EP1752235B1 - Process for manufacture of core or mould - Google Patents

Process for manufacture of core or mould Download PDF

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Publication number
EP1752235B1
EP1752235B1 EP05017698A EP05017698A EP1752235B1 EP 1752235 B1 EP1752235 B1 EP 1752235B1 EP 05017698 A EP05017698 A EP 05017698A EP 05017698 A EP05017698 A EP 05017698A EP 1752235 B1 EP1752235 B1 EP 1752235B1
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EP
European Patent Office
Prior art keywords
binder
core
sand
casting
molds
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
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EP05017698A
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German (de)
French (fr)
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EP1752235A1 (en
Inventor
Wolfram Seiterle
Artur Bissert
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Georg Fischer Automobilguss GmbH Germany
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Georg Fischer Automobilguss GmbH Germany
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.)
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Publication date
Priority to PT05017698T priority Critical patent/PT1752235E/en
Application filed by Georg Fischer Automobilguss GmbH Germany filed Critical Georg Fischer Automobilguss GmbH Germany
Priority to AT05017698T priority patent/ATE394185T1/en
Priority to DK05017698T priority patent/DK1752235T3/en
Priority to DE502005004015T priority patent/DE502005004015D1/en
Priority to SI200530257T priority patent/SI1752235T1/en
Priority to ES05017698T priority patent/ES2303161T3/en
Priority to EP05017698A priority patent/EP1752235B1/en
Priority to CN200680029319.0A priority patent/CN101287561B/en
Priority to AU2006281745A priority patent/AU2006281745B2/en
Priority to RU2008109321/02A priority patent/RU2442673C2/en
Priority to PCT/EP2006/004821 priority patent/WO2007019898A1/en
Priority to MX2007015598A priority patent/MX2007015598A/en
Priority to CA2617948A priority patent/CA2617948C/en
Priority to BRPI0614778-0A priority patent/BRPI0614778B1/en
Priority to JP2008525398A priority patent/JP4820413B2/en
Publication of EP1752235A1 publication Critical patent/EP1752235A1/en
Priority to ZA200711019A priority patent/ZA200711019B/en
Priority to US12/029,487 priority patent/US8058325B2/en
Application granted granted Critical
Publication of EP1752235B1 publication Critical patent/EP1752235B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B22C1/20—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 organic agents
    • B22C1/26—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 organic agents of carbohydrates; of distillation residues therefrom

