ES2729266T3 - Casting device for cast iron in a shell - Google Patents
Casting device for cast iron in a shell Download PDFInfo
- Publication number
- ES2729266T3 ES2729266T3 ES11177151T ES11177151T ES2729266T3 ES 2729266 T3 ES2729266 T3 ES 2729266T3 ES 11177151 T ES11177151 T ES 11177151T ES 11177151 T ES11177151 T ES 11177151T ES 2729266 T3 ES2729266 T3 ES 2729266T3
- Authority
- ES
- Spain
- Prior art keywords
- shell
- refrigerant
- channel
- sand mold
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- B22C—FOUNDRY MOULDING
- B22C21/00—Flasks; Accessories therefor
-
- 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
- B22C9/06—Permanent moulds for shaped castings
- B22C9/061—Materials which make up the mould
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Continuous Casting (AREA)
Abstract
Dispositivo para la colada de hierro fundido en una coquilla con una coquilla metálica de varias partes (1) que envuelve un molde de arena (3) en cuyo espacio hueco (4) se introduce el hierro fundido en estado de fusión, caracterizado por que entre la superficie de la pared interior de la coquilla (1) y la pared exterior del molde de arena (3) está formado al menos un espacio por el que fluye refrigerante (2).Device for casting cast iron in a shell with a multi-part metal shell (1) that wraps a sand mold (3) into whose hollow space (4) the molten iron is introduced in a state of fusion, characterized in that it enters The surface of the inner wall of the shell (1) and the outer wall of the sand mold (3) is formed at least one space through which refrigerant flows (2).
Description
DESCRIPCIÓNDESCRIPTION
Dispositivo para la colada de hierro fundido en una coquillaCasting device for cast iron in a shell
La presente invención se refiere a un dispositivo para la colada de hierro fundido en una coquilla con una coquilla metálica de varias partes que envuelve un molde de arena en cuyo espacio hueco se llena el hierro fundido en estado de fusión. Un dispositivo de este tipo se conoce por el documento DE 69923214 T2.The present invention relates to a device for casting cast iron in a shell with a multi-part metal shell that wraps a sand mold in whose hollow space the molten iron is filled in the melted state. Such a device is known from DE 69923214 T2.
En este dispositivo conocido debe conseguirse un enfriamiento controlado del material tras el llenado del molde de arena porque las varias partes de la coquilla presentan espacios huecos por los que fluye refrigerante siendo solicitados los mismos por el refrigerante según las condiciones de enfriamiento deseadas.In this known device, a controlled cooling of the material must be achieved after filling the sand mold because the various parts of the shell have hollow spaces through which refrigerant flows being requested by the refrigerant according to the desired cooling conditions.
No obstante, es difícil conseguir del todo el objetivo del enfriamiento controlado, puesto que la evacuación de calor tiene lugar aquí en primer lugar a través de la pared del molde de arena dispuesta entre la pieza de fundición y el lado interior de la coquilla y tiene lugar también a través de las paredes interiores de las partes de la coquilla.However, it is difficult to fully achieve the objective of controlled cooling, since heat evacuation takes place here firstly through the sand mold wall disposed between the casting and the inner side of the shell and has place also through the inner walls of the parts of the shell.
Algo similar es válido para una técnica conocida por el documento DE 10242559 A1 en la que para el control del comportamiento de enfriamiento de la arena de molde se incorporan en este último unos disipadores de calor de una densidad variable. No obstante, aquí no hay espacios huecos por los que fluya refrigerante.Something similar is valid for a technique known from DE 10242559 A1 in which heat dissipators of a variable density are incorporated in the latter to control the cooling behavior of the mold sand. However, there are no hollow spaces through which refrigerant flows.
Por el documento DE 100 14 591 C1 es conocido colocar tubos refrigerantes por los que fluye refrigerante en acanaladuras abiertas en el lado del espacio de colada de la caja de molde. Estos quedan a continuación unidos por fundición directamente con la pieza de trabajo con la masa fundida de metal que entra, lo que requiere un mecanizado posterior costoso.From DE 100 14 591 C1 it is known to place refrigerant tubes through which refrigerant flows in open grooves on the side of the casting space of the mold box. These are then joined by casting directly to the workpiece with the metal melt entering, which requires expensive subsequent machining.
En el documento DE 19926 322 A1 se propone hacer que un canal de refrigeración se extienda en el molde de arena cerca del contorno teniéndose en cuenta la forma de la pieza de trabajo. No se muestra una coquilla metálica de varias partes que envuelva el molde de arena.In DE 19926 322 A1 it is proposed to make a cooling channel extend in the sand mold near the contour taking into account the shape of the workpiece. A multi-part metal shell that wraps the sand mold is not shown.
