EP1934002B1 - Noyaux et procédé de production de noyaux - Google Patents

Noyaux et procédé de production de noyaux Download PDF

Info

Publication number
EP1934002B1
EP1934002B1 EP06793909.0A EP06793909A EP1934002B1 EP 1934002 B1 EP1934002 B1 EP 1934002B1 EP 06793909 A EP06793909 A EP 06793909A EP 1934002 B1 EP1934002 B1 EP 1934002B1
Authority
EP
European Patent Office
Prior art keywords
cores
water
soluble
core material
salts
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
Application number
EP06793909.0A
Other languages
German (de)
English (en)
Other versions
EP1934002A1 (fr
Inventor
Dieter Käfer
Gudrun Schiller
Gisbert Schulze
Dr. Peter Stingl
Roland Werner
Horst Walter Rockenschaub
Reinhold Georg Gschwandtner
Thomas Pabel
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.)
Ceramtec GmbH
Original Assignee
Ceramtec GmbH
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
Application filed by Ceramtec GmbH filed Critical Ceramtec GmbH
Publication of EP1934002A1 publication Critical patent/EP1934002A1/fr
Application granted granted Critical
Publication of EP1934002B1 publication Critical patent/EP1934002B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B22C9/105—Salt cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/18—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/12—Treating moulds or cores, e.g. drying, hardening
    • B22C9/123—Gas-hardening