Definitions

  • the invention relates to a process for the production of casting cores or molds for casting molds from a molding base material and a binder and casting cores or molds after production of the process.
  • Cast cores have the task of forming cavities in the casting or undercut outer contours.
  • This type of Giesskernen be prepared in known manner in core boxes by means of core shooting equipment, wherein the molding sand provided with binder and optionally with additives is introduced by means of compressed air into the cavities of the core molding boxes.
  • binders liquid synthetic resins or inorganic binders are generally used.
  • the invention relates to all organic and inorganic molding and core production processes, preferably to the urethane cold box process and / or the resol CO 2 process. Also conceivable are physical methods, for example ultrasonic methods.
  • the core production after the urethane cold box takes place in cold core boxes using organic binder systems, which are gas-hardened directly in the core box, for example by tertiary amines.
  • the solidification of the molding material mixture eg quartz sand, organic bonding system, hardener
  • the mixing of the individual components takes place beforehand in special facilities.
  • One advantage of this urethane cold box process is, among others, the achievement of high strengths of the cores or molds.
  • the finished cores can be used uncoated, or coated with a sizing. Finishes are refractory materials in powdery, liquid or pasty form for producing a thin coating on the casting cores.
  • the sizing has several tasks. Among others, the sizing is for thermal insulation, smoothing, preventing sticking of metal to the mold wall, blade rib formation, and thus ensuring a secure separation of the casting from the mold wall when the mold is emptied.
  • the casting cores are removed from the casting.
  • the Giesskerne are removed, for example, by blasting, vibration, blowing, knocking or washing.
  • the DE 102 27 512 A1 discloses such a process based on a mold base material comprising phenolic resin and isocyanate, wherein a pore-forming substance is added to the molding base.
  • the DE 195 49 469 A1 describes a Giesskern for casting from solidified by means of a water-soluble binder based on polyphosphates molding sand, the binder is instantiated sodium polyphosphate and that a mixing ratio of 3 to 7 parts by weight of binder and 0.5 to 2 parts by weight of water per 100 parts by weight of molding sand is given.
  • the DE 199 14 586 A1 discloses a resin-based binder for the production of foundry sands for use in the foundry industry.
  • the binder mixture for core sand production consists of a single component (single resin) or a mixture of one or more individual components (resin mixture) with additives.
  • the invention has for its object to produce unglazed cores / molds with a suitable casting surface in the core area and to extend the life of the sand in the core production. Furthermore, the closing of the sand mixer and sand funnel over the core shooting machines should be prevented.
  • the addition of commercial powdered sugar extends the life of the sand, i.
  • the sand can be processed longer, without the mechanical values of the manufactured cores taking an unfavorable course.
  • powdered sugar forms lustrous carbon during casting and thus a smooth surface in the core area.
  • Another preferred measure is the addition of dye.
  • the machinist can see if there is any additive in the core sand mixture.
  • the metering unit of the sand mixer can be monitored by the addition.
  • the binder is composed in the ratio 1: 1 of a phenolic resin and an isocyanate component, wherein both binder components are added simultaneously or sequentially in the molding material and then mixed.
  • the powdered sugar and / or the dye is mixed into the sand so that a homogeneous mixture is formed.
  • composition of the mixture of quartz sand and binder for the inventive production method 100% Parts by weight of quartz sand 0.5 - 0.8% Parts by weight of resin (for example phenolic resin) 0.5 - 0.8% Parts by weight activator (for example isocyanate) 1.0 - 2.0% Parts by weight of additive according to the invention (pore-forming substance, powdered sugar and dye-containing)
  • resin for example phenolic resin
  • activator for example isocyanate
  • the proportions by weight of resin and isocyanate can be between 0.5% and 0.8%, depending on the desired strength of the casting cores.
  • resin and isocyanate are used in equal amounts, i. H. in the ratio 1: 1 added.
  • Example of a composition of the additive according to the invention 100% porous material 1.0% -10% commercial powdered sugar with a grain size ⁇ 1 mm 1.0% - 5.0% Dye (for example Hostaperm B4G-KR or E131 Patent Blue)
  • the inventive additive is usually added in the amount of 1% to 2% by weight.

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  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Devices For Molds (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Epoxy Resins (AREA)

Abstract

Process for production of casting cores or molds from molding composition based on molding base and organic or inorganic binder with addition to the binder of a pore forming material, e.g. powderd sugar and/or similar carbon compound. The binder can be obtained with variable amounts of phenol resin and isocyanate compound, by addition of both binder components simultaneously to quartz sand with mixing.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Giesskernen oder Formen für Giessformen aus einem Formgrundstoff und einem Bindemittel und Giesskerne oder Formen nach Herstellung des Verfahrens.The invention relates to a process for the production of casting cores or molds for casting molds from a molding base material and a binder and casting cores or molds after production of the process.

Giesskerne haben die Aufgabe, Hohlräume im Gussstück oder unterschnittene Aussenkonturen zu bilden. Diese Art von Giesskernen werden auf bekannte Weise in Kernkästen mittels Kernschiessanlagen hergestellt, wobei der mit Binder und gegebenenfalls mit Additiven versehene Formsand mittels Druckluft in die Hohlräume der Kernformkästen eingeleitet wird. Als Bindemittel werden im allgemeinen flüssige Kunstharze oder anorganische Binder verwendet.Cast cores have the task of forming cavities in the casting or undercut outer contours. This type of Giesskernen be prepared in known manner in core boxes by means of core shooting equipment, wherein the molding sand provided with binder and optionally with additives is introduced by means of compressed air into the cavities of the core molding boxes. As binders, liquid synthetic resins or inorganic binders are generally used.

Die Erfindung bezieht sich auf alle organischen und anorganischen Form- und Kernherstellungsverfahren, vorzugsweise auf das Urethan-Cold-Box-Verfahren und/oder das Resol-CO2-Verfahren. Ebenso denkbar sind physikalische Verfahren, beispielsweise Ultraschallverfahren.The invention relates to all organic and inorganic molding and core production processes, preferably to the urethane cold box process and / or the resol CO 2 process. Also conceivable are physical methods, for example ultrasonic methods.

