WO2009014412A1 - Method and mould for stratified moulding with metalostatic pressure compensation - Google Patents
Method and mould for stratified moulding with metalostatic pressure compensation Download PDFInfo
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- WO2009014412A1 WO2009014412A1 PCT/MX2007/000101 MX2007000101W WO2009014412A1 WO 2009014412 A1 WO2009014412 A1 WO 2009014412A1 MX 2007000101 W MX2007000101 W MX 2007000101W WO 2009014412 A1 WO2009014412 A1 WO 2009014412A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/20—Stack moulds, i.e. arrangement of multiple moulds or flasks
Definitions
- This invention relates to molten metal molding, and in particular, it relates to a method and mold for multi-piece stratified molding by means of stackable molds that have a generally rhomboidal shaped cone cavity with a double cone trunk that allows to compensate for the metastatic pressure and achieve a temperature distribution in the mold during the casting of the molten metal.
- the stackable molds are placed one above the other (in what is known as stratified molding or stacked molding), and they are arranged so that the drinking fountain or central collector of Ijenado that joins the stackable molds together is vertical and, therefore, the molding cavities of each stackable mold are one above the other.
- the molten metal is poured into an inlet opening in the upper stackable mold or in the central filling manifold, the molding cavities of the lower stackable molds are filled first and the upper cavities are filled later, but the control is minimal with respect to Ia way in which molten metal fills each molding cavity.
- the molten metal when emptied, induces a high static pressure (known as metastatic pressure) on the lower stackable molds, which frequently exerts the effect of the molten metal passing through the Stackable mold metal (known as internal fusion), which can lead to the formation of plugs during solidification of the molten metal and a complete breakage of the mold wall and therefore can cause leaks in the joints between molds adjacent causing the burr formation or the complete breakage of a joint.
- metastatic pressure a high static pressure
- internal fusion internal Stackable mold metal
- Another disadvantage is that being the central collector of generally straight filling causes an inadequate temperature distribution along the mold during the casting of the molten metal, since it does not allow the formation of hot spots along the mold.
- each casting cavity of each stackable mold is interconnected to form a central filling manifold, and each casting cavity allows to compensate for the metastatic pressure of the molten metal during its emptying by the central filling manifold to achieve a generally uniform filling of each of the molding cavities of each
- each stackable mold includes a generally rhomboidal shaped cone with a double cone trunk; and one or more molding cavities connected to the casting cavity by one or more feeding ducts; where the stackable molds are arranged so that their respective casting cavities are placed one above the other to form a central filling manifold; and (b) emptying molten metal into the central filling manifold so that molten metal flows through each casting cavity and fills the molding cavities from the lower stackable mold to the upper stackable mold; where each casting cavity allows the metastatic pressure of the molten metal to be compensated during its emptying to achieve a generally uniform filling of each of the molding cavities of each stackable mold.
- Figure 1 illustrates a schematic perspective view of a mold for stratified molding according to the invention.
- Figure 2 illustrates a schematic cross-sectional view through the cutting plane 2-2 ' indicated in Figure 1 of a mold for stratified molding according to the invention.
- Figure 3 illustrates a schematic view in longitudinal section along the 3-3 ' cutting plane indicated in Figure 1 of a mold for stratified molding according to the invention.
- Figure 4 illustrates a schematic detail view in longitudinal section of an embodiment of the casting cavity of a stackable mold according to the invention.
- mold for stratified molding in the context of the present description, means a mold formed by one or more stackable molds arranged one above the other in a vertical column.
- stackable mold in the context of the present description, means each one of the mold blocks that form the mold for stratified molding, which includes the molding cavities, casting cavity and feeding ducts.
- molding in the context of the present description, means manufacturing process of parts based on pouring molten metals into the mold cavity of a mold, to obtain after solidification and cooling a piece that is reproduction of the cavity of molding
- molding cavity in the context of the present description, means hollow space within a mold that represents the shape of the piece to be molded.
- casting cavity in the context of the present description, means hollow space within a mold used to distribute and feed the molten metal through the feeding conduit to the molding cavity.
- feeding duct in the context of the present description, means passage for the molten metal that connects the casting cavity with a molding cavity.
- metal pressure in the context of the present description, means the static pressure exerted by the molten metal on the internal walls of the mold for stratified molding and its stackable molds.
- the mold for stratified molding 10 is formed by one or more stackable molds 20 which in turn each is formed by a casting cavity 30 and one or more molding cavities 40 connected to each other by one or more feed ducts 50.
- Each stackable mold 20 can be a sand mold, a permanent mold, or a ceramic mold.
- the casting cavity 30 and the molding cavities 40 of each stackable mold 20 are formed from the assembly of an upper mold part 60 with a lower mold part 70 by a generally male-female mechanism.
- Each of the casting cavities 30 have a generally shaped double cone rhomboidal and interconnect vertically to form a central filling manifold 80, whereby a flow of molten metal, as it is poured into the mold for stratified molding 10, successively fills the cavities of casting 30 of the stackable molds 20 starting with those of the lower part until reaching those of the upper part. As each casting cavity 30 is filled with molten metal, the molding cavities 40 connected to it are filled.
- the generally rhomboidal shape of the double cone trunk of each of the casting cavities 30 makes it possible to compensate for the metastatic pressure of the molten metal during its emptying by the central filling manifold 80, whereby a generally uniform filling of each one is achieved. of the mold cavities 40 of each of the stackable molds 20.
- the double cone-shaped rhomboidal shape of each of the casting cavities 30 is formed from an upper cavity 110 in the upper mold part 60 in the form of a cone trunk with a smaller base and a larger base, and a lower cavity in the lower mold part 70 also in the form of a cone trunk with a smaller base and a larger base, such that when the upper mold part 60 is assembled with the lower mold part 70, to integrate a stackable mold 20, the upper cavity 110 and the lower cavity 120 are opposed to each other and joined by their respective major base.
- the upper cavity 110 or lower cavity 120 may have a bell shape, a pyramid trunk shape, a spherical segment shape with two bases or combinations of these shapes.
- each casting cavity 30 the smaller base of the upper cavity 110 is smaller than the smaller base of the lower cavity 120; while the major base of the upper cavity 110 is smaller than the major base of said lower cavity 120.
- This configuration allows a central filling manifold 80 to be formed which varies (from top to bottom) in a stepped manner in its diameter. This irregular form of central filling manifold 80 allows the formation of hot spots, at the junction points of the casting cavities 30, during the casting of the molten metal and therefore a temperature distribution is achieved in the mold for stratified molding 10 .
- the mold for stratified molding 10 includes a drain cup 90 through which the molten metal is poured and is located in the upper part of the mold 10 and connected to the central filling manifold 80 at its top.
- the drain cup 90 is defined by a bell-shaped mold cavity, pyramid trunk shape, spherical segment shape with two bases and combinations of these shapes.
- the mold for stratified molding 10 includes a flow stabilizer 100 located in the lower part of the mold 10 and connected to the central filling manifold 80 at its bottom.
- the flow stabilizer 100 is defined by a bell-shaped mold cavity, trunk shape of pyramid, spherical segment shape of a base, spherical segment shape of two bases and combinations of these shapes.
- the shape of the drain cup 90 and the flow stabilizer 100 allows bubbles not to form during the casting of the molten metal, because it counteracts or dampens the turbulence of the flow.
