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EP0894557B2 - Process for shape casting and mould therefore - Google Patents

Process for shape casting and mould therefore Download PDF

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Publication number
EP0894557B2
EP0894557B2 EP98104851A EP98104851A EP0894557B2 EP 0894557 B2 EP0894557 B2 EP 0894557B2 EP 98104851 A EP98104851 A EP 98104851A EP 98104851 A EP98104851 A EP 98104851A EP 0894557 B2 EP0894557 B2 EP 0894557B2
Authority
EP
European Patent Office
Prior art keywords
casting
vertical channel
plunger
channel
casting mould
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.)
Expired - Lifetime
Application number
EP98104851A
Other languages
German (de)
French (fr)
Other versions
EP0894557B1 (en
EP0894557A1 (en
Inventor
Herbert Dipl.-Ing. Grolla
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heinrich Wagner Sinto Maschinenfabrik GmbH
Original Assignee
Heinrich Wagner Sinto Maschinenfabrik GmbH
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Filing date
Publication date
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Application filed by Heinrich Wagner Sinto Maschinenfabrik GmbH filed Critical Heinrich Wagner Sinto Maschinenfabrik GmbH
Publication of EP0894557A1 publication Critical patent/EP0894557A1/en
Publication of EP0894557B1 publication Critical patent/EP0894557B1/en
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Classifications

    • 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
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
    • 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
    • B22D35/04—Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners

Definitions

  • the invention relates to a method for pouring a mold having a mold box from below in increasing casting with a casting from a casting container through a riser channel, which is formed for the inflow of rising from below into the mold casting compound in the molding sand of the mold, wherein immediately interrupted after completion of the filling of the mold, the riser channel in the region of the molding sand and thus closed so that the mold is separable from the casting container.
  • the invention has for its object to enable the application of the known Verschplitechnik when casting a mold box having a mold from below in increasing casting with a casting material from a casting container through a riser.
  • the riser By shaped in the molding sand, reaching into the vicinity of the riser punch channel, which is oriented transversely to the axis of the riser, the riser can be securely shut off because a defined molding sand area is inserted through the punch in the riser.
  • a plug is arranged in the punch channel, which ensures that the punch channel remains closed even after the closing of the riser.
  • the discharge pressure is placed on the surface of the casting, so that the desired continuous. Working process is achieved because the mold can now be replaced immediately.
  • a particularly advantageous embodiment of the invention undergoes the casting process when the casting material in the casting container is exposed on its surface to a pneumatic delivery pressure and the casting material by at least one immersed in the casting compound, vertical riser and by the aligned with the riser and with this a common Riser is pressed for the inflow of the casting material forming riser into the mold located above the riser.
  • the entire riser extends perpendicularly and is accessible in the region of the riser channel of a constriction made in the casting mold.
  • a mold 1, 2 consists of two vertically divided mold halves 1 and 2 with a molding sand enclosed mold cavity 3, in which a central, directed vertically downwards, formed in the molding sand riser 4 opens; the riser channel 4 with a best circular cross-section ends on the other hand at the free end face 10 of a likewise vertically running riser 8, which is aligned with the riser channel 4 and forms with it a permeable for a casting compound 7 riser 4, 8 as long as the mold. 1 , 2 is placed on a casting container 5, 6.
  • the casting container 5, 6 is composed of a crucible 6 and a patch on the crucible 6 head piece 5, which closes the crucible 6 tight and except the centrally arranged riser 8 still has a pipe socket 9, both above the surface 11 of the in the Crucible 6 located liquid casting 7 end.
  • the pipe socket serves. 9 for the flow connection of the casting container 5, 6 with a compressed air source.
  • a hydraulic piston motor 12 is installed, the plunger 13 in a direction perpendicular to the axis of the riser channel 4 in the direction 14 Casting mold 1, 2 is movable and thereby exerts a stamping pressure on the molding sand therein.
  • the plunger 13 exerts its stamping force directly on the mold sand 1, 2 completely filling and only the mold cavity 3 and the riser channel 4 free molding sand, wherein the plunger 13 (Fig. 2) after the casting so far into the mold 1, 2 is retracted until the riser channel 4 is interrupted by compacted and pressed in its cross section molding sand and so a backflow of the filled already in the mold cavity 3 molding compound 7 is prevented.
  • the first diametrically opposed plunger can be provided to also charge on the opposite side of the mold 1, 2 the molding sand accordingly and in this way to be able to constrict the riser 4 from two sides.
  • a punch channel 15 or 16 is formed in the casting mold 1, 2, which is adapted in the direction 14 and in its cross section to the plunger 13 and up to the riser channel 4 (FIG 4) or beyond (FIGS. 5, 6).
  • the punch channel 15 alone can serve to facilitate the work of the plunger 13, in the arrangement of Fig. 4, a plug 17 is inserted into a mating punch channel 16, from the plunger 13 to the closure of the riser 4 is displaceable.
  • a plug 17 is inserted into a mating punch channel 16, from the plunger 13 to the closure of the riser 4 is displaceable.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

