der Zeichnungen Brief description of the drawings
Nachfolgend wird ein bevorzugtes Ausführungsbeispiel der Erfindung näher erläutert. Es zeigen: Hereinafter, a preferred embodiment of the invention will be explained in more detail. Show it:
Fig. 1 eine schematische Schnittansicht einer Fig. 1 is a schematic sectional view of a
Gießvorrichtung mit einem gegossenen Kolben während einer ersten Erstarrungsphase;  Casting device with a cast piston during a first solidification phase;
Fig. 2 eine schematische Schnittansicht nach dem Fig. 2 is a schematic sectional view according to the
Zurückziehen der Pinolen;  Pulling back the sleeves;
Fig. 3 eine schematische Schnittansicht beim Zuführen von Fig. 3 is a schematic sectional view when supplying
Druckluft durch die Pinolen; und Fig. 4 eine schematische Schnittansicht nach dem Compressed air through the sleeves; and Fig. 4 is a schematic sectional view according to the
Zurückziehen eines Werkzeugkerns.  Retracting a tool core.
Ausführliche Beschreibung einer bevorzugten Ausführungsform der Erfindung Detailed description of a preferred embodiment of the invention
Die in Fig. 1 schematisch im Schnitt gezeigte Gießvorrichtung 20 für einen Kolben 10 weist verschiedene Elemente auf, die zunächst die Außenform des Kolbens definieren. Dies gilt für das Werkzeugteil 22 im Bereich des Kolbenbodens, die The casting device 20 for a piston 10 shown schematically in section in FIG. 1 has various elements which initially define the outer shape of the piston. This applies to the tool part 22 in the region of the piston crown, the
Werkzeugteile 24 im Bereich des KoIbenmantels sowie einen so genannten Fixierring 26 im Bereich der Unterseite des Tool parts 24 in the region of the KoIbenmantels and a so-called fixing ring 26 in the region of the underside of the
Kolbens . Um die mechanische Nachbearbeitung im Bereich der Kolbenbolzenbohrungen 12 möglichst gering zu halten und das Zurückziehen zu ermöglichen, sind bei der gezeigten Piston. In order to keep the mechanical post-processing in the area of the piston pin bores 12 as low as possible and to allow the retraction are shown in the
Ausführungsform zwei Pinolen 14 vorgesehen, die leicht konisch ausgebildet sind. Ferner ist zum Freihalten des Bereichs zwischen den Kolbenbolzenbohrungen 14 für die spätere Aufnahme des Pleuels ein Kern 16 vorhanden, der bis in den Bereich oberhalb der Bolzenbohrungen 12 reicht, und an dem die Pinolen anliegen. Nachdem das Material für den Kolben 10 in flüssiger Form in die derart gestaltete Gießvorrichtung 20 eingefüllt wurde, erfolgt eine Erstarrung des Materials, ausgehend von den Randschichten. Embodiment two sleeves 14 provided which are slightly conical. Furthermore, to keep the area between the piston pin bores 14 free for later reception of the connecting rod, there is a core 16 which extends into the area above the pin bores 12 and against which the sleeves lie. After the material for the piston 10 has been filled in liquid form into the casting device 20 designed in this way, a solidification of the material occurs, starting from the edge layers.
Wie in Fig. 2 gezeigt, wird nach einer ersten As shown in Fig. 2, after a first
Randschichterstarrung, die insbesondere auch in den Randschichterstarrung, in particular in the
Kolbenbolzenbohrungen 12 stattfindet, zumindest eine Pinole 14, bei der gezeigten Ausführungsbeispiel beide Pinolen 14, zurückgezogen, um den Bereich der Kolbenbolzenbohrungen 12 insbesondere an der Innenseite derselben freizulegen. Piston pin holes 12 takes place, at least one sleeve 14, in the embodiment shown, both sleeves 14, retracted to expose the region of the piston pin holes 12 in particular on the inside thereof.
Erfindungsgemäß erfolgt nachfolgend eine gezielte Kühlung dieser Innenflächen. According to the invention, a targeted cooling of these inner surfaces takes place subsequently.
Wie in Fig. 3 gezeigt ist, wird dies bei dem dargestellten Ausführungsbeispiel durch die Zuführung von Druckluft durch die Pinolen 14 realisiert. Insbesondere weisen diese in dem gezeigten. Fall zentrale Zuströmkanäle 28 auf. Durch die beschriebenen Kanäle 28 strömt Druckluft an die Innenflächen der Kolbenbolzenbohrungen 12, so dass diese gekühlt und abgeschreckt werden und nachfolgend eine erhöhte Festigkeit aufweisen. As shown in Fig. 3, this is realized in the illustrated embodiment by the supply of compressed air through the sleeves 14. In particular, these have in the shown. Case central inflow channels 28 on. Through the described channels 28 compressed air flows to the inner surfaces of the piston pin holes 12 so that they are cooled and quenched and subsequently have an increased strength.
In Fig. 4 ist die bevorzugte Vorgehensweise dahingehend gezeigt, dass nachfolgend der Kern 16 zurückgezogen wird, um auch die Innenflächen im Bereich zwischen den In Fig. 4, the preferred procedure is shown in that subsequently the core 16 is retracted to also the inner surfaces in the area between the
Kolbenbolzenbohrungen, die bislang an den Kern 16 anlagen, freizulegen und auch hier eine Kühlung und Abschreckung zu bewirken, noch bevor der Kolben insgesamt aus der Piston pin holes, which previously applied to the core 16, expose and cause cooling and deterrence here, even before the piston out of the total
Gießvorrichtung oder Kokille entformt werden kann. Bevorzugt erfolgt die Kühlung des Bereichs zwischen den Casting device or mold can be removed from the mold. Preferably, the cooling of the area between the
Kolbenbolzenbohrungen nur durch eine Pinole 14. Piston pin holes only through a quill 14.

