EP1193008B1 - Procédé pour la production d' un récipient de coulée et récipient de coulée - Google Patents

Procédé pour la production d' un récipient de coulée et récipient de coulée Download PDF

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Publication number
EP1193008B1
EP1193008B1 EP00117320A EP00117320A EP1193008B1 EP 1193008 B1 EP1193008 B1 EP 1193008B1 EP 00117320 A EP00117320 A EP 00117320A EP 00117320 A EP00117320 A EP 00117320A EP 1193008 B1 EP1193008 B1 EP 1193008B1
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EP
European Patent Office
Prior art keywords
riser
casting
core
region
casting vessel
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
EP00117320A
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German (de)
English (en)
Other versions
EP1193008A1 (fr
Inventor
Roland Fink
Norbert Dr.-Ing. Erhard
Herbert Schulte
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.)
Oskar Frech GmbH and Co KG
Original Assignee
Oskar Frech GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Application filed by Oskar Frech GmbH and Co KG filed Critical Oskar Frech GmbH and Co KG
Priority to EP00117320A priority Critical patent/EP1193008B1/fr
Priority to DE50000293T priority patent/DE50000293D1/de
Priority to ES00117320T priority patent/ES2177495T3/es
Priority to AT00117320T priority patent/ATE220587T1/de
Publication of EP1193008A1 publication Critical patent/EP1193008A1/fr
Application granted granted Critical
Publication of EP1193008B1 publication Critical patent/EP1193008B1/fr
Priority to HK02105407.4A priority patent/HK1043756B/zh
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • 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
    • B22D17/02—Hot chamber machines, i.e. with heated press chamber in which metal is melted
    • B22D17/04—Plunger machines