Definitions

  • the present invention relates to cores and to a process for the production of cores for use as cavity placeholders in the production of metallic and non-metallic moldings from water-completely soluble and therefore residue-free removable from the moldings materials by core shooting.
  • the cores must remain dimensionally stable when the material is introduced into the mold, during casting or injection, and after solidification of the material, they can easily be removed from the intended cavity.
  • cores are required in large numbers, for example, in series production in foundries, it is necessary to be able to produce the cores in constant quality as quickly as possible in the shortest possible time. If special demands are placed on the surface and contour accuracy of the cavities of the workpieces, the surface of the cores must be particularly smooth and contour-accurate and the cores must be able to be removed completely free of residue from the cavities of the workpieces. Residues of conventional cores containing non-dissolvable components, such as quartz sand, can result in damage to surfaces to be refined or failure of an aggregate, for example, if sand residues in the pump housing of an injection pump lead to blockage of an injection nozzle.
  • non-dissolvable components such as quartz sand
  • the cores according to the invention consist of a molding material and optionally substances which influence the properties and quality of the cores, such as fillers, binders, additives and catalysts. All of these substances, as well as the substances that result from possible reactions, form the core material.
  • This core material is completely soluble in water and can thus be removed without residue from the cavities of the workpieces after shaping.
  • the nuclei do not disintegrate into insoluble constituents after dissolution of the binder, but all substances dissolve completely. All compositions of the core materials can be processed by core shooting as a molding process.
  • the cores of the invention have the advantage that they are composed of substances that do not pollute the environment when handled properly, neither in their preparation, nor during the casting process. At her removal From the workpieces there are no residues that require special disposal.
  • the substances can be recovered by suitable processes from the liquid phase, for example the salt by spray drying or evaporation.
  • the cores according to the invention can be produced using conventional core shooters.
  • the complexity of the geometry of the cores determines the core shooting parameters as well as the design and design of the tool for making the cores and shooting head of the core shooter.
  • the core shooting allows due to the transport of the claimed core materials by the compression means, the compressed gas, the production of very complicated cores built with great contour accuracy at the surface as well as homogeneous structure with uniform density and strength.
  • Suitable molding materials are the chlorides of alkali and alkaline earth elements such as in particular sodium chloride, potassium chloride and magnesium chloride, the water-soluble sulfates and nitrates of alkali and alkaline earth elements such as in particular potassium sulfate, magnesium sulfate, and water-soluble ammonium salts such as ammonium sulfate in particular.
  • These substances can be used individually or as a mixture, as far as they do not react with each other and thus adversely affect the desired properties, because the molding material should undergo no material conversion in the core production, which adversely affects its solubility.
  • all easily soluble salts are suitable whose decomposition or melting point is above the temperature of the liquid metal, the melt, or the injected plastic.
  • the moldings can be easily and simply divided into the desired particle sizes or particle size classes, comparable to sand.
  • the chosen particle size distribution influences in particular the surface properties of the cores. ever the smaller the grain size, the smoother the surface.
  • the highest possible degree of spatial filling is sought, which can be achieved by mixing different salts and optionally the additional substances with different distribution curves, for example by a bi- or trimodal grain distribution of the mixture.
  • grain sizes in the range of 0.01 mm to 2 mm are selected, preferably as Gaussian distribution, depending on the material, desired surface quality and contour accuracy of the workpiece to be cast or molded from plastic.
  • Water-soluble fillers can replace part of the molding material so far, up to 30% by weight, so as not to adversely affect density and strength.
  • the grain size of the filler is suitably adjusted to the particle size or the particle size distribution of the molding material.
  • binder is added to the molding material before the core shooting. All binders are possible which, after the curing process, are completely water-soluble, which thoroughly wet the molding material and optionally the fillers and wherein the mixture of these materials can be shaped into cores by means of core shooting. Silicate binders are generally suitable if they are water-soluble. It is also possible to use the water-soluble alkali metal and ammonium phosphates or monoaluminum phosphate binders. Binders of soluble water glass are preferred. The amount added depends on the water glass module, 1 to 5, and is, depending on the wetting behavior, between 0.5 wt .-% and 15 wt .-%.
  • the properties of a mixture of molding material, optionally filler and binder can be influenced by the targeted addition of additives.