Por el documento US 5,611, 388 se conoce un dispositivo para la colada de hierro fundido en una coquilla con una coquilla metálica de varias partes que envuelve un molde de arena en cuyo espacio hueco se llena el hierro fundido en estado de fusión. La coquilla está formada por una parte superior y una parte inferior que están provistas ambas con canales de refrigeración.From US 5,611, 388, a device for casting molten iron in a shell with a multi-part metal shell that surrounds a sand mold in whose hollow space the molten iron in the molten state is filled is known. The shell is formed by an upper part and a lower part that are both provided with cooling channels.
El documento US 2005/0103407 A1 muestra un molde para una culata con una parte metálica del molde, así como varias partes de molde de arena. Después la colada, se retira la parte metálica del molde para enfriar bruscamente la y la parte de la pieza de fundición puesta al descubierto se pulveriza con agua refrigerante y se enfría de este modo.US 2005/0103407 A1 shows a mold for a cylinder head with a metal part of the mold, as well as several parts of sand mold. After the casting, the metal part of the mold is removed to cool the mold sharply and the part of the casting found exposed is sprayed with cooling water and cooled in this way.
El documento WO 00/27567 A1 muestra un dispositivo para la colada de hierro fundido en una coquilla con una coquilla metálica de varias partes que envuelve un molde de arena en cuyo espacio hueco se llena el hierro fundido en estado de fusión.WO 00/27567 A1 shows a device for casting cast iron in a shell with a multi-part metal shell that wraps a sand mold in whose hollow space the molten iron is filled in the molten state.
El objetivo de la invención es conseguir no solo un enfriamiento mejor sino también una controlabilidad mejor de este enfriamiento. La solidificación de la pieza de fundición dirigida de este modo debe permitir conseguir propiedades de material y de estructura óptimas, reproducibles en la pieza de fundición/el componente. Finalmente, gracias al enfriamiento mejorado también deben conseguirse duraciones de ciclo más cortas y por lo tanto un mayor rendimiento de la fabricación.The aim of the invention is to achieve not only better cooling but also better controllability of this cooling. The solidification of the cast piece directed in this way should allow optimum material and structure properties to be achieved, reproducible in the cast piece / component. Finally, thanks to the improved cooling, shorter cycle times must also be achieved and therefore greater manufacturing performance.
En las reivindicaciones se indica la forma en la que puede conseguirse el objetivo planteado.The claims indicate the manner in which the stated objective can be achieved.
A continuación, la invención se explicará más detalladamente mediante la descripción de un ejemplo de realización con ayuda del dibujo adjunto. El dibujo muestra una vista en corte de un dispositivo de colada configurado de la forma propuesta.Next, the invention will be explained in more detail by describing an exemplary embodiment with the aid of the attached drawing. The drawing shows a sectional view of a casting device configured as proposed.
La coquilla 1 metálica dividida en dos partes envuelve un molde de arena 3, en el que se encuentra el espacio de colada o después de haber subido el relleno a través de cortes 6 la pieza de fundición. Este molde de arena puede fabricarse en un procedimiento habitual, como el procedimiento Croning, de caja fría o de caja caliente. En la pared interior de la coquilla 1 y en la pared exterior del molde de arena 3 están realizadas acanaladuras opuestas de una sección transversal semicircular que se complementan formando un canal 2, que se extiende de forma helicoidal desde una entrada de refrigerante 5 hasta una salida de refrigerante 8. Se sobrentiende que según la forma de la coquilla y del molde de arena pueden ser recomendables otras extensiones del canal o espacio de refrigerante, por ejemplo una extensión en forma de meandros.The metal shell 1 divided into two parts envelops a sand mold 3, in which the casting space is located or after the filling has been raised through cuts 6 the casting. This sand mold can be manufactured in a usual procedure, such as the Croning, cold box or hot box procedure. Opposite grooves of a semicircular cross-section are made on the inner wall of the shell 1 and on the outer wall of the sand mold 3, which complement each other forming a channel 2, which extends helically from a coolant inlet 5 to an outlet of coolant 8. It is understood that depending on the shape of the shell and the sand mold, other extensions of the coolant channel or space may be recommended, for example an extension in the form of meanders.
Otro canal de refrigerante 7, que aquí hace que haya un enfriamiento secundario, pasa por la coquilla 1 y está conectado con conexiones de alimentación y de evacuación no mostradas. Another refrigerant channel 7, which here causes secondary cooling, passes through the opening 1 and is connected to supply and discharge connections not shown.