- a method for stratified molding with metastatic pressure compensation begins by forming a mold for stratified molding 10 from a plurality of stackable molds 20 (described above) ) arranged one above the other in a vertical column.
- a drain cup 90 is placed in the upper part of the mold for stratified molding 10 and in the lower part a flow stabilizer 100, both connected to the central filling manifold 80; then emptying molten metal in the central filling manifold 80 so that the molten metal flows through each casting cavity 30 and fills the molding cavities 40 from the lower stackable mold 20 to the upper stackable mold 20; in such a way that each casting cavity 30 allows the metastatic pressure of the molten metal to be compensated during its emptying to achieve a generally uniform filling of each of the molding cavities 40 of each stackable mold 20.
- each casting cavity is allowing the formation of hot spots during the casting of molten metal by the central filling manifold 80 to achieve a temperature distribution along the mold for stratified molding 10.
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Abstract
A mould for stratified moulding with metalostatic pressure compensation formed by one or more stackable moulds formed by a tapping cavity of a generally rhomboidal truncated cone shape and one or more moulding cavities connected to the tapping cavity by one or more supply conduits; in such a way that each tapping cavity of each stackable mould interconnects to form a central filling collector, and each tapping cavity compensates for the metalostatic pressure of the molten metal as it is drained by the central filling collector to achieve generally uniform filling of each of the moulding cavities of each of the stackable moulds. In addition the generally rhomboidal truncated cone shape serves to keep the temperature distributed in the mould during the draining of the molten metal.
Description
MÉTODO Y MOLDE PARA MOLDEO ESTRATIFICADO CON COMPENSACIÓN DE METHOD AND MOLD FOR STRATIFIED MOLDING WITH COMPENSATION OF
PRESIÓN METALOSTÁTICAMETALLOSTATIC PRESSURE
CAMPO TÉCNICO DE LA INVENCIÓNTECHNICAL FIELD OF THE INVENTION
Esta invención se refiere al moldeo de metal fundido, y en particular, se refiere a un método y molde para moldeo estratificado de piezas múltiples por medio de moldes apilables que cuentan con una cavidad de colada en forma generalmente romboidal de doble tronco de cono que permite ir compensando Ia presión metalostática y lograr una distribución de temperatura en el molde durante el vaciado del metal fundido.This invention relates to molten metal molding, and in particular, it relates to a method and mold for multi-piece stratified molding by means of stackable molds that have a generally rhomboidal shaped cone cavity with a double cone trunk that allows to compensate for the metastatic pressure and achieve a temperature distribution in the mold during the casting of the molten metal.
ANTECEDENTES DE LA INVENCIÓNBACKGROUND OF THE INVENTION
Actualmente, el modo normal para colada simultánea en una pluralidad de moldes apilables de arena y similares para vaciar una pluralidad de piezas idénticas ó similares, los moldes apilables se colocan uno sobre otro (en Io que se conoce como moldeo estratificado o moldeo apilado), y se disponen de forma que el bebedero o colector central de Ijenado que une entre sí los moldes apilables sea vertical y, por Io tanto, las cavidades de moldeo de cada molde apilable queden una por encima de otra. Vertiéndose el metal fundido en una abertura de entrada en el molde apilable superior o en el colector central de llenado, las cavidades de moldeo de los moldes apilables inferiores se llenan primero y las cavidades superiores se llenan después, pero el control es mínimo respecto a Ia manera en que el metal fundido llena cada cavidad de moldeo.Currently, the normal mode for simultaneous casting in a plurality of stackable sand molds and the like to empty a plurality of identical or similar pieces, the stackable molds are placed one above the other (in what is known as stratified molding or stacked molding), and they are arranged so that the drinking fountain or central collector of Ijenado that joins the stackable molds together is vertical and, therefore, the molding cavities of each stackable mold are one above the other. The molten metal is poured into an inlet opening in the upper stackable mold or in the central filling manifold, the molding cavities of the lower stackable molds are filled first and the upper cavities are filled later, but the control is minimal with respect to Ia way in which molten metal fills each molding cavity.
La turbulencia inevitable introducida en Ia corriente de metal fundido que desciende por el colector central de llenado y penetra en una cavidad de moldeo
prácticamente a un ángulo recto respecto de Ia dirección del flujo de metal fundido en el colector central de llenado, ha dado por resultado Ia producción de piezas de calidad deficiente. Así mismo, al estar los moldes apilables acomodados vertical mente, el metal fundido, al ser vaciado, induce una elevada presión estática (conocida como presión metalostática) sobre los moldes apilables inferiores, Io cual ejerce frecuentemente el efecto de que el metal fundido atraviese el metal de los moldes apilables (que se conoce por fusión interior), Io cual puede dar lugar a Ia formación de rechupes durante Ia solidificación del metal fundido y a una rotura completa de Ia pared del molde y por ende puede producir fugas en las uniones entre moldes adyacentes causando Ia formación de rebaba ó Ia rotura completa de una juntura. Otra desventaja es que al ser el colector central de llenado generalmente recto propicia una inadecuada distribución de temperatura a Io largo del molde durante el vaciado del metal fundido, pues no permite Ia formación de puntos calientes a Io largo del molde.The inevitable turbulence introduced into the molten metal stream that descends through the central filling manifold and enters a molding cavity practically at a right angle with respect to the direction of the flow of molten metal in the central filling manifold, it has resulted in the production of parts of poor quality. Likewise, since the stackable molds are arranged vertically, the molten metal, when emptied, induces a high static pressure (known as metastatic pressure) on the lower stackable molds, which frequently exerts the effect of the molten metal passing through the Stackable mold metal (known as internal fusion), which can lead to the formation of plugs during solidification of the molten metal and a complete breakage of the mold wall and therefore can cause leaks in the joints between molds adjacent causing the burr formation or the complete breakage of a joint. Another disadvantage is that being the central collector of generally straight filling causes an inadequate temperature distribution along the mold during the casting of the molten metal, since it does not allow the formation of hot spots along the mold.
Dada Ia estructura compleja de las piezas a ser moldeadas y a Ia falta de control de Ia presión metalostática durante el moldeo estratificado es común el empleo de mazarotas con suficiente metal sobrante para permitir Ia localización del rechupe que se forma al final del período de solidificación de Ia pieza, permitiendo conseguir piezas sanas.Given the complex structure of the pieces to be molded and the lack of control of the metastatic pressure during stratified molding, it is common to use flasks with enough leftover metal to allow the location of the plug that forms at the end of the solidification period of the piece, allowing to get healthy pieces.
Una solución actual para evitar Ia formación de rechupes en el moldeo estratificado es descrita por José López Almendros, en Ia patente europea EP- 0640418, en Ia que se muestra un molde para moldeo estratificado donde cada uno de sus moldes apilables incluye un apéndice en su extremo correspondiente a Ia cavidad de moldeo para control de un rechupe que queda dispuesto en el interior de Ia pieza, en zona alejada de Ia superficie exterior de Ia misma, por Io que se efectúa el llenado total de Ia cavidad de moldeo sin el empleo de mazarotas.
