EP1417060B1 - Giessform und verfahren zu deren herstellung - Google Patents
Giessform und verfahren zu deren herstellung Download PDFInfo
- Publication number
- EP1417060B1 EP1417060B1 EP03740129A EP03740129A EP1417060B1 EP 1417060 B1 EP1417060 B1 EP 1417060B1 EP 03740129 A EP03740129 A EP 03740129A EP 03740129 A EP03740129 A EP 03740129A EP 1417060 B1 EP1417060 B1 EP 1417060B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- binder component
- water
- particulate material
- polyamine
- binder
- 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
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Classifications
-
- 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
- B22C1/185—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 containing phosphates, phosphoric acids or its derivatives
-
- 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
- B22C1/167—Mixtures of inorganic and organic binding agents
Definitions
- the invention relates to a water-dispersible casting mold, in particular casting core, for the production of castings, the a water-insoluble, particulate material, in particular Foundry sand, a binder, which acts as a first binder component has at least one condensing phosphate.
- the invention further relates to a process for the preparation such a mold by a water-insoluble, Particulate material, in particular molding sand, with a binder, which as a first binder component at least having a condensed phosphate, with addition mixed by water, the mixture is shaped and at least one Part of the added free water is removed.
- Foundry cores of the aforementioned composition are known. They are usually in core boxes using core shooters manufactured for mass production.
- the core boxes are provided with corresponding mold cavities, in which Introductory openings lead, via the so-called Shooting head a water-insoluble, provided with a binder, particulate material using compressed air is injected into the mold cavities.
- particulate Material is generally molding sand, such as silica, zircon, chromite sands or the like, which are solidifiable by the binder.
- the molding sand should be a have good flowability.
- DE 195 49 469 A1 describes a casting core on the Base of solidified by means of a water-soluble binder Foundry sand, wherein as a binder phosphoric acid or condensed Phosphates, such as sodium polyphosphate and sodium hexametaphosphate, are provided.
- a binder phosphoric acid or condensed Phosphates such as sodium polyphosphate and sodium hexametaphosphate
- a casting core can be removed, which for Solidification of the molding sand a binder of a polyphosphate chains having water-soluble phosphate glass or from a water-soluble borate glass.
- the foundry core is the molding sand with the binder under Adding water mixed, the mixture in the core box shot in and the excess water by heating expelled from the mold.
- the known casting cores are water-dispersible after casting, i.e. they dissolve after immersion in water again, which eliminates the time-consuming coring.
- Another advantage of casting cores of this type is that both in the manufacture of the casting cores and the casting of the Castings as well as the coring of the castings no polluting Release substances.
- the binders used also have an inorganic chemistry, so that a burning of the binder during the casting reliably is avoided.
- the invention is based on the object of a casting mold, in particular a casting core, with a first binder component increased on the basis of condensed phosphates To give bending and abrasion resistance and temperature resistance to increase, but acceptable Cycle times in the core production to receive and none or release only small quantities of environmentally harmful substances. It is also concerned with the production of such a mold directed.
- this object is in a mold he mentioned type in that the binder as a second binder component comprises at least one polyamine.
- both the bending and the abrasion resistance of a casting mold or a casting core of a water-insoluble, particulate material and a binder based on condensed phosphates can be significantly increased even by the addition of only small amounts of polyamines, without the water dispersibility affect the cast casting core.
- bending strengths of more than 150 N / cm 2 can be achieved, reliably avoiding a failure of the casting core and resulting defective castings.
- the abrasion resistance of the casting mold or of the casting core is improved in such a way that impairments of the casting by sand particles are virtually ruled out.
- polyamines are in this context saturated or unsaturated, open-chain or cyclic organic compounds with multiple primary, secondary and / or tertiary amino groups, especially in liquid Form, meant.
- water-insoluble, particulate materials in particular any known form sands, e.g. Silica, zirconium, chromite sands or the like, or Other temperature-resistant materials, such as aluminum oxide, Aluminum silicate, quartz glass etc. in fine particulate Form, into consideration.