  • a prerequisite here is that these additives or the reaction products of these additives by dissolution in water completely and without residue from the Cavity of a workpiece are removable.
  • these additives may be: wetting agents, additives which influence the consistency of the mixture, lubricants, deagglomerating additives, gelling agents, additives which alter the thermophysical properties of the core, for example the thermal conductivity, additives which adhere the metal / plastic to the Cores prevent additions that lead to better homogenization and miscibility, additives that increase shelf life, additives that prevent premature curing, additives that prevent the formation of moisture and condensation during casting and additives that accelerate the curing process.
  • these additives are known to those skilled in the art of making conventional cores. Their added quantity depends on the type and composition of the molding material.
  • the composition of the core material it may be necessary to use matched catalysts to initiate and accelerate the hardening process so that the cores have the required strength after core shooting.
  • the gas influencing the core material in particular for hardening and drying the cores, can be blown into the still closed form after firing.
  • the pressure may be lower than when shooting the cores and be up to about 5 bar.
  • thermal aftertreatment of the cores at temperatures that can be up to 500 ° C.
  • a thermal treatment takes place already during the shaping in the mold by heating them to a temperature matched to the core material.
  • the core material is composed of the molding material and the binder and the additives such as fillers, additives and catalysts, if necessary. All substances can be mixed with known mixing units be mixed homogeneously.
  • the amount of binder and additive additives to be added depends on the purpose of the cores and determines the surface quality as well as the density and strength of the cores.
  • the processing of the core materials can be carried out separately from the core shooting process, where appropriate, suitable protective measures must be provided to prevent agglomeration and premature curing.
  • suitable protective measures For example, depending on the composition of the core material, treatment, transport and storage can also take place under protective gas.
  • Substances which alter the properties of the other materials of the core material are advantageously fed directly into the core shooter.
  • the mixing then takes place in the gas stream, which transports the other substances into the mold.
  • the core material is injected into the mold at pressures between 1 bar and 10 bar, matched to the composition of the core material or to the filling and flowability of the mass.
  • the filling pressure is dependent on the particle size distribution or the grain size and grain shape. Fine-grained salts generally require higher shooting pressures.
  • the surface quality of the cores according to the invention can be adjusted so that no size must be used. If, nevertheless, a surface treatment with a size is intended, the size should also be completely water-soluble.
  • a salt sizing which consists of the same or a similar to the molding material in the behavior of salt.
  • the sizing may be applied in the usual manner by dipping, spraying, brushing or brushing.
  • Cores made of NaCl are particularly suitable for light metal casting, for example for aluminum casting alloys, in which the cores are exposed to temperatures of less than 800 ° C.
  • NaCl is used in the particle size range of 0.063 mm to 2 mm, preferably in the Gaussian distribution, where the distribution can be multimodal.
  • Particularly suitable as the binder is water glass, the amount added being determined by the waterglass modulus, 1 to 5, and being between 0.5 and 15% by weight.
  • Other water-soluble silicate compounds are also preferably used.
  • the temperature of the mold is tuned to the composition of the core materials in a temperature range from room temperature to 500 ° C.
  • the hardening of the cores can be done by gassing, for example with CO 2 , and / or by the action of temperature.
  • the cores have a density of 0.9 g / cm 3 to 1.8 g / cm 3 , a 3-point bending strength of 100 N / cm 2 to 750 N / cm after core shooting, depending on their composition and a possible heat treatment 2 and a surface quality Ra, depending on the grain size, between 5 microns and 200 microns.
  • the cores are storable. After casting the workpieces, the cores are removed from the cavities by complete dissolution in water residue.
  • Cores of NaCl with a mean grain size D50 of 0.7 mm with 5% by weight of water glass of module 4 were produced. NaCl and water glass were homogeneously mixed in a conventional mixer and filled into a core shooter. The core material was shot with air at a pressure of 4 bar into the mold. The mold was at room temperature. After firing, fumigation was carried out to cure with CO 2 .
  • K 2 SO 4 cores are particularly suitable for copper-based materials, brass and bronze, where the cores are exposed to higher temperatures than aluminum casting.
  • K 2 SO 4 can also be used in the particle size range of 0.063 mm to 2 mm, preferably in the Gaussian distribution and optionally multimodal.
  • Waterglass is also particularly suitable as a binder, the amount added being determined by the waterglass modulus, 1 to 5, and being between 1 and 10% by weight.
  • Other water-soluble silicate compounds are also preferably used.
  • the temperature of the mold is tuned to the composition of the core materials in a temperature range from room temperature to 500 ° C.
  • the hardening of the cores can be done by gassing and / or by the action of temperature.
