EP1214998B1 - Moulding die for light alloy die casting apparatus - Google Patents

Moulding die for light alloy die casting apparatus Download PDF

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Publication number
EP1214998B1
EP1214998B1 EP01126257A EP01126257A EP1214998B1 EP 1214998 B1 EP1214998 B1 EP 1214998B1 EP 01126257 A EP01126257 A EP 01126257A EP 01126257 A EP01126257 A EP 01126257A EP 1214998 B1 EP1214998 B1 EP 1214998B1
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EP
European Patent Office
Prior art keywords
iron
casting
tungsten
contour
mould
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EP01126257A
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German (de)
French (fr)
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EP1214998A2 (en
EP1214998A3 (en
Inventor
Gerhard Wurst
Ulrich Riethmüller
Johann Wolf
Alfred Unterreitmaier
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/2209—Selection of die materials

Definitions

  • the invention relates according to the preamble of claim 1 to a Casting mold for light metal casting machine made of tungsten powder metallurgy and / or molybdenum with the addition of lower melting metals is trained.
  • Japanese Patent Laid-Open Publication No. 05000354 discloses an injection mold in which the mold halves each consist of a tungsten sintered metal body are formed with a tungsten content of 85 - 98% and a respective proportion of molybdenum and iron of 1-5% by weight each.%.
  • DE 40 40 032 A1 discloses a method for producing a stuffing box for die-casting machines, wherein in the stuffing box a through Hot isostatic pressing formed overlay of a tungsten sintered metal is generated.
  • This substantially resistant to aluminum melt Tungsten sintered metal support comprises molybdenum as a further sintering partner, wherein the tungsten and molybdenum particles alloy during sintering by means of pure iron are.
  • a casting mold for a light metal die-casting machine as described in the introduction, entirely preferably of a tungsten and / or molybdenum sintered metal form, is disadvantageously costly and with large molds with connected to a considerable weight for the die-casting machine.
  • the invention has for its object, a generic mold in terms To further develop costs and weight.
  • the production costs of a casting mold are essential with the invention lowered and further the weight of the mold is significantly reduced.
  • the invention proposes that the contouring part in a destructible Mold trough is placed for transfusion with the iron material.
  • the for example, made of fireclay mold pan is shaping the machine side Part of the mold designed.
  • the contouring part is in one piece educated. This is especially true for a multi-part mold with each mold proportionate contouring part.
  • the contouring part can also be formed in several pieces, wherein in a multi-piece training several pre-sintered sections by Fertigigsintern be connected to a part.
  • this part in a further embodiment proposed the invention that this part in a separate, with a half or proportionate cast model equipped pan by filling of a tungsten and / or molybdenum powder with the addition of iron pieces and then sintered.
  • the contouring produced in this way Part is finally by co-molding with a cohesive with this part joining iron material to form a mold.
  • a one-piece contouring part in a separate, equipped with a half or proportionate casting model Container by filling a tungsten and / or molybdenum powder with addition produced by iron and subsequent hot isostatic pressing.
  • This too contouring part produced in the aforementioned manner is by Umge manen further developed with a ferrous material to a one-piece mold.
  • a casting mold 1 for a multi-part casting tool of a light metal casting machine is used to reduce manufacturing costs and to reduce weight formed so that the casting contouring region 2 of the mold 1 as a separate part 3 with a self-rigid wall 4 by sintering or hot isostatic Pressing a tungsten and / or molybdenum powder with admixture produced by iron.
  • this is produced by powder metallurgy separate part 3 with a machine-side part 5 of the mold 1 by Circumferential casting of the contour-giving part 3 with one with this part 3 cohesively connecting iron material 6 combined to the mold 1.
  • the material cost for a tungsten sintered metal is or a molybdenum sintered material or a tungsten and molybdenum sintered material reduced to a minimum and handling for recasting with Ferrous material 6 in the destructible mold pan 7 by a one-piece Training advantageously supported.
  • contouring part 3 For a contouring part 3 to form a casting with flat surfaces the contouring part 3 may be formed in several pieces, with several pre-sintered Sections 9, 10, 10 'and 11, 11' by finished sintering into a single Part 3 are connected. By molding this contouring part with a with this cohesively connecting iron material 6 is in turn the Machine-side part 5 of the mold 1 is formed, Figure 2.
  • a one-piece contouring part 3 powder metallurgy also be prepared by having one in a separate, one half Cast model - 12 core - equipped pan 13 filled tungsten and / or Molybdenum powder sintered with admixtures of iron powder and / or pieces of iron becomes.
  • a one-piece contouring part 3 in a separate, equipped with a half-cast model 12, pressure-resistant container 13 'by filling a tungsten and / or molybdenum powder with addition produced by iron and subsequent hot isostatic pressing.
  • the powder-metallurgically produced part 15 according to FIG. 4 can also proceed as follows be that in a machine-side made of ferrous material Part 5 of the mold 1 'a dimensionally enlarged contouring area 14 is formed on which a by hot isostatic pressing a tungsten and / or Molybdenum powder with Eisen mecanicengung separately generated part 15 cohesively is arranged.
  • a tungsten and / or Molybdenum powder with Eisenitherengung separately generated part 15 cohesively cohesively is arranged.
  • the contouring area 14 As a preparatory action is the contouring area 14 the machine-side part 5 spaced apart a cover 16 associated with Part 5 is firmly connected.
  • the cavity 17 between the cover 16 and the machine side part 5 is mixed with a mixed with iron powder tungsten and / or molybdenum powder filled, provided for this purpose opening 18 sealed and evacuated at 19.
  • the cover 16 is removed and the Mold 1 'arranged in the present form in a die-casting machine.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Abstract

