EP2945760B1 - Casting mold for producing castings, in particular cylinder blocks and cylinder heads, having functional connection of the feeder - Google Patents
Casting mold for producing castings, in particular cylinder blocks and cylinder heads, having functional connection of the feeder Download PDFInfo
- Publication number
- EP2945760B1 EP2945760B1 EP14700923.7A EP14700923A EP2945760B1 EP 2945760 B1 EP2945760 B1 EP 2945760B1 EP 14700923 A EP14700923 A EP 14700923A EP 2945760 B1 EP2945760 B1 EP 2945760B1
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- European Patent Office
- Prior art keywords
- feeder
- casting
- casting mold
- cast
- mold
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- 238000005266 casting Methods 0.000 title claims description 127
- 239000000155 melt Substances 0.000 claims description 28
- 238000001816 cooling Methods 0.000 claims description 24
- 230000005484 gravity Effects 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 238000007711 solidification Methods 0.000 description 17
- 230000008023 solidification Effects 0.000 description 17
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 235000000396 iron Nutrition 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003110 molding sand Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
-
- 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
-
- 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
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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
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
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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
- B22D35/00—Equipment for conveying molten metal into beds or moulds
Definitions
- the invention relates to a casting mold for producing cast parts from a metal melt, the casting mold defining a mold cavity and comprising molded parts that determine the shape of the cast part to be cast, as well as a feeder or separate pouring runners or pouring channels through which the melt enters the mold cavity when pouring got.
- the casting mold according to the invention is set up specifically for the casting of cast parts using gravity casting.
- a casting mold for a rail wheel for rail vehicles is known in which the melt is fed from a feeder to the mold cavity via a central pouring runner. This branches out into different channels that flow out on different horizontal levels.
- Various measures have been taken to equalize the solidification, including components that act as cooling irons, through which the cooling is to be supported locally.
- arc-shaped cooling irons are provided which cover the end face of the hub.
- melt is supplied via a central channel from which various channels branch off, which in turn open out on different horizontal planes in the respective mold cavity. Separate runners, which bypass a section of the casting mold in which the melt solidifies prematurely, are not provided.
- the mold cavity is delimited by molded parts that determine the shape of the cast part.
- a feeder is provided, which is connected to the mold cavity of the casting mold via a pouring runner.
- the pouring runner merges into various horizontally and vertically branching out from it pouring runners or channels, the mouths of which are each arranged in different levels of the mold cavity.
- An annular cooling element is positioned between the two sections in such a way that melt can flow from one section to the other section via the opening enclosed by the cooling element.
- the mold is filled via the connecting channels opening into the bottom of the mold chamber from bottom to top against the force of gravity.
- the invention has achieved this object by a casting mold having the features specified in claim 1.
- a metal melt is poured in a manner known per se via a feeder or separate pouring runners or pouring channels into a mold cavity that is delimited by a casting mold and depicting the cast part.
- the casting mold includes molded parts that determine the shape of the cast part to be cast.
- the melt is now via at least two connections, at least one of which is designed as an additional channel leading through one of the molded parts and independent of the contour of the cast part to be cast, in at least two areas that are assigned to different levels of the cast part to be cast, passed into the mold cavity.
- a casting mold according to the invention for producing cast parts from a metal melt delimits a mold cavity and has mold parts that determine the shape of the cast part to be cast, as well as a feeder or separate pouring runners or pouring channels over which during pouring the molten metal enters the mold cavity.
- the feeder or the pouring runners or pouring channels are connected to at least two areas of the mold cavity by at least two connections, at least one of which is designed as an additional channel leading through one of the molded parts and independent of the contour of the cast part to be cast , which are assigned to different levels of the component to be cast.
- the melt can thus get into the casting mold in the usual way from the feeder or from the respective provided runner or pouring channels in the usual manner via channels which form part of this casting in the finished cast part.
- the molten metal can flow into the mold cavity via at least one further connection which, as an additional channel, which is independent of the subsequent shape of the cast part to be produced, is guided through one of the mold parts that determine the contour of the cast part.
- the thermal centers in the interior of the component are connected directly to the feeder connected to the casting mold through a suitable design of the components of a casting mold that determine the shape of the cast part. This takes place through additional feed channels, which are guided through the contouring molded parts and are connected in the critical areas to the component or to the mold cavity of the casting mold that determines the shape of the component.
- All Understood parts of the casting mold through which the shape of the casting is determined. These include, in particular, casting cores that are inserted into the casting mold in order to produce recesses, cavities and the like on or in the cast part.
- the invention thus provides a casting mold for producing cast parts, in which the mold cavity of the casting mold that depicts the cast part is filled with liquid metal, with molded parts being inserted into the mold cavity that depict the subsequent component geometry.
- the invention is particularly suitable for gravity casting processes, including all conventional and dynamic chill casting processes, as well as low-pressure casting processes.
- the invention is not only suitable for all casting processes in which the feeder is arranged on the upper side of the casting mold during solidification.
- the feeder is connected in different component levels as seen in the direction of solidification, i.e. as seen in the direction in which the molten metal solidifies in the casting mold after it has been poured off.
- feeder connections or feed channels are provided in the casting mold for this purpose, which do not belong to the component geometry and which can reach certain sections or areas of the mold cavity of the casting mold via the melt.
- the feeder connections or channels formed in at least one of the contour-forming molded parts are guided in such a way that melt, bypassing the zone in which the respective cooling element causes accelerated solidification, is guided to a zone of the cast part in which solidification is supposed to proceed more slowly.
- the zone of slow solidification is reliably supplied with melt even if there is a zone between the feeder and the relevant zone in which accelerated cooling is to take place and in which there is consequently the risk that material that has already solidified will enter the inflow hinders further melt to the zone that is supposed to solidify more slowly.
- the invention complexly shaped cast parts can be produced in which solidifications that occur at different speeds at different rates are possible without the complexity of the casting mold increasing significantly.
- the cast parts for the production of which the invention is particularly suitable include cylinder heads and cylinder blocks for internal combustion engines.
- the invention ensures the production of flawless cast components, which makes it particularly suitable for casting cylinder blocks while meeting very high strength requirements in the area of the main bearing and in the area of the cylinder web.
- the feeder core 1 acting as a gravity feeder forms the upper end of the respective casting mold G1, G2.
- the feeder core 1 surrounds a feeder 2, via which the mold cavity 3, which is respectively surrounded by the casting mold G1, G2, is filled with melt.
- the casting mold G1, G2 can also be filled in a manner known per se via separate pouring runners and pouring channels.