- sands e.g. Silica, zirconium, chromite sands or the like
- Other temperature-resistant materials such as aluminum oxide, Aluminum silicate, quartz glass etc. in fine particulate Form, into consideration.
- other can also Be provided binder components.
- polyamines such as ethylene, propylene, butylenediamines, etc. and their condensation products
- the polyamine is selected from the group of polymeric polyamines.
- the polyethyleneimines, ie branched polymers having primary, secondary and tertiary amino groups, polyvinylamines (vinylamine polymers) and / or copolymers thereof have proven to be particularly advantageous.
- the flexural strength of a foundry core of a foundry sand and a binder based on sodium polyphosphate can be almost doubled by the addition of 0.1% by mass of polyvinylamine, based on the molding sand.
- the polymeric polyamines can be provided in particular with a molecular weight between about 400 g / mol and about 10 7 g / mol.
- the chemical formulas for polyvinylamine (I) and polyethyleneimine (II) are exemplified below:
- the polyamine has a nitrogen content (N content) of between 1 and 35% by weight N / polymer unit, preferably between 10 and 33% by weight N / polymer unit, in particular between 20 and 33% by mass.
- N / polymer unit Particularly good flexural strengths of the casting core of more than 200 N / cm 2 could be achieved in particular with polymeric polyamines having a relatively high amino group density in the range of 30% by weight N / polymer unit, eg with polyvinylamines, which have a nitrogen content of up to 33% by weight. Having polymer unit and in particular with polyvinyl amines having a high proportion of free amino groups, can be achieved.
- the amount of polyamine provided as the second binder component is preferably between 0.001 and 1 mass%, in particular between 0.005 and 0.5 mass%, based on polyamine on the particulate material. It is aimed primarily according to the type of polyamine, the amount of In general, the higher the polyamine can be, the lower it can be the free amino group density of the polyamine is the binder properties in terms of bending and abrasion resistance to improve.
- the first binder component based on condensed phosphates may contain or consist entirely of polyphosphates, preferably alkali metal polyphosphates, in particular sodium polyphosphate, and / or metaphosphates, preferably alkali metal metaphosphates, in particular sodium metaphosphates, for example sodium hexametaphosphate.
- the first binder component contains or entirely consists of a water-soluble phosphate glass containing poly- and / or metaphosphate chains, wherein the phosphate glass preferably contains between 58 and 75 mass% phosphorus pentoxide (P 2 O 5 ) and between 25 and 42 Mass .-% alkali metal oxide, in particular sodium oxide (Na 2 O), having.
- the binders mentioned are known as such and ensure a quick and lump-free dissolution of the casting core when it is immersed in the finished casting in water. Another advantage of this binder is that they lead even with relatively low moisture content to an optimal mixing with the molding sand and thereby ensure a sufficient initial strength of the casting core or the mold, so that only very short drying times required and thus very short cycle times for the production possible are.
- the amount of the first binder component based on Condensed phosphates is useful between 0.25 and 25 mass%, preferably between 0.5 and 10 mass%, based on the water-insoluble, particulate material.
- the invention is characterized by at least one additive, preferably in the form of sulfates, carbonates and / or nitrates from the group of alkali metals and / or alkaline earth metals, such as alkali metal carbonates, in particular sodium carbonate (Na 2 CO 3 ).
- alkali metal carbonates in particular sodium carbonate (Na 2 CO 3 ).
- alkali metal carbonates increases the dispersibility of the casting core in water and thus facilitates the gutting of the finished casting.
- the molding material mixture for the mold or the Casting core usually still has a moisture content between 0.01 and 35 mass%, in particular between 0.1 and 5 mass%. After drying, the moisture content is the casting mold or the casting core usually about 0.01 mass% or less.
- the method according to the invention is characterized that a second binder component based on at least a polyamine is added.
- a second binder component based on at least a polyamine is added.
- a preferred embodiment provides that the second binder component in liquid form with the particulate Material brought into contact and then the first binder component is added in dry form, the Mixture of water is added.