Die Kernherstellung nach dem Urethan-Cold-Box erfolgt in kalten Kernkästen unter Verwendung organischer Bindersysteme, die unmittelbar im Kernkasten beispielsweise durch tertiäre Amine gasgehärtet werden. Die Verfestigung des Formstoffgemisches (z. B. Quarzsand, organisches Bindesystem, Härter) erfolgt nach dem Füllen des Formstoffes in den kalten Kernkästen durch einen gasförmigen Katalysator oder durch ein gasförmiges tertiäres Amin. Das Vermischen der einzelnen Komponenten erfolgt zuvor in Spezialeinrichtungen. Ein Vorteil dieses Urethan-Cold-Box-Verfahrens besteht unter anderem in der Erreichung hoher Festigkeiten der Kerne oder Formen.The core production after the urethane cold box takes place in cold core boxes using organic binder systems, which are gas-hardened directly in the core box, for example by tertiary amines. The solidification of the molding material mixture (eg quartz sand, organic bonding system, hardener) takes place after filling the molding material in the cold core boxes by a gaseous catalyst or by a gaseous tertiary amine. The mixing of the individual components takes place beforehand in special facilities. One advantage of this urethane cold box process is, among others, the achievement of high strengths of the cores or molds.

Andere, z. B. sogenannte Resol-CO2-Verfahren, sind Kernherstellungsverfahren mit alkalisch kondensiertem Phenolharz als Binder, der zur Härtung mit Kohlendioxid begast wird. Der Formstoff basiert wie beim Urethan-Cold-Box-Verfahren im Allgemeinen auf dem Formgrundstoff Quarzsand. Dieses Verfahren zeichnet sich durch die Verhinderung von "Blattrippen" im Giessprozess aus. Nachteilig an diesem Begasungsverfahren sind geringere Festigkeiten, die durch erhöhte Erosion und unzureichende Thermostabilität begründet sind.Others, e.g. B. Resol-CO 2 process, are core production process with alkaline condensed phenolic resin as a binder, which is gassed for curing with carbon dioxide. As in the case of the urethane cold box process, the molding material is generally based on the molding material quartz sand. This process is characterized by the prevention of "leaf ribs" in the casting process. A disadvantage of this gassing process are lower strengths, which are due to increased erosion and insufficient thermal stability.

Die fertiggeformten Kerne können ungeschlichtet verwendet, oder mittels einer Schlichte überzogen werden. Schlichten sind feuerfeste Stoffe in pulvriger, flüssiger oder pastöser Form zur Herstellung eines dünnen Überzuges auf den Giesskernen. Die Schlichte hat mehrere Aufgaben. Unter anderen dient die Schlichte der Wärmeisolierung, der Glättung, der Verhinderung von Ankleben von Metall an der Formwand, der Blattrippenbildung und somit zur Gewährleistung einer sicheren Trennung des Gussstückes von der Formwand beim Ausleeren der Form.The finished cores can be used uncoated, or coated with a sizing. Finishes are refractory materials in powdery, liquid or pasty form for producing a thin coating on the casting cores. The sizing has several tasks. Among others, the sizing is for thermal insulation, smoothing, preventing sticking of metal to the mold wall, blade rib formation, and thus ensuring a secure separation of the casting from the mold wall when the mold is emptied.

Nach dem Giessvorgang des fertigen Gussteiles erfolgt die Entfernung der Giesskerne aus dem Gussteil. Die Giesskerne werden beispielsweise durch Strahlen, Vibrationen, Ausblasen, Klopfen oder Auswaschen entfernt.After the casting process of the finished casting, the casting cores are removed from the casting. The Giesskerne are removed, for example, by blasting, vibration, blowing, knocking or washing.

Die DE 102 27 512 A1 offenbart ein solches Verfahren, basierend auf einem aus Phenolharz und Isocyanat enthaltenden Formgrundstoff, wobei dem Formgrundstoff ein porenbildender Stoff zugegeben wird.The DE 102 27 512 A1 discloses such a process based on a mold base material comprising phenolic resin and isocyanate, wherein a pore-forming substance is added to the molding base.

Aus der DE 195 25 307 A1 ist ein Giesskern für Giessformen bekannt geworden. Es wird ein Giesskern für Giessformen aus einem mittels eines Bindemittels verfestigten Trockenstoffs vorgeschlagen, der durch Wassereinwirkung seine Form verliert.From the DE 195 25 307 A1 a casting core for casting molds has become known. It is proposed a Giesskern for molds made of a solidified by means of a binder dry matter, which loses its shape by the action of water.