- the molded parts 4a-4c as well as 5 and 6 are each formed in a manner known per se as casting cores and formed from molding sand. They are set in the mold cavity 3 delimited by the respective outer mold parts 7 of the casting molds G1, G2 and form recesses, cavities and channels in the casting to be cast. Accordingly, the mold parts 4a-4c and 5, 6 are destroyed when the casting mold G1, G2 is removed from the core. While the molded parts 4a-4c and 5, 6 determine the inner contour of the cast part to be cast, the outer parts 7 determine its outer contour.
- the mold parts 5, 6 are positioned within the respective mold cavity 3 in such a way that their upper side adjoins the respective feeder core 1 and at the same time are arranged centrally in the mold cavity 3 of the respective casting mold G1, G2. In this way, the molded parts 5, 6 delimit two lateral areas 8, 9 from one another within the mold cavity 3, which areas represent, for example, the side walls of the cast part to be cast.
- the respective molded parts 5, 6 with their upper side assigned to the feeder 2 each form the bottom of the relevant feeder 2.
- the melt present in the feeder 2 is thus present on the respective molded part 5, 6.
- the feeder 2 is in the usual way a, in Fig. 1 have their own bottom, indicated by a dashed line, in which through-openings are formed which are congruent with the openings of the lateral areas 8, 9 assigned to the feeder, so that when pouring through the Through openings the molten metal flows into the side area.
- a cooling body 12, 13 is seated in each of the side surfaces of the molded part 5 assigned to the areas 8, 9 and adjacent to its lower edge as seen in the direction of gravity S.
- a further cooling element 14, 15 is seated in each of the opposite side surfaces of the outer mold parts 7 assigned to the areas 8, 9. Melt that gets into the section K1, K2 between the associated heat sinks 14, 12 and 15, 13 consequently solidifies faster than the melt that is present in the direction of gravity S above and below these sections K1, K2.
- a feeder channel 16 is formed in the mold part 5 in the casting mold G1, which extends in the vertical direction from the top side assigned to the feeder 2 of the molded part 5 extends to its underside assigned to the lower section 10 of the mold cavity 3.
- the feeder channel 16 opens directly into the feeder 2. If the one already mentioned above, here only by a dashed line in Fig. 1 If the practical design indicated is selected, in which the feeder 2 has its own base, a separate through opening is of course formed in the base of the feeder 2 for the mouth of the feeder channel 16 assigned to the feeder 2.
- the melt in the feeder 2 reaches the casting mold G1 not only via the lateral areas 8, 9 to the section 10 of the mold cavity 3, but also via the feeder channel 16 in the molded part 5. In this way, the melt flowing through the feeder channel 16 bypasses the critical sections K1, K2 and ensures a continuous supply of the section 10 with melt even if the melt has already solidified in the sections K1, K2 and the flow is obstructed there.
- a feeder channel 23 is formed in the mold part 6 in the casting mold G2 , which extends in an upper section from the upper side of the molded part 6 assigned to the feeder 2 in the vertical direction to a branch point at which it branches into branches 24, 25 arranged alternately.
- each of the branches 24, 25 can also be connected to the feeder 2 via its own feeder channel 23 molded into the molded part 6.
- the branches 24, 25 lead in the lateral direction to one of the side surfaces of the molded part 6 that are respectively assigned to the areas 8, 9 flows out.
- the sections 19, 20 present below the critical sections K1 'and K2' can be supplied with melt until the melt present in them solidifies.
- the lower section 10 of the mold cavity 3 present below the molded part 6 is supplied with melt via this route, bypassing the critical sections K1 ', K2'.
- the melt in the feeder 2 thus reaches the casting mold G2 not only via the lateral areas 8, 9 to the section 10 of the mold cavity 3, but also via the feeder channel 23 and its branches 24, 25. In this way, a continuous supply of the sections 10, 19, 20 of the casting mold G2 with melt is ensured even if the melt has already solidified in the sections K1 ', K2' and the flow is impeded there.
- the invention thus makes it possible to reliably supply different areas and sections of the mold cavity with melt within the casting mold even when melt has already solidified in other areas or the flow of melt is hindered for other reasons. Accordingly, when casting cast parts according to the invention, some component areas can solidify significantly earlier than others. Thus, in the examples shown in the figures, the melts in the upper and inner areas connected to the feeder and connected to the feeder via the respective feeder channel 16, 23 can solidify more slowly than those in the Sections K1, K2 or K1 ', K2' existing melt. Independently of this, however, upper and lower areas can also be made possible, which solidify at the same time.
- feeder channels are preferably molded in a contour-giving molded part arranged in the mold cavity.
- this embodiment of the invention allows the cast parts to be removed from the outer molded parts in the partially solidified, i.e. not yet fully solidified state to free. The component removal can therefore also take place with the invention when the feeder 2 is still in a doughy state.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
Die Erfindung betrifft eine Gießform zum Herstellen von Gussteilen aus einer Metallschmelze, wobei die Gießform einen Formhohlraum umgrenzt und Formteile, die die Form des zu gießenden Gussteils bestimmen, sowie einen Speiser oder separate Gießläufe oder Gießkanäle umfasst, über die beim Abgießen die Schmelze in den Formhohlraum gelangt.The invention relates to a casting mold for producing cast parts from a metal melt, the casting mold defining a mold cavity and comprising molded parts that determine the shape of the cast part to be cast, as well as a feeder or separate pouring runners or pouring channels through which the melt enters the mold cavity when pouring got.
Dabei ist die erfindungsgemäße Gießform speziell für das Gießen von Gussteilen im Schwerkraftguss eingerichtet.The casting mold according to the invention is set up specifically for the casting of cast parts using gravity casting.
Als Metallschmelze kommen dabei insbesondere aus Leichtmetallen und deren Legierungen, insbesondere aus Aluminium oder dessen Legierungen, bestehende Schmelzen in Frage.As a metal melt, in particular melts consisting of light metals and their alloys, in particular aluminum or its alloys, come into consideration.