En vista de Io anterior, y a Ia actual necesidad de reducción del precio en las piezas, conjuntamente con Ia obtención de una elevada calidad en las mismas, se ha hace necesario en Ia industria ofrecer un método y un molde para moldeo estratificadoA current solution to avoid the formation of rechupes in the stratified molding is described by José López Almendros, in the European patent EP-0640418, in which a mold for stratified molding is shown where each of its stackable molds includes an appendix in its end corresponding to the molding cavity for control of a plug that is arranged inside the part, in an area away from the outer surface thereof, whereby the total filling of the molding cavity is effected without the use of mazarotas. In view of the above, and the current need for price reduction in parts, together with obtaining a high quality of them, it has become necessary in the industry to offer a method and a mold for stratified molding
5 que mediante el control de Ia presión metalostática y una adecuada distribución de temperatura en el molde durante el vaciado del metal fundido permita lograr un óptimo aprovechamiento del metal utilizado en Ia colada, Io que se traduce en un elevado coeficiente de utilización de dicha masa de metal y que permita simultáneamente Ia obtención de un número mayor de piezas con alta calidad para un5 that through the control of the metastatic pressure and an adequate distribution of temperature in the mold during the casting of the molten metal allows to achieve an optimum use of the metal used in the casting, which translates into a high coefficient of use of said mass of metal and that allows simultaneously obtaining a greater number of pieces with high quality for a
10 espacio determinado de moldes apilables, a efectos de conseguir una mayor productividad.10 determined space of stackable molds, in order to achieve greater productivity.
SUMARIO DE LA INVENCIÓNSUMMARY OF THE INVENTION
15. En vista de Io anteriormente descrito y con el propósito de dar solución a las limitantes encontradas. Es objeto de la invención ofrecer un molde para moldeo estratificado con compensación de presión metalostática formado por uno o más moldes apilables formados por una cavidad de colada en forma generalmente romboidal de doble tronco .de cono y una o más cavidades de moldeo conectadas a Ia15. In view of the above and with the purpose of solving the limitations found. It is an object of the invention to offer a mold for stratified molding with metastatic pressure compensation formed by one or more stackable molds formed by a generally rhomboid shaped casting cavity with a double trunk. Of cone and one or more molding cavities connected to the
20 cavidad de colada por uno o más conductos de alimentación; tal que cada cavidad de colada de cada molde apilable se interconectan para formar un colector central de llenado, y cada cavidad de colada permite ir compensando Ia presión metalostática del metal fundido durante su vaciado por el colector central de llenado para lograr un llenado generalmente uniforme de cada una de las cavidades de moldeo de cada uno20 casting cavity through one or more feeding ducts; such that each casting cavity of each stackable mold is interconnected to form a central filling manifold, and each casting cavity allows to compensate for the metastatic pressure of the molten metal during its emptying by the central filling manifold to achieve a generally uniform filling of each of the molding cavities of each
25 de los moldes apilables.25 of the stackable molds.
Es también objeto de Ia invención ofrecer un molde apilable que incluye una cavidad de colada en forma generalmente romboidal de doble tronco de cono y una o
más cavidades de moldeo conectadas a dicha cavidad de colada por uno o más conductos de alimentación; tal que Ia cavidad de colada permite ir compensando Ia presión metalostática del metal fundido durante su vaciado para lograr un llenado generalmente uniforme de cada una de las cavidades de moldeo.It is also the object of the invention to offer a stackable mold that includes a generally rhomboid shaped cone cavity with a double cone trunk and one or more more molding cavities connected to said casting cavity by one or more feeding ducts; such that the casting cavity allows compensating the metastatic pressure of the molten metal during its emptying to achieve a generally uniform filling of each of the molding cavities.
Finalmente es objeto también de Ia invención ofrecer un método para moldeo estratificado con compensación de presión metalostática, el método incluye los pasos de: (a) formar una molde para moldeo estratificado a partir de una pluralidad de moldes apilables dispuestos uno sobre otro en columna vertical, cada molde apilable incluye una cavidad de colada en forma generalmente romboidal de doble tronco de cono; y una o más cavidades de moldeo conectadas a Ia cavidad de colada por uno o más conductos de alimentación; en donde los moldes apilables se disponen de forma que sus respectivas cavidades de colada se sitúen una sobre otra para formar un colector central de llenado; y (b) vaciar metal fundido en el colector central de llenado para que el metal fundido fluya a través de cada cavidad de colada y vaya llenando las cavidades de moldeo desde el molde apilable inferior hasta el molde apilable superior; donde cada cavidad de colada permite ir compensando Ia presión metalostática del metal fundido durante su vaciado para lograr un llenado generalmente uniforme de cada una de las cavidades de moldeo de cada molde apilable.Finally, it is also the object of the invention to offer a method for stratified molding with metastatic pressure compensation, the method includes the steps of: (a) forming a mold for stratified molding from a plurality of stackable molds arranged one above the other in a vertical column , each stackable mold includes a generally rhomboidal shaped cone with a double cone trunk; and one or more molding cavities connected to the casting cavity by one or more feeding ducts; where the stackable molds are arranged so that their respective casting cavities are placed one above the other to form a central filling manifold; and (b) emptying molten metal into the central filling manifold so that molten metal flows through each casting cavity and fills the molding cavities from the lower stackable mold to the upper stackable mold; where each casting cavity allows the metastatic pressure of the molten metal to be compensated during its emptying to achieve a generally uniform filling of each of the molding cavities of each stackable mold.
DESCRIPCIÓN BREVE DE LAS FIGURASBRIEF DESCRIPTION OF THE FIGURES
Los detalles característicos de Ia invención, se describen en los siguientes párrafos en conjunto con las figuras que Io acompañan, los cuales son con el propósito de definir al invento pero sin limitar el alcance de éste.The characteristic details of the invention are described in the following paragraphs in conjunction with the accompanying figures, which are for the purpose of defining the invention but without limiting its scope.
Figura 1 ilustra una vista en perspectiva esquemática de un molde para moldeo estratificado de acuerdo al invento.
Figura 2 ilustra una vista esquemática en sección transversal por el plano de corte 2-2 ' indicado en Ia Figura 1 de un molde para moldeo estratificado de acuerdo al invento.Figure 1 illustrates a schematic perspective view of a mold for stratified molding according to the invention. Figure 2 illustrates a schematic cross-sectional view through the cutting plane 2-2 ' indicated in Figure 1 of a mold for stratified molding according to the invention.
Figura 3 ilustra una vista esquemática en sección longitudinal por el plano de corte 3-3 ' indicado en Ia Figura 1 de un molde para moldeo estratificado de acuerdo al invento.Figure 3 illustrates a schematic view in longitudinal section along the 3-3 ' cutting plane indicated in Figure 1 of a mold for stratified molding according to the invention.
Figura 4 ilustra un vista esquemática a detalle en sección longitudinal de una realización de cavidad de colada de un molde apilable de acuerdo al invento.Figure 4 illustrates a schematic detail view in longitudinal section of an embodiment of the casting cavity of a stackable mold according to the invention.
DESCRIPCIÓN DETALLADA DE LA INVENCIÓNDETAILED DESCRIPTION OF THE INVENTION
El termino "molde para moldeo estratificado", en el contexto de Ia presente descripción, significa un molde formado por uno o más moldes apilables dispuestos uno sobre otro en columna vertical.The term "mold for stratified molding", in the context of the present description, means a mold formed by one or more stackable molds arranged one above the other in a vertical column.
