EP1691942B1 - Noyaux de sel solubles dans l'eau - Google Patents

Noyaux de sel solubles dans l'eau Download PDF

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Publication number
EP1691942B1
EP1691942B1 EP04802923A EP04802923A EP1691942B1 EP 1691942 B1 EP1691942 B1 EP 1691942B1 EP 04802923 A EP04802923 A EP 04802923A EP 04802923 A EP04802923 A EP 04802923A EP 1691942 B1 EP1691942 B1 EP 1691942B1
Authority
EP
European Patent Office
Prior art keywords
water
salt cores
soluble salt
mixture
inorganic
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
EP04802923A
Other languages
German (de)
English (en)
Other versions
EP1691942A1 (fr
Inventor
Dieter GRÖZINGER
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.)
KS Huayu Alutech GmbH
Original Assignee
KS Aluminium Technologie 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 KS Aluminium Technologie GmbH filed Critical KS Aluminium Technologie GmbH
Publication of EP1691942A1 publication Critical patent/EP1691942A1/fr
Application granted granted Critical
Publication of EP1691942B1 publication Critical patent/EP1691942B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B22C9/105—Salt cores
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/2419—Fold at edge

Definitions

  • the present invention relates to water-soluble salt cores having the features of the preamble of claim 1.
  • Object of the present invention is to avoid the problems described by using an alternative binder and to provide salt cores available that already at sintering temperatures of from 200 ° C have sufficient tensile strength, which at temperatures of Do not outgas below 700 ° C and can be used in all known types of casting.
  • water-soluble salt cores which are produced by compacting a mixture of water-soluble salts and a binder under pressure and subsequent sintering, are characterized in that the binder comprises an inorganic phosphate or a mixture of inorganic phosphates in a proportion of between 0.5 and 10% by weight. % of the mixture is and the heat treatment has been carried out at temperatures of between 200 ° C and 650 ° C, so that no change in the state of aggregation of the salt cores occurs. The costly process of preheating in the foundry can thus be dispensed with.
  • the salt cores can be used automatically at relatively low temperatures and outgassing does not take place. Also, the heat treatment takes place at temperatures well below the sintering temperature (730 ° C), which reduces the energy required in the core production.
  • the mixture may contain a proportion of an inorganic borate.
  • a high proportion of binder results in a rather rough surface at low pressure, a low proportion of binder at high pressure a smooth surface.
  • tensile strengths of between 1 and 3 kg were achieved, at 400 ° C between 2 and 3 kg.
  • the mixture contains a proportion of between 0 and 10 wt .-% of a release agent such as graphite.
  • the inorganic phosphate is, for example, a monoaluminum phosphate, a boron phosphate or a sodium polyphosphate.
  • the tensile strength was determined by means of a pneumatic spring scale with a slave pointer, wherein the slave pointer indicated a kilogram value at break of the clamped test piece.
  • the salt cores can be used automatically at relatively low temperatures and outgassing does not occur. Also, the heat treatment takes place at temperatures well below the sintering temperature (730 ° C), which reduces the energy required in the core production.

Claims (6)

  1. Noyaux de sel solubles dans l'eau, formés par compression d'une mixture de sels solubles dans l'eau et d'un liant sous pression et par traitement thermique suivant, caractérisés en ce que
    ledit liant est un phosphate anorganique ou une mixture de phosphates anorganiques avec un teneur se situant entre 0,5 et 10 pourcent en poids de la mixture, et ledit traitement thermique a été réalisé à des températures comprises entre 200°C et 650°C, de sorte l'état de matière des noyaux de sel n'est pas modifié.
  2. Noyaux de sel solubles dans l'eau selon la revendication 1, caractérisés en ce que le liant a un teneur en un borate anorganique.
  3. Noyaux de sel solubles dans l'eau selon les revendications 1 ou 2, caractérisés en ce que la mixture a un teneur comprise entre >0 et 10 pourcent en poids d'un agent de séparation.
  4. Noyaux de sel solubles dans l'eau selon les revendications 1, 2 ou 3, caractérisés en ce que le phosphate anorganique est un phosphate mono d'aluminium.
  5. Noyaux de sel solubles dans l'eau selon les revendications 1, 2 ou 3, caractérisés en ce que le phosphate anorganique est un borophosphate.
  6. Noyaux de sel solubles dans l'eau selon les revendications 1, 2 ou 3, caractérisés en ce que le phosphate anorganique est un phosphate de sodium.
EP04802923A 2003-12-17 2004-12-11 Noyaux de sel solubles dans l'eau Not-in-force EP1691942B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10359547A DE10359547B3 (de) 2003-12-17 2003-12-17 Wasserlösliche Salzkerne
PCT/DE2004/002718 WO2005058527A1 (fr) 2003-12-17 2004-12-11 Noyaux de sel solubles dans l'eau

Publications (2)

Publication Number Publication Date
EP1691942A1 EP1691942A1 (fr) 2006-08-23
EP1691942B1 true EP1691942B1 (fr) 2011-05-11

Family

ID=34112167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04802923A Not-in-force EP1691942B1 (fr) 2003-12-17 2004-12-11 Noyaux de sel solubles dans l'eau

Country Status (5)

Country Link
US (2) US20070036941A1 (fr)
EP (1) EP1691942B1 (fr)
AT (1) ATE508817T1 (fr)
DE (1) DE10359547B3 (fr)
WO (1) WO2005058527A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104399865A (zh) * 2014-12-01 2015-03-11 湖南江滨机器（集团）有限责任公司 一种水溶性石墨复合盐芯材料、石墨复合盐芯及其制备方法

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1781433A2 (fr) * 2003-12-17 2007-05-09 KS Aluminium Technologie Aktiengesellschaft Noyau pouvant etre retire pour le moulage de metaux et procede de production dudit noyau
DE102005018614B