Casting mold (1) has a casting contouring region (2) formed as a special part (3) with a wall (4) and produced by sintering or hot isostatic pressing. The part of the mold on the machine side is formed by casting around the casting contouring region with an iron material. Preferably the casting contouring region is placed in a consumable molding bath for casting with iron. The casting contouring region is formed as one piece or from multiple pieces.

Description

Die Erfindung bezieht sich nach dem Oberbegriff des Patentanspruches 1 auf eine Gießform für Leichtmetall-Gießmaschine, die pulvermetallurgisch aus Wolfram und/oder Molybdän unter Beimengung von niedriger schmelzenden Metallen ausgebildet wird.The invention relates according to the preamble of claim 1 to a Casting mold for light metal casting machine made of tungsten powder metallurgy and / or molybdenum with the addition of lower melting metals is trained.

Aus der DE-PS618 870 ist für Aluminiumspritzguss eine Spritzgussform bekannt, die durch Sintern von gepulvertem Wolfram oder Molybdän unter Zusatz von niedrigerer schmelzenden gepulverten Metallen, wie z.B. Eisen, hergestellt wird.From DE-PS 618 870 an injection mold is known for aluminum injection molding, by sintering of powdered tungsten or molybdenum with the addition of lower melting powdered metals, e.g. Iron, is produced.

Weiter ist aus der japanischen Patent-Offenlegungsschrift 05000354 eine Spritzgussform bekannt, bei der die Gießform-Hälften jeweils aus einem Wolfram-Sintermetallkörper gebildet sind mit einem Wolfram-Anteil von 85 - 98 % sowie einem jeweiligen Anteil an Molybdän und Eisen von jeweils 1 - 5 %-Gew.%.Further, Japanese Patent Laid-Open Publication No. 05000354 discloses an injection mold in which the mold halves each consist of a tungsten sintered metal body are formed with a tungsten content of 85 - 98% and a respective proportion of molybdenum and iron of 1-5% by weight each.%.

Schließlich ist aus der DE 40 40 032 A1 ein Verfahren zur Herstellung einer Füllbüchse für Druckgussmaschinen bekannt, wobei in der Füllbüchse eine durch heißisostatisches Pressen ausgebildete Auflage aus einem Wolfram-Sintermetall erzeugt ist. Diese gegen Aluminium-Schmelze im wesentlichen widerstandsfähige Auflage aus Wolfram-Sintermetall umfasst als weiteren Sinterpartner Molybdän, wobei die Wolfram- und Molybdän-Partikel beim Sintern mittels reinem Eisen legiert sind. Finally, from DE 40 40 032 A1 discloses a method for producing a stuffing box for die-casting machines, wherein in the stuffing box a through Hot isostatic pressing formed overlay of a tungsten sintered metal is generated. This substantially resistant to aluminum melt Tungsten sintered metal support comprises molybdenum as a further sintering partner, wherein the tungsten and molybdenum particles alloy during sintering by means of pure iron are.

Eine Gießform für eine Leichtmetall-Druckgussmaschine, wie eingangs beschrieben, zur Gänze vorzugsweise aus einem Wolfram- und/oder Molybdän-Sintermetall auszubilden, ist in nachteiliger Weise kostenintensiv und bei großen Gießformen mit einem erheblichen Gewicht für die Druckgussmaschine verbunden.A casting mold for a light metal die-casting machine, as described in the introduction, entirely preferably of a tungsten and / or molybdenum sintered metal form, is disadvantageously costly and with large molds with connected to a considerable weight for the die-casting machine.

Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Gießform hinsichtlich Kosten und Gewicht vorteilhaft weiterzubilden.The invention has for its object, a generic mold in terms To further develop costs and weight.

Diese Aufgabe ist mit dem Patentanspruch 1 dadurch gelöst, dass der gusskonturgebende Bereich der Gießform als ein gesondertes Teil mit einer eigensteifen Wandung durch Sintern oder heißisostatisches Pressen erzeugt wird, und dass der maschinenseitige Teil der Gießform durch Umgießen des konturgebenden Teils mit einem mit diesem Teil sich stoffschlüssig verbindenden Eisenwerkstoff ausgebildet wird.This object is achieved with the patent claim 1, characterized in that the casting contouring Area of the mold as a separate part with a self-rigid wall is produced by sintering or hot isostatic pressing, and that the machine side Part of the mold by pouring the contouring part with formed with this part cohesively connecting iron material becomes.

Mit der Erfindung sind in vorteilhafter Weise die Herstellkosten einer Gießform wesentlich gesenkt und ferner ist das Gewicht der Gießform deutlich reduziert.Advantageously, the production costs of a casting mold are essential with the invention lowered and further the weight of the mold is significantly reduced.

Für die bleibende Kombination der beiden vorgenannten Teile wird in weiterer Ausgestaltung der Erfindung vorgeschlagen, dass das konturgebende Teil in einer zerstörbaren Formwanne für das Umgießen mit dem Eisenwerkstoff platziert wird. Die beispielsweise aus Schamotte hergestellte Formwanne ist formgebend für den maschinenseitigen Teil der Gießform gestaltet.For the permanent combination of the two aforementioned parts is in a further embodiment The invention proposes that the contouring part in a destructible Mold trough is placed for transfusion with the iron material. The For example, made of fireclay mold pan is shaping the machine side Part of the mold designed.

In weiterer Ausgestaltung der Erfindung wird das konturgebende Teil einstückig ausgebildet. Dies gilt insbesondere für eine mehrteilige Gießform mit je Gießform anteiligem konturgebendem Teil.In a further embodiment of the invention, the contouring part is in one piece educated. This is especially true for a multi-part mold with each mold proportionate contouring part.

Weiter kann das konturgebende Teil auch mehrstückig ausgebildet werden, wobei bei einer mehrstückigen Ausbildung mehrere vorgesinterte Abschnitte durch Fertigsintern zu einem Teil verbunden werden. Next, the contouring part can also be formed in several pieces, wherein in a multi-piece training several pre-sintered sections by Fertigigsintern be connected to a part.

Für die Herstellung eines einstückigen konturgebenden Teiles wird in weiterer Ausgestaltung der Erfindung vorgeschlagen, dass dieses Teil in einer gesonderten, mit einem hälftigen bzw. anteiligen Gussmodell ausgerüsteten Wanne durch Einfüllen eines Wolfram- und/oder Molybdän-Pulvers unter Beimengung von Eisenstücken und anschließendem Sintern erzeugt wird. Das auf diese Weise hergestellte konturgebende Teil wird schließlich durch Umgießen mit einem mit diesem Teil sich stoffschlüssig verbindenden Eisenwerkstoff zu einer Gießform ergänzt.For the production of a one-piece contouring part is in a further embodiment proposed the invention that this part in a separate, with a half or proportionate cast model equipped pan by filling of a tungsten and / or molybdenum powder with the addition of iron pieces and then sintered. The contouring produced in this way Part is finally by co-molding with a cohesive with this part joining iron material to form a mold.

Gemäß einem weiteren Vorschlag wird ein einstückiges konturgebendes Teil in einem gesonderten, mit einem hälftigen bzw. anteiligen Gussmodell ausgerüsteten Behältnis durch Einfüllen eines Wolfram und/oder Molybdän-Pulvers unter Beigabe von Eisen und anschließendem heißisostatischem Pressen erzeugt. Auch dieses auf die vorgenannte Weise hergestellte konturgebende Teil wird durch Umgießen mit einem Eisenwerkstoff zu einer einteiligen Gießform weitergebildet.According to another proposal, a one-piece contouring part in a separate, equipped with a half or proportionate casting model Container by filling a tungsten and / or molybdenum powder with addition produced by iron and subsequent hot isostatic pressing. This too contouring part produced in the aforementioned manner is by Umgeießen further developed with a ferrous material to a one-piece mold.