Definitions

  • the invention relates to a method for producing a Casting container, in particular for hot chamber die casting machines, by placing the pouring container in particular from a heat-resistant Tool steel is cast in one piece, at least one Casting chamber and at least one riser are introduced.
  • the invention also relates to the one produced by the method Casting container and a core for the production of Riser.
  • DE-A 21 43 937 is a casting container for a hot chamber die casting machine can be seen in the one a pressure piston receiving pressure chamber and an adjoining one has a riser hole leading a mouthpiece.
  • the pouring can is a casting made from a heat-resistant tool steel.
  • the riser hole is cast in with the help of inserted sand cores. To make this possible, the riser hole is on one End axially out of the casting tank and is there closed by an inserted screw.
  • the connection to the casting chamber takes place via a perpendicular to the riser hole extending channel, which is also by an inserted Core was made and externally also by a screw must be closed. Both the riser hole as well the cross channel must therefore be processed in a relatively complex manner become.
  • approximately rectangular Transition creates pressure losses for the flowing melt, which adversely affects the speed of work.
  • DE-A 39 17 487 proposed a casting tank for hot chamber die casting machines, in which a cast hole is cast in the area the mouth to the casting chamber and in the area of the mouthpiece bent tube is provided, which consists of at least two parts are welded together.
  • the tube itself is different in the course of its extension Wall thicknesses, which are particularly enlarge in the elbow provided on the nozzle side.
  • the pipe which has smooth inner contours and therefore a fluidic enables favorable deflection of the melting material, consists of several parts, the same must be cumbersome Positioned first and then together get connected. Also in the area of the weld seams it can be too temperature and / or when casting the pipe stress cracks occur, which in turn causes flow problems due to penetration of the material in the casting container the inside of the riser hole can come.
  • the invention has for its object a method and to design a casting tank, the riser without Use of separate pipes and without major rework can be produced, but the same fluidic favorable properties like a pipe. Furthermore, a core is to realize the desired properties be designed in the area of the riser.
  • This goal is achieved by at least the area the riser pipe by inserting a ceramic jacket formed, essentially smooth-walled core in the form is generated after the casting and molding phase removed from the cast container to form the riser becomes.
  • a casting tank in particular for hot chamber die casting machines, the particular is cast in one piece from a heat-resistant tool steel and at least one casting chamber and at least one riser has at one end in a casting chamber opens and at its other end for receiving a spray nozzle runs out into a mouthpiece, the riser through Insertion and removal of one of the contours of the riser corresponding ceramic core is made, and that the Contour of the riser through a straight line and curved sections is formed.
  • This goal is also achieved through a ceramic core with an essentially smooth-walled surface for production a riser in the area of a casting tank, in particular for a hot chamber die casting machine, consisting of one inside the other merging straight and curved sections, the rectilinear sections at least partially have different diameters.
  • the ceramic core can be adapted to the contour of the riser and preferably consists of a composition (in mass%) of 75% to 85% SiO 2 and 15% to 25% ZrSiO 4 .
  • the ceramic core is pressed to produce a smooth-walled surface, whereby different manufacturing processes (eg cold pressing) are available.
  • the core is preferably in the area of the later nozzle Approach formed, which after the casting process to the corresponding Wall of the casting tank extends and thus offers external access to the core.
  • Removal of this approach can now remove the residual material of the core, for example by high pressure Water, be removed or rinsed out. This will be simultaneous cleaned the riser now formed, so that none Core materials are more available.
  • the riser is a clean image of the ceramic core and also shows all straight and curved sections.
  • the casting container 1 which can be used in a hot chamber magnesium die casting machine described in DE-A 39 17 487.
  • the casting container 1 contains a casting chamber 2, which is closed at the bottom by an inserted plug 21, and a riser pipe 3 connected to the latter.
  • the area 6 of the riser 3 is also straight and runs approximately parallel to the casting chamber 2.
  • a straight section 8 which ends in a mouthpiece 9 for receiving a nozzle, not shown.
  • the riser 3 by using a cold-pressed ceramic core illustrated in Figure 4 of the composition (in% by mass) 80% SiO 2 and 20% ZrSiO 4 are produced, wherein the -. Then to approach 17 - with reference to Figure 5 in more detail above.
  • a bore 10 was created, which can be closed again by means of a plug 11.
  • the plug 11 is connected to the bore wall 10 'via weld seams 11'.
  • the stopper 11 is preferably made of the same material as the casting container 1 itself.
  • the inner contour 12 of the plug 11 corresponds to the inner contour of the riser.
  • the bore 10 is provided in the area of the mouthpiece 9 (curved section 7), but can also be arranged in other areas, for example in curved sections 4 of the casting container 1 (see FIG. 4).
  • the bore 10 extends to the outer wall 1 'and is therefore accessible from the outside to remove the core material.
  • FIG. 4 The above statements also apply to FIG. 4. The same parts are therefore with the same reference numerals Mistake. The only difference in FIG. 4 is that the Bore 10 and therefore the plug 11 is not at the top End of the riser 3, but in the lower area of the same is arranged.
  • the rectilinear sections 5, 6, 8 are in both Cases interconnected by curved sections 13, 14.
  • the straight sections 5, 6, 8 have different diameters.
  • the straightforward Section 5 a diameter of 20mm
  • the straight line Section 6 a diameter of 18mm
  • the straight line Section 8 have a diameter of 17mm.
  • the approximation to the different diameters takes place over the curved sections 13 and 14. Since the rectilinear section 5 opens directly into the casting chamber 2 without further paragraphs, here are no the flow flow of the melt obstacles formed edges, so that the material easily the mouthpiece 9 and the adjoining nozzle can be.
  • the working speed can be opposite the prior art can be significantly increased, wherein no damage in the area of the riser 3 can occur, as in the prior art according to DE-A 39 17 487 would be possible using a tube.
  • the Casting container 1 preferably consists of a heat-resistant Tool steel.
  • the ceramic core 15 now shows a ceramic core 15 in the composition (in mass%) 80% SiO 2 and 20% ZrSiO 4 .
  • the surface 16 of the ceramic core 15 is smooth-walled, so that smooth-walled contours are also formed in the region of the riser pipe 2.
  • the cross-sectional shape of the ceramic core 15 is approximately S-shaped, with straight-shaped sections 5 ', 6', 8 'being provided which are connected to one another via curved sections 13', 14 '.
  • the ceramic core 15 has an extension 17 which is provided in the extension of the straight section 6 '.
  • the projection 17 has a region 18 which runs conically in the direction of the curved section 13 ', the remaining region 19 being approximately cylindrical.
  • Deviating from a ceramic core, such as that used to manufacture a 1 would be provided, the approach 17th not on the nozzle side, but on the casting chamber side.
  • the Location of the approach 17 is first in each area of the G confusekernes 15 conceivable, but should preferably for better Removal of core material after completion of the Casting container 1 in the extension of the central axis 20 of the rectilinear section 6 ''. After manufacturing of the casting container 1 becomes at least a portion of the approach 17 removed, so that now for example a device can be put on or put on with high pressure water leads into the area of the remaining core material and the same smashed. The smashed core pieces or particles are either in the area of the casting chamber 2 or from the Mouthpiece 9 pushed out.
  • the thickened area 9 ' forms the future mouthpiece 9 for receiving the nozzle.
  • the rectilinear section 8 'in connection with the thickened area 9 ' is not at right angles on the central axis 20, but becomes acute, for example under at an angle of 5 °. This creates between the axis 20 of the straight section 6 'and the axis 22 of section 8 'an obtuse angle ⁇ .
  • the central axis 21 of the straight section 5 ' is perpendicular to the central axis 20 of section 6 '.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Claims (20)