Gerade bei Zylinderblöcken besteht die Herausforderung, in verschiedenen Bauteilbereichen jeweils optimale Bauteileigenschaften zu realisieren. Hierfür müssen diese Bereiche unterschiedlich schnell erstarren. Bereiche, in denen eine schnelle Erstarrung erforderlich ist, werden deshalb gezielt abgekühlt. Dieser Vorgang kann zu einer empfindlichen Störung im Erstarrungsverlauf führen. Eine gerichtete Erstarrung ist in der Regel nicht mehr zu realisieren. Die zuverlässige Speisung der daraus resultierenden thermischen Zentren in Bauteilbereichen, die im Innern des Gussteils liegen, ist gleichzeitig gefährdet.With cylinder blocks in particular, the challenge is to achieve optimal component properties in different component areas. To do this, these areas have to solidify at different rates. Areas in which rapid solidification is required are therefore specifically cooled. This process can lead to a sensitive disturbance in the solidification process. Directional solidification is usually no longer possible realize. The reliable supply of the resulting thermal centers in component areas that are inside the cast part is also at risk.
Neben dem voranstehend erläuterten Stand der Technik ist aus der
In der
Aus der
Auch beim aus der
Bei einer aus der
Aus der
Aus der
Vor dem Hintergrund des voranstehend erläuterten Standes der Technik bestand die Aufgabe der Erfindung darin, eine Gießform anzugeben, die auch unter den voranstehend erläuterten Voraussetzungen die Herstellung von funktionsgerechten und fehlerfreien Gussteilen gewährleistet.Against the background of the prior art explained above, the object of the invention was to provide a casting mold which, even under the conditions explained above, ensures the production of functional and fault-free cast parts.
Die Erfindung hat diese Aufgabe durch eine Gießform mit den in Anspruch 1 angegebenen Merkmalen gelöst.The invention has achieved this object by a casting mold having the features specified in
Vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Ansprüchen angegeben und werden nachfolgend wie der allgemeine Erfindungsgedanke im Einzelnen erläutert.Advantageous refinements of the invention are specified in the dependent claims and, like the general inventive concept, are explained in detail below.
Der Erfindung liegt der Gedanke zu Grunde, zur Herstellung von Gussteilen den Speiser oder Gießlauf oder Gießkanal, über die die Schmelze in die Gießform abgegossen wird, funktional an den Formhohlraum der Gießform anzubinden. Die Anbindung des Speisers erfolgt erfindungsgemäß durch Formteile, die die Form des Gussteils bestimmen, hindurch. Dabei erstreckt sich die Anbindung insbesondere über mehrere Ebenen des zu gießenden Bauteils.The invention is based on the idea of functionally connecting the feeder or pouring runner or pouring channel, via which the melt is poured into the casting mold, to the mold cavity of the casting mold for the production of cast parts. According to the invention, the feeder is connected through molded parts which determine the shape of the cast part. The connection extends in particular over several levels of the component to be cast.
Beim Gießen von Gussteilen, wird somit eine Metallschmelze in an sich bekannter Weise über einen Speiser oder separate Gießläufe oder Gießkanäle in einen von einer Gießform umgrenzten, das Gussteil abbildenden Formhohlraum abgegossen. Dabei umfasst die Gießform Formteile, die die Form des zu gießenden Gussteils bestimmen. Erfindungsgemäß wird nun die Schmelze über mindestens zwei Anbindungen, von denen mindestens eine als zusätzlicher, durch eines der Formteile führender und von der Kontur des zu gießenden Gussteils unabhängiger Kanal ausgebildet ist, in mindestens zwei Bereichen, die unterschiedlichen Ebenen des zu gießenden Gussteils zugeordnet sind, in den Formhohlraum geleitet.When casting cast parts, a metal melt is poured in a manner known per se via a feeder or separate pouring runners or pouring channels into a mold cavity that is delimited by a casting mold and depicting the cast part. The casting mold includes molded parts that determine the shape of the cast part to be cast. According to the invention, the melt is now via at least two connections, at least one of which is designed as an additional channel leading through one of the molded parts and independent of the contour of the cast part to be cast, in at least two areas that are assigned to different levels of the cast part to be cast, passed into the mold cavity.
Dementsprechend umgrenzt eine erfindungsgemäße Gießform zum Herstellen von Gussteilen aus einer Metallschmelze einen Formhohlraum und hat Formteile, die die Form des zu gießenden Gussteils bestimmen, sowie einen Speiser oder separate Gießläufe oder Gießkanäle, über die beim Abgießen die Metallschmelze in den Formhohlraum gelangt. Erfindungsgemäß sind bei einer derartigen Gießform der Speiser oder die Gießläufe oder Gießkanäle durch mindestens zwei Anbindungen, von denen mindestens eine als zusätzlicher, durch eines der Formteile führender und von der Kontur des zu gießenden Gussteils unabhängiger Kanal ausgebildet ist, an mindestens zwei Bereiche des Formhohlraums angebunden, die unterschiedlichen Ebenen des zu gießenden Bauteils zugeordnet sind.Accordingly, a casting mold according to the invention for producing cast parts from a metal melt delimits a mold cavity and has mold parts that determine the shape of the cast part to be cast, as well as a feeder or separate pouring runners or pouring channels over which during pouring the molten metal enters the mold cavity. According to the invention, in such a casting mold, the feeder or the pouring runners or pouring channels are connected to at least two areas of the mold cavity by at least two connections, at least one of which is designed as an additional channel leading through one of the molded parts and independent of the contour of the cast part to be cast , which are assigned to different levels of the component to be cast.
Bei einer erfindungsgemäßen Gießform kann somit die Schmelze in der üblichen Weise vom Speiser oder von den jeweils vorgesehenen Gießläufen oder Gießkanälen in an sich üblicher Weise über Kanäle in die Gießform gelangen, die beim fertigen Gussteil einen Teil dieses Gussteils bilden. Gemäß der Erfindung kann die Metallschmelze jedoch über mindestens eine weitere Anbindung in den Formhohlraum strömen, die als zusätzlicher, von der späteren Form des zu erzeugenden Gussteils unabhängiger Kanal durch eines derjenigen Formteile geführt ist, die die Kontur des Gussteils bestimmen.In a casting mold according to the invention, the melt can thus get into the casting mold in the usual way from the feeder or from the respective provided runner or pouring channels in the usual manner via channels which form part of this casting in the finished cast part. According to the invention, however, the molten metal can flow into the mold cavity via at least one further connection which, as an additional channel, which is independent of the subsequent shape of the cast part to be produced, is guided through one of the mold parts that determine the contour of the cast part.
Gemäß der Erfindung werden also durch eine geeignete Gestaltung der die Form des Gussteils bestimmenden Bauteile einer Gießform die thermischen Zentren im Bauteilinneren direkt mit dem an die Gießform angebundenen Speiser verbunden. Dies erfolgt durch zusätzliche Speisungskanäle, welche durch die konturgebenden Formteile geführt und in den kritischen Bereichen an das Bauteil, bzw. den die Form des Bauteils bestimmenden Formhohlraum der Gießform, angebunden sind.According to the invention, the thermal centers in the interior of the component are connected directly to the feeder connected to the casting mold through a suitable design of the components of a casting mold that determine the shape of the cast part. This takes place through additional feed channels, which are guided through the contouring molded parts and are connected in the critical areas to the component or to the mold cavity of the casting mold that determines the shape of the component.