The method concerns casting, according to which a melt (7) from a melt container (5, 6) is introduced from below through a riser channel (4) in the mould sand into a mould (1, 2). The riser channel (4) in the mould sand is closed immediately after the end of the mould filling process so that the mould (1, 2) can be separated from the melt container (5, 6). The claimed mould has a channel with an open outer end in which a plunger is formed in the mould sand.

Description

Die Erfindung betrifft ein Verfahren für das Abgießen einer einen Formkasten aufweisenden Gießform von unten in steigendem Guss mit einer Gießmasse aus einem Gießbehälter durch einen Steigkanal, der für die Einströmung der von unten in die Gießform aufsteigend einlaufende Gießmasse im Formsand der Gießform eingeformt ist, wobei unmittelbar nach beendeter Füllung der Gießform der Steigkanal im Bereich des Formsandes unterbrochen und damit so verschlossen wird, dass die Gießform von dem Gießbehälter abtrennbar ist.The invention relates to a method for pouring a mold having a mold box from below in increasing casting with a casting from a casting container through a riser channel, which is formed for the inflow of rising from below into the mold casting compound in the molding sand of the mold, wherein immediately interrupted after completion of the filling of the mold, the riser channel in the region of the molding sand and thus closed so that the mold is separable from the casting container.

Aus der WO 95/32826 ist ein Verfahren bekannt, bei dem ein Stempel auf die Außenfläche der Form aufgesetzt wird und den Formsand in den Eingießkanal drückt und diesen verschließt. Die Angriffsfläche für den Stempel, der auf den Sand aufdrückt, wurde so geformt, dass der Stempel in etwa senkrecht zum Eingießkanal verschoben wird. Der Nachteil dieser bekannten Art des Verschließens des Eingießkanales besteht darin, dass der Formsand an beliebigen Stellen einreißt, so dass ein sicherer Verschlüss des Eingießkanales nicht in jedem Fall gewährleistet ist.From WO 95/32826 a method is known in which a stamp is placed on the outer surface of the mold and presses the molding sand into the pouring channel and closes it. The contact surface for the stamp, which presses on the sand, has been shaped so that the punch is moved approximately perpendicular to the pouring channel. The disadvantage of this known type of closing of the Eingießkanales is that the molding sand tears at arbitrary locations, so that a secure Verschlüsske the Eingießkanales is not guaranteed in each case.

Der Erfindung liegt die Aufgabe zugrunde, die Anwendung der bekannten Verschließtechnik beim Abgießen einer einen Formkasten aufweisenden Gießform von unten in steigendem Guß mit einer Gießmasse aus einem Gießbehälter durch einen Steigkanal zu ermöglichen.The invention has for its object to enable the application of the known Verschließtechnik when casting a mold box having a mold from below in increasing casting with a casting material from a casting container through a riser.

Diese Aufgabe wird den Merkmalen des Anspruches 1 gelöst.This object is achieved by the features of claim 1.