El termino "molde apilable", en el contexto de Ia presente descripción, significa cada uno de los bloques de molde que forman el molde para moldeo estratificado, que incluye las cavidades de moldeo, cavidad de colada y conductos de alimentación.The term "stackable mold", in the context of the present description, means each one of the mold blocks that form the mold for stratified molding, which includes the molding cavities, casting cavity and feeding ducts.
El termino "moldeo", en el contexto de Ia presente descripción, significa proceso de fabricación de piezas basado en verter metales fundidos en Ia cavidad de moldeo de un molde, para obtener tras Ia solidificación y enfriamiento una pieza que es reproducción de Ia cavidad de moldeo.
El termino "cavidad de moldeo", en el contexto de Ia presente descripción, significa espacio hueco dentro de un molde que representa Ia forma de Ia pieza a ser moldeada.The term "molding", in the context of the present description, means manufacturing process of parts based on pouring molten metals into the mold cavity of a mold, to obtain after solidification and cooling a piece that is reproduction of the cavity of molding The term "molding cavity", in the context of the present description, means hollow space within a mold that represents the shape of the piece to be molded.
El termino "cavidad de colada", en el contexto de Ia presente descripción, significa espacio hueco dentro de un molde empleado para distribuir y alimentar a través del conducto de alimentación el metal fundido a Ia cavidad de moldeo.The term "casting cavity", in the context of the present description, means hollow space within a mold used to distribute and feed the molten metal through the feeding conduit to the molding cavity.
El termino "conducto de alimentación", en el contexto de Ia presente descripción, significa paso para el metal fundido que conecta Ia cavidad de colada con una cavidad de moldeo.The term "feeding duct", in the context of the present description, means passage for the molten metal that connects the casting cavity with a molding cavity.
El termino "presión metalostática", en el contexto de Ia presente descripción, significa Ia presión estática ejercida por el metal fundido en las paredes internas del molde para moldeo estratificado y de sus moldes apilables.The term "metastatic pressure", in the context of the present description, means the static pressure exerted by the molten metal on the internal walls of the mold for stratified molding and its stackable molds.
Con referencia a las Figuras 1, 2, 3 y 4 se ilustra un molde para moldeo estratificado de acuerdo al invento. El molde para moldeo estratificado 10 está formado por uno o más moldes apilables 20 que a su vez cada uno está formado por una cavidad de colada 30 y una o más cavidades de moldeo 40 conectadas entre sí por uno o más conductos de alimentación 50. Cada molde apilable 20 puede ser un molde de arena, un molde permanente, o un molde cerámico.With reference to Figures 1, 2, 3 and 4, a mold for stratified molding according to the invention is illustrated. The mold for stratified molding 10 is formed by one or more stackable molds 20 which in turn each is formed by a casting cavity 30 and one or more molding cavities 40 connected to each other by one or more feed ducts 50. Each stackable mold 20 can be a sand mold, a permanent mold, or a ceramic mold.
La cavidad de colada 30 y las cavidades de moldeo 40 de cada molde apilable 20 se forman a partir del ensamble de una parte de molde superior 60 con una parte de molde inferior 70 mediante un mecanismo generalmente de macho-hembra.The casting cavity 30 and the molding cavities 40 of each stackable mold 20 are formed from the assembly of an upper mold part 60 with a lower mold part 70 by a generally male-female mechanism.
Cada una de las cavidades de colada 30 tienen una forma generalmente
romboidal de doble tronco de cono y se ¡nterconectan en forma vertical para formar un colector central de llenado 80, por el cual un flujo de metal fundido, a medida que se va vertiendo en el molde para moldeo estratificado 10, va llenando sucesivamente las cavidades de colada 30 de los moldes apilables 20 empezando por los de Ia parte inferior hasta llegar a los de Ia parte superior. A medida que se va llenando de metal fundido cada cavidad de colada 30 se van llenando los cavidades de moldeo 40 conectadas a ella.Each of the casting cavities 30 have a generally shaped double cone rhomboidal and interconnect vertically to form a central filling manifold 80, whereby a flow of molten metal, as it is poured into the mold for stratified molding 10, successively fills the cavities of casting 30 of the stackable molds 20 starting with those of the lower part until reaching those of the upper part. As each casting cavity 30 is filled with molten metal, the molding cavities 40 connected to it are filled.
La forma generalmente romboidal de doble tronco de cono de cada una de las cavidades de colada 30 permite ir compensando Ia presión metalostática del metal fundido durante su vaciado por el colector central de llenado 80, por Io cual se logra un llenado generalmente uniforme de cada una de las cavidades de moldeo 40 de cada uno de los moldes apilables 20.The generally rhomboidal shape of the double cone trunk of each of the casting cavities 30 makes it possible to compensate for the metastatic pressure of the molten metal during its emptying by the central filling manifold 80, whereby a generally uniform filling of each one is achieved. of the mold cavities 40 of each of the stackable molds 20.
La forma romboidal de doble tronco de cono de cada una de las cavidades de colada 30 se forma a partir de una cavidad superior 110 en Ia parte de molde superior 60 en forma de tronco de cono con una base menor y una base mayor, y una cavidad inferior en Ia parte de molde inferior 70 también en forma de tronco de cono con una base menor y una base mayor, de tal manera que al ensamblarse Ia parte de molde superior 60 con Ia parte de molde inferior 70, para integrar un molde apilable 20, Ia cavidad superior 110 y Ia cavidad inferior 120 quedan opuestas entre sí y unidos por su respectiva base mayor. La cavidad superior 110 o cavidad inferior 120 puede tener forma de campana, forma de tronco de pirámide, forma de segmento esférico de dos bases o combinaciones de estas formas.The double cone-shaped rhomboidal shape of each of the casting cavities 30 is formed from an upper cavity 110 in the upper mold part 60 in the form of a cone trunk with a smaller base and a larger base, and a lower cavity in the lower mold part 70 also in the form of a cone trunk with a smaller base and a larger base, such that when the upper mold part 60 is assembled with the lower mold part 70, to integrate a stackable mold 20, the upper cavity 110 and the lower cavity 120 are opposed to each other and joined by their respective major base. The upper cavity 110 or lower cavity 120 may have a bell shape, a pyramid trunk shape, a spherical segment shape with two bases or combinations of these shapes.
Durante el vaciado del metal fundido por el colector central de llenado 80 y a medida que se va llenando Ia cavidad inferior 120 de cada molde apilable 20, Ia presión metalostática va disminuyendo conforme aumenta el área transversal de esta
cavidad y en contra parte a medida que se va llenando Ia cavidad superior HO de cada molde apllable 20, Ia presión metalostática va aumentando conforme disminuye el área transversal de esta cavidad. Esta compensación de presión metalostática del metal fundido a través de su paso por las cavidades de colada 30 permite ir llenado de manera uniforme y sin formación de contracciones cada una de las cavidades de moldeo 40, por lo que se eliminan los rechupes sin necesidad de uso de mazarotas.During the casting of molten metal by the central filling manifold 80 and as the lower cavity 120 of each stackable mold 20 is filled, the metastatic pressure decreases as the transverse area of this cavity and against the other hand as the upper cavity HO of each malleable mold 20 is filled, the metastatic pressure increases as the cross-sectional area of this cavity decreases. This metastatic pressure compensation of the molten metal through its passage through the casting cavities 30 allows each of the molding cavities 40 to be filled uniformly and without contraction, so that the plugs are removed without the need for use. of mazarotas.