Unter "konturgebenden Formteilen" werden dabei sämtliche Teile der Gießform verstanden, durch die die Form des Gussteils bestimmt wird. Hierzu zählen insbesondere Gießkerne, die in die Gießform eingelegt werden, um an oder in dem Gussteil Ausnehmungen, Hohlräume und desgleichen abzubilden.All Understood parts of the casting mold, through which the shape of the casting is determined. These include, in particular, casting cores that are inserted into the casting mold in order to produce recesses, cavities and the like on or in the cast part.
Bei der Gießform kann es sich um eine Sandform oder eine Dauerform handeln.The casting mold can be a sand mold or a permanent mold.
Die Gießform umfasst einen Speiser, wobei dieser Speiser das zum Speisen der Gießform erforderliche Volumen an schmelzflüssigem Metall aufnimmt. Dabei kann der Speiser in einem so genannten "Speiserkern" ausgebildet sein, der auf oder an die Gießform gesetzt oder in die Gießform integriert ist. Der Speiserkern kann so ausgebildet sein, dass er nicht nur das zum Ausgleich von Schwindung erforderliche Speiservolumen enthält, sondern auch die zum Verteilen der Schmelze innerhalb der Gießform benötigte Speiserkontur. Typischerweise wird der Speiserkern so ausgebildet, dass er während der Erstarrung die Gießform nach oben abschließt.The casting mold comprises a feeder, this feeder receiving the volume of molten metal required to feed the casting mold. The feeder can be designed in a so-called “feeder core” which is placed on or on the casting mold or integrated into the casting mold. The feeder core can be designed in such a way that it not only contains the feeder volume required to compensate for shrinkage, but also the feeder contour required to distribute the melt within the casting mold. The feeder core is typically designed in such a way that it closes the casting mold at the top during solidification.
Die Erfindung stellt somit eine Gießform zur Herstellung von Gussteilen zur Verfügung, bei der der das Gussteil abbildende Formhohlraum der Gießform mit Flüssigmetall gefüllt wird, wobei in dem Formhohlraum Formteile eingelegt sind, die die spätere Bauteilgeometrie abbilden.The invention thus provides a casting mold for producing cast parts, in which the mold cavity of the casting mold that depicts the cast part is filled with liquid metal, with molded parts being inserted into the mold cavity that depict the subsequent component geometry.
Die Erfindung eignet sich insbesondere für Schwerkraft-Gießverfahren, wozu sämtliche konventionellen und dynamischen Kokillengießverfahren ebenso Niederdruckgießverfahren zu zählen sind.The invention is particularly suitable for gravity casting processes, including all conventional and dynamic chill casting processes, as well as low-pressure casting processes.
Dabei eignet sich die Erfindung nicht nur für alle Gießverfahren, bei denen der Speiser während der Erstarrung an der Oberseite der Gießform angeordnet ist.The invention is not only suitable for all casting processes in which the feeder is arranged on the upper side of the casting mold during solidification.
Die Befüllung der Gießform mit Schmelze und die Gussteilerstarrung erfolgen demgemäß unter Schwerkraftbedingungen. So sitzt der Speiser an der in Schwerkraftrichtung gesehen oberen Seite der Gießform. Die Gießform weist dabei ein oder mehrere Bereiche auf, in denen die Erstarrungsgeschwindigkeit gegenüber anderen Bereichen oder Abschnitten der Gießform signifikant beschleunigt werden soll.The filling of the casting mold with melt and the solidification of the casting accordingly take place under gravity conditions. The feeder sits on the upper side of the casting mold when viewed in the direction of gravity. The casting mold has one or more areas in which the solidification rate should be significantly accelerated compared to other areas or sections of the casting mold.
Die beschleunigte Abkühlung erfolgt in an sich bekannter Weise durch Kühlkörper, oft auch als "Kühleisen" oder "Kühlkokillen" bezeichnet, die in die Gießform eingesetzt werden und eine örtlich beschränkte Erhöhung der Erstarrungsgeschwindigkeit in bestimmten Gussstückbereichen bewirken. Zu diesem Zweck bestehen die Kühlkörper üblicherweise aus einem Material, dessen Wärmeleitfähigkeit höher ist als der an sie angrenzende Werkstoff der Gießform.The accelerated cooling takes place in a manner known per se by means of heat sinks, often also referred to as "cooling irons" or "chill molds", which are inserted into the casting mold and cause a locally limited increase in the solidification rate in certain areas of the casting. For this purpose, the heat sinks are usually made of a material whose thermal conductivity is higher than the material of the casting mold adjoining them.
Bei Dauerformen, bei denen beispielsweise zumindest die Außen- bzw. Seitenteile und das Bodenteil selbst aus gut wärmeleitenden Materialen bestehen, bilden die betreffenden konturbildenden Formteile (Bodenteil, Außen- bzw. Seitenteil) an sich bereits Kühlkörper, an denen es zu einer vorzeitigen Erstarrung kommen kann. Auch in diesen Fällen kann es selbstverständlich zweckmäßig sein, in erfindungsgemäßer Weise mindestens einen zusätzlichen Kanal vorzusehen, der die Bereiche, die sich in solchen Dauerformen hinsichtlich des Erstarrungsverlaufs und einer dadurch bedingten Durchflussstörung als kritisch erweisen, umgeht und so eine Versorgung von außerhalb der kritischen Bereiche liegenden Abschnitten des Formhohlraums der Gießform sicherstellt.In the case of permanent molds, in which, for example, at least the outer or side parts and the bottom part itself are made of materials that conduct heat well, the relevant contour-forming molded parts (bottom part, outer or side part) already form heat sinks, on which premature solidification occurs can. In these cases, too, it can of course be expedient to provide at least one additional channel in accordance with the invention, which divides the areas that are in such permanent molds with regard to the course of solidification and A flow disturbance caused by this proves to be critical, bypasses it and thus ensures a supply of sections of the mold cavity of the casting mold lying outside the critical areas.