- the second binder component may be in the liquid phase or as particular aqueous solution are present. Unless an aggregate, such as Alkali metal carbonates, this may be in the dissolved the mixture added water and the solution of Mixture be added.
- Another preferred embodiment provides that the first Binder component dry with the particulate material mixed and then an aqueous solution with the second Binder component is added, again, if desired, the aggregate before adding the solution in this can be solved.
- the binder and optionally the aggregate dissolved in water and the solution with the particulate material is brought into contact.
- the most homogeneous possible distribution of the water-soluble binder and optionally the additive can be achieved with the particulate material.
- the mixture first dried to a predetermined residual moisture, the mixture then added water again and formed the mixture is at least a portion of the added free Water is removed again.
- the mixture may preferably initially to a predetermined residual moisture of about 0.1 mass .-% are dried. Let that way the cycle times for the preparation of the invention Further reduce the casting mold or the casting core by the Total amount of added water can be reduced.
- the dried to a predetermined residual moisture Formstoffmischung well storable and by the re-addition of water easily processable.
- the casting mold or the casting core after the Shaping appropriate to a residual moisture content of about 0.01 wt .-% based on the particulate material dried.
- Composition A A:
- Composition B is a composition of Composition B:
- composition A For the preparation of the casting core according to composition A was dry mixed with the molding sand of the binder.
- the casting core according to composition B became the second Binder component in dissolved form homogeneous with the molding sand mixed and the mixture then the first binder component mixed dry. Subsequently, each about 1.4 Mass .-% water based on the foundry sand added.
- the Molding compound mixture was injected in each case in a core box and to a residual moisture content of about 0.01 mass% dried.
- the casting cores produced in this way were different Service life t on their flexural strength ⁇ examined.
- the flexural strength of the casting core can be improved by the Addition of only small amounts (0.1% by mass based on the Molding sand) of polyvinylamine are practically doubled.
- Composition B according to Example 1 (molding sand, 2% by mass of sodium polyphosphate (binder component 1), 0.1% by mass of liquid polyvinylamine (binder component 2) and 1.4% by mass of moisture, based in each case on the molding sand) was used Increasing the temperature resistance additionally added sodium carbonate (Na 2 CO 3 ) as an additive. Casting cores were produced from the resultant molding material mixture in the manner described above and these were examined for their bending strength ⁇ after various service lives t.
- the example shows that the bending strength of the casting core is not impaired by the addition of Na 2 CO 3 .
- the addition of Na 2 CO 3 gives the casting core a significantly better temperature resistance, so that it is suitable for example for the production of aluminum castings with a casting temperature of about 800 ° C, with deformations of the casting core during the casting process safely and reliably avoided.
- the addition of Na 2 CO 3 increases the water solubility of the foundry core, thus facilitating gutting of the finished casting.
- the example makes it clear that the molding material mixture a good storability identifies and still several hours dried after the mixing process to form the casting core can be.
- polyethylenimines A, B
- polyethylenimines A, B
- polyethyleneimines with a molecular weight of about 2000 g / mol (A) or 750,000 g / mol (B).
- polyvinylamines (C, D, E) used with a molecular weight of about 400,000 g / mol, which is due to the proportion of free amino groups differ, which in turn corresponds to the degree of hydrolysis.
- the polyvinylamine (C) has the highest degree of hydrolysis, the polyvinylamine (E) a lower contrast Degree of hydrolysis and the polyvinylamine (D) the lowest Degree of hydrolysis of polyvinylamines (C, D, E).
- the production of the cores was done according to the example 1 described method. Then they were like that produced casting cores after different service lives t examined for their bending strength ⁇ .
- the molding material mixtures were injected into a core box after different storage times t 1 of 0, 1, 2 and 3 h and dried.