  • the cores have a density of 0.8 g / cm 3 to 1.6 g / cm 3 , a 3-point bending strength of 80 N / cm 2 to 600 N / cm after core shooting, depending on their composition and a possible heat treatment 2 and a surface quality Ra, depending on the grain size, between 10 microns and 250 microns.
  • the cores are storable. After casting the workpieces, the cores are removed from the cavities by complete dissolution in water residue.
  • Cores of K 2 SO 4 with a particle size D 50 of 0.85 mm with 8% by weight of water glass of modulus 2.5 were produced.
  • K 2 SO 4 and water glass were homogeneously mixed in a conventional mixer and filled into a core shooter.
  • the core material was shot with air at a pressure of 4 bar into the mold.
  • the mold had a temperature of 180 ° C. After firing, gassing was carried out with CO 2 .
  • the invention thus relates to cores for use as cavity placeholders in the production of metallic and non-metallic moldings from a core material consisting of salt or a mixture of salts as molding material and optionally additional materials such as fillers, binders, additives and catalysts, wherein the core material after curing is completely dissolvable in water and dissolved in water without residue removed from the moldings and that the cores of salt or salts in non-liquid form and optionally additional substances by Kernsch mansko can be produced with tuned to the composition of the core material pressures.
  • Cores according to the invention wherein they can be produced with pressures of 1 bar to 10 bar.
  • the molding materials chlorides of alkali and alkaline earth elements such as in particular sodium chloride, potassium chloride and magnesium chloride, the water-soluble sulfates and nitrates of alkali and alkaline earth elements such as potassium sulfate in particular, magnesium sulfate, and the water-soluble ammonium salts such as ammonium sulfate, are.
  • alkali and alkaline earth elements such as in particular sodium chloride, potassium chloride and magnesium chloride
  • the water-soluble sulfates and nitrates of alkali and alkaline earth elements such as potassium sulfate in particular, magnesium sulfate
  • the water-soluble ammonium salts such as ammonium sulfate
  • the cores have a density of 0.9 g / cm 3 to 1.8 g / cm, a 3-point bending strength of 100 N / cm 2 to 750 N / cm 2 and a surface quality Ra of 5 ⁇ m to 200 ⁇ m.
  • cores whose core material of sodium chloride as molding material with a grain size of 0.7 mm and water glass of the module 4 with a proportion of 5 wt .-%, compacted with a firing pressure of 4 bar in a mold at room temperature and cured with CO 2 , and whose density is 1.4 g / cm 3 , the 3-point bending strength 180 N / cm 2 and the surface quality Ra is 32 ⁇ m.
  • the core material consists of potassium sulfate as a molding material with a particle size between 0.063 mm and 2 mm, preferably as Gaussian distribution, and water glass as a binder in a proportion of 1 to 10 wt .-%, depending on the specific surface area, the wetting behavior and the particle size distribution and matched to the water glass module, and that the cores have a density of 0.8 g / cm 3 to 1.6 g / cm 3 , a 3-point bending strength of 80 N / cm 2 to 600 N / cm 2 and a surface quality Ra of 10 ⁇ m to 250 ⁇ m.
  • cores whose core material is potassium sulfate as molding material having a grain size of 0.85 mm and water glass of the module 2.5 with a proportion of 8 wt .-%, compacted with a firing pressure of 4 bar in a heated to 180 ° C. Form and cured with CO 2 , and that the density is 1.25 g / cm 3 , the 3-point bending strength 145 N / cm 2 and the surface quality Ra 80 microns.
  • the invention also relates to a method for the production of cores for use as a cavity placeholder in the production of metallic and non-metallic moldings from a core material consisting of salt or a mixture of salts as molding material and optionally additional materials such as fillers, binders, additives and catalysts characterized in that for the preparation of the cores in water completely soluble and dissolved in water residues are removed from the moldings removable salt or removable salts in non-liquid form and optionally homogeneously mixed with the additional, matched in the grain size on the molding material and completely dissolvable in water substances and that the cores are shaped according to the core shooting method, with pressures matched to the composition of the core material, the particle size distribution or the grain size and grain shape.
  • filler or fillers are added in a proportion of up to 30 wt .-% of the core material and that the grain size of the filler is adjusted to the grain size of the molding material.
  • binders are added with a proportion depending on the specific surface, the wetting behavior and the particle size distribution, and that these binders are preferably water-soluble silicate compounds, in particular water glasses, alkali phosphates, ammonium phosphates and monoaluminum phosphate.
  • a water glass is added depending on the wetting behavior and water glass module in a proportion of 0.5 wt .-% to 15 wt .-%.
  • the cores are gassed after firing with aligned to the core material gases for curing.
  • the fumigation takes place with CO 2 .
  • the pressure during fumigation is up to 5 bar.
  • a core material produced by homogeneously mixing the substances and injected at a pressure of 1 bar to 10 bar in a form which, depending on the composition of the core material, a temperature of from room temperature to 500 ° C, and that the core material is optionally cured by gassing and / or heat treatment, so that the cores have a density of 0.9 g / cm 3 to 1.8 g / cm 3 , a 3-point flexural strength of 100 N / cm 2 to 750 N / cm 2 and a surface finish Ra of 5 ⁇ m to 200 ⁇ m.