Gemäß der Erfindung ist der Speiser in Erstarrungsrichtung gesehen, d.h. in der Richtung gesehen, in der die Metallschmelze nach dem Abgießen in der Gießform erstarrt, in verschiedenen Bauteilebenen angebunden.According to the invention, the feeder is connected in different component levels as seen in the direction of solidification, i.e. as seen in the direction in which the molten metal solidifies in the casting mold after it has been poured off.
Erfindungsgemäß sind dazu in der Gießform Speiseranbindungen oder Speisungskanäle vorgesehen, die nicht zur Bauteilgeometrie gehören und über die Schmelze zu bestimmten Abschnitten oder Bereichen des Formhohlraums der Gießform gelangen kann.According to the invention, feeder connections or feed channels are provided in the casting mold for this purpose, which do not belong to the component geometry and which can reach certain sections or areas of the mold cavity of the casting mold via the melt.
Erfindungsgemäß können die Speiseranbindungen oder Speisungskanäle durch die konturbildenden Formteile geführt sein. Es ist jedoch auch denkbar, die Speiseranbindungen oder Speisungskanäle durch andere Formteile der Gießform zu führen. So können entsprechende Kanäle auch durch die Außenteile der Gießform geführt sein, um bestimmte Zonen des Formhohlraums, in dem das Gussteil abgebildet wird, gezielt mit Schmelze zu versorgen.According to the invention, the feeder connections or feed channels can be guided through the contour-forming molded parts. However, it is also conceivable to lead the feeder connections or feed channels through other molded parts of the casting mold. Corresponding channels can also be guided through the outer parts of the casting mold in order to supply specific zones of the mold cavity in which the casting is depicted with melt in a targeted manner.
In den konturbildenden Formteilen sind Kühlkörper vorgesehen, um in der jeweiligen Einflusszone der Kühlkörper eine beschleunigte Erstarrung des Gießmetalls zu bewirken.Heat sinks are provided in the contour-forming molded parts in order to bring about accelerated solidification of the cast metal in the respective zone of influence of the heat sinks.
Um zu verhindern, dass in den Speiserkanälen oder -anbindungen vorhandene Schmelze frühzeitig erstarrt, kann zwischen dem jeweiligen Kühlkörper und dem jeweiligen Speiserkanal bzw. der jeweiligen Speiseranbindung eine Wand vorgesehen sein, die eine verminderte Wärmeleitfähigkeit besitzt und so den Kühlkörper gegen die Speisungskanäle wärmeisoliert. Insbesondere kann die Wand aus Formsand bestehen, aus dem auch das jeweilige konturbildende Formteil geformt ist.In order to prevent the melt present in the feeder channels or connections from solidifying prematurely, a wall can be provided between the respective heat sink and the respective feeder channel or the respective feeder connection, which has a reduced thermal conductivity and thus thermally insulates the heat sink from the feed channels. In particular, the wall can consist of molding sand, from which the respective contour-forming molded part is also formed.
Die in mindestens eines der konturbildenden Formteile eingeformten Speiseranbindungen oder -kanäle sind so geführt, dass Schmelze unter Umgehung der Zone, in der der jeweilige Kühlkörper eine beschleunigte Erstarrung bewirkt, zu einer Zone des Gussteils geführt wird, in der die Erstarrung langsamer ablaufen soll. Auf diese Weise wird die Zone langsamer Erstarrung auch dann noch sicher mit Schmelze versorgt, wenn zwischen dem Speiser und der betreffenden Zone eine Zone vorhanden ist, in der eine beschleunigte Abkühlung erfolgen soll und in der demzufolge die Gefahr besteht, dass bereits erstarrtes Material den Zufluss weiterer Schmelze zu der Zone behindert, die langsamer erstarren soll.The feeder connections or channels formed in at least one of the contour-forming molded parts are guided in such a way that melt, bypassing the zone in which the respective cooling element causes accelerated solidification, is guided to a zone of the cast part in which solidification is supposed to proceed more slowly. In this way, the zone of slow solidification is reliably supplied with melt even if there is a zone between the feeder and the relevant zone in which accelerated cooling is to take place and in which there is consequently the risk that material that has already solidified will enter the inflow hinders further melt to the zone that is supposed to solidify more slowly.
Mit der Erfindung lassen sich komplex geformte Gussteile erzeugen, bei denen an unterschiedlichen Stellen unterschiedlich schnell ablaufende Erstarrungen möglich sind, ohne dass dazu die Komplexität der Gießform nennenswert ansteigt. Zu den Gussteilen, für deren Herstellung sich die Erfindung insbesondere eignet, zählen Zylinderköpfe und Zylinderblöcke für Verbrennungsmotoren.With the invention, complexly shaped cast parts can be produced in which solidifications that occur at different speeds at different rates are possible without the complexity of the casting mold increasing significantly. The cast parts for the production of which the invention is particularly suitable include cylinder heads and cylinder blocks for internal combustion engines.
Gerade bei einer komplexen Formgebung gewährleistet die Erfindung die Herstellung von fehlerfreien Gussbauteilen, wodurch sie insbesondere zum Gießen von Zylinderblöcken unter Erfüllung von sehr hohen Anforderungen an Festigkeiten im Bereich der Hauptlagerund im Bereich des Zylinderstegs geeignet ist.Particularly in the case of complex shapes, the invention ensures the production of flawless cast components, which makes it particularly suitable for casting cylinder blocks while meeting very high strength requirements in the area of the main bearing and in the area of the cylinder web.
Nachfolgend wird die Erfindung anhand einer ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Es zeigen jeweils schematisch:
- Fig. 1
- eine erste Gießform in einem Vertikalschnitt;
- Fig. 2
- eine zweite Gießform in einem Vertikalschnitt.
- Fig. 1
- a first casting mold in a vertical section;
- Fig. 2
- a second casting mold in a vertical section.