- the best values for the flexural strength of the casting core were obtained after a storage time t 1 of the molding material mixture of one hour, the mixture also being obtained immediately or at least three hours after mixing the but slightly poorer flexural strength Single component was processable, so that also here a good shelf life was found.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Mold Materials And Core Materials (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- External Artificial Organs (AREA)
Description
- Fig. 1
- ein Diagramm zur Veranschaulichung der Biegefestigkeit σ eines Gießkerns mit einem Natriumpolyphosphatbinder ohne Zusatz von Polyaminen (A) und mit Zusatz von 0,1 Mass.-% Polyvinylamin (B) zu verschiedenen Standzeiten t;
- Fig. 2
- ein Vergleichsdiagramm zur Veranschaulichung der Biegefestigkeit σ eines Gießkerns mit einem Binder ausschließlich aus Polyvinylamin zu verschiedenen Standzeiten t;
- Fig. 3
- ein Diagramm zur Veranschaulichung der Biegefestigkeit σ eines Gießkerns der Zusammensetzung (B) gemäß Fig. 1, welcher zusätzlich einen Zuschlagstoff in Form von Natriumcarbonat enthält, zu verschiedenen Standzeiten t;
- Fig. 4
- ein Diagramm zur Veranschaulichung der Biegefestigkeit σ eines Gießkerns der Zusammensetzung gemäß Fig. 3 nach verschiedenen Lagerzeiten t1 der Formstoffmischung und nach verschiedenen Standzeiten t2;
- Fig. 5
- ein Diagramm zur Veranschaulichung der Biegefestigkeit σ je eines Gießkerns mit einem Binder aus Natriumpolyphosphat und verschiedenen Polyaminen mit unterschiedlicher Aminogruppendichte (A, B, C, D, E) zu verschiedenen Standzeiten t und
- Fig. 6
- ein Diagramm zur Veranschaulichung der Biegefestigkeit σ je eines Gießkerns mit den Zusammensetzungen (A, B, C, D, E) gemäß Fig. 5 nach verschiedenen Lagerzeiten t1 der Formstoffmischung und nach verschiedenen Standzeiten t2.
- Formsand,
- 2 Mass.-% Natriumpolyphosphat bezogen auf den Formsand (Binder),
- 1,4 Mass.-% Feuchtigkeit bezogen auf den Formsand;
- Formsand,
- 2 Mass.-% Natriumpolyphosphat (Binderkomponente 1) bezogen auf den Formsand
- 0,1 Mass.-% flüssiges Polyvinylamin (Binderkomponente 2) bezogen auf den Formsand,
- 1,4 Mass.-% Feuchtigkeit bezogen auf den Formsand.
- Formsand,
- 2 Mass.-% Natriumpolyphosphat bezogen auf den Formsand,
- 0,1 Mass.-% eines Polyamins bezogen auf den Formsand,
- 1,4 Mass.-% Feuchtigkeit.
Claims (36)
- Wasserdispergierbare Gießform, insbesondere Gießkern, zur Herstellung von Gussstücken, enthaltendein wasserunlösliches, partikelförmiges Material, insbesondere Formsand;einen Binder, welcher als eine erste Binderkomponente wenigstens ein kondensiertes Phosphat aufweist,
- Gießform nach Anspruch 1, dadurch gekennzeichnet, dass das Polyamin aus der Gruppe der polymeren Polyamine gewählt ist.
- Gießform nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Polyamin aus der Gruppe der Polyethylenimine, Polyvinylamine und/oder deren Copolymere gewählt ist.
- Gießform nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass das Polyamin einen Stickstoffanteil zwischen 1 und 35 Mass.-% N/Polymereinheit aufweist.
- Gießform nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass das Polyamin einen Stickstoffanteil zwischen 10 und 33 Mass.-% N/Polymereinheit aufweist.
- Gießform nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass das Polyamin einen Stickstoffanteil zwischen 20 und 33 Mass.-% N/Polymereinheit aufweist.
- Gießform nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass zwischen 0,001 und 1 Mass.-% Polyamin bezogen auf das partikelförmige Material vorgesehen sind.
- Gießform nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass zwischen 0,005 und 0,5 Mass.-% Polyamin bezogen auf das partikelförmige Material vorgesehen sind.