Die DE 195 49 469 A1 beschreibt einen Giesskern zum Giessformen aus mittels eines wasserlöslichen Bindemittels auf der Basis von Polyphosphaten verfestigtem Formsand, wobei das Bindemittel instantiertes Natriumpolyphosphat ist und dass ein Mischungsverhältnis von 3 bis 7 Gewichtsteilen Bindemittel und 0,5 bis 2 Gewichtsteilen Wasser auf 100 Gewichtsteile teile Formsand gegeben ist.The DE 195 49 469 A1 describes a Giesskern for casting from solidified by means of a water-soluble binder based on polyphosphates molding sand, the binder is instantiated sodium polyphosphate and that a mixing ratio of 3 to 7 parts by weight of binder and 0.5 to 2 parts by weight of water per 100 parts by weight of molding sand is given.

Die DE 199 14 586 A1 offenbart ein Bindemittel auf Harzbasis zur Herstellung von Giessereisanden zur Verwendung im Giessereiwesen. Das Bindemittelgemisch zur Kernsandherstellung besteht aus einer Einzelkomponente (Einzelharz) oder einem Gemisch aus einem oder mehreren Einzelkomponenten (Harzgemisch) mit Additiven.The DE 199 14 586 A1 discloses a resin-based binder for the production of foundry sands for use in the foundry industry. The binder mixture for core sand production consists of a single component (single resin) or a mixture of one or more individual components (resin mixture) with additives.

Der Erfindung liegt die Aufgabe zugrunde, ungeschlichtete Kerne/Formen mit geeigneter Gußoberfläche im Kernbereich herzustellen und die Lebensdauer des Sandes bei der Kernherstellung zu verlängern. Weiterhin soll das Zuwachsen der Sandmischer und Sandtrichter über den Kernschiessmaschinen verhindert werden.The invention has for its object to produce unglazed cores / molds with a suitable casting surface in the core area and to extend the life of the sand in the core production. Furthermore, the closing of the sand mixer and sand funnel over the core shooting machines should be prevented.

Erfindungsgemäss wird diese Aufgabe dadurch das Verfahren des Hauptanspruchs 1 gelöst.According to the invention, this object is achieved by the method of the main claim 1.

Der Zusatz von handelsüblichem Puderzucker verlängert die Lebensdauer des Sandes, d.h. der Sand lässt sich länger verarbeiten, ohne dass die mechanischen Werte der gefertigten Kerne eine ungünstigen Verlauf nehmen.The addition of commercial powdered sugar extends the life of the sand, i. The sand can be processed longer, without the mechanical values of the manufactured cores taking an unfavorable course.

Weiterhin wird das Zuwachsen der Sandmischer und Sandtricher über den Kernschiessmaschinen verhindert. Durch die Zugabe von Puderzucker verbessert sich das Fliessverhalten beim Kernschiessen.Furthermore, the joining of sand mixers and sand traps over the core shooting machines is prevented. The addition of icing sugar improves the flow behavior during core shooting.

Weiterhin wird eine bessere Kantenschärfe und Abbildung der Kernkonturen erzielt.Furthermore, a better edge sharpness and mapping of the core contours is achieved.

Durch die Zugabe von Puderzucker bildet sich beim Abgiessen Glanzkohlenstoff und damit eine glatte Oberfläche im Kernbereich.The addition of powdered sugar forms lustrous carbon during casting and thus a smooth surface in the core area.

Als weitere bevorzugte Massnahme dient die Zugabe von Farbstoff. Der Maschinist kann daran sehen, ob in der Kernsandmischung auch Additiv vorhanden ist. Ebenso kann durch die Zugabe die Dosiereinheit des Sandmischers überwacht werden.Another preferred measure is the addition of dye. The machinist can see if there is any additive in the core sand mixture. Likewise, the metering unit of the sand mixer can be monitored by the addition.

Gemäss einer besonders bevorzugten Verfahrensgestaltung ist das Bindemittel im Verhältnis 1:1 aus einer Phenolharz- und einer Isocyanatkomponente zusammengesetzt, wobei beide Bindemittelkomponenten gleichzeitig oder nacheinander in den Formstoff gegeben und anschliessend vermischt werden.According to a particularly preferred process design, the binder is composed in the ratio 1: 1 of a phenolic resin and an isocyanate component, wherein both binder components are added simultaneously or sequentially in the molding material and then mixed.