Claims

Patentansprüche claims
1. Verfahren zum Gießen eines Kolbens (10) für einen A method of casting a piston (10) for a
Verbrennungsmotor, bei dem nach einer  Internal combustion engine, after which a
Randschichterstarrung im Bereich der  Boundary layer solidification in the area of
Kolbenbolzenbohrungen (12) zumindest eine dort  Piston pin holes (12) at least one there
vorgesehene Pinole (14) zurückgezogen und der Bereich zumindest einer Kolbenbolzenbohrung (12) durch durch zumindest eine Pinole (14) zugeführtes Kühlmittel gekühlt wird.  provided quill (14) withdrawn and the region of at least one piston pin bore (12) is cooled by at least one quill (14) supplied coolant.
2. Verfahren nach Anspruch 1, 2. The method according to claim 1,
dadurch g e k e n n z e i c h n e t , dass  By doing so, that is
die Kühlung mittels Druckluft erfolgt.  the cooling takes place by means of compressed air.
3. Verfahren nach Anspruch 1 oder 2, 3. The method according to claim 1 or 2,
dadurch g e k e n n z e i c h n e t , dass  By doing so, that is
zwei Pinolen(14) gleichzeitig zurückgezogen werden, und der Bereich zweier Kolbenbolzenbohrungen (12) durch gleichzeitig durch die Pinolen (14) zugeführtes  two sleeves (14) are withdrawn simultaneously, and the area of two piston pin bores (12) fed simultaneously through the sleeves (14)
Kühlmittel gekühlt wird.  Coolant is cooled.
4. Verfahren nach einem der Ansprüche 1 bis 3, 4. The method according to any one of claims 1 to 3,
dadurch g e k e n n z e i c h n e t , dass  By doing so, that is
nach einer Randschichterstarrung im Bereich zwischen den Kolbenbolzenbohrungen (12) zumindest ein Kern (16) zurückgezogen wird, und der Bereich zwischen den  after a boundary layer solidification in the area between the piston pin bores (12) at least one core (16) is withdrawn, and the area between the
Kolbenbolzenbohrungen (12), vorzugsweise in vermindertem Umfang, gekühlt wird.  Piston pin holes (12), preferably cooled to a reduced extent.
5. Verfahren nach einem der Ansprüche 1 bis 4, 5. The method according to any one of claims 1 to 4,
dadurch g e k e n n z e i c h n e t , dass  By doing so, that is
ein Kühlmittel, insbesondere Luft, zunächst durch zwei und nachfolgend durch genau eine Pinole (14) zugeführt wird. a coolant, in particular air, is first supplied by two and subsequently by exactly one quill (14).
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch g e k e n n z e i c h n e t , dass 6. The method according to any one of claims 1 to 5, characterized g e k e n e c i n e t that
ein Kühlmittel, insbesondere Luft, zunächst durch zwei Pinolen und nachfolgend, nachdem ein Kern zurückgezogen wurde, lediglich durch genau eine Pinole (14) zugeführt wird, wobei das Kühlmittel durch den Bereich zwischen den Kolbenbolzenbohrungen (12} strömt.  a coolant, in particular air, first by two sleeves and subsequently, after a core has been withdrawn, only by exactly one quill (14) is supplied, wherein the coolant flows through the region between the piston pin holes (12}.