En cada cavidad de colada 30, Ia base menor de Ia cavidad superior 110 es menor que Ia base menor de Ia cavidad inferior 120; mientras que Ia base mayor de Ia cavidad superior 110 es menor que Ia base mayor de dicha cavidad inferior 120. Esta configuración permite formar un colector central de llenado 80 que va variando (desde arriba hacia abajo) de forma escalonada en su diámetro. Esta forma irregular de colector central de llenado 80 permite Ia formación de puntos calientes, en los puntos de unión de las cavidades de colada 30, durante el vaciado del metal fundido y por tanto se logra una distribución de temperatura en el molde para moldeo estratificado 10.In each casting cavity 30, the smaller base of the upper cavity 110 is smaller than the smaller base of the lower cavity 120; while the major base of the upper cavity 110 is smaller than the major base of said lower cavity 120. This configuration allows a central filling manifold 80 to be formed which varies (from top to bottom) in a stepped manner in its diameter. This irregular form of central filling manifold 80 allows the formation of hot spots, at the junction points of the casting cavities 30, during the casting of the molten metal and therefore a temperature distribution is achieved in the mold for stratified molding 10 .
En una realización alternativa, el molde para moldeo estratificado 10 incluye una copa de vaciado 90 por Ia cual se vierte el metal fundido y está ubicada en Ia parte superior del molde 10 y conectada al colector central de llenado 80 por su parte superior. La copa de vaciado 90 está definida por una cavidad en molde de forma de campana, forma de tronco de pirámide, forma de segmento esférico de dos bases y combinaciones de estas formas.In an alternative embodiment, the mold for stratified molding 10 includes a drain cup 90 through which the molten metal is poured and is located in the upper part of the mold 10 and connected to the central filling manifold 80 at its top. The drain cup 90 is defined by a bell-shaped mold cavity, pyramid trunk shape, spherical segment shape with two bases and combinations of these shapes.
En otra realización alternativa, el molde para moldeo estratificado 10 incluye una estabilizador de flujo 100 ubicado en Ia parte inferior del molde 10 y conectado al colector central de llenado 80 por su parte inferior. El estabilizador de flujo 100 está definido por una cavidad en molde de forma de campana, forma de tronco de
pirámide, forma de segmento esférico de una base, forma de segmento esférico de dos bases y combinaciones de estas formas.In another alternative embodiment, the mold for stratified molding 10 includes a flow stabilizer 100 located in the lower part of the mold 10 and connected to the central filling manifold 80 at its bottom. The flow stabilizer 100 is defined by a bell-shaped mold cavity, trunk shape of pyramid, spherical segment shape of a base, spherical segment shape of two bases and combinations of these shapes.
La forma de Ia copa de vaciado 90 y del estabilizador de flujo 100 permite que no se formen burbujas durante el vaciado del metal fundido, debido a que contrarresta o amortigua Ia turbulencia del flujo.The shape of the drain cup 90 and the flow stabilizer 100 allows bubbles not to form during the casting of the molten metal, because it counteracts or dampens the turbulence of the flow.
De conformidad con las Figuras 1, 2, 3 y 4 antes descritas se observa un método para moldeo estratificado con compensación de presión metalostática, el método empieza al formar una molde para moldeo estratificado 10 a partir de una pluralidad de moldes apilables 20 (antes descritos) dispuestos uno sobre otro en columna vertical. Alternativamente se coloca una copa de vaciado 90 en Ia parte superior del molde para moldeo estratificado 10 y en Ia parte inferior un estabilizador de flujo 100, ambos conectados al colector central de llenado 80; para luego vaciar metal fundido en el colector central de llenado 80 para que el metal fundido fluya a través de cada cavidad de colada 30 y vaya llenando las cavidades de moldeo 40 desde el molde apilable 20 inferior hasta el molde apilable 20 superior; de tal manera que cada cavidad de colada 30 permite ir compensando Ia presión metalostática del metal fundido durante su vaciado para lograr un llenado generalmente uniforme de cada una de las cavidades de moldeo 40 de cada molde apilable 20. Así mismo, cada cavidad de colada va permitiendo Ia formación de puntos calientes durante el vaciado del metal fundido por el colector central de llenado 80 para lograr una distribución de temperatura a Io largo del molde para moldeo estratificado 10.In accordance with Figures 1, 2, 3 and 4 described above, a method for stratified molding with metastatic pressure compensation is observed, the method begins by forming a mold for stratified molding 10 from a plurality of stackable molds 20 (described above) ) arranged one above the other in a vertical column. Alternatively, a drain cup 90 is placed in the upper part of the mold for stratified molding 10 and in the lower part a flow stabilizer 100, both connected to the central filling manifold 80; then emptying molten metal in the central filling manifold 80 so that the molten metal flows through each casting cavity 30 and fills the molding cavities 40 from the lower stackable mold 20 to the upper stackable mold 20; in such a way that each casting cavity 30 allows the metastatic pressure of the molten metal to be compensated during its emptying to achieve a generally uniform filling of each of the molding cavities 40 of each stackable mold 20. Likewise, each casting cavity is allowing the formation of hot spots during the casting of molten metal by the central filling manifold 80 to achieve a temperature distribution along the mold for stratified molding 10.
En base a las realizaciones descritas anteriormente, se contempla que las modificaciones a los ambientes de realización descritos, así como a los ambientes de realización alternativos serán considerados evidentes para una persona experta en el arte de Ia técnica bajo Ia presente descripción. Es por Io tanto, contemplado que las
reivindicaciones abarcan dichas modificaciones y alternativas que estén dentro del alcance del presente invento o sus equivalentes.
Based on the embodiments described above, it is contemplated that the modifications to the described realization environments, as well as to the alternative realization environments will be considered evident to a person skilled in the art of the technique under the present description. It is therefore contemplated that the Claims encompass such modifications and alternatives that are within the scope of the present invention or its equivalents.
Claims
1. Un molde para moldeo estratificado con compensación de presión metalostática formado por uno o más moldes apilables, caracterizado porque cada molde apilable incluye: una cavidad de colada en forma generalmente romboidal de doble tronco de cono; y una o más cavidades de moldeo conectadas a dicha cavidad de colada por uno o más conductos de alimentación; donde cada cavidad de colada de cada molde apilable se interconectan para formar un colector central de llenado y donde cada cavidad de colada permite ir compensando Ia presión metalostática del metal fundido durante su vaciado por dicho colector central de llenado para lograr un llenado generalmente uniforme de cada una de dichas cavidades de moldeo de cada uno de dichos moldes apilables.1. A mold for stratified molding with metastatic pressure compensation formed by one or more stackable molds, characterized in that each stackable mold includes: a generally rhomboid shaped casting cavity with double cone trunk; and one or more molding cavities connected to said casting cavity by one or more feeding ducts; where each casting cavity of each stackable mold is interconnected to form a central filling manifold and where each casting cavity allows the metastatic pressure of the molten metal to be compensated during its emptying by said central filling manifold to achieve a generally uniform filling of each one of said molding cavities of each of said stackable molds.