El enfriamiento primario se realiza mediante un refrigerante que fluye por el canal de refrigerante 2. Como refrigerante sirve preferentemente aire o, en caso de ser conducido en un circuito cerrado, un gas inerte. Para hacer que el enfriamiento de la pieza de fundición se realice de forma óptima se controla sobre todo este enfriamiento primario correspondientemente, en particular mediante la cantidad y la temperatura inicial, la velocidad de flujo y la presión del refrigerante alimentado. Puesto que este llega en el presente caso como máximo hasta la pieza de fundición y está separada de esta solo por el espesor restante del molde de arena, se consigue un enfriamiento rápido selectivo que permite a su vez conseguir propiedades óptimas de la estructura, como estabilidad, dilatación, tenacidad, granulación fina y otras.The primary cooling is carried out by means of a refrigerant that flows through the refrigerant channel 2. Air is preferably used as a refrigerant or, if it is conducted in a closed circuit, an inert gas. In order to make the casting of the casting work in an optimal manner, this primary cooling is controlled, correspondingly, in particular by the amount and the initial temperature, the flow rate and the pressure of the refrigerant fed. Since in the present case it reaches up to the casting part and is separated from it only by the remaining thickness of the sand mold, selective rapid cooling is achieved, which in turn allows optimum structure properties, such as stability, to be achieved. , dilation, tenacity, fine granulation and others.
En variantes ventajosas, el refrigerante es un gas, preferentemente aire.In advantageous variants, the refrigerant is a gas, preferably air.
En variantes ventajosas, el flujo del refrigerante se consigue mediante alimentación del mismo bajo presión en la entrada de refrigerante.In advantageous variants, the flow of the refrigerant is achieved by feeding it under pressure at the refrigerant inlet.
En variantes ventajosas, el flujo del refrigerante se consigue mediante aspiración del mismo en la salida de refrigerante.In advantageous variants, the flow of the refrigerant is achieved by aspiration thereof in the refrigerant outlet.
En variantes ventajosas, el refrigerante fluye por un filtro antes de salir a la atmósfera. In advantageous variants, the refrigerant flows through a filter before leaving the atmosphere.
Claims (7)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010035440A DE102010035440B4 (en) | 2010-08-26 | 2010-08-26 | Apparatus for casting cast iron in a mold |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2729266T3 true ES2729266T3 (en) | 2019-10-31 |
Family
ID=44543093
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES11177151T Active ES2729266T3 (en) | 2010-08-26 | 2011-08-10 | Casting device for cast iron in a shell |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP2422901B1 (en) |
DE (1) | DE102010035440B4 (en) |
ES (1) | ES2729266T3 (en) |
HU (1) | HUE044935T2 (en) |
PL (1) | PL2422901T3 (en) |
PT (1) | PT2422901T (en) |
TR (1) | TR201907617T4 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014217701A1 (en) | 2014-09-04 | 2016-03-10 | Huppert Engineering Gmbh & Co. Kg | Process for producing metal casts |
US10391551B2 (en) * | 2017-02-06 | 2019-08-27 | Fisher Controls International Llc | Mold body with integrated chill |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5611388A (en) * | 1993-09-02 | 1997-03-18 | Mazda Motor Corporation | Method of and apparatus for low-pressure casting |
SE513287C2 (en) | 1998-11-06 | 2000-08-21 | Volvo Lastvagnar Ab | Method and apparatus for mold casting |
DE19926322A1 (en) * | 1999-06-09 | 2000-12-14 | Detlef Kochan | Plastics processing or metal casting tool has a closed structure and includes a cooling channel closely following the molding cavity profile and at a distance from it |
DE10014591C1 (en) * | 2000-03-27 | 2001-08-02 | Actech Gmbh Adv Casting Tech | Process for increasing pouring in sand molds with directional solidification of castings |
DE10242559A1 (en) * | 2002-09-13 | 2004-03-25 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Cooling body used as an insert for sand molds is made from a material which has a change in density during the production of the body so the whole material is penetrated by hollow chambers within the body |
JP4062292B2 (en) * | 2003-11-19 | 2008-03-19 | マツダ株式会社 | Light alloy casting manufacturing method |
-
2010
- 2010-08-26 DE DE102010035440A patent/DE102010035440B4/en not_active Expired - Fee Related
-
2011
- 2011-08-10 TR TR2019/07617T patent/TR201907617T4/en unknown
- 2011-08-10 ES ES11177151T patent/ES2729266T3/en active Active
- 2011-08-10 PT PT11177151T patent/PT2422901T/en unknown
- 2011-08-10 HU HUE11177151 patent/HUE044935T2/en unknown
- 2011-08-10 EP EP11177151.5A patent/EP2422901B1/en active Active
- 2011-08-10 PL PL11177151T patent/PL2422901T3/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP2422901A3 (en) | 2015-06-10 |
DE102010035440A1 (en) | 2012-03-01 |
PT2422901T (en) | 2019-06-12 |
HUE044935T2 (en) | 2019-11-28 |
PL2422901T3 (en) | 2019-08-30 |
TR201907617T4 (en) | 2019-06-21 |
DE102010035440B4 (en) | 2012-04-12 |
EP2422901A2 (en) | 2012-02-29 |
EP2422901B1 (en) | 2019-03-06 |
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