Durch den in dem Formsand eingeformten, bis in die Nähe des Steigkanals reichenden Stempelkanal, der quer zu der Achse des Steigkanals orientiert ist, kann der Steigkanal sicher abgesperrt werden, weil ein definierter Formsandbereich durch den Stempel in den Steigkanal eingeschoben wird. Vorteilhaft ist in dem Stempelkanal ein Pfropfen angeordnet, der sicherstellt, dass der Stempelkanal auch nach dem Verschließen des Steigkanals verschlossen bleibt.By shaped in the molding sand, reaching into the vicinity of the riser punch channel, which is oriented transversely to the axis of the riser, the riser can be securely shut off because a defined molding sand area is inserted through the punch in the riser. Advantageously, a plug is arranged in the punch channel, which ensures that the punch channel remains closed even after the closing of the riser.

So wird durch eine quer zur Achse des Steigkanals ausgeübte, den Formsand verschiebende und/oder verdichtende Stempelkraft mindestens eines vorzugsweise hydraulisch betätigten Druckstempels der Steigkanal eingeschnürt, wodurch durch Verschieben und/oder Verdichten des Formsandes der Steigkanal geschlossen wird. Unmittelbar, nachdem die Strömung in dem Steigkanal unterbrochen ist, wird der Förderdruck auf die Oberfläche der Gießmasse abgestellt, so dass der gewünschte fortlaufende. Arbeitsprozess erreicht ist, weil die Gießform nun sofort ersetzt werden kann.Thus, by a force exerted transversely to the axis of the riser, the molding sand and / or compressing punching force of at least one preferably hydraulically actuated plunger of the riser channel constricted, which is closed by moving and / or compressing the molding sand of the riser. Immediately, after the flow in the riser is interrupted, the discharge pressure is placed on the surface of the casting, so that the desired continuous. Working process is achieved because the mold can now be replaced immediately.

Eine besonders vorteilhafte Ausgestaltung der Erfindung erfährt das Gießverfahren, wenn die in dem Gießbehälter vorrätige Gießmasse auf ihrer Oberfläche einem pneumatischen Förderdruck ausgesetzt ist und die Gießmasse durch mindestens ein in die Gießmasse eintauchendes, senkrechtes Steigrohr und durch den mit dem Steigrohr fluchtenden und mit diesem eine gemeinsame Steigleitung für die Einströmung der Gießmasse bildenden Steigkanal in die oberhalb des Steigrohres befindliche Gießform gedrückt wird. Die gesamte Steigleitung verläuft hierbei senkrecht und ist im Bereich des Steigkanals einer in der Gießform vorgenommenen Einschnürung zugänglich.A particularly advantageous embodiment of the invention undergoes the casting process when the casting material in the casting container is exposed on its surface to a pneumatic delivery pressure and the casting material by at least one immersed in the casting compound, vertical riser and by the aligned with the riser and with this a common Riser is pressed for the inflow of the casting material forming riser into the mold located above the riser. The entire riser extends perpendicularly and is accessible in the region of the riser channel of a constriction made in the casting mold.

Die Erfindung wird nachstehend anhand der Zeichnung an einem Ausführungsbeispiel näher erläutert. Es zeigen:

Fig. 1
einen Längsschnitt durch eine für das erfindungsgemäße Verfahren geeignete Gießanordnung mit stehend abgegossener Gießform vor dem Abguss,
Fig. 2
die Anordnung der Fig. 1 unmittelbar nach dem Abguss und dem Verschließen des Steigkanals,
Fig. 3
eine Gießanordnung wie in Fig. 1 und 2 mit einer etwas veränderten Gießform und
Fig. 4
eine Gießanordnung wie in Fig. 3 mit einem speziellen Verschlussteil für den Steigkanal der Gießform,
sämtlich in schematisch vereinfachter Darstellung.The invention will be explained in more detail below with reference to the drawing of an embodiment. Show it:
Fig. 1
3 a longitudinal section through a casting arrangement suitable for the method according to the invention with a standing cast-off casting mold before the casting,
Fig. 2
the arrangement of Figure 1 immediately after the casting and the closing of the riser,
Fig. 3
a casting arrangement as shown in FIGS. 1 and 2 with a slightly different mold and
Fig. 4
a casting arrangement as in FIG. 3 with a special closure part for the riser channel of the casting mold,
all in a schematically simplified representation.