- Gießform nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die erste Binderkomponente ein Polyphosphat enthält oder gänzlich hieraus besteht.
- Gießform nach Anspruch 9, dadurch gekennzeichnet, dass das Polyphosphat ein Alkalimetallpolyphosphat, insbesondere Natriumpolyphosphat, ist.
- Gießform nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die erste Binderkomponente ein Metaphosphat enthält oder gänzlich hieraus besteht.
- Gießform nach Anspruch 11, dadurch gekennzeichnet, dass das Metaphosphat ein Alkalimetallmetaphosphat, insbesondere Natriummetaphosphat, ist.
- Gießform nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die erste Binderkomponente ein Poly- und/oder Metaphosphatketten enthaltendes, wasserlösliches Phosphatglas enthält oder gänzlich hieraus besteht.
- Gießform nach Anspruch 13, dadurch gekennzeichnet, dass das Phosphatglas zwischen 58 und 75 Mass.-% Phosphorpentoxid (P2O5) und zwischen 25 und 42 Mass.-% Alkalimetalloxid, insbesondere Natriumoxid (Na2O), aufweist.
- Gießform nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass zwischen 0,25 und 25 Mass.-% der ersten Binderkomponente bezogen auf das partikelförmige Material vorgesehen sind.
- Gießform nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, dass zwischen 0,5 und 10 Mass.-% der ersten Binderkomponente bezogen auf das partikelförmige Material vorgesehen sind.
- Gießform nach einem der Ansprüche 1 bis 16, gekennzeichnet durch mindestens einen Zuschlagstoff, vorzugsweise in Form von Sulfaten, Carbonaten und/oder Nitraten aus der Gruppe der Alkalimetalle und/oder Erdalkalimetalle, wie Alkalimetallcarbonate, insbesondere Natriumcarbonat (Na2CO3).
- Gießform nach Anspruch 17, dadurch gekennzeichnet, dass zwischen 20 und 90 Mass.-% Alkalimetallcarbonat bezogen auf die erste Binderkomponente vorgesehen sind.
- Gießform nach Anspruch 17 oder 18, dadurch gekennzeichnet, dass zwischen 30 und 85 Mass.-% Alkalimetallcarbonat bezogen auf die erste Binderkomponente vorgesehen sind.
- Gießform nach einem der Ansprüche 1 bis 19, gekennzeichnet durch einen Feuchtigkeitsanteil der Formstoffmischung zwischen 0,01 und 35 Mass.-% bezogen auf das partikelförmige Material.
- Gießform nach Anspruch 20, dadurch gekennzeichnet, dass der Feuchtigkeitsanteil der Formstoffmischung zwischen 0,1 und 5 Mass.-% bezogen auf das partikelförmige Material beträgt.
- Verfahren zur Herstellung einer wasserdispergierbaren Gießform, insbesondere Gießkern, zur Herstellung von Gussstücken, indem ein wasserunlösliches, partikelförmiges Material, insbesondere Formsand, mit einem Binder, welcher als eine erste Binderkomponente wenigstens ein kondensiertes Phosphat aufweist, unter Zugabe von Wasser gemischt, die Mischung geformt und zumindest ein Teil des zugesetzten freien Wassers entfernt wird, dadurch gekennzeichnet, dass eine zweite Bindetkomponente auf der Basis wenigstens eines Polyamins zugesetzt wird.
- Verfahren nach Anspruch 22, dadurch gekennzeichnet, dass ein Polyamin nach einem der Ansprüche 2 bis 6 eingesetzt wird.
- Verfahren nach Anspruch 22 oder 23, dadurch gekennzeichnet, dass das Polyamin in einer Menge zwischen 0,001 und 1 Mass.-%, insbesondere zwischen 0,005 und 0,5 Mass.-%, bezogen auf das partikelförmige Material eingesetzt wird.