2. El molde para moldeo estratificado de Ia reivindicación 1, caracterizado porque cada molde apilable se forma por una parte de molde superior y un parte de molde inferior ensamblados para definir dicha cavidad de colada y dichas cavidades de moldeo.2. The stratified molding mold of claim 1, characterized in that each stackable mold is formed by an upper mold part and a lower mold part assembled to define said casting cavity and said molding cavities.
3. El molde para moldeo estratificado de Ia reivindicación 1, caracterizado porque en dicha cavidad de colada incluye: una cavidad superior en forma tronco de cono con una base menor y una base mayor; y una cavidad inferior en forma de tronco de cono con una base menor y una base mayor; donde dicha cavidad superior y dicha cavidad inferior son opuesto entre sí y están unidos por su respectiva base mayor. 3. The mold for stratified molding of claim 1, characterized in that in said casting cavity includes: an upper cone-shaped cavity with a smaller base and a larger base; and a lower cone-shaped cavity with a smaller base and a larger base; wherein said upper cavity and said lower cavity are opposite each other and are joined by their respective major base.
4. El molde para moldeo estratificado de Ia reivindicación 3, caracterizado porque Ia base menor de dicha cavidad superior es menor que Ia base menor de dicha cavidad inferior.4. The mold for stratified molding of claim 3, characterized in that the smaller base of said upper cavity is smaller than the smaller base of said lower cavity.
5. El molde para moldeo estratificado de Ia reivindicación 3, caracterizado porque Ia base mayor de dicha cavidad superior es menor que Ia base mayor de dicha cavidad inferior.5. The mold for stratified molding of claim 3, characterized in that the larger base of said upper cavity is smaller than the larger base of said lower cavity.
6. El molde para moldeo estratificado de Ia reivindicación 3, caracterizado porque dicha cavidad inferior permite ir bajando Ia presión metalostática durante el vaciado del metal fundido por dicho colector central de llenado para alimentar las contracciones que se puedan formar en dichas cavidades de moldeo y así eliminar rechupes.6. The mold for stratified molding of claim 3, characterized in that said lower cavity allows the metastatic pressure to be lowered during the emptying of the molten metal by said central filling manifold to feed the contractions that can be formed in said molding cavities and thus Remove plugs.
7. El molde para moldeo estratificado de Ia reivindicación 3, caracterizado porque dicha cavidad superior permite ir elevando Ia presión metalostática durante el vaciado del metal fundido por dicho colector central de llenado para alimentar las contracciones que se puedan formar en dichas cavidades de moldeo y así eliminar rechupes.7. The mold for stratified molding of claim 3, characterized in that said upper cavity allows to raise the metastatic pressure during the emptying of the molten metal by said central filling manifold to feed the contractions that can be formed in said molding cavities and thus Remove plugs.
8. El molde para moldeo estratificado de Ia reivindicación 3, caracterizado porque dicha cavidad superior tiene una forma seleccionada de un grupo que comprende forma de campana, forma de tronco de pirámide, forma de segmento esférico de dos bases o combinaciones de estas formas.8. The mold for stratified molding of claim 3, characterized in that said upper cavity has a shape selected from a group comprising bell shape, pyramid trunk shape, spherical segment shape of two bases or combinations of these shapes.
9. El molde para moldeo estratificado de Ia reivindicación 3, caracterizado porque, dicha cavidad inferior tiene una forma seleccionada de un grupo que comprende forma de campana, forma de tronco de pirámide, forma de segmento esférico de dos bases y combinaciones de estas formas.9. The mold for stratified molding of claim 3, characterized in that said lower cavity has a shape selected from a group comprising bell shape, pyramid trunk shape, spherical segment shape with two bases and combinations of these shapes.
10. El molde para moldeo estratificado de la reivindicación 1, caracterizado porque además incluye una copa de vaciado ubicada en Ia parte superior de dicho molde y conectada a dicho colector centra) de llenado.10. The mold for stratified molding of claim 1, characterized in that it also includes a drain cup located in the upper part of said mold and connected to said filling manifold).
11. El molde para moldeo estratificado de Ia reivindicación 10, caracterizado porque dicha copa de vaciado tiene una forma seleccionada de un grupo que compreηde forma de campana, forma de tronco de pirámide, forma de segmento esférico de dos bases y combinaciones de estas formas.11. The mold for stratified molding of claim 10, characterized in that said emptying cup has a shape selected from a group comprising bell shape, pyramid trunk shape, spherical segment shape of two bases and combinations of these shapes.
12. El molde para moldeo estratificado de Ia reivindicación 1, caracterizado porque además incluye un estabilizador de flujo ubicado en Ia parte inferior de dicho molde y conectado a dicho colector central de llenado.12. The mold for stratified molding of claim 1, characterized in that it also includes a flow stabilizer located in the lower part of said mold and connected to said central filling manifold.
13. El molde para moldeo estratificado de Ia reivindicación 12, caracterizado porque dicho estabilizador de flujo tiene una forma seleccionada de un grupo que comprende forma de campana, forma de tronco de pirámide, forma de segmento esférico de una base, forma de segmento esférico de dos bases y combinaciones de estas formas.13. The mold for stratified molding of claim 12, characterized in that said flow stabilizer has a shape selected from a group comprising bell shape, pyramid trunk shape, spherical segment shape of a base, spherical segment shape of two bases and combinations of these forms.
14. El molde para moldeo estratificado de Ia reivindicación 1, caracterizado porque además cada cavidad de colada permite Ia formación de puntos calientes durante el vaciado del metal fundido por dicho colector central de llenado para lograr una distribución de temperatura en dicho molde.14. The mold for stratified molding of claim 1, characterized in that in addition each casting cavity allows the formation of hot spots during the casting of molten metal by said central filling manifold to achieve a temperature distribution in said mold.
15. Un molde apilable caracterizado por comprender: una cavidad de colada en forma generalmente romboidal de doble tronco de cono; y una o más cavidades de moldeo conectadas a dicha cavidad de colada por uno o más conductos de alimentación; donde dicha cavidad de colada permite ir compensando Ia presión metalostática del metal fundido durante su vaciado para lograr un llenado generalmente uniforme de cada una de dichas cavidades de moldeo.15. A stackable mold characterized by comprising: a generally rhomboidal shaped cone cavity with a double cone trunk; and one or more molding cavities connected to said casting cavity by one or more feeding ducts; where said casting cavity allows the metastatic pressure of the molten metal to be compensated during its emptying to achieve a generally uniform filling of each of said molding cavities.
16. El molde apilable de Ia reivindicación 15, caracterizado porque se forma por una parte de molde superior y un parte de molde inferior ensamblados para definir dicha cavidad de colada y dichas cavidades de moldeo.16. The stackable mold of claim 15, characterized in that it is formed by an upper mold part and a lower mold part assembled to define said casting cavity and said molding cavities.
17. El molde apilable de Ia reivindicación 15, caracterizado porque en dicha cavidad de colada incluye: una cavidad superior en forma tronco de cono con una base menor y una base mayor; y una cavidad inferior en forma de tronco de cono con una base menor y una base mayor; donde dicha cavidad superior y dicha cavidad inferior son opuesto entre sí y están unidos por su respectiva base mayor.17. The stackable mold of claim 15, characterized in that in said casting cavity includes: an upper cavity in the shape of a cone with a smaller base and a larger base; and a lower cone-shaped cavity with a smaller base and a larger base; wherein said upper cavity and said lower cavity are opposite each other and are joined by their respective major base.