Claims (15)

  1. Noyaux destinés à être utilisés comme dispositifs de maintien de cavité dans la fabrication de corps moulés métalliques et non métalliques à partir d'un matériau de noyau, constitués de sel ou d'un mélange de sels comme matériau de moulage et éventuellement de substances supplémentaires telles que des charges, des liants, des additifs et des catalyseurs, caractérisés en ce que le matériau de noyau est complètement soluble dans l'eau après durcissement et peut, dissous dans l'eau, être retiré des corps moulés sans laisser de résidus, et en ce que les noyaux peuvent être fabriqués à partir de sel ou de sels sous forme non liquide et des substances supplémentaires éventuelles selon le procédé de tirage de sable à des pressions adaptées à la composition du matériau de noyau.
  2. Noyaux selon la revendication 1, caractérisés en ce qu'ils peuvent être fabriqués à des pressions allant de 1 à 10 bars.
  3. Noyaux selon la revendication 1 ou 2, caractérisés en ce que les matériaux de moulage sont des chlorures des éléments alcalins et alcalino-terreux, notamment le chlorure de sodium, le chlorure de potassium et le chlorure de magnésium, des sulfates et nitrates hydrosolubles des éléments alcalins et alcalino-terreux, notamment le sulfate de potassium, le sulfate de magnésium, ainsi que des sels d'ammonium hydrosolubles, notamment le sulfate d'ammonium.
  4. Noyaux selon l'une des revendications 1 à 3, caractérisés en ce qu'ils sont constitués de sels hydrosolubles dont le point de décomposition ou de fusion est supérieur à la température du métal liquide, de la masse fondue ou de la matière plastique injectée.
  5. Noyaux selon l'une des revendications 1 à 4, caractérisés en ce qu'ils sont constitués d'un sel unique comme matériau de moulage ou d'un mélange de sels comme matériau de moulage.
  6. Noyaux selon l'une des revendications 1 à 5, caractérisés en ce que la granulométrie des matériaux de moulage est comprise entre 0,01 et 2 mm, de préférence en distribution gaussienne, en fonction du matériau, de la qualité de surface souhaitée et de la précision du contour de la pièce à mouler en métal ou à injecter en matière plastique.
  7. Noyaux selon l'une des revendications 1 à 6, caractérisés en ce qu'une partie du matériau de noyau est constituée d'une charge soluble dans l'eau, en ce que la granulométrie de la charge est adaptée à celle du matériau de moulage, et en ce que la proportion de la charge dans le matériau de noyau peut atteindre 30 % en poids.
  8. Procédé de fabrication de noyaux destinés à être utilisés comme dispositifs de maintien de cavité dans la fabrication de corps moulés métalliques et non métalliques à partir d'un matériau de noyau, les noyaux étant constitués de sel ou d'un mélange de sels comme matériau de moulage et éventuellement de substances supplémentaires telles que des charges, des liants, des additifs et des catalyseurs, caractérisé en ce que, pour la production des noyaux, un sel ou des sels sous forme non liquide sont choisis, lesquels peuvent être complètement dissous dans l'eau et éliminés dans l'eau sans laisser de résidus des corps moulés, et éventuellement mélangés de manière homogène avec les substances supplémentaires pouvant être complètement dissoutes dans l'eau et dont la granulométrie est adaptée au matériau de moulage, et en ce que les noyaux sont formés selon le procédé de tirage de sable à des pressions adaptées à la composition du matériau de noyau, à la distribution granulométrique ou à la granulométrie et à la forme des grains.