7. Vorrichtung (20) zum Gießen von Kolben (10) für 7. Device (20) for casting pistons (10) for
Verbrennungsmotoren mit zumindest einer aus dem Bereich einer Kolbenbolzenbohrung (12) zurückziehbaren Pinole (14) , durch die ein Kühlmittel zum Kühlen des Bereichs der Kolbenbolzenbohrungen (12) zuführbar ist.  Internal combustion engines with at least one sleeve (14) retractable from the region of a piston pin bore (12) through which a coolant for cooling the region of the piston pin bores (12) can be fed.
8. Vorrichtung nach Anspruch 7, 8. Apparatus according to claim 7,
dadurch g e k e n n z e i c h n e t , dass  By doing so, that is
eine Druckluftzuführvorrichtung vorgesehen ist.  a Druckluftzuführvorrichtung is provided.
9. Vorrichtung nach einem der Ansprüche 7 oder 8, 9. Device according to one of claims 7 or 8,
ferner mit zumindest einem aus dem Bereich zwischen den Kolbenbolzenbohrungen (12) zurückziehbaren Kern (16).  further comprising at least one core (16) retractable from the area between the piston pin bores (12).
EP11710776.3A 2010-03-26 2011-03-24 Method and device for casting a piston for an internal combustion engine Not-in-force EP2552623B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010003346A DE102010003346A1 (en) 2010-03-26 2010-03-26 Method and device for casting a piston for an internal combustion engine
PCT/EP2011/054530 WO2011117342A1 (en) 2010-03-26 2011-03-24 Method and device for casting a piston for an internal combustion engine

Publications (2)

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EP2552623A1 true EP2552623A1 (en) 2013-02-06
EP2552623B1 EP2552623B1 (en) 2017-06-21

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EP11710776.3A Not-in-force EP2552623B1 (en) 2010-03-26 2011-03-24 Method and device for casting a piston for an internal combustion engine

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US (1) US8720528B2 (en)
EP (1) EP2552623B1 (en)
DE (1) DE102010003346A1 (en)
WO (1) WO2011117342A1 (en)

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DE102010003345B4 (en) * 2010-03-26 2012-02-23 Federal-Mogul Nürnberg GmbH Method and device for casting a piston for an internal combustion engine
DE102011086411A1 (en) * 2011-11-15 2013-05-16 Mahle International Gmbh Mold for a piston
DE102012103884A1 (en) * 2012-05-03 2013-11-07 Fritz Winter Eisengiesserei Gmbh & Co. Kg Method for casting a casting provided with at least one passage opening
WO2016089368A1 (en) * 2014-12-02 2016-06-09 Halliburton Energy Services, Inc. Heat-exchanging mold assemblies for infiltrated downhole tools
CN108453231B (en) * 2018-02-01 2020-07-24 浙江博德智能科技有限公司 Shape-following cold control mold and using method thereof

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Also Published As

Publication number Publication date
US20130092341A1 (en) 2013-04-18
WO2011117342A1 (en) 2011-09-29
DE102010003346A1 (en) 2011-09-29
EP2552623B1 (en) 2017-06-21
US8720528B2 (en) 2014-05-13

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