Vorzugsweise wird dem Sand der Puderzucker und/oder der Farbstoff so eingemischt, dass eine homogene Mischung entsteht.Preferably, the powdered sugar and / or the dye is mixed into the sand so that a homogeneous mixture is formed.

Nachstehend ist ein besonders vorteilhaftes Ausführungsbeispiel für die Zusammensetzung der Mischung aus Quarzsand und Bindemittel für das erfindungsgemässe Herstellungsverfahren angegeben. 100 % Gewichtsteile Quarzsand 0,5 - 0,8 % Gewichtsteile Harz (beispielsweise Phenolharz) 0,5 - 0,8 % Gewichtsteile Aktivator (beispielsweise Isocyanat) 1,0 - 2,0 % Gewichtsanteile erfindungsgemässes Additiv (Porenbildender Stoff, Puderzucker und Farbstoff enthaltend) The following is a particularly advantageous embodiment of the composition of the mixture of quartz sand and binder for the inventive production method is given. 100% Parts by weight of quartz sand 0.5 - 0.8% Parts by weight of resin (for example phenolic resin) 0.5 - 0.8% Parts by weight activator (for example isocyanate) 1.0 - 2.0% Parts by weight of additive according to the invention (pore-forming substance, powdered sugar and dye-containing)

Die Gewichtsanteile von Harz und Isocyanat können zwischen 0,5 % und 0,8 % liegen, je nach gewünschter Festigkeit der Giesskerne. In der Regel werden Harz und Isocyanat in gleichen Mengen, d. h. im Verhältnis1:1 zugegeben.The proportions by weight of resin and isocyanate can be between 0.5% and 0.8%, depending on the desired strength of the casting cores. In general, resin and isocyanate are used in equal amounts, i. H. in the ratio 1: 1 added.

Beispiel einer Zusammensetzung des erfindungsgemässen Additivs: 100 % pornenbildender Stoff 1,0 % -10% handelsüblicher Puderzucker mit einer Körnung < 1 mm 1,0 % - 5,0 % Farbstoff (beispielsweise Hostaperm B4G-KR oder E131 Patentblau) Example of a composition of the additive according to the invention: 100% porous material 1.0% -10% commercial powdered sugar with a grain size <1 mm 1.0% - 5.0% Dye (for example Hostaperm B4G-KR or E131 Patent Blue)

Das erfindungsgemässe Additiv wird in der Regel in der Menge von 1 % bis 2 % Gewichtsanteilen zugegeben.The inventive additive is usually added in the amount of 1% to 2% by weight.

Im folgenden wird ein beispielhafter typischer Verfahrensablauf einer Giesskernherstellung beschrieben.

  • Abwiegen des Quarzsandes bzw. volumetrische Dosierung
  • Einlauf des Quarzsandes in einen Chargenmischer
  • Dosierung der Harz - und Isocyantkomponente über Dosierpumpen. Die Dosierung kann parallel oder sequenziell erfolgen
  • Die Zugabe des erfindungsgemässen Additivs erfolgt sequenziell, parallel mit der Sanddosierung in den Sandmischer
  • Die Mischzeit beträgt bis zu 200 Sekunden, je nach gewünschten Anforderungen und Mischertyp
  • Verarbeiten der feuchten Mischung auf der Kernschiessmaschine
  • Entnahme der Kerne
  • Einlegen der fertigen Kerne in die Sandform für den eigentlichen Giessvorgang
In the following, an exemplary typical process flow of casting core production will be described.
  • Weigh the quartz sand or volumetric dosage
  • Inlet of quartz sand in a batch mixer
  • Dosing of the resin and isocyanate components via dosing pumps. The dosage can be parallel or sequential
  • The addition of the additive according to the invention takes place sequentially, in parallel with the sand dosage in the sand mixer
  • The mixing time is up to 200 seconds, depending on the desired requirements and mixer type
  • Processing the wet mixture on the core shooter
  • Removal of the cores
  • Insert the finished cores into the sand mold for the actual casting process

Claims (3)