Bei den Gießformen G1,G2 bildet der als Schwerkraftspeiser wirkende Speiserkern 1 jeweils den oberen Abschluss der jeweiligen Gießform G1,G2. Der Speiserkern 1 umgibt einen Speiser 2, über den die Befüllung des von der Gießform G1,G2 jeweils umgebenen Formhohlraums 3 mit Schmelze erfolgt. Die Befüllung der Gießform G1,G2 kann genauso in an sich bekannter Weise auch über separate Gießläufe und Gießkanäle erfolgen.In the case of the casting molds G1, G2, the
In der Gießform G1,G2 sind jeweils konturgebende Formteile 4a,4b,4c vorgesehen. Zusätzlich weist die Gießform G1 ein konturbildendes Formteil 5 und die Gießform G2 ein konturbildendes Formteil 6 auf.Contouring molded
Die Formteile 4a-4c sowie 5 und 6 sind jeweils in an sich bekannter Weise als Gießkerne ausgebildet und aus Formsand geformt. Sie sind in den von den jeweiligen Außenformteilen 7 der Gießformen G1,G2 umgrenzten Formhohlraum 3 gesetzt und bilden in dem zu gießenden Gussteil Ausnehmungen, Hohlräume und Kanäle ab. Dementsprechend werden die Formteile 4a-4c und 5,6 beim Entkernen der Gießform G1,G2 zerstört. Während die Formteile 4a-4c und 5,6 die innere Kontur des zu gießenden Gussteils bestimmen, bestimmen die Außenteile 7 dessen Außenkontur.The molded
Die Formteile 5,6 sind innerhalb des jeweiligen Formhohlraums 3 so positioniert, dass sie mit ihrer oberen Seite an den jeweiligen Speiserkern 1 grenzen und gleichzeitig zentral im Formhohlraum 3 der jeweiligen Gießform G1,G2 angeordnet sind. Die Formteile 5,6 grenzen auf diese Weise innerhalb des Formhohlraums 3 zwei seitliche Bereiche.8,9 voneinander ab, die beispielsweise die Seitenwände des zu gießenden Gussteils abbilden.The
In Schwerkraftrichtung S unterhalb der Formteile 5,6 ist jeweils ein weiterer Abschnitt 10 vorhanden, in dem die anderen konturbildenden Formteile 4a-4c der jeweiligen Gießform G1,G2 sitzen.In the direction of gravity S below the
Bei den hier gezeigten Ausführungsbeispielen bilden die jeweiligen Formteile 5,6 mit ihrer dem Speiser 2 zugeordneten Oberseite jeweils den Boden des betreffenden Speisers 2. Im Gießbetrieb steht somit die im Speiser 2 vorhandene Schmelze auf dem jeweiligen Formteil 5,6 an. Bei einer praxisgerechten Ausführung wird der Speiser 2 in der üblichen Weise einen, in
Im Bodenbereich des Formhohlraums 3 der Gießformen G1,G2 ist jeweils ein Kühlkörper 11 vorgesehen. Die nach dem Befüllen der jeweiligen Gießform G1,G2 an dem Kühlkörper 11 anstehende Schmelze erstarrt aufgrund des dort stattfindenden höheren Wärmeabflusses schneller als die darüber stehende Schmelze. Daraus ergibt sich eine gegen die Schwerkräftrichtung S gerichtete Erstarrung der in den Formhohlraum 3 gefüllten Metallschmelze.A cooling
Bei der Gießform G1 sitzt in den den Bereichen 8,9 zugeordneten Seitenflächen des Formteils 5 und angrenzend an dessen in Schwerkraftrichtung S gesehen unteren Rand jeweils ein Kühlkörper 12,13.In the case of the casting mold G1, a cooling
Ebenso sitzt bei der Gießform G1 in den jeweils gegenüberliegenden, den Bereichen 8,9 zugeordneten Seitenflächen der Außenformteile 7 jeweils ein weiterer Kühlkörper 14,15. Schmelze, die in den zwischen den einander zugeordneten Kühlkörpern 14,12 bzw. 15,13 vorhandenen Abschnitt K1,K2 gelangt, erstarrt demzufolge schneller als die Schmelze, die in Schwerkraftrichtung S ober- und unterhalb dieser Abschnitte K1,K2 vorhanden ist.Likewise, in the case of the casting mold G1, a
Um den unterhalb der Abschnitte K1,K2 vorhandenen Abschnitt 10 des Formhohlraums 3 sicher mit im Speiser 2 bevorrateter Schmelze zu versorgen, ist bei der Gießform G1 in das Formteil 5 ein Speiserkanal 16 eingeformt, der sich in vertikaler Richtung von der dem Speiser 2 zugeordneten Oberseite des Formteils 5 zu dessen dem unteren Abschnitt 10 des Formhohlraums 3 zugeordneten Unterseite erstreckt.In order to reliably supply the
Bei den hier dargestellten Ausführungsbeispielen mündet der Speiserkanal 16 direkt im Speiser 2. Sofern die oben bereits erwähnte, hier nur durch eine gestrichelte Linie in
Die im Speiser 2 anstehende Schmelze gelangt bei der Gießform G1 somit nicht nur über die seitlichen Bereiche 8,9 zum Abschnitt 10 des Formhohlraums 3, sondern auch über den Speiserkanal 16 im Formteil 5. Auf diese Weise umgeht die durch den Speiserkanal 16 strömende Schmelze die kritischen Abschnitte K1,K2 und stellt selbst dann eine kontinuierliche Versorgung des Abschnitts 10 mit Schmelze sicher, wenn in den Abschnitten K1,K2 bereits Schmelze erstarrt und der Durchfluss dort behindert ist.The melt in the
Bei der Gießform G2 sitzt in den den Bereichen 8,9 zugeordneten Seitenflächen des Formteils 6 ebenfalls jeweils ein Kühlkörper 17,18. Im Unterschied zur Gießform G1 sind die Kühlkörper 17,18 entgegen der Schwerkraftrichtung S in Richtung der Oberseite des Formteils 6 versetzt angeordnet, so dass unterhalb von ihnen jeweils noch ein enger Abschnitt 19,20 der seitlichen Bereiche 8,9 vorhanden ist, der in den unteren Abschnitt 10 des Formhohlraums 3 der Gießform G2 mündet. Ebenso sitzt in den jeweils gegenüberliegenden, den Bereichen 8,9 zugeordneten Seitenflächen der Außenformteile der Gießform G2 jeweils ein weiterer Kühlkörper 21,22.In the case of the casting mold G2, a cooling
Schmelze, die in den zwischen den einander zugeordneten Kühlkörpern 17,22 bzw. 18,21 vorhandenen Abschnitt K1',K2' gelangt, erstarrt demzufolge schneller als die Schmelze, die in Schwerkraftrichtung S ober- und unterhalb dieser Abschnitte K1',K2' vorhanden ist.Melt that gets into the section K1 ', K2' between the associated