Schließlich wird gemäß dem unabhängigen Anspruch 6 eine gattugnsgemäße Gießform dadurch weitergebildet, dass in einem aus Eisenwerkstoff erzeugten maschinenseitigen Teil der Gießform ein maßlich vergrößerter konturgebender Bereich ausgebildet wird, auf dem ein durch heißisostatisches Pressen eines Wolfram- und/oder Molybdän-Pulvers mit Eisenbeimengung gesondert erzeugtes Teil stoffschlüssig angeordnet wird.Finally, according to the independent claim 6 a gattugnsgemäße mold thereby further developed that in a machine-side part made of ferrous material the mold is formed a dimensionally enlarged contouring area, on the one by hot isostatic pressing a tungsten and / or molybdenum powder with Eisenbeimengung separately generated part cohesively arranged becomes.

Die Erfindung ist anhand von in der Zeichnung schematisch dargestellten Ausführungsbeispielen beschrieben. Es zeigt

Figur 1
eine kombinierte Gießform mit einem konturgebenden, pulvermetallurgisch erzeugten Teil,
Figur 2
eine Gießform mit einem mehrteilig ausgebildeten gesonderten, pulvermetallurgisch erzeugten Teil,
Figur 3
eine Herstellung eines gesonderten, pulvermetallurgisch erzeugten, gusskonturgebenden Teils und
Figur 4
ein durch heißisostatisches Pressen erzeugtes, konturgebendes Teil auf einer Gießform.
The invention is described with reference to embodiments schematically illustrated in the drawing. It shows
FIG. 1
a combined casting mold with a contouring, powder-metallurgically generated part,
FIG. 2
a casting mold with a multipartite separate, powder-metallurgically produced part,
FIG. 3
a preparation of a separate, powder metallurgically produced, casting contour part and
FIG. 4
a contouring part produced by hot isostatic pressing on a casting mold.

Eine Gießform 1 für ein mehrteiliges Gießwerkzeug einer nicht gezeigten Leichtmetall-Gießmaschine wird zur Senkung der Herstellkosten und zur Gewichtsreduzierung so ausgebildet, dass der gusskonturgebende Bereich 2 der Gießform 1 als gesondertes Teil 3 mit einer eigensteifen Wandung 4 durch Sintern oder heißisostatisches Pressen eines Wolfram- und/oder Molybdän-Pulvers unter Beimengung von Eisen erzeugt wird. Im weiteren wird dieser pulvermetallurgisch erzeugte gesonderte Teil 3 mit einem maschinenseitigen Teil 5 der Gießform 1 durch Umgießen des konturgebenden Teiles 3 mit einem mit diesem Teil 3 sich stoffschlüssig verbindenden Eisenwerkstoff 6 kombiniert zu der Gießform 1. Wie aus Figur 1 ersichtlich, wird das konturgebende, pulvermetallurgisch hergestellte Teil 3 in einer zerstörbaren, z.B. aus Schamotte gebildeten Formwanne 7 mittels einer Abstützung 8 für das Umgießen mit dem Eisenwerkstoff 6 platziert. Nach Erkalten des Eisenwerkstoffes 6 wird die Formwanne 7 zerstört und die kombinierte Gießform 1 für die Anordnung in einer nicht gezeigten Leichtmetall-Druckgussmaschine weiter bearbeitet. Im übrigen kann das Teil 3 auch auf dem Boden der Formwanne 7 platziert sein.A casting mold 1 for a multi-part casting tool of a light metal casting machine, not shown is used to reduce manufacturing costs and to reduce weight formed so that the casting contouring region 2 of the mold 1 as a separate part 3 with a self-rigid wall 4 by sintering or hot isostatic Pressing a tungsten and / or molybdenum powder with admixture produced by iron. In addition, this is produced by powder metallurgy separate part 3 with a machine-side part 5 of the mold 1 by Circumferential casting of the contour-giving part 3 with one with this part 3 cohesively connecting iron material 6 combined to the mold 1. Like out Figure 1 can be seen, the contouring, powder metallurgy produced part 3rd in a destructible, e.g. formed from chamotte mold trough 7 by means of a Support 8 is placed for transfusion with the iron material 6. After cooling down of the iron material 6, the mold pan 7 is destroyed and the combined mold 1 for the arrangement in a light metal die-casting machine, not shown further edited. Moreover, the part 3 also on the bottom of the mold pan. 7 be placed.