  1. Procédé pour la fabrication d'un récipient de coulée (1), en particulier pour des machines à couler sous pression de magnésium à chambre chaude, selon lequel le récipient de coulée (1) est coulé d'une seule pièce, en particulier à partir d'un acier à outils résistant au fluage à température élevée ou à chaud, moyennant quoi au moins une chambre de coulée (2) et au moins une conduite montante (3) sont mises en place, caractérisé en ce qu'au moins la zone de la conduite montante (3) est générée par l'insertion dans le moule d'un noyau (15) formé d'un matériau céramique et sensiblement à paroi lisse (15), qui est enlevé du récipient de coulée (1) à la suite de la phase de coulée et de la phase de démoulage pour former la conduite montante (3).
  2. Procédé selon la revendication 1, caractérisé en ce qu'on utilise des noyaux (15) avec la composition (en pourcentage de masse) de 75% à 85% de SiO2 et de 15% à 25% de ZrSiO4.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que, pour former des alésages d'espacement de noyau (10) dans la zone du récipient de coulée (1), au moins une embase (17) est formée sur le noyau (15) concerné, en particulier dans le prolongement de la partie (6) formant la conduite montante (3) ultérieure.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le noyau (15) est pourvu de parties rectilignes (5', 6', 8') et de parties courbées (13', 14') pour générer des contours prédéfinissables de la conduite montante (3), des parties (5', 6', 8') rectilignes et reliées entre elles par des parties (13', 14') courbées étant disposées au moins partiellement de façon non perpendiculaire les unes par rapport aux autres.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le noyau (15) est pourvu au moins partiellement de diamètres différents dans la zone de ses parties (5', 6', 8') rectilignes, l'alignement étant fait par les parties (13', 14') incurvées.
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le noyau (15) est enlevé au moins par un enlèvement partiel de l'embase (17) et une démolition consécutive de la zone résiduelle ou des zones résiduelles, en particulier par de l'eau mise sous forte pression.
  7. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que, pour la fermeture de l'alésage (10) formé par l'embase, on utilise un bouchon (11) qui est pourvu, dans la zone de la conduite montante (3), du contour intérieur (12) respectif de celle-ci.
  8. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le bouchon (11) est fabriqué par coulée, en particulier dans le même matériau que le récipient de coulée (1).
  9. Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le bouchon (11) est positionné dans la bonne position et est relié ensuite au récipient de coulée (1), en particulier par soudure (11').
  10. Récipient de coulée, en particulier pour des machines à couler à chambre chaude, qui est coulé d'un seul bloc en particulier à partir d'un acier à outils résistant au fluage à température élevée ou à chaud et présente au moins une chambre de coulée (2) et au moins une conduite montante (3), qui débouche dans la chambre de coulée (2) sur l'une de ses extrémités (4) et sur l'autre extrémité sort dans une embouchure (9) pour le logement d'une buse d'injection, caractérisé en ce que la conduite montante (3) est fabriquée par l'introduction et l'enlèvement d'un noyau céramique (15) approprié au contour de la conduite montante (3) et en ce que le contour de la conduite montante (3) est formé par des parties rectilignes (5, 6, 8) et des parties incurvées (13, 14) qui se confondent.
  11. Récipient de coulée selon la revendication 10, caractérisé en ce que la conduite montante (3) est pourvue d'un alésage (10) verrouillable allant dans le sens d'une paroi extérieure (1') du récipient de coulée (1).
  12. Récipient de coulée selon la revendication 10 ou 11, caractérisé en ce que l'alésage (10) constitue le prolongement de la partie (6) rectiligne plus longue.
  13. Récipient de coulée selon l'une quelconque des revendications 10 à 12, caractérisé en ce que l'alésage (10) est prévu dans la zone de l'embouchure (9) pour le logement de la buse d'injection.
  14. Récipient de coulée selon l'une quelconque des revendications 10 à 13, caractérisé en ce que l'alésage (10) peut être fermé par un bouchon (11) qui peut être fixé à l'intérieur en particulier par soudage (11') et est pourvu, côté conduite montante, du contour intérieur (12) concerné dans cette zone de la conduite montante (3).
  15. Récipient de coulée selon l'une quelconque des revendications 10 à 14, caractérisé en ce que les parties (5, 6, 8) rectilignes de la conduite montante (3) sont pourvues au moins partiellement de diamètres différents, l'ajustement étant fait par les parties (13, 14) incurvées respectives.
  16. Noyau céramique avec une surface (16) essentiellement à paroi lisse pour générer une conduite montante (3) dans la zone d'un récipient de coulée (1), en particulier pour une machine à couler sous pression à chambre chaude, comprenant des parties rectilignes (5', 6', 8') et des parties incurvées (13', 14') qui se confondent, les parties (5', 6', 8') rectilignes présentant au moins partiellement différents diamètres.
  17. Noyau céramique selon la revendication 16, caractérisé par une embase (17) agencée en ligne droite dans la zone d'une des parties (13', 14') incurvées.
  18. Noyau céramique selon la revendication 16 ou 17, caractérisé en ce que l'embase (17) est prévue dans le prolongement de la partie (6') rectiligne plus longue.
  19. Noyau céramique selon l'une quelconque des revendications 16 à 18, caractérisé en ce que le noyau (15) comprend (en pourcentage de masse) 75% à 85% de SiO2 et 15% à 25% de ZrSiO4 et est fabriqué par injection sous pression.
  20. Noyau céramique selon l'une quelconque des revendications 16 à 19, caractérisé en ce qu'au moins l'une des parties (8') rectilignes est prévue en formant un angle (a) aigu avec la ligne médiane (20) d'une autre partie (6') rectiligne.
EP00117320A 2000-08-21 2000-08-21 Procédé pour la production d' un récipient de coulée et récipient de coulée Expired - Lifetime EP1193008B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP00117320A EP1193008B1 (fr) 2000-08-21 2000-08-21 Procédé pour la production d' un récipient de coulée et récipient de coulée
DE50000293T DE50000293D1 (de) 2000-08-21 2000-08-21 Verfahren zur Herstellung eines Giessbehälters sowie Giessbehälter
ES00117320T ES2177495T3 (es) 2000-08-21 2000-08-21 Procedimiento para la fabricacion de un recipiente de colada y recipiente de colada.
AT00117320T ATE220587T1 (de) 2000-08-21 2000-08-21 Verfahren zur herstellung eines giessbehälters sowie giessbehälter
HK02105407.4A HK1043756B (zh) 2000-08-21 2002-07-22 澆注容器的製造方法和澆注容器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00117320A EP1193008B1 (fr) 2000-08-21 2000-08-21 Procédé pour la production d' un récipient de coulée et récipient de coulée

