EP1832357B1 - Forme ou pièce brute, mélange de matériaux de formage de fonderie et son procédé de fabrication - Google Patents

Forme ou pièce brute, mélange de matériaux de formage de fonderie et son procédé de fabrication Download PDF

Info

Publication number
EP1832357B1
EP1832357B1 EP07004766A EP07004766A EP1832357B1 EP 1832357 B1 EP1832357 B1 EP 1832357B1 EP 07004766 A EP07004766 A EP 07004766A EP 07004766 A EP07004766 A EP 07004766A EP 1832357 B1 EP1832357 B1 EP 1832357B1
Authority
EP
European Patent Office
Prior art keywords
sand
binder
aluminium oxide
moulding
binding agent
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.)
Not-in-force
Application number
EP07004766A
Other languages
German (de)
English (en)
Other versions
EP1832357A1 (fr
Inventor
Martin Weith
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.)
LKAB Minerals GmbH
Original Assignee
Minelco 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 Minelco GmbH filed Critical Minelco GmbH
Priority to PL07004766T priority Critical patent/PL1832357T3/pl
Priority to SI200730240T priority patent/SI1832357T1/sl
Publication of EP1832357A1 publication Critical patent/EP1832357A1/fr
Application granted granted Critical
Publication of EP1832357B1 publication Critical patent/EP1832357B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
    • B22D29/001—Removing cores
    • B22D29/002—Removing cores by leaching, washing or dissolving
    • 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
    • B22C1/186—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 contaming ammonium or metal silicates, silica sols
    • B22C1/188—Alkali metal silicates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/12—Treating moulds or cores, e.g. drying, hardening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
    • B22D29/001—Removing cores
    • B22D29/005—Removing cores by vibrating or hammering