  9. Procédé selon la revendication 8, caractérisé en ce que les noyaux sont formés à des pressions allant de 1 à 10 bars.
  10. Procédé selon la revendication 8 ou 9, caractérisé en ce qu'un degré de densité élevé des moules est assuré par le matériau de noyau en mélangeant des sels comme matériau de moulage et éventuellement des substances supplémentaires présentant des granulométries aux courbes de distribution différentes, de préférence par une distribution granulométrique bimodale ou trimodale du mélange.
  11. Procédé selon l'une des revendications 8 à 10, caractérisé en ce que le matériau de moulage choisi est constitué par des chlorures des éléments alcalins et alcalino-terreux, notamment le chlorure de sodium, le chlorure de potassium et le chlorure de magnésium, des sulfates et nitrates hydrosolubles des éléments alcalins et alcalino-terreux,
    notamment le sulfate de potassium, le sulfate de magnésium, ainsi que des sels hydrosolubles d'ammonium, notamment le sulfate d'ammonium, lesquels sont éventuellement mélangés de manière homogène avec les substances supplémentaires, et transformés en noyaux.
  12. Procédé selon l'une des revendications 8 à 11, caractérisé en ce que des matériaux de moulage ayant une granulométrie comprise entre 0,01 et 2 mm sont utilisés, de préférence en distribution gaussienne, en fonction du matériau, de la qualité de surface souhaitée et de la précision du contour de la pièce à mouler en métal ou à injecter en matière plastique.
  13. Procédé selon l'une des revendications 8 à 12, caractérisé en ce qu'une ou des charges sont ajoutées dans une proportion allant jusqu'à 30 % en poids de la matière de noyau, et en ce que la granulométrie de la charge est adaptée à celle du matériau de moulage.
  14. Procédé selon l'une des revendications 8 à 13, caractérisé en ce qu'un ou plusieurs liants sont ajoutés dans une proportion dépendant de la surface spécifique, du comportement de mouillage et de la distribution granulométrique, et en ce que ces liants sont de préférence des composés de silicate hydrosolubles, notamment des verres solubles, des phosphates alcalins, des phosphates d'ammonium et du phosphate monoaluminium.
  15. Procédé selon la revendication 14, caractérisé en ce que sont ajoutés un verre soluble comme liant en fonction du comportement de mouillage, et un module de verre soluble dans une proportion de 0,5 à 15 % en poids.
EP06793909.0A 2005-09-30 2006-09-29 Noyaux et procédé de production de noyaux Active EP1934002B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005047416 2005-09-30
DE102006018481 2006-04-19
PCT/EP2006/066882 WO2007036563A1 (fr) 2005-09-30 2006-09-29 Noyaux et procede de production de noyaux