  1. Process for producing casting cores or molds from a mold material, based on mold base material and organic or inorganic binder, a pore former being added to the mold material and/or to the binder, characterized in that icing sugar with a grade of less than 1 mm is admixed to the pore former.
  2. Process according to Claim 1, characterized in that the binder is composed in a variable ratio of a phenolic resin component and an isocyanate component, the two binder components being introduced into the quartz sand simultaneously and then mixed.
  3. Process according to one of Claims 1 or 2, characterized in that the icing sugar is mixed in in such a way that a homogeneous mixture is produced.
EP05017698A 2005-08-13 2005-08-13 Process for manufacture of core or mould Active EP1752235B1 (en)

Priority Applications (17)

Application Number Priority Date Filing Date Title
AT05017698T ATE394185T1 (en) 2005-08-13 2005-08-13 METHOD FOR PRODUCING CASTING CORE OR MOLDS
DK05017698T DK1752235T3 (en) 2005-08-13 2005-08-13 Process for making casting cores or molds
DE502005004015T DE502005004015D1 (en) 2005-08-13 2005-08-13 Process for the production of Giesskernnen or forms
SI200530257T SI1752235T1 (en) 2005-08-13 2005-08-13 Process for manufacture of core or mould
ES05017698T ES2303161T3 (en) 2005-08-13 2005-08-13 PROCEDURE FOR THE PRODUCTION OF MALE OF COLADA OR MOLDS.
EP05017698A EP1752235B1 (en) 2005-08-13 2005-08-13 Process for manufacture of core or mould
PT05017698T PT1752235E (en) 2005-08-13 2005-08-13 Process for manufacture of core or mould
JP2008525398A JP4820413B2 (en) 2005-08-13 2006-05-22 Production method of casting core or casting mold
CN200680029319.0A CN101287561B (en) 2005-08-13 2006-05-22 Method for casting core mass or mould by moulding materials
PCT/EP2006/004821 WO2007019898A1 (en) 2005-08-13 2006-05-22 Casting core mass
MX2007015598A MX2007015598A (en) 2005-08-13 2006-05-22 Casting core mass.
CA2617948A CA2617948C (en) 2005-08-13 2006-05-22 Casting core mass
BRPI0614778-0A BRPI0614778B1 (en) 2005-08-13 2006-05-22 Process for the preparation of foundry cores or molds from a molding material
AU2006281745A AU2006281745B2 (en) 2005-08-13 2006-05-22 Casting core mass
RU2008109321/02A RU2442673C2 (en) 2005-08-13 2006-05-22 Method of mould cores and boxes manufacturing
ZA200711019A ZA200711019B (en) 2005-08-13 2007-12-19 Casting core mass
US12/029,487 US8058325B2 (en) 2005-08-13 2008-02-12 Process for producing a casting mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05017698A EP1752235B1 (en) 2005-08-13 2005-08-13 Process for manufacture of core or mould

Publications (2)

Publication Number Publication Date
EP1752235A1 EP1752235A1 (en) 2007-02-14
EP1752235B1 true EP1752235B1 (en) 2008-05-07

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EP05017698A Active EP1752235B1 (en) 2005-08-13 2005-08-13 Process for manufacture of core or mould

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US (1) US8058325B2 (en)
EP (1) EP1752235B1 (en)
JP (1) JP4820413B2 (en)
CN (1) CN101287561B (en)
AT (1) ATE394185T1 (en)
AU (1) AU2006281745B2 (en)
BR (1) BRPI0614778B1 (en)
CA (1) CA2617948C (en)
DE (1) DE502005004015D1 (en)
DK (1) DK1752235T3 (en)
ES (1) ES2303161T3 (en)
MX (1) MX2007015598A (en)
PT (1) PT1752235E (en)
RU (1) RU2442673C2 (en)
SI (1) SI1752235T1 (en)
WO (1) WO2007019898A1 (en)
ZA (1) ZA200711019B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010018751B4 (en) * 2010-04-29 2015-08-13 Laempe & Mössner GmbH Method and device for producing molds or cores, in particular for foundry purposes
DE102010051567A1 (en) * 2010-11-18 2012-05-24 Ashland-Südchemie-Kernfest GmbH Binder, useful e.g. to produce molding mixtures, comprises polyol compounds having at least two hydroxy groups per molecule containing at least one phenolic resin and isocyanate compounds having at least two isocyanate groups per molecule
EP3898167A1 (en) * 2018-12-20 2021-10-27 proionic GmbH Mold composition comprising a sugar component