18. El molde apilable de Ia reivindicación 17, caracterizado porque Ia base menor de dicha cavidad superior es menor que Ia base menor de dicha cavidad inferior.18. The stackable mold of claim 17, characterized in that the smaller base of said upper cavity is smaller than the smaller base of said lower cavity.
19. El molde apilable de Ia reivindicación 17, caracterizado porque Ia base mayor de dicha cavidad superior es menor que Ia base mayor de dicha cavidad inferior. 19. The stackable mold of claim 17, characterized in that the larger base of said upper cavity is smaller than the larger base of said lower cavity.
20. El molde apilable de Ia reivindicación 17, caracterizado porque dicha cavidad inferior permite ir bajando Ia presión metalostática durante el vaciado del metal fundido por dicho colector central de llenado para alimentar las contracciones que se puedan formar en dichas cavidades de moldeo y así eliminar rechupes.20. The stackable mold of claim 17, characterized in that said lower cavity allows the metastatic pressure to be lowered during the emptying of the molten metal by said central filling manifold to feed the contractions that can be formed in said molding cavities and thus eliminate plugs .
21. El molde apilable de Ia reivindicación 17, caracterizado porque dicha cavidad superior permite ir elevando Ia presión metalostática durante el vaciado del metal fundido por dicho colector central de llenado para alimentar las contracciones que se puedan formar en dichas cavidades de moldeo y así eliminar rechupes.21. The stackable mold of claim 17, characterized in that said upper cavity allows the metastatic pressure to be raised during the emptying of the molten metal by said central filling manifold to feed the contractions that can be formed in said molding cavities and thus eliminate plugs .
22. El molde apilable de Ia reivindicación 17, caracterizado porque dicha cavidad superior tiene una forma seleccionada de un grupo que comprende forma de campana, forma de tronco de pirámide, forma de segmento esférico de dos bases y combinaciones de estas formas.22. The stackable mold of claim 17, characterized in that said upper cavity has a shape selected from a group comprising bell shape, pyramid trunk shape, spherical segment shape of two bases and combinations of these shapes.
23. El molde apilable de Ia reivindicación 17, caracterizado porque dicho cavidad inferior tiene una forma seleccionada de un grupo que comprende forma de campana, forma de tronco de pirámide, forma de segmento esférico de dos bases y combinaciones de estas formas.23. The stackable mold of claim 17, characterized in that said lower cavity has a shape selected from a group comprising bell shape, pyramid trunk shape, spherical segment shape of two bases and combinations of these shapes.
24. El molde apilable de Ia reivindicación 15, caracterizado porque además dicha cavidad de colada permite Ia formación de puntos calientes durante el vaciado del metal fundido para lograr una distribución de temperatura en dicho molde.24. The stackable mold of claim 15, characterized in that said casting cavity also allows the formation of hot spots during the casting of molten metal to achieve a temperature distribution in said mold.
25. Un método para moldeo estratificado con compensación de presión metalostática, dicho método se caracteriza por comprender los pasos de: (a) formar una molde para moldeo estratificado a partir de una pluralidad de moldes apilables dispuestos uno sobre otro en columna vertical, cada molde apilable incluye: una cavidad de colada en forma generalmente romboidal de doble tronco de cono; y una o más cavidades de moldeo conectadas a dicha cavidad de colada por uno o más conductos de alimentación; en donde los moldes apilables se disponen de forma que sus respectivas cavidades de colada se sitúen una sobre otra para formar un colector central de llenado; y25. A method for stratified molding with metastatic pressure compensation, said method is characterized by comprising the steps of: (a) forming a mold for stratified molding from a plurality of stackable molds arranged on top of each other in a vertical column, each stackable mold includes: a generally rhomboid shaped casting cavity with a double cone trunk; and one or more molding cavities connected to said casting cavity by one or more feeding ducts; where the stackable molds are arranged so that their respective casting cavities are placed one above the other to form a central filling manifold; Y
(b) vaciar metal fundido en dicho colector central de llenado para que el metal fundido fluya a través de cada cavidad de colada y vaya llenando las cavidades de moldeo desde el molde apilable inferior hasta el molde apilable superior; donde cada cavidad de colada permite ir compensando Ia presión metalostática del metal fundido durante su vaciado para lograr un llenado generalmente uniforme de cada una de dichas cavidades de moldeo de cada molde apilable.(b) emptying molten metal into said central filling manifold so that molten metal flows through each casting cavity and fills the molding cavities from the lower stackable mold to the upper stackable mold; where each casting cavity allows the metastatic pressure of the molten metal to be compensated during its emptying to achieve a generally uniform filling of each of said molding cavities of each stackable mold.
26. El método de Ia reivindicación 25, caracterizado porque cada molde apilable se forma por una parte de molde superior y un parte de molde inferior ensamblados para definir dicha cavidad de colada y dichas cavidades de moldeo.26. The method of claim 25, characterized in that each stackable mold is formed by an upper mold part and a lower mold part assembled to define said casting cavity and said molding cavities.
27. El método de Ia reivindicación 25, caracterizado porque en dicha cavidad de colada incluye: una cavidad superior en forma tronco de cono con una base menor y una base mayor; y una cavidad inferior en forma de tronco de cono con una base menor y una base mayor; donde dicha cavidad superior y dicha cavidad inferior son opuesto entre sí y están unidos por su respectiva base mayor.27. The method of claim 25, characterized in that in said casting cavity includes: a cone-shaped upper cavity with a smaller base and a larger base; and a lower cone-shaped cavity with a smaller base and a larger base; wherein said upper cavity and said lower cavity are opposite each other and are joined by their respective major base.
28. El método de Ia reivindicación 27, caracterizado porque Ia base menor de dicha cavidad superior es menor que Ia base menor de dicha cavidad inferior.28. The method of claim 27, characterized in that the smaller base of said upper cavity is smaller than the smaller base of said lower cavity.
29. El método de Ia reivindicación 27, caracterizado porque Ia base mayor de dicha cavidad superior es menor que Ia base mayor de dicha cavidad inferior.29. The method of claim 27, characterized in that the larger base of said upper cavity is smaller than the larger base of said lower cavity.
30. El método de Ia reivindicación 27, caracterizado porque dicha cavidad inferior permite ir bajando Ia presión metalostática durante el vaciado del metal fundido por dicho colector central de llenado para alimentar las contracciones que se puedan formar en dichas cavidades de moldeo y así eliminar rechupes.30. The method of claim 27, characterized in that said lower cavity allows the metastatic pressure to be lowered during the emptying of the molten metal by said central filling manifold to feed the contractions that can be formed in said molding cavities and thus eliminate plugs.
31. El método de Ia reivindicación 27, caracterizado porque dicha cavidad superior permite ir elevando Ia presión metalostática durante el vaciado del metal fundido por dicho colector central de llenado para alimentar las contracciones que se puedan formar en dichas cavidades de moldeo y así eliminar rechupes.31. The method of claim 27, characterized in that said upper cavity allows the metastatic pressure to be raised during the emptying of the molten metal by said central filling manifold to feed the contractions that can be formed in said molding cavities and thus eliminate plugs.