Publications (2)

Publication Number Publication Date
EP1934002A1 EP1934002A1 (fr) 2008-06-25
EP1934002B1 true EP1934002B1 (fr) 2019-07-31

Family

ID=37487718

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06793909.0A Active EP1934002B1 (fr) 2005-09-30 2006-09-29 Noyaux et procédé de production de noyaux

Country Status (6)

Country Link
US (1) US20090250587A1 (fr)
EP (1) EP1934002B1 (fr)
JP (2) JP4950998B2 (fr)
KR (2) KR101492786B1 (fr)
BR (1) BRPI0616623B1 (fr)
WO (1) WO2007036563A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2190933B1 (fr) * 2007-07-13 2019-09-18 Advanced Ceramics Manufacturing, LLC Mandrins a base d'agregats destines a la production de pieces composites et procedes de production de pieces composites
RU2551335C2 (ru) * 2008-07-18 2015-05-20 Керамтек Гмбх Стержень на солевой основе и способ его изготовления
DE102010029077A1 (de) * 2009-05-18 2010-11-25 Ceramtec Ag Kerne auf der Basis von Salz mit behandelter Oberfläche
CN102695572A (zh) * 2009-11-06 2012-09-26 埃米尔·米勒有限责任公司 盐基型芯、其制造方法和用途
EP2576100A1 (fr) * 2010-06-02 2013-04-10 Emil Müller GmbH Noyaux de sel stabilisés par un infiltrat
DE102012203800B3 (de) * 2012-03-12 2013-05-29 Federal-Mogul Nürnberg GmbH Verfahren und Vorrichtung zum Herstellen eines Kolbens mit einem Kühlkanal, sowie danach hergestellter Kolben
SI24501A (sl) * 2013-10-21 2015-04-30 Rc Simit, D.O.O. Vezivo za kompaktiranje sipkega materiala in postopek uporabe veziva
DE102015209762A1 (de) * 2015-05-28 2016-12-01 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Herstellung von SMC-Hohlbauteilen
CN107884258B (zh) * 2017-11-24 2021-07-20 四川共享铸造有限公司 一种模具
JP2021098212A (ja) 2019-12-23 2021-07-01 トヨタ自動車株式会社 塩中子の製造方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1934787A1 (de) * 1969-07-09 1971-01-14 Schmidt Gmbh Karl Salzkern fuer Giessereizwecke
JPS4937175B1 (fr) * 1969-12-16 1974-10-07
FR2077555A1 (en) * 1969-12-16 1971-10-29 Sumitomo Chemical Co Magnesium chloride-based water-soluble - removable casting cores
US4446906A (en) * 1980-11-13 1984-05-08 Ford Motor Company Method of making a cast aluminum based engine block
DE3530910A1 (de) * 1984-08-31 1986-03-13 Hitachi, Ltd., Tokio/Tokyo Verfahren zur herstellung von giessformen
JPS6393445A (ja) * 1986-10-07 1988-04-23 Ube Ind Ltd ダイカスト用中子
JPH0824996B2 (ja) * 1989-10-31 1996-03-13 宇部興産株式会社 水溶性中子及びその製造方法
US6045745A (en) * 1997-01-15 2000-04-04 Reno; Kurtis Pierre Water soluble cores containing polyvinyl alcohol binders and related methods
FR2842129B1 (fr) * 2002-07-10 2005-04-08 Peugeot Citroen Automobiles Sa Procede de moulage d'une piece metallique dans un moule renfermant au moins un noyau de moulage, procede de realisation d'un noyau de moulage et noyau de moulage
JP2004174598A (ja) * 2002-11-23 2004-06-24 Taiyo Machinery Co Ltd 水溶性中子用の鋳物砂及び水溶性中子の製造方法並びに水溶性中子
DE10305612B4 (de) * 2003-02-11 2005-04-07 Ashland-Südchemie-Kernfest GmbH Beschichtungsmassen für Gusskerne
DE10312782B4 (de) * 2003-03-21 2005-05-04 Emil Müller GmbH Wasserlösliche Salzkerne und Verfahren zur Herstellung wasserlöslicher Salzkerne
JP4209286B2 (ja) * 2003-08-19 2009-01-14 トヨタ自動車株式会社 高強度水溶性中子、及びその製造方法
JP2005066634A (ja) * 2003-08-22 2005-03-17 Toyota Motor Corp 水溶性中子バインダ、水溶性中子、及びその製造方法
EP1781433A2 (fr) * 2003-12-17 2007-05-09 KS Aluminium Technologie Aktiengesellschaft Noyau pouvant etre retire pour le moulage de metaux et procede de production dudit noyau
DE10359547B3 (de) * 2003-12-17 2005-03-03 Emil Müller GmbH Wasserlösliche Salzkerne

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
KR20080058446A (ko) 2008-06-25
KR101580775B1 (ko) 2015-12-30
US20090250587A1 (en) 2009-10-08
BRPI0616623B1 (pt) 2018-05-15
KR20140072149A (ko) 2014-06-12
JP4950998B2 (ja) 2012-06-13
JP2012030289A (ja) 2012-02-16
WO2007036563A1 (fr) 2007-04-05
JP5412492B2 (ja) 2014-02-12
KR101492786B1 (ko) 2015-02-12
EP1934002A1 (fr) 2008-06-25
BRPI0616623A2 (pt) 2011-08-23
JP2009509768A (ja) 2009-03-12