- Verfahren nach einem der Ansprüche 22 bis 24, dadurch gekennzeichnet, dass eine erste Binderkomponente nach einem der Ansprüche 9 bis 14 eingesetzt wird.
- Verfahren nach einem der Ansprüche 22 bis 25, dadurch gekennzeichnet, dass die erste Binderkomponente in einer Menge zwischen 0,25 und 25 Mass.-%, insbesondere zwischen 0,5 und 10 Mass.-%, bezogen auf das partikelförmige Material eingesetzt wird.
- Verfahren nach einem der Ansprüche 22 bis 26, dadurch gekennzeichnet, dass mindestens ein Zuschlagstoff vorzugsweise Form von Sulfaten, Carbonaten und/oder Nitraten aus der Gruppe der Alkalimetalle und/oder Erdalkalimetalle, wie Alkalimetallcarbonate, insbesondere Natriumcarbonat (Na2CO3), eingesetzt wird.
- Verfahren nach Anspruch 27, dadurch gekennzeichnet, dass das Alkalimetallcarbonat in einer Menge zwischen 20 und 90 Mass.-%, insbesondere zwischen 30 und 85 Mass.-%, bezogen auf die erste Binderkomponente eingesetzt wird.
- Verfahren nach einem der Ansprüche 22 bis 28, dadurch gekennzeichnet, dass die zweite Binderkomponente in flüssiger Form mit dem partikelförmigen Material in Kontakt gebracht und sodann die erste Binderkomponente in trockener Form beigemischt wird, wobei der Mischung Wasser zugesetzt wird.
- Verfahren nach Anspruch 27, dadurch gekennzeichnet, dass der Zuschlagstoff in Wasser gelöst und die Lösung der Mischung zugesetzt wird.
- Verfahren nach einem der Ansprüche 22 bis 28, dadurch gekennzeichnet, dass die erste Binderkomponente trocken mit dem partikelförmigen Material gemischt und sodann eine wässrige Lösung mit der zweiten Binderkomponente zugesetzt wird.
- Verfahren nach Anspruch 31, dadurch gekennzeichnet, dass ein Zuschlagstoff vor dem Zusetzen der Lösung in dieser gelöst wird.
- Verfahren nach Anspruch 27 oder 28, dadurch gekennzeichnet, dass alle Binderkomponenten und gegebenenfalls ein Zuschlagstoff in Wasser gelöst werden und die Lösung mit dem partikelförmigen Material in Kontakt gebracht wird.
- Verfahren nach einem der Ansprüche 22 bis 33, dadurch gekennzeichnet, dass bis zu 35 Mass.-% Wasser bezogen auf das partikelförmige Material zugesetzt werden.
- Verfahren nach einem der Ansprüche 22 bis 34, dadurch gekennzeichnet, dass die Mischung zunächst bis auf eine vorgegebene Restfeuchte getrocknet, der Mischung sodann wieder Wasser zugesetzt und die Mischung geformt wird, wobei zumindest ein Teil des zugesetzten freien Wassers wieder entfernt wird.