Definitions

  • the invention relates to molds or foundries for foundry purposes according to the preamble of patent claim 1, a foundry molding material mixture according to the preamble of claim 4 and a method for producing a mold or a molding according to the preamble of claim. 7
  • Foundry-molding mixtures are known in many forms. Basically, a distinction must be made between clay-bound foundry sand, sand mixtures with inorganic or organic binders, and binderless molding sands with physical bonding.
  • the requirements of the foundry-molding mixtures are very diverse and include properties such as flowability of the molding material mixture, solidification behavior, achievable ultimate strength, separability or mold release.
  • WO 2006/024540 describes a molding material mixture for the production of casting molds for metal processing, in which a free-flowing, refractory molding base material and a water glass-based binder is used.
  • a particulate metal oxide selected from a group consisting of silica, alumina, titania or zinc oxide, most preferably synthetic amorphous silica.
  • Molded materials of spherical shape and / or organic additives are used to improve the surface quality of the casting.
  • the strength of the molded article in a moist environment should be improved by intensively combining the surface of the particulate metal oxide with a strongly alkaline water glass phase in the binder. Since the binder has a deteriorated flowability, it should be achieved by addition of platelet-shaped lubricants that even complex shapes can be produced.
  • the particle size of the metal oxide is less than 200 micrometers in the known molding material mixture, wherein the proportion of metal oxide, based on the amount of binder is preferably between 4 and 40%.
  • quartz sand as a molding material is preferably less than 5% binder contained in the known molding material mixture.
  • the invention has for its object to provide a molding material mixture having an improved flowability, wherein the solidification behavior and the mold release of the mold or molded article is improved.
  • the castings produced with the molding or the molding material mixture according to the invention should allow an improved quality of the surface of the cast part.
  • the molding material mixture should have good disintegration properties after the intended use and the spent molding sand can be easily processed with low emission.
  • aluminum oxide is suitable as a supplement to a foundry-molding material mixture if, after mixing and drying, it covers the sand or quartz particles of the molding material as an opaque layer.
  • the alumina in a certain amount based on the binder and in a certain particle size based on the average diameter of the sand or quartz grains to use.
  • alumina significantly improves the flowability and the solidification behavior of the molding material mixture. This will be explained in more detail by means of subsequent comparative experiments. Furthermore, it was surprising that the molding / core or the mold had particularly good disintegration properties after their intended use. For example, it has been observed that the core contacted with water immediately disintegrates and can be fully processed as a homogeneous suspension.
  • the inventors have then specifically investigated the conditions during casting in the contact area between molding sand and metal surface. It has been found that the wettability of the molding surface with the liquid metal plays a role on the one hand in the described processes, on the other hand, however opposite effect was observed during demolding or reprocessing of the molding sand. Thus, for a faithful reproduction, good wetting conditions are important; on the other hand, this sometimes leads to problems during demoulding, since with the removal of the casting, parts of the mold or of the molded article are also entrained in the form of fine sand particles. In particular, in a poor wetting behavior of the molding sand already in the state of mixing with the partially liquid binder adverse effects that led to poor reusability of the spent molding material mixture (segregation, inhomogeneities, etc.).
  • an aluminum oxide with 99.9% purity was first added directly to a molding material mixture as an oxide and homogeneously distributed. It was found that homogenous distributions in common molding sands with mean particle sizes between 75 and 250 micrometers could only be obtained by repeated and lengthy mixing processes. In order to be able to effectively use above all established systems, which are designed for the use of liquid binders in the form of resins, alcohols, oils or inorganic suspensions, the oxide was first added to the binder, homogeneously dispersed and then added to the molding material via established methods.
  • Flowability relates to the flow behavior of the molding material mixture while it is being filled into the mold. It is influenced by the cohesion of the molding material mixture components with each other and the adhesion of the molding material to the wall of the mold. Particularly in the field of dry molding mixtures, in which the ratio of foundry sand to binders and aggregates can be in the range of 3 to 1 - 2, the properties of the aggregates are clearly evident.
  • Dry sand trials showed breakage of the mold during withdrawal of the cylinder.
  • the cylinder then accelerated upward without resistance and triggered the timing t1.
  • the alumina causes at a high content of the total mixture earlier breaking of the molding and a flatter angle of the cone flanks.