32. El método de Ia reivindicación 27, caracterizado porque dicha cavidad superior tiene una forma seleccionada de un grupo que comprende forma de campana, forma de tronco de pirámide, forma de segmento esférico de dos bases o combinaciones de estas formas.32. The method of claim 27, characterized in that said upper cavity has a shape selected from a group comprising bell shape, pyramid trunk shape, spherical segment shape of two bases or combinations of these shapes.
33. El método dé Ia reivindicación 27, caracterizado porque dicha cavidad inferior tiene una forma seleccionada de un grupo que comprende forma de campana, forma de tronco de pirámide, forma de segmento esférico de dos bases y combinaciones de estas formas. 33. The method of claim 27, characterized in that said lower cavity has a shape selected from a group comprising bell shape, pyramid trunk shape, spherical segment shape of two bases and combinations of these shapes.
34. El método de Ia reivindicación 25, caracterizado porque dicho paso de formar una molde para moldeo estratificado a partir de una pluralidad de moldes apilables incluye los pasos de: colocar una copa de vaciado en Ia parte superior de dicho molde para moldeo estratificado y conectada a dicho colector central de llenado; y colocara un estabilizador de flujo en Ia parte inferior de dicho molde para moldeo estratificado y conectado a dicho colector central de llenado.34. The method of claim 25, characterized in that said step of forming a mold for stratified molding from a plurality of stackable molds includes the steps of: placing a drain cup on the top of said mold for stratified and connected molding to said central filling manifold; and placing a flow stabilizer in the lower part of said mold for stratified molding and connected to said central filling manifold.
35. El método de Ia reivindicación 34, caracterizado porque dicha copa de vaciado tiene una forma seleccionada de un grupo que comprende forma de campana, forma de tronco de pirámide, forma de segmento esférico de dos bases y combinaciones de estas formas.35. The method of claim 34, characterized in that said emptying cup has a shape selected from a group comprising bell shape, pyramid trunk shape, spherical segment shape of two bases and combinations of these shapes.
36. El método de Ia reivindicación 34, caracterizado porque dicho estabilizador de flujo tiene una forma seleccionada de un grupo que comprende forma de campana, forma de tronco de pirámide, forma de segmento esférico de una base, forma de segmento esférico de dos bases y combinaciones de estas formas.36. The method of claim 34, characterized in that said flow stabilizer has a shape selected from a group comprising bell shape, pyramid trunk shape, spherical segment shape of a base, spherical segment shape of two bases and combinations of these forms.
37. El método de Ia reivindicación 25, caracterizado porque además cada cavidad de colada permite la formación de puntos calientes durante el vaciado del metal fundido por dicho colector central de llenado para lograr una distribución de temperatura en dicho molde. 37. The method of claim 25, characterized in that each casting cavity also allows hot spots to be formed during the casting of molten metal by said central filling manifold to achieve a temperature distribution in said mold.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/670,461 US20100193151A1 (en) | 2007-07-25 | 2007-08-29 | Method and mould for stratified moulding with metalostatic pressure compensation |
| EP07834482A EP2191912A1 (en) | 2007-07-25 | 2007-08-29 | Method and mould for stratified moulding with metalostatic pressure compensation |
| BRPI0721865-6A2A BRPI0721865A2 (en) | 2007-07-25 | 2007-08-29 | METHOD AND TEMPLATE FOR STRATIFIED MOLDING WITH METALOSTATIC PRESSURE COMPENSATION |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MX2007008956A MX2007008956A (en) | 2007-07-25 | 2007-07-25 | Method and mould for a stratified molding action with metalostatic pressure compensation. |
| MXMX/A/2007/008956 | 2007-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009014412A1 true WO2009014412A1 (en) | 2009-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/MX2007/000101 WO2009014412A1 (en) | 2007-07-25 | 2007-08-29 | Method and mould for stratified moulding with metalostatic pressure compensation |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20100193151A1 (en) |
| EP (1) | EP2191912A1 (en) |
| BR (1) | BRPI0721865A2 (en) |
| MX (1) | MX2007008956A (en) |
| WO (1) | WO2009014412A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114012041B (en) * | 2021-10-11 | 2024-05-14 | 甘肃酒钢集团西部重工股份有限公司 | Casting device and casting method for producing small impeller by 3DP sand mold technology |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB895426A (en) * | 1959-06-17 | 1962-05-02 | Shell Moulding Foundry Ltd | Improvements in and relating to shell moulds and cores |
| US3628598A (en) * | 1968-10-23 | 1971-12-21 | Modern Equipment Co | Casting molds |
| ES421780A1 (en) * | 1972-12-27 | 1976-05-01 | Buhrer Erwin | Method and apparatus for production of casting molds |
| US4241492A (en) * | 1978-12-21 | 1980-12-30 | Wells Manufacturing Company | Process for manufacture of valve seat |
| JPS5930461A (en) * | 1982-08-11 | 1984-02-18 | Masami Michihiro | Stack casting method using mold |
| CS250253B1 (en) * | 1984-12-27 | 1987-04-16 | Karel Novak | Mould for small castings production |
| ES296248U (en) * | 1984-11-13 | 1987-10-16 | Galve Quiles Jose | New metal foundation procedure (Machine-translation by Google Translate, not legally binding) |
| ES2046078A2 (en) * | 1991-07-08 | 1994-01-16 | Metalogenia Sa | Improvements in the production of cast steel parts provided with inner cavities. |
-
2007
- 2007-07-25 MX MX2007008956A patent/MX2007008956A/en not_active Application Discontinuation
- 2007-08-29 BR BRPI0721865-6A2A patent/BRPI0721865A2/en not_active Application Discontinuation
- 2007-08-29 WO PCT/MX2007/000101 patent/WO2009014412A1/en active Application Filing
- 2007-08-29 EP EP07834482A patent/EP2191912A1/en not_active Withdrawn
- 2007-08-29 US US12/670,461 patent/US20100193151A1/en not_active Abandoned
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB895426A (en) * | 1959-06-17 | 1962-05-02 | Shell Moulding Foundry Ltd | Improvements in and relating to shell moulds and cores |
| US3628598A (en) * | 1968-10-23 | 1971-12-21 | Modern Equipment Co | Casting molds |
| ES421780A1 (en) * | 1972-12-27 | 1976-05-01 | Buhrer Erwin | Method and apparatus for production of casting molds |
| US4241492A (en) * | 1978-12-21 | 1980-12-30 | Wells Manufacturing Company | Process for manufacture of valve seat |
| JPS5930461A (en) * | 1982-08-11 | 1984-02-18 | Masami Michihiro | Stack casting method using mold |
| ES296248U (en) * | 1984-11-13 | 1987-10-16 | Galve Quiles Jose | New metal foundation procedure (Machine-translation by Google Translate, not legally binding) |
| CS250253B1 (en) * | 1984-12-27 | 1987-04-16 | Karel Novak | Mould for small castings production |
| ES2046078A2 (en) * | 1991-07-08 | 1994-01-16 | Metalogenia Sa | Improvements in the production of cast steel parts provided with inner cavities. |
| EP0640418A1 (en) | 1991-07-08 | 1995-03-01 | Metalogenia, S.A. | Improvements in the production of cast steel parts provided with inner cavities |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2191912A1 (en) | 2010-06-02 |
| US20100193151A1 (en) | 2010-08-05 |
| MX2007008956A (en) | 2007-09-07 |
| BRPI0721865A2 (en) | 2014-02-18 |
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