Eine Gießform 1, 2 nach der Erfindung besteht aus zwei senkrecht geteilten Formhälften 1 und 2 mit einem von Formsand umschlossenen Formhohlraum 3, in den ein mittiger, senkrecht nach unten gerichteter, in den Formsand eingeformter Steigkanal 4 mündet; der Steigkanal 4 mit einem am besten kreisförmigen Querschnitt endet andererseits an der freien Stirnseite 10 eines ebenfalls senkrecht ausgeführten Steigrohres 8, das mit dem Steigkanal 4 fluchtet und mit diesem eine für eine Gießmasse 7 durchlässige Steigleitung 4, 8 so lange bildet, wie die Gießform 1, 2 auf einen Gießbehälter 5, 6 aufgesetzt ist. Der Gießbehälter 5, 6 setzt sich aus einem Tiegel 6 und einem auf den Tiegel 6 aufgesetzten Kopfstück 5 zusammen, das den Tiegel 6 dicht verschließt und außer dem mittig angeordneten Steigrohr 8 noch einen Rohrstutzen 9 aufweist, die beide oberhalb der Oberfläche 11 der in dem Tiegel 6 befindlichen flüssigen Gießmasse 7 enden.A mold 1, 2 according to the invention consists of two vertically divided mold halves 1 and 2 with a molding sand enclosed mold cavity 3, in which a central, directed vertically downwards, formed in the molding sand riser 4 opens; the riser channel 4 with a best circular cross-section ends on the other hand at the free end face 10 of a likewise vertically running riser 8, which is aligned with the riser channel 4 and forms with it a permeable for a casting compound 7 riser 4, 8 as long as the mold. 1 , 2 is placed on a casting container 5, 6. The casting container 5, 6 is composed of a crucible 6 and a patch on the crucible 6 head piece 5, which closes the crucible 6 tight and except the centrally arranged riser 8 still has a pipe socket 9, both above the surface 11 of the in the Crucible 6 located liquid casting 7 end.

Während durch das Steigrohr 8 die Gießmasse 7 in den Formhohlraum 3 gedrückt wird, wenn die Gießform 1, 2 auf den Gießbehälter 5, 6 aufgesetzt, die Steigleitung 4, 8 ausgebildet und die Oberfläche 11 einem pneumatischen Förderdruck p ausgesetzt ist, dient der Rohrstutzen 9 zur Strömungsverbindung des Gießbehälters 5, 6 mit einer Druckluftquelle.While the casting material 7 is pressed into the mold cavity 3 through the riser 8, when the casting mold 1, 2 is placed on the casting container 5, 6, the riser 4, 8 formed and the surface 11 is exposed to a pneumatic delivery pressure p, the pipe socket serves. 9 for the flow connection of the casting container 5, 6 with a compressed air source.

In Höhe des Steigkanals 4 und quer zu dessen Verlauf gerichtet ist ein hydraulischer Kolbenmotor 12 installiert, dessen Druckstempel 13 in einer auf der Achse des Steigkanals 4 senkrechten Richtung 14 in die Gießform 1, 2 verfahrbar ist und dabei einen Stempeldruck auf den darin befindlichen Formsand ausübt.Directed at the level of the riser 4 and transverse to its course, a hydraulic piston motor 12 is installed, the plunger 13 in a direction perpendicular to the axis of the riser channel 4 in the direction 14 Casting mold 1, 2 is movable and thereby exerts a stamping pressure on the molding sand therein.