  • the additionally added water glass binder enhances the cohesive forces between the particles of the molding material mixture.
  • the breaking up of the molding occurred at comparable height of exposed form. This means that the significantly lower value for t1 and t2 can be explained by a higher take-off speed and a reduced adhesion to the mold wall with an aluminum oxide content of 40%.
  • the solidification behavior describes the ability of a molding mixture to fill a mold while arranging its particles in the closest possible way. Separability or releasability relates to the interactions between the molding material mixture and the mold. If too strong adhesion forces occur, parts of the molding can adhere to the mold during demoulding and break out of the molding.
  • a foundry sand binder mixture with a binder content of 2.5% and a varied alumina content of 10% and 40% and 80% in the binder (percent by weight based on the binder) was injected via a core shooter into a mold until sufficient green strength pre-dried and removed. After examination of the green compacts for defects, these microwaves were completely dried ready-to-use moldings and finally examined.
  • the blend without additive shows the occurrence of defects in the fine profiling during drying, while this is not the case with the mixtures according to the invention.
  • In the drying behavior of the mixture according to the invention shows a better resistance of the molding material mixture against thermal effects.
  • molding mixtures according to the invention based on quartz sand were prepared according to Table 3 and dried under different conditions and tested for their profile fidelity.
  • the improved resistance to thermal effects was confirmed.
  • the inventors assume that the free spaces in the molding material mixture, due to the Al 2 O 3 particles which space the quartz sand grains apart, allow the unhindered transfer of the solvent into the gas phase during drying.
  • a dried in a drying oven at 60 ° C within 48 hours molding had too high final weight and showed in the microscopic examination bulky, coated with a glassy layer throughout binder bridges and had clearly set during drying.
  • a test series with varied oxide content in the binder showed that with oxide contents from 10%, oxide particle coverage could be observed, while at 80% to 90%, the increasing concentration in the total mixture resulted in more and more particle-coated sand grains. Preference was given to working with contents of 40% to 60%, particularly preferably 50% of oxide.
  • the castings produced showed a significantly smoother surface compared to the standard castings after demoulding.
  • the number of average adherent grains per square centimeter dropped from 47 to 49 to 0.4 to 0.5.
  • the adhesion force of the individual grains to the metal surface was extremely low, so that cleaning could be carried out by means of compressed air or ultrasound instead of the usual sandblasting. This opens up the possibility of the final cleaning of the castings with methods such.
  • the fine profiles were formed exactly in the manner specified in the molding.
  • the barking out time for binders based on water glass was additionally lowered. This can be explained by an additional weakening of the adhesion-promoting phase of the binder bridges by dissolving with water.
  • the coring time was found to be 20% lower compared to industrial products of the same particle size distribution.
  • the improved barking out time for freshly ground Al 2 O 3 particles is attributed to a reduced adhesive force of the binder on the fresh fracture surfaces of the particles and a more easily detachable framework from the irregularly comminuted particles:
  • milled oxides oxides which have been adjusted in their morphology by grinding, crushing, crushing, blasting, impact milling, vibratory milling, etc., during production are referred to as milled oxides. It was found that even with ground aluminum oxides with a purity of 90%, the advantages according to the invention could be achieved.
  • the finely ground aluminum oxides especially in the limits of 100-200 microns, preferably immediately after the grinding must be added to the binder and used, otherwise there is a risk of dissolution or aluminate formation in the case of prolonged storage.
  • the aluminate formation takes place by direct transition of the aluminum from the oxidic surface into the solution in the form of a negatively charged complex.
  • the aluminum is kept in solution in the complex, spreads by diffusion, and tends to agglomerate and flocculate with longer residence time of the solution. This is especially at elevated temperatures as they can occur anywhere in foundry.
  • the agglomeration and flocculation causes inhomogeneously altered Flow properties of the binder and makes use of the binder mixture impossible.
  • the foundry molding material mixture according to the invention consists of molding sand, binder, aggregates and aluminum oxide as an emulsion-free and thus emission-free additive. It results in improved flowability and resistance to thermal effects of the molding material mixture, a significantly reduced number of adhering grains on the finished casting, a reduced adhesive force of the adhering grains on the casting and a significantly reduced coring time.
  • the inventive method for producing a foundry molding mixture provides that the alumina with a purity of> 90% and a particle size of 1-200 microns is added directly to the binder and processed.
  • the proportion may be between 10 and 85%, based on the amount of binder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Claims (13)