Wie aus Figur 1 weiter ersichtlich, ist der Materialaufwand für ein Wolfram-Sintermetall oder ein Molybdän-Sintermaterial oder ein Wolfram- und Molybdän-Sintermaterial auf ein Minimum reduziert und die Handhabung für das Umgießen mit Eisenwerkstoff 6 in der zerstörbaren Formwanne 7 durch eine einstückige Ausbildung vorteilhaft unterstützt.As can also be seen from FIG. 1, the material cost for a tungsten sintered metal is or a molybdenum sintered material or a tungsten and molybdenum sintered material reduced to a minimum and handling for recasting with Ferrous material 6 in the destructible mold pan 7 by a one-piece Training advantageously supported.

Für ein konturgebendes Teil 3 zur Ausbildung eines Gussteiles mit ebenen Flächen kann das konturgebende Teil 3 mehrstückig ausgebildet sein, wobei mehrere vorgesinterte Abschnitte 9, 10, 10' und 11, 11' durch Fertigsintern zu einem einzigen Teil 3 verbunden werden. Durch Umgießen dieses konturgebenden Teils mit einem mit diesem sich stoffschlüssig verbindenden Eisenwerkstoff 6 wird wiederum der maschinenseitige Teil 5 der Gießform 1 ausgebildet, Figur 2. For a contouring part 3 to form a casting with flat surfaces the contouring part 3 may be formed in several pieces, with several pre-sintered Sections 9, 10, 10 'and 11, 11' by finished sintering into a single Part 3 are connected. By molding this contouring part with a with this cohesively connecting iron material 6 is in turn the Machine-side part 5 of the mold 1 is formed, Figure 2.

Gemäß Figur 3 kann ein einstückiges konturgebendes Teil 3 pulvermetallurgisch auch dadurch hergestellt werden, dass ein in einer gesonderten, mit einem hälftigen Gussmodell - Kern 12 - ausgerüsteten Wanne 13 eingefülltes Wolfram- und/oder Molybdän-Pulver mit Beimengungen von Eisenpulver und/oder Eisenstücken gesintert wird.According to Figure 3, a one-piece contouring part 3 powder metallurgy also be prepared by having one in a separate, one half Cast model - 12 core - equipped pan 13 filled tungsten and / or Molybdenum powder sintered with admixtures of iron powder and / or pieces of iron becomes.

In Anlehnung an die Figur 3 wird ein einstückiges konturgebendes Teil 3 in einem gesonderten, mit einem hälftigen Gussmodell 12 ausgerüsteten, druckfesten Behältnis 13' durch Einfüllen eines Wolfram- und/oder Molybdän-Pulvers unter Beigabe von Eisen und anschließendem heißisostatischen Pressen erzeugt.Based on the figure 3 is a one-piece contouring part 3 in a separate, equipped with a half-cast model 12, pressure-resistant container 13 'by filling a tungsten and / or molybdenum powder with addition produced by iron and subsequent hot isostatic pressing.

Bezüglich des heißisostatischen Pressens zur Herstellung eines konturgebenden, pulvermetallurgisch hergestellten Teils 15 gemäß Figur 4 kann auch so vorgegangen werden, dass in einem aus Eisenwerkstoff erzeugten maschinenseitigen Teil 5 der Gießform 1' ein maßlich vergrößerter konturgebender Bereich 14 ausgebildet wird, auf dem ein durch heißisostatisches Pressen eines Wolfram- und/oder Molybdän-Pulvers mit Eisenbeimengung gesondert erzeugtes Teil 15 stoffschlüssig angeordnet wird. Als vorbereitende Handlung wird dem konturgebenden Bereich 14 des maschinenseitigen Teils 5 beabstandet eine Abdeckung 16 zugeordnet, die mit dem Teil 5 fest verbunden ist. Der Hohlraum 17 zwischen der Abdeckung 16 und dem maschinenseitigen Teil 5 wird mit einem mit Eisenpulver vermischten Wolfram- und/oder Molybdän-Pulver aufgefüllt, die hierfür vorgesehene Öffnung 18 dicht verschlossen und bei 19 evakuiert. Anschließend wird das gesondert erzeugt Teil 15 durch heißisostatisches Pressen bei vorgegebener Temperatur und konstantem Druck über eine vorbestimmte Zeit mit dem maschinenseitigen Teil 5 stoffschlüssig verbunden bei gleichzeitiger Sinterung des jeweiligen Metallpulvers. Nach Abschluss des heißisostatischen Pressens wird die Abdeckung 16 entfernt und die Gießform 1' in der vorliegenden Form in einer Druckgussmaschine angeordnet.With regard to hot isostatic pressing for producing a contouring, The powder-metallurgically produced part 15 according to FIG. 4 can also proceed as follows be that in a machine-side made of ferrous material Part 5 of the mold 1 'a dimensionally enlarged contouring area 14 is formed on which a by hot isostatic pressing a tungsten and / or Molybdenum powder with Eisenbeimengung separately generated part 15 cohesively is arranged. As a preparatory action is the contouring area 14 the machine-side part 5 spaced apart a cover 16 associated with Part 5 is firmly connected. The cavity 17 between the cover 16 and the machine side part 5 is mixed with a mixed with iron powder tungsten and / or molybdenum powder filled, provided for this purpose opening 18 sealed and evacuated at 19. Subsequently, the separately generated part 15 by hot isostatic pressing at a given temperature and constant Pressure over a predetermined time with the machine-side part 5 cohesively connected with simultaneous sintering of the respective metal powder. After graduation of hot isostatic pressing, the cover 16 is removed and the Mold 1 'arranged in the present form in a die-casting machine.