Bei der Anordnung der Fig. 1 und 2 übt der Druckstempel 13 seine Stempelkraft unmittelbar auf den die Gießform 1, 2 vollständig ausfüllenden und lediglich den Formhohlraum 3 und den Steigkanal 4 freilassenden Formsand auf, wobei der Druckstempel 13 (Fig. 2) nach dem Abguss so weit in die Gießform 1, 2 eingefahren wird, bis der Steigkanal 4 durch verdichteten und in seinen Querschnitt gedrückten Formsand unterbrochen ist und so ein Rückfluss der bereits in den Formhohlraum 3 eingefüllten Gießmasse 7 verhindert wird. Es versteht sich, dass ein weiterer, dem ersten diametral entgegengerichteter Druckstempel vorgesehen sein kann, um auf der gegenüberliegenden Seite der Gießform 1, 2 den Formsand ebenfalls entsprechend zu belasten und auf diese Weise den Steigkanal 4 von zwei Seiten einschnüren zu können.In the arrangement of FIGS. 1 and 2, the plunger 13 exerts its stamping force directly on the mold sand 1, 2 completely filling and only the mold cavity 3 and the riser channel 4 free molding sand, wherein the plunger 13 (Fig. 2) after the casting so far into the mold 1, 2 is retracted until the riser channel 4 is interrupted by compacted and pressed in its cross section molding sand and so a backflow of the filled already in the mold cavity 3 molding compound 7 is prevented. It is understood that a further, the first diametrically opposed plunger can be provided to also charge on the opposite side of the mold 1, 2 the molding sand accordingly and in this way to be able to constrict the riser 4 from two sides.

Im Gegensatz dazu ist in den Ausführungen der Fig. 3 bis 6 ein Stempelkanal 15 bzw. 16 in die Gießform 1, 2 eingeformt, der in Richtung 14 und in seinem Querschnitt dem Druckstempel 13 angepasst ist und bis zu dem Steigkanal 4 (Fig. 3, 4) oder darüber hinaus (Fig. 5, 6) reicht.In contrast, in the embodiments of FIGS. 3 to 6, a punch channel 15 or 16 is formed in the casting mold 1, 2, which is adapted in the direction 14 and in its cross section to the plunger 13 and up to the riser channel 4 (FIG 4) or beyond (FIGS. 5, 6).

Während entsprechend Fig. 3 der Stempelkanal 15 allein dazu dienen kann, die Arbeit des Druckstempels 13 zu erleichtern, ist in der Anordnung der Fig. 4 ein Pfropfen 17 in einen dazu passenden Stempelkanal 16 eingelegt, der von dem Druckstempel 13 bis zum Verschluss des Steigkanals 4 verschiebbar ist. Eine solche Ausführung ist besonders dann vorteilhaft, wenn der Formsand chemisch gebunden ist und dem Druckstempel 13 entsprechend höhen Widerstand entgegensetzt, wenn dieser in den Formsand eingefahren wird.While according to Fig. 3, the punch channel 15 alone can serve to facilitate the work of the plunger 13, in the arrangement of Fig. 4, a plug 17 is inserted into a mating punch channel 16, from the plunger 13 to the closure of the riser 4 is displaceable. Such a design is particularly advantageous when the molding sand is chemically bonded and the pressure ram 13 correspondingly high resistance opposes when it is retracted into the molding sand.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Formhälftemold
22
Formhälftemold
1, 21, 2
Gießformmold
33
Formhohlraummold cavity
44
Steigkanalrising channel
55
Kopfstückheadpiece
66
Tiegelcrucible
5, 65, 6
Gießbehältergooseneck
77
Gießmassecasting
88th
Steigrohrriser
4, 84, 8
Steigleitungriser
99
Rohrstutzenpipe socket
1010
Stirnseitefront
1111
Oberflächesurface
1212
Kolbenmotorpiston engine
1313
Druckstempelplunger
1414
Richtungdirection
1515
Stempelkanalplunger passage
1616
Stempelkanalplunger passage
1717
PfropfenGraft

Claims (6)