  1. Forme ou pièce brute pour utilisation en fonderie, comprenant de la potée, de liants et d'agrégats, en utilisant de la silice comme potée et de l'oxyde d'aluminium dans le liant, caractérisée en ce que la silice est utilisée avec une taille du grain entre 0,05 et 5 mm et comme agrégat on utilise l'oxyde d'aluminium avec une taille du grain entre 1 et 200 micromètres, en ayant l'oxyde d'aluminium de surfaces de rupture ou de bordures de rupture et en étant le liant contenant l'oxyde d'aluminium aligné comme couche couvrant sur la surface de la silice, et caractérisée en ce que une verre soluble contenue dans le liant est contractée sur les surfaces de contact des graines de silice sous forme de gousset, et en ayant une structure microporeuse dans les phases de limitation sous forme de ponts poreux de liaison, en étant le liant et la silice connectés l'un avec l'autre par les surfaces de rupture et / ou par les bordures de rupture des particules en oxyde d'aluminium dans la structure de la pièce brute en formant de ponts de liaison microporeux.
  2. Forme ou pièce brute selon revendication 1, caractérisée en ce que on utilise un oxyde d'aluminium rompu et / ou pulvérisé dont la taille du grain est entre 1 et 100 im.
  3. Forme ou pièce brute selon une des revendications précédentes, caractérisée en ce que la taille de pores de la structure microporeuse est entre 0,1 et 2,5 im.
  4. Mixture de matière formant pour fonderie pour la production d'une forme ou d'une pièce brute selon une des revendications précédentes, étant constituée de silice, de liant et d'agrégats, caractérisée en ce que les agrégats sont constitués d'oxyde d'aluminium récemment rompu ou pulvérisé sans contenu d'émulsion dans une quantité > 10 % par rapport au contenu du liant, caractérisée en ce que l'oxyde d'aluminium avec une taille du grain entre 1 et 200 micromètres est contenu dans le liant avec une quantité entre les 10 et les 65 %, en étant contenu un liant sur la base de verre soluble avec un contenu de liant entre les 1 et les 10 % dans une mixture de matière formant et caractérisée en ce que comme sable formant on utilise la silice avec une taille du grain entre 0,05 et 5 mm.
  5. Mixture de matière formant pour fonderie pour la production d'une forme ou d'une pièce brute selon une des revendications précédentes, caractérisée en ce que l'agrégat d'oxyde d'aluminium est un oxyde d'aluminium du type alpha.
  6. Mixture de matière formant pour fonderie pour la production d'une forme ou d'une pièce brute selon une des revendications précédentes, caractérisée en ce que l'oxyde d'aluminium est un oxyde d'aluminium pur ayant un degré de pureté supérieur aux 90 %.
  7. Procédée pour la production d'une forme ou d'une pièce brute, en utilisant une mixture de matière formant pour fonderie, constituée de sable formant, de liants et d'agrégats, caractérisée en ce que comme sable formant on utilise de la silice avec une taille de grain entre 0,05 et 5 mm, caractérisée en ce que comme agrégat on ajoute de l'oxyde d'aluminium pulvérisé frais, ayant une taille du grain entre 1 et 200 micromètres, dans une quantité entre les 10 et les 85 % du poids du liant pour le mélanger de manière homogène avec le liant, caractérisée en ce que on mélange la mixture d'oxyde et le liant avec le sable formant, en fermant la mixture dans un armoire de forme pour la solidifier, en maintenant la relation de mixture du liant / oxyde et du sable formant dans un rapport de 1 - 10 jusqu'à 90 et en exécutant le séchage du liant liquide en telle façon que on produit de ponts de liaison poreux entre les graines du quartz.
  8. Procédée selon une de revendications précédentes, caractérisée en ce que l'oxyde d'aluminium est pulvérisé ou rompu avec une taille du grain de départ de > 200 im pour achever une taille du grain < 100 im et que le produit pulvérisé est mélangé au début avec le liant avec un PH > 10 en obtenant les surfaces de rupture et les bordures de rupture produites et puis avec le sable formant entre 1 et 10 seconds.
  9. Procédée selon une de revendications précédentes, caractérisée en ce que la mixture additionnelle de l'oxyde d'aluminium pulvérisé est exécutée avec un liant liquide, en achevant une partie de la mixture entre le liant et l'oxyde de 1,5-4 pourcent du poids de la mixture complète.
  10. Procédée pour la production d'un produit fondu en utilisant une forme ou une pièce brute selon une de revendications précédentes, caractérisée en ce que pour le dénoyautage du produit fondu on utilise une oscillation de fréquence basse pour une durée maximale de 10 seconds.
  11. Procédée selon une de revendications précédentes, caractérisée en ce que les produits fondus finis en fin sont libérés des grains du sable adhérents par un traitement ultrasonique.
  12. Procédée selon une de revendications 9 à 10, caractérisée en ce que la forme ou la pièce brute est décomposée en ajoutant de l'eau à ses composants.
  13. Procédée selon une de revendications 9 à 11, caractérisée en ce que la décomposition est exécutée dans un milieu humide jusqu'à qu'on achève la taille du graine primaire, en étant la durée de traitement depuis le début de l'ajoute de l'humidité jusqu'à la décomposition complète inférieure à 1 second.
EP07004766A 2006-03-10 2007-03-08 Forme ou pièce brute, mélange de matériaux de formage de fonderie et son procédé de fabrication Not-in-force EP1832357B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL07004766T PL1832357T3 (pl) 2006-03-10 2007-03-08 Forma lub półwyrób, odlewnicza mieszanina materiałów formierskich i sposób ich wytwarzania
SI200730240T SI1832357T1 (sl) 2006-03-10 2007-03-08 Kalup ali surovec, zmes materiala za ulivanje v livarni in postopek za njegovo izdelavo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006011530A DE102006011530A1 (de) 2006-03-10 2006-03-10 Form oder Formling, Gießerei-Formstoffgemisch und Verfahren zu seiner Herstellung