Claims (6)

  1. A mould for a light-metal casting machine,
    formed by power metallurgy from tungsten and/or molybdenum with admixed lower-melting metals,
    characterised in that
    the casting contour-shaping region (2) of the mould (1) is produced as a separate part (3) with an intrinsically rigid wall (4) by sintering or hot isostatic pressing, and
    the part (5) of the mould (1) facing the machine is constructed by embedding the contour-shaping part (3) in an iron material (6) which bonds to the material forming the part (3).
  2. A mould according to claim 1, characterised in that the contour-shaping part (3) is positioned in a destructible moulding trough (7) for embedding in the iron material (6).
  3. A mould according to claims 1 and 2, characterised in that
    the contour-shaping part (3) is formed in one or more pieces, wherein
    in the case of a multipart construction, a number of pre-sintered portions (9, 10, 10', 11, 11') are joined by final sintering to form a single part (3).
  4. A mould according to claim 1, characterised in that a one-piece contour-shaping part (3) is produced in a separate trough (13), equipped with a partial casting pattern (12), by pouring in a tungsten and/or molybdenum powder with admixed iron powder and/or iron pieces and subsequent sintering.
  5. A mould according to claim 1, characterised in that a one-piece contour-shaping part (3) is produced in a separate pressure-resistant container (13'), equipped with a partial casting pattern (12), by pouring in a tungsten and/or molybdenum powder with admixed iron and subsequent hot isostatic pressing.
  6. A mould for a light-metal die-casting machine
    produced by powder metallurgy from tungsten and/or molybdenum with admixed iron,
    characterised in that
    an enlarged contour-shaping region (14) is formed in a part (5) of the mould (1') facing the machine and formed of iron material, and
    a part (15) separately formed by hot isostatic pressing of a tungsten and/or molybdenum powder with admixed iron is placed on and material-bonded to the said region.
EP01126257A 2000-12-14 2001-11-06 Moulding die for light alloy die casting apparatus Expired - Lifetime EP1214998B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10062468A DE10062468A1 (en) 2000-12-14 2000-12-14 Casting mold for light metal casting machine
DE10062468 2000-12-14

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EP1214998A2 EP1214998A2 (en) 2002-06-19
EP1214998A3 EP1214998A3 (en) 2003-12-17
EP1214998B1 true EP1214998B1 (en) 2005-08-31

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AT (1) ATE303217T1 (en)
DE (2) DE10062468A1 (en)

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CN104942262B (en) * 2015-07-10 2017-05-03 武汉科技大学 Functional gradient die-casting die and manufacturing process thereof

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JPS6330168A (en) * 1986-07-21 1988-02-08 Ngk Spark Plug Co Ltd Production of ceramic-metal composite body
DE3738450A1 (en) * 1987-11-12 1989-06-01 Werner Weinmueller Die for diecasting
DE19636968B4 (en) * 1996-09-12 2008-08-07 Steinbeis Transferzentrum Arbeitsgemeinschaft Metallguss An Der Fachhochschule Aalen Process for the production of metallic prototypes

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EP1214998A3 (en) 2003-12-17
DE50107270D1 (en) 2005-10-06
DE10062468A1 (en) 2002-06-20
ATE303217T1 (en) 2005-09-15

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