Similar Documents

Publication Publication Date Title
EP1934002B1 (fr) Noyaux et procédé de production de noyaux
EP2307158A2 (fr) Noyaux à base de sel et procédé de fabrication desdits noyaux
EP3060362B1 (fr) Système multi-composants four fabriquer des moules et noyaux et procédés de fabrication des moules et noyeaux
EP1633509B1 (fr) Procede de realisation de modeles par couches
DE102010043451A1 (de) Kerne auf der Basis von Salz, Verfahren zu ihrer Herstellung und deren Verwendung
WO2011151420A1 (fr) Noyaux de sel stabilisés par un infiltrat
EP2836318A2 (fr) Noyaux à base de sel, procédé de fabrication de ces noyaux et leur utilisation
EP2163328A1 (fr) Sable de noyau ou de moule revêtu par et/ou mélangés avec des silicates de potassium ayant une teneur en eau comprise entre environ 0,25 poids -% jusqu'à environ 0,9 poids -%
EP0421374A2 (fr) Procédé de fabrication d'articles en fonte avec couche superficielle résistante à l'usure et produit réalisé avec ce procédé
DE102006036381A1 (de) Formstoff, Gießerei-Formstoff-Gemisch und Verfahren zur Herstellung einer Form oder eines Formlings
DE2166252C3 (de) Spritzgießfähige feuerfeste Materialmischung und Verfahren zur Herstellung von feuerfesten Gegenständen aus dieser. Ausscheidung aus: 2157845
WO2006058664A2 (fr) Utilisation de sels peu solubles combines a du verre soluble pour fabriquer des moules et des noyaux pour des applications en fonderie
DE102006046792A1 (de) Kerne sowie ein Verfahren zur Herstellung von Kernen
DE602004000938T2 (de) Verwendung von harzbeschichtetem Sand für die Herstellung von Formen in Rapid-Prototyping Systemen
EP3006136A1 (fr) Utilisation d'une composition basique en tant que moyen d'infiltration pour la matiere a mouler d'un moule destine a eviter des depots blancs (surfaces piquees) sur des elements en coulee, procede correspondant, moules et kits
DE112012004397T5 (de) Giesskern, Verfahren zu seiner Herstellung, und Giessverfahren unter Verwendung des Kerns
WO2020253917A1 (fr) Moules de fonderie poteyés pouvant être obtenus à partir d'un mélange de matières à mouler contenant un liant inorganique et des composés phosphatés et des composés d'oxyde de bore et procédé pour les fabriquer et leur utilisation
DE1646508A1 (de) Verfahren zur Herstellung einer faserhaltigen,feuerfesten,waermeisolierenden Masse
DE102018114700B3 (de) Verwendung eines Verfahrens zur Herstellung eines Werkzeugs für die Aluminiumblech-Umformung
EP1620216B1 (fr) Matiere a mouler, piece moulee et procede de fabrication de pieces moulees pour un moule
EP3181264A1 (fr) Noyaux salins et leur procédé de fabrication
AT358289B (de) Verfahren zur oberflaechenbehandlung von aus einer mischung hergestellten teilen
DE1783004C3 (de) Löslicher Kern zur Verwendung beim Metallgießen und Verfahren zu seiner Herstellung
EP0945200A1 (fr) Moule de fonderie et procédé de fabrication
DE1571320C (de) Verfahren zum Herstellen einer Dauer gießform aus Kohlenstoff

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20080502

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: CERAMTEC AG

17Q First examination report despatched

Effective date: 20080625

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: CERAMTEC GMBH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 502006016317

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: B22C0009100000

Ipc: B22C0009120000

RIC1 Information provided on ipc code assigned before grant

Ipc: B22C 9/12 20060101AFI20190225BHEP

Ipc: B22C 9/10 20060101ALI20190225BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190409

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

GRAL Information related to payment of fee for publishing/printing deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR3

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

GRAR Information related to intention to grant a patent recorded

Free format text: ORIGINAL CODE: EPIDOSNIGR71

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

INTC Intention to grant announced (deleted)
INTG Intention to grant announced

Effective date: 20190618

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1160382

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190815

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502006016317

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20190731

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190731

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191031

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190731

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190731

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190731

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190731

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191101

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190731

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190731

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190731

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190731

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190731

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200224

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190731

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190731

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502006016317

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG2D Information on lapse in contracting state deleted

Ref country code: IS

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190930

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190930

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190929

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190929

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20190930

26N No opposition filed

Effective date: 20200603

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190930

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190731

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20191031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190930

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191031

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1160382

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190929

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190929

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20060929

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230515

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20230926

Year of fee payment: 18