Publications (2)

Publication Number Publication Date
EP1193008A1 EP1193008A1 (fr) 2002-04-03
EP1193008B1 true EP1193008B1 (fr) 2002-07-17

Family

ID=8169502

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00117320A Expired - Lifetime EP1193008B1 (fr) 2000-08-21 2000-08-21 Procédé pour la production d' un récipient de coulée et récipient de coulée

Country Status (5)

Country Link
EP (1) EP1193008B1 (fr)
AT (1) ATE220587T1 (fr)
DE (1) DE50000293D1 (fr)
ES (1) ES2177495T3 (fr)
HK (1) HK1043756B (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2143937B2 (de) * 1971-09-02 1977-05-18 Oskar Frech, Werkzeugbau, 7061 Weiler Giessbehaelter fuer eine warmkammer- druckgiessmaschine
DE3917487A1 (de) * 1989-05-30 1990-12-06 Frech Oskar Gmbh & Co Giessbehaelter fuer warmkammer-druckgiessmaschinen
US5779809A (en) * 1995-12-26 1998-07-14 General Electric Company Method of dissolving or leaching ceramic cores in airfoils

Also Published As

Publication number Publication date
DE50000293D1 (de) 2002-08-22
ES2177495T3 (es) 2002-12-16
HK1043756B (zh) 2003-01-24
ATE220587T1 (de) 2002-08-15
HK1043756A1 (en) 2002-09-27
EP1193008A1 (fr) 2002-04-03

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