Um die bei der Gießform G2 unterhalb der Abschnitte K1',K2' vorhandenen Abschnitte 10,19,20 des Formhohlraums 3 der Gießform G2 sicher mit im Speiser 2 bevorrateter Schmelze zu versorgen, ist bei der Gießform G2 in das Formteil 6 ein Speiserkanal 23 eingeformt, der sich in einem oberen Abschnitt von der dem Speiser 2 zugeordneten Oberseite des Formteils 6 in vertikaler Richtung bis zu einer Verzweigungsstelle erstreckt, an der er sich in im Wechsel angeordnete Abzweigungen 24,25 verzweigt. Selbstverständlich kann auch jede der Abzweigungen 24,25 über einen eigenen in das Formteil 6 eingeformten Speiserkanal 23 an den Speiser 2 angebunden sein.In order to reliably supply the
Die Abzweigungen 24,25 führen in seitlicher Richtung zu jeweils einer der den Bereichen 8,9 jeweils zugeordneten Seitenflächen des Formteils 6. Die eine Abzweigung 24 mündet dabei im Abschnitt 19 des seitlichen Bereichs 8, während die Abzweigung 25 im Abschnitt 20 des seitlichen Bereichs 9 mündet. Auf diese Weise können die unterhalb der kritischen Abschnitte K1' und K2' vorhandenen Abschnitte 19,20 bis zur Erstarrung der in ihnen vorhandenen Schmelze mit Schmelze versorgt werden. Ebenso wird der unterhalb des Formteils 6 vorhandene untere Abschnitt 10 des Formhohlraums 3 über diesen Weg unter Umgehung der kritischen Abschnitte K1',K2' mit Schmelze versorgt.The
Die im Speiser 2 anstehende Schmelze gelangt bei der Gießform G2 somit nicht nur über die seitlichen Bereiche 8,9 zum Abschnitt 10 des Formhohlraums 3, sondern auch über den Speiserkanal 23 und dessen Abzweigungen 24,25. Auf diese Weise ist selbst dann eine kontinuierliche Versorgung der Abschnitte 10,19,20 der Gießform G2 mit Schmelze sichergestellt, wenn in den Abschnitten K1',K2' bereits Schmelze erstarrt und der Durchfluss dort behindert ist.The melt in the
Um zu verhindern, dass im jeweiligen Speiserkanal 16,23 der Gießformen G1,G2 beim Abgießen fließende Schmelze frühzeitig erstarrt, ist bei der Gießform G1 zwischen dem jeweiligen Kühlkörper 12,13 und dem Speiserkanal 16 und bei der Gießform G2 zwischen den Kühlkörpern 17,18 und dem Speiserkanal 23 jeweils eine Wand 26,27 bzw. 28,29 vorgesehen, die aus dem Formstoff besteht, aus dem die Formteile 5,6 in üblicher Weise hergestellt sind und der eine gegenüber den Kühlkörpern 12,13,17,18 verminderte Wärmeleitfähigkeit besitzt.In order to prevent the melt flowing in the
Die Erfindung ermöglicht es somit, innerhalb der Gießform unterschiedliche Bereiche und Abschnitte des Formhohlraums auch dann sicher mit Schmelze zu versorgen, wenn in anderen Bereichen bereits Schmelze erstarrt oder aus anderen Gründen der Durchfluss von Schmelze behindert ist. Dementsprechend können beim Gießen von Gussteilen gemäß der Erfindung manche Bauteilbereiche deutlich früher erstarren als andere. So kann bei den in den Figuren gezeigten Beispielen die Schmelzen in den an den Speiser angebundenen oberen und inneren, über den jeweiligen Speiserkanal 16,23 an den Speiser angebundenen Bereichen jeweils langsamer erstarren als die in den Abschnitten K1,K2 bzw. K1',K2' vorhandene Schmelze. Unabhängig davon können jedoch auch obere und untere Bereiche ermöglicht werden, die zeitgleich erstarren.The invention thus makes it possible to reliably supply different areas and sections of the mold cavity with melt within the casting mold even when melt has already solidified in other areas or the flow of melt is hindered for other reasons. Accordingly, when casting cast parts according to the invention, some component areas can solidify significantly earlier than others. Thus, in the examples shown in the figures, the melts in the upper and inner areas connected to the feeder and connected to the feeder via the
Ein Vorteil, der sich daraus ergibt, dass die Speiserkanäle bevorzugt in einem konturgebenden, im Formhohlraum angeordneten Formteil eingeformt werden, besteht darin, dass diese Ausgestaltung der Erfindung es erlaubt, die Gussteile bereits im teilverfestigten, d.h. noch nicht voll durcherstarrten Zustand, von den Außenformteilen zu befreien. Die Bauteilentnahme kann demzufolge auch bei der Erfindung bereits bei noch teigigem Zustand des Speisers 2 erfolgen.An advantage that arises from the fact that the feeder channels are preferably molded in a contour-giving molded part arranged in the mold cavity is that this embodiment of the invention allows the cast parts to be removed from the outer molded parts in the partially solidified, i.e. not yet fully solidified state to free. The component removal can therefore also take place with the invention when the
- G1,G2G1, G2
- GießformenCasting molds
- K1,K2K1, K2
-
zwischen den einander zugeordneten Kühlkörpern 14,12 bzw. 15,13 vorhandene Abschnitte des Formhohlraums 3 der Gießform G1Sections of the
mold cavity 3 of the casting mold G1 that are present between the associated 14, 12 and 15, 13heat sinks - K1',K2'K1 ', K2'
-
zwischen den einander zugeordneten Kühlkörpern 17,22 bzw. 19,21 vorhandene Abschnitte des Formhohlraums 3 der Gießform G2Sections of the
mold cavity 3 of the casting mold G2 which are present between the associated 17, 22 and 19, 21heat sinks - SS.
- SchwerkraftrichtungDirection of gravity
- 11
- SpeiserkernFeeder core
- 22
- SpeiserFeeder
- 33
- FormhohlraumMold cavity
- 4a-4c4a-4c
- FormteileMolded parts
- 55
- FormteilMolded part
- 66th
- FormteilMolded part
- 77th
- AußenformteileExternal molded parts
- 8,98.9
-
seitliche Bereiche des Formhohlraums 3lateral areas of the
mold cavity 3 - SS.