Publications (2)

Publication Number Publication Date
EP1832357A1 EP1832357A1 (fr) 2007-09-12
EP1832357B1 true EP1832357B1 (fr) 2010-03-10

Family

ID=38198259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07004766A Not-in-force EP1832357B1 (fr) 2006-03-10 2007-03-08 Forme ou pièce brute, mélange de matériaux de formage de fonderie et son procédé de fabrication

Country Status (7)

Country Link
EP (1) EP1832357B1 (fr)
AT (1) ATE460243T1 (fr)
DE (2) DE102006011530A1 (fr)
ES (1) ES2342733T3 (fr)
PL (1) PL1832357T3 (fr)
SI (1) SI1832357T1 (fr)
WO (1) WO2007104469A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007012660B4 (de) * 2007-03-16 2009-09-24 Chemex Gmbh Kern-Hülle-Partikel zur Verwendung als Füllstoff für Speisermassen
DE102014004914A1 (de) * 2013-08-26 2015-02-26 Gebrüder Dorfner GmbH & Co. Kaolin- und Kristallquarzsand-Werke KG Gießform oder einen Gießformkern aus beschichtetem Formsand für Metallguss

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT8024122A0 (it) * 1979-08-20 1980-08-12 Gen Electric Forme di fonderia, composizioni di trattamento e relativi metodi di preparazione.
SU1163958A1 (ru) * 1982-10-22 1985-06-30 Институт проблем литья АН УССР Состав дл изготовлени литейный форм и стержней
JPH0613137B2 (ja) * 1989-06-30 1994-02-23 岡崎鑛産物株式会社 鋳型材
JPH0663683A (ja) * 1992-08-18 1994-03-08 Mitsubishi Heavy Ind Ltd 鋳型の製造方法
US6371194B1 (en) * 1996-08-09 2002-04-16 Vaw Aluminium Ag Method for producing core preforms and recycling core sand for a foundry
DK172825B1 (da) * 1996-12-18 1999-08-02 Dti Ind Fremgangsmåde til fremstilling af partikler belagt med et lag af vandglas og af emner omfattende sådanne belagte partikler.
FR2791282B1 (fr) * 1999-03-23 2001-05-11 Forward Tech Industries Sa Procede de nettoyage ou de debourrage d'une piece de fonderie
DE19951622A1 (de) * 1999-10-26 2001-05-23 Vaw Ver Aluminium Werke Ag Bindemittelsystem auf Wasserglasbasis
DE10216464B4 (de) * 2002-04-12 2004-04-15 Deutsches Zentrum für Luft- und Raumfahrt e.V. Silica gebundene Kernwerkstoffe, Verfahren zu deren Herstellung und deren Verwendung
DE102004042535B4 (de) * 2004-09-02 2019-05-29 Ask Chemicals Gmbh Formstoffmischung zur Herstellung von Gießformen für die Metallverarbeitung, Verfahren und Verwendung

Also Published As

Publication number Publication date
SI1832357T1 (sl) 2010-07-30
DE102006011530A1 (de) 2007-09-13
DE502007003051D1 (de) 2010-04-22
ES2342733T3 (es) 2010-07-13
EP1832357A1 (fr) 2007-09-12
PL1832357T3 (pl) 2010-08-31
WO2007104469A1 (fr) 2007-09-20
ATE460243T1 (de) 2010-03-15

Similar Documents

Publication Publication Date Title
EP1884300B1 (fr) Matière à mouler, mélange de fonderie et de matière à mouler et procédé destiné à la fabrication d&#39;une forme et ou d&#39;une pièce brute
EP2014392B1 (fr) Mélange de matière à mouler, pièce brute pour des besoins de fonderie et procédé de fabrication d&#39;une pièce brute
EP1934001B1 (fr) Melanges de materiau moulable contenant du verre au borosilicate
EP2908968B1 (fr) Mélanges de matière à mouler à base de liant inorganique et procédé de production de moules et de noyaux pour la coulée de métaux
DE102012020510B4 (de) Formstoffmischungen auf der Basis anorganischer Bindemittel und Verfahren zur Herstellung von Formen und Kerne für den Metallguss
EP2760607B1 (fr) Matières de revêtement pour moules et noyaux inorganiques et leur utilisation, et procédé d&#39;enduisage
DE102012103705A1 (de) Verfahren zur Herstellung von Formen und Kernen für den Metallguss sowie nach diesem Verfahren hergestellte Formen und Kerne
EP2013307B1 (fr) Grain abrasif à base de corindon sphérique fondu
EP2248614B1 (fr) Dispersion, barbotine et procédé de fabrication d&#39;un moule pour la coulée de précision en utilisant la barbotine
DE102012020511A1 (de) Formstoffmischungen auf der Basis anorganischer Bindemittel und Verfahren zur Herstellung von Formen und Kerne für den Metallguss
DE102017107531A1 (de) Verfahren zur Herstellung von Gießformen, Kernen und daraus regenerierten Formgrundstoffen
DE102010043451A1 (de) Kerne auf der Basis von Salz, Verfahren zu ihrer Herstellung und deren Verwendung
EP2836318A2 (fr) Noyaux à base de sel, procédé de fabrication de ces noyaux et leur utilisation
DE102017107658A1 (de) Schlichtezusammensetzung für die Gießereiindustrie, enthaltend partikuläres, amorphes Siliziumdioxid und Säure
DE69631093T2 (de) Anorganischer, poröser träger für eine filtrationsmembran und herstellungsverfahren
DE102017107655A1 (de) Verwendung einer Säure enthaltenden Schlichtezusammensetzung in der Gießereiindustrie
EP1832357B1 (fr) Forme ou pièce brute, mélange de matériaux de formage de fonderie et son procédé de fabrication
EP2308614B1 (fr) Aérosand résistant au vert
DE112012004397T5 (de) Giesskern, Verfahren zu seiner Herstellung, und Giessverfahren unter Verwendung des Kerns
EP1433553A1 (fr) Matériau composite et procédé pour sa fabrication
EP2941327B1 (fr) Procede de fabrication d&#39;un sable pour noyaux et ou moules de fonderie
WO2021083446A1 (fr) Procédé d&#39;impression 3d et moulage produit par ce procédé à l&#39;aide de lignosulfonate
DE102005011019B4 (de) Herstellung und Verwendung eines zerstörbaren Formkerns für den metallischen Guss
DD220523A1 (de) Verfahren zur herstellung eines wasserglas-ton-formstoffes
DD290773A7 (de) Porzellanartiger sinterwerkstoff hoher festigkeit und verfahren zu seiner herstellung