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124547A (en) * 1964-03-10 Process of contacting a microporous
US2145317A (en) * 1935-01-17 1939-01-31 Borden Co Foundry core binder
US3062760A (en) * 1959-10-06 1962-11-06 Electric Storage Battery Co Method of producing a microporous polymeric resin
GB1051320A (en) * 1964-01-13 1966-12-14 W.R. Grace & Co. Micro-porous polyethylene and a process for the manufacture thereof
DE1255239B (en) * 1965-04-01 1967-11-30 Adalbert Wittmoser Dr Ing Molding compound for making casting molds
FR1515784A (en) * 1966-03-30 1968-03-01 Lost wax casting process
US3375208A (en) * 1967-07-26 1968-03-26 Esb Inc Method for preparing a microporous thermoplastic resin material
DE2638042A1 (en) * 1975-09-17 1977-03-24 Fischer Ag Georg PROCESS FOR TREATMENT OF POROESE, GRAY BASE MATERIALS, IN PARTICULAR FOR THE PRODUCTION OF FOUNDRY SANDS
US4396430A (en) * 1981-02-04 1983-08-02 Ralph Matalon Novel foundry sand binding compositions
US4426462A (en) * 1982-07-27 1984-01-17 Dynamit Nobel Ag Method for the preparation of highly absorbent phenolic resin foams
JPS63174752A (en) * 1987-01-14 1988-07-19 Sadaji Nagabori Method and apparatus for continuous production of sand mold or core for casting suitable for non-coating casting
CN1008698B (en) * 1988-06-23 1990-07-11 铁道部戚墅堰机车车辆工艺研究所 The additive of silicate sand
CN1097661A (en) * 1993-07-17 1995-01-25 罗端权 Novel casting binder and manufacture method thereof
DE19549469C2 (en) 1995-07-12 1999-05-12 Eichenauer Gmbh & Co Kg F Casting core for casting molding and method for producing such a casting core
DE19525307C2 (en) 1995-07-12 2003-04-03 Eichenauer Gmbh & Co Kg F Molding compound for the production of casting cores and method for producing a casting core
US6013125A (en) * 1995-09-13 2000-01-11 Quraishi; Mashallah M. Investment of powders and method for rapid preparation of investment molds
US6139619A (en) * 1996-02-29 2000-10-31 Borden Chemical, Inc. Binders for cores and molds
US6703057B2 (en) * 1996-07-13 2004-03-09 Parnova Enterprises Limited Granulated sugar product
DE19647368A1 (en) * 1996-11-15 1998-05-20 Inst Neue Mat Gemein Gmbh Composites
GB9624340D0 (en) * 1996-11-22 1997-01-08 Foseco Int Sand reclamation
DE19914586A1 (en) 1999-03-31 2000-10-05 Bi Vt Gmbh Bindemittel Verfahr Binder mixture for production of foundry cores contains a polymeric resin with oxirane and-or phenoxy-acryloyl end groups and a radical or condensation crosslinker such as dibenzoyl peroxide or cyanoguanidine
DE10227512B4 (en) * 2002-06-19 2004-07-08 Georg Fischer Gmbh & Co.Kg Process for the production of foundry cores or molds, and foundry cores or molds produced by this process

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CN101287561B (en) 2014-02-19
PT1752235E (en) 2008-08-20
RU2008109321A (en) 2009-09-20
JP2009504406A (en) 2009-02-05
CN101287561A (en) 2008-10-15
JP4820413B2 (en) 2011-11-24
DE502005004015D1 (en) 2008-06-19
BRPI0614778A2 (en) 2011-04-12
US8058325B2 (en) 2011-11-15
ZA200711019B (en) 2008-11-26
ES2303161T3 (en) 2008-08-01
AU2006281745B2 (en) 2010-10-28
DK1752235T3 (en) 2008-08-25
MX2007015598A (en) 2008-04-09
RU2442673C2 (en) 2012-02-20
EP1752235A1 (en) 2007-02-14
CA2617948C (en) 2011-11-08
WO2007019898A1 (en) 2007-02-22
BRPI0614778B1 (en) 2015-01-06
US20080190320A1 (en) 2008-08-14
SI1752235T1 (en) 2008-08-31
AU2006281745A1 (en) 2007-02-22
CA2617948A1 (en) 2007-02-22

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