  1. A process for countergravity casting from below of a casting mould (1, 2) having a casting box with a molten material (7) from a casting vessel (5, 6) through a vertical channel (4) that is formed in the forming sand of the casting mould (1, 2) to enable the molten material (7) rising from below to flow into the casting mould (1, 2), wherein the vertical channel (4) is closed off in the region of the forming sand immediately after the casting mould (1, 2) has been filled, and is thus isolated in such manner that the casting mould (1, 2) is able to be detached from the casting vessel, wherein an outwardly open plunger channel (15) whose alignment (14) and cross section is adapted to the shape of a plunger (13) to accommodate the plunger (13), is formed in the forming sand of the casting mould (1, 2), extends as far as a point close to the vertical channel (4) and is aligned transversely to the axis of the vertical channel, wherein the vertical channel (4) is closed off by the forming sand being displaced into the vertical channel (4) by the plunger (13).
  2. The process as recited in claim 1,
    characterised in that
    the surface of the molten material (7) stored in the casting vessel (5, 6) is subjected to a pneumatic displacement pressure (p) and the molten material (7) is forced into the casting mould (1, 2) positioned above the vertical pipe (9) through at least one riser (8) that is vertically submerged in the molten material (7) and through the vertical channel (4) that abuts the riser (8) and forms a common rising duct (4, 8) therewith for the flow of the molten material (7).
  3. The process as recited in either of claims 1 or 2,
    characterised in that
    the displacement pressure (p) on the surface (11) of the molten material (7) is removed immediately after the flow in the vertical channel (4) is interrupted.
  4. A casting mould for carrying out a process as recited in any of claims 1 to 3, including a casting box and a casting cavity created in the forming sand therein to receive the molten material,
    characterised in that
    an outwardly open plunger channel (15) whose alignment (14) and cross section is adapted to the shape of a plunger (13) to accommodate the plunger (13), is formed in the forming sand of the casting mould, extends as far as a point close to the vertical channel (4) and is aligned transversely to the axis of the vertical channel.
  5. The casting mould as recited in claim 4,
    characterised in that
    a plug (17) is provided in the plunger channel (16) and can be pressed into the vertical channel (4), thereby closing it off.
  6. The casting mould as recited in either of claims 4 or 5,
    characterised in that
    the vertical channel (4) is arranged parallel to the plane of the moulding element.
EP98104851A 1997-08-01 1998-03-18 Process for shape casting and mould therefore Expired - Lifetime EP0894557B2 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19733485A DE19733485A1 (en) 1997-08-01 1997-08-01 Mold casting method and mold for such a method
DE19733485 1997-08-01
CZ19984016A CZ9804016A3 (en) 1997-08-01 1998-12-07 Mold casting process and casting mold for making the same
US09/217,709 US6305460B1 (en) 1997-08-01 1998-12-21 Method for casting
JP10374685A JP2000197960A (en) 1997-08-01 1998-12-28 Casting method and mold for this method

Publications (3)

Publication Number Publication Date
EP0894557A1 EP0894557A1 (en) 1999-02-03
EP0894557B1 EP0894557B1 (en) 2002-04-24
EP0894557B2 true EP0894557B2 (en) 2006-09-06

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Application Number Title Priority Date Filing Date
EP98104851A Expired - Lifetime EP0894557B2 (en) 1997-08-01 1998-03-18 Process for shape casting and mould therefore

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US (1) US6305460B1 (en)
EP (1) EP0894557B2 (en)
JP (1) JP2000197960A (en)
AT (1) ATE216642T1 (en)
CZ (1) CZ9804016A3 (en)
DE (2) DE19733485A1 (en)
ES (1) ES2173522T5 (en)
PL (1) PL327479A1 (en)

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DE19953402A1 (en) * 1999-11-06 2001-05-10 Wagner Heinrich Sinto Masch Method and device for producing and casting a casting mold consisting of two mold halves
DE102009039595B4 (en) * 2009-09-01 2020-10-15 Daimler Ag Low pressure casting device
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JP2000197960A (en) 2000-07-18
ES2173522T5 (en) 2007-05-01
CZ9804016A3 (en) 2001-08-15
DE19733485A1 (en) 1999-02-04
PL327479A1 (en) 1999-02-15
ATE216642T1 (en) 2002-05-15
EP0894557B1 (en) 2002-04-24
EP0894557A1 (en) 1999-02-03
ES2173522T3 (en) 2002-10-16
DE59803900D1 (en) 2002-05-29
US6305460B1 (en) 2001-10-23

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