- Verfahren nach Anspruch 35, dadurch gekennzeichnet, dass die Mischung zunächst bis auf eine vorgegebene Restfeuchte von etwa 0,1 Mass.-% getrocknet wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10226817 | 2002-06-15 | ||
DE10226817A DE10226817C1 (de) | 2002-06-15 | 2002-06-15 | Giessform und Verfahren zu deren Herstellung |
PCT/EP2003/004802 WO2003106071A1 (de) | 2002-06-15 | 2003-05-08 | Giessform und verfahren zu deren herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1417060A1 EP1417060A1 (de) | 2004-05-12 |
EP1417060B1 true EP1417060B1 (de) | 2005-08-03 |
Family
ID=29225180
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03740129A Expired - Lifetime EP1417060B1 (de) | 2002-06-15 | 2003-05-08 | Giessform und verfahren zu deren herstellung |
Country Status (7)
Country | Link |
---|---|
US (1) | US20040238156A1 (de) |
EP (1) | EP1417060B1 (de) |
AT (1) | ATE301013T1 (de) |
AU (1) | AU2003276882A1 (de) |
DE (2) | DE10226817C1 (de) |
MX (1) | MXPA04001282A (de) |
WO (1) | WO2003106071A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005024524A1 (de) * | 2005-03-08 | 2006-09-14 | Meg Binder Technologien Gmbh & Co. Kg | Form und Verfahren zu deren Herstellung |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005051439B4 (de) * | 2004-11-05 | 2014-11-27 | Bayerische Motoren Werke Aktiengesellschaft | Anwendung eines wasserdispergierbaren Stützkerns zur Herstellung eines Strukturhohlbauteils |
US20160158829A1 (en) * | 2014-12-05 | 2016-06-09 | Hyundai Motor Company | Core composition for casting, and method for preparing core for casting using the same |
DE102015223008A1 (de) * | 2015-11-21 | 2017-05-24 | H2K Minerals Gmbh | Form, Verfahren zu ihrer Herstellung und Verwendung |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4078599A (en) * | 1976-07-26 | 1978-03-14 | National Research Institute For Metals | Self-curing and water-soluble mold |
GB9022754D0 (en) * | 1990-10-19 | 1990-12-05 | Pilkington Controlled Release | Improvements in or relating to water dispersible moulds |
GB9226815D0 (en) * | 1992-12-23 | 1993-02-17 | Borden Uk Ltd | Improvements in or relating to water dispersible moulds |
DE19549469C2 (de) * | 1995-07-12 | 1999-05-12 | Eichenauer Gmbh & Co Kg F | Gießkern zum Gießformen und Verfahren zum Herstellen eines solchen Gießkerns |
DE19525307C2 (de) * | 1995-07-12 | 2003-04-03 | Eichenauer Gmbh & Co Kg F | Formmasse zur Herstellung von Gießkernen und Verfahren zur Herstellung eines Gießkerns |
US5908889A (en) * | 1997-12-03 | 1999-06-01 | Nalco Chemical Company | Polyamide binders for ceramics manufacture |
DE10022008B4 (de) * | 2000-05-05 | 2004-12-09 | Agrolinz Melamin Gmbh | Formmassen aus Holzpartikeln und Duroplast-Prepolymeren sowie ein Verfahren zu deren Herstellung |
-
2002
- 2002-06-15 DE DE10226817A patent/DE10226817C1/de not_active Expired - Fee Related
-
2003
- 2003-05-08 DE DE50300900T patent/DE50300900D1/de not_active Expired - Lifetime
- 2003-05-08 WO PCT/EP2003/004802 patent/WO2003106071A1/de not_active Application Discontinuation
- 2003-05-08 MX MXPA04001282A patent/MXPA04001282A/es active IP Right Grant
- 2003-05-08 AU AU2003276882A patent/AU2003276882A1/en not_active Abandoned
- 2003-05-08 AT AT03740129T patent/ATE301013T1/de active
- 2003-05-08 US US10/486,656 patent/US20040238156A1/en not_active Abandoned
- 2003-05-08 EP EP03740129A patent/EP1417060B1/de not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005024524A1 (de) * | 2005-03-08 | 2006-09-14 | Meg Binder Technologien Gmbh & Co. Kg | Form und Verfahren zu deren Herstellung |
DE102005024524B4 (de) * | 2005-03-08 | 2006-12-07 | Meg Binder Technologien Gmbh & Co. Kg | Form und Verfahren zu deren Herstellung |
Also Published As
Publication number | Publication date |
---|---|
WO2003106071A1 (de) | 2003-12-24 |
EP1417060A1 (de) | 2004-05-12 |
DE50300900D1 (de) | 2005-09-08 |
DE10226817C1 (de) | 2003-11-13 |
AU2003276882A1 (en) | 2003-12-31 |
ATE301013T1 (de) | 2005-08-15 |
AU2003276882A8 (en) | 2003-12-31 |
US20040238156A1 (en) | 2004-12-02 |
MXPA04001282A (es) | 2004-05-27 |
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