- SchwerkraftrichtungDirection of gravity
- 1010
-
unterer Abschnitt des Formhohlraums 3lower portion of
mold cavity 3 - 1111th
- KühlkörperHeat sink
- 12,1312.13
- KühlkörperHeat sink
- 14,1514.15
- KühlkörperHeat sink
- 1616
- SpeiserkanalFeeder duct
- 17,1817.18
- KühlkörperHeat sink
- 19,2019.20
- enge Abschnittenarrow sections
- 21,2221.22
- KühlkörperHeat sink
- 2323
- SpeiserkanalFeeder duct
- 24,2524.25
-
Abzweigungen des Speiserkanals 23Branches of the
feeder channel 23 - 26,2726.27
- Wändewalls
- 28,2928.29
- Wändewalls
Claims (2)
- Casting mould for casting cast parts from a metal melt, wherein the casting mould (G1, G2) encloses a mould cavity (3) and- moulded parts (4-7) which determine the shape of the cast parts to be cast and- a feeder (2) which sits on the upper side of the casting mould, when viewed in the direction of gravity, and via which the metal melt enters the mould cavity (3) during casting as a result of the effect of gravity and- comprises at least two connections via which the feeder (2) is connected to at least two sections (K1, K2, K1', K2', 10) of the mould cavity (3) which are assigned to different levels of the component to be cast, which are spaced apart in the direction of gravity (S), ,- wherein the first of the connections is formed by a channel (regions 8, 9) of the casting mould (G1, G2)formed in the casting mould, said casting mould forming a part of the cast part in the case of the finished cast part,- wherein the second of the connections, as an additional channel (feeder channels 16, 23) independent of the subsequent shape of the cast part to be produced, is guided through the moulded parts (5, 29) that determine the contour of the cast part,- wherein in the casting mould (G1, G2) is arranged at least one cooling body (12-15; 17, 18, 21, 22) which causes an accelerated cooling of the metal melt entering the mould cavity (3) via the first connection (regions 8, 9) during casting,- wherein the second connection (feeder channels 16, 23) opens in a level lying below the cooling body (12-15; 17, 18, 21, 22) in the inflow direction of the melt, and- wherein the section (K1, K2, K1', K2') of the mould cavity (3) connected to the feeder (2) via the first connection (regions 8, 9) is configured in the region of the cooling body (12-15; 17, 18, 21, 22) such that the metal melt entering this section (K1, K2, K1', K2') solidifies in an accelerated manner compared to the metal melt which enters the respectively other section (10) of the mould cavity (3) via the second connection (feeder channels 16, 23).
- Casting mould according to claim 1, characterised in that between the cooling body (12-15; 17, 18, 21, 22) and the additional channel (16, 23) a wall (26-29) is provided which has a reduced heat conductivity compared to the cooling body (12-15; 17, 18, 21, 22).
Priority Applications (1)
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PL14700923T PL2945760T3 (en) | 2013-01-18 | 2014-01-20 | Casting mold for producing castings, in particular cylinder blocks and cylinder heads, having functional connection of the feeder |
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DE102013100540 | 2013-01-18 | ||
PCT/EP2014/051030 WO2014111573A1 (en) | 2013-01-18 | 2014-01-20 | Method and casting mold for producing castings, in particular cylinder blocks and cylinder heads, having functional connection of the feeder |
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US (1) | US10688555B2 (en) |
EP (1) | EP2945760B1 (en) |
JP (1) | JP6227671B2 (en) |
KR (1) | KR101805853B1 (en) |
CN (1) | CN104936721B (en) |
BR (1) | BR112015017065B1 (en) |
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WO2023248170A1 (en) | 2022-06-24 | 2023-12-28 | Nemak, S.A.B. De C.V. | Casting mould for producing a cast part formed from a light-metal alloy |
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DE102014217438A1 (en) * | 2014-09-01 | 2016-03-03 | Volkswagen Aktiengesellschaft | Casting mold for gravity casting or low-pressure casting of light metals and chill casting process executable therewith |
DE102017100805A1 (en) | 2017-01-17 | 2018-07-19 | Nemak, S.A.B. De C.V. | Casting mold for casting complex shaped castings and use of such a casting mold |
DE102018128020B4 (en) * | 2018-11-09 | 2024-05-23 | Bayerische Motoren Werke Aktiengesellschaft | Mould and method for producing a crankcase |
CN110202114A (en) * | 2019-07-22 | 2019-09-06 | 程郎 | A kind of aluminium casting die casting |
EP3907018B1 (en) * | 2020-05-08 | 2023-03-29 | Hamilton Sundstrand Corporation | Thermal management in lost wax casting |
US11654476B2 (en) * | 2020-09-28 | 2023-05-23 | GM Global Technology Operations LLC | Hybrid core for manufacturing of castings |
CN117505776B (en) * | 2024-01-05 | 2024-04-16 | 烟台冰轮智能机械科技有限公司 | Casting process of centrifugal compressor base |
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2014
- 2014-01-20 JP JP2015553115A patent/JP6227671B2/en active Active
- 2014-01-20 BR BR112015017065-0A patent/BR112015017065B1/en active IP Right Grant
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- 2014-01-20 HU HUE14700923A patent/HUE057875T2/en unknown
- 2014-01-20 RU RU2015134546A patent/RU2634819C2/en active
- 2014-01-20 KR KR1020157021846A patent/KR101805853B1/en active IP Right Grant
- 2014-01-20 PL PL14700923T patent/PL2945760T3/en unknown
- 2014-01-20 WO PCT/EP2014/051030 patent/WO2014111573A1/en active Application Filing
- 2014-01-20 EP EP14700923.7A patent/EP2945760B1/en active Active
- 2014-01-20 CN CN201480005370.2A patent/CN104936721B/en active Active
- 2014-01-20 US US14/761,656 patent/US10688555B2/en active Active
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WO2023248170A1 (en) | 2022-06-24 | 2023-12-28 | Nemak, S.A.B. De C.V. | Casting mould for producing a cast part formed from a light-metal alloy |
LU502349B1 (en) | 2022-06-24 | 2024-01-09 | Nemak Sab De Cv | Casting mold for producing a casting made from a light metal alloy |
Also Published As
Publication number | Publication date |
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US20150352631A1 (en) | 2015-12-10 |
KR101805853B1 (en) | 2017-12-07 |
HUE057875T2 (en) | 2022-06-28 |
CN104936721A (en) | 2015-09-23 |
ZA201505175B (en) | 2016-07-27 |
BR112015017065A2 (en) | 2017-07-11 |
MX2015009203A (en) | 2016-03-21 |
CN104936721B (en) | 2017-07-07 |
EP2945760A1 (en) | 2015-11-25 |
US10688555B2 (en) | 2020-06-23 |
KR20150105463A (en) | 2015-09-16 |
PL2945760T3 (en) | 2022-05-09 |
RU2634819C2 (en) | 2017-11-03 |
JP2016507381A (en) | 2016-03-10 |
RU2015134546A (en) | 2017-03-03 |
WO2014111573A1 (en) | 2014-07-24 |
JP6227671B2 (en) | 2017-11-08 |
BR112015017065B1 (en) | 2019-07-09 |
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