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

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 MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17P Request for examination filed

Effective date: 20080207

AKX Designation fees paid

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 MT NL PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20080829

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Owner name: MINELCO GMBH

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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 MT NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 502007003051

Country of ref document: DE

Date of ref document: 20100422

Kind code of ref document: P

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2342733

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: SK

Ref legal event code: T3

Ref document number: E 7233

Country of ref document: SK

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

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: 20100310

REG Reference to a national code

Ref country code: PL

Ref legal event code: T3

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

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: 20100310

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: 20100310

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: 20100611

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: 20100310

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

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: 20100610

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: 20100710

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

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

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: 20100310

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: 20100712

26N No opposition filed

Effective date: 20101213

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

Ref country code: LT

Payment date: 20110301

Year of fee payment: 5

Ref country code: IE

Payment date: 20110322

Year of fee payment: 5

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

Ref country code: LV

Payment date: 20110322

Year of fee payment: 5

Ref country code: FR

Payment date: 20110314

Year of fee payment: 5

Ref country code: CZ

Payment date: 20110301

Year of fee payment: 5

Ref country code: SK

Payment date: 20110303

Year of fee payment: 5

Ref country code: PL

Payment date: 20110225

Year of fee payment: 5

Ref country code: SI

Payment date: 20110225

Year of fee payment: 5

Ref country code: NL

Payment date: 20110328

Year of fee payment: 5

Ref country code: SE

Payment date: 20110325

Year of fee payment: 5

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

Ref country code: GB

Payment date: 20110324

Year of fee payment: 5

Ref country code: DE

Payment date: 20110216

Year of fee payment: 5

Ref country code: ES

Payment date: 20110324

Year of fee payment: 5

Ref country code: BE

Payment date: 20110217

Year of fee payment: 5

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

Ref country code: IT

Payment date: 20110329

Year of fee payment: 5

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

Ref country code: MC

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

Effective date: 20110331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: MT

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: 20100310

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: 20110331

Ref country code: CH

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

Effective date: 20110331

BERE Be: lapsed

Owner name: MINELCO G.M.B.H.

Effective date: 20120331

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20121001

REG Reference to a national code

Ref country code: LT

Ref legal event code: MM4D

Effective date: 20120308

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

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

Ref country code: CZ

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

Effective date: 20120308

Ref country code: SE

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

Effective date: 20120309

Ref country code: LT

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

Effective date: 20120308

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

Effective date: 20120308

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 NON-PAYMENT OF DUE FEES

Effective date: 20120308

REG Reference to a national code

Ref country code: SK

Ref legal event code: MM4A

Ref document number: E 7233

Country of ref document: SK

Effective date: 20120308

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20121130

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502007003051

Country of ref document: DE

Effective date: 20121002

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: 20120331

Ref country code: SK

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

Effective date: 20120308

Ref country code: GB

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

Effective date: 20120308

Ref country code: IE

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

Effective date: 20120308

Ref country code: FR

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

Effective date: 20120402

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

Ref country code: SI

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

Effective date: 20120309

Ref country code: IT

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

Effective date: 20120308

REG Reference to a national code

Ref country code: SI

Ref legal event code: KO00

Effective date: 20130107

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

Ref country code: NL

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

Effective date: 20121001

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 460243

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120308

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

Ref country code: PL

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

Effective date: 20120308

Ref country code: LU

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

Effective date: 20110308

REG Reference to a national code

Ref country code: PL

Ref legal event code: LAPE

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: 20120308

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: 20100310

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20131018

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

Ref country code: ES

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

Effective date: 20120309

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

Effective date: 20100310

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

Ref country code: DE

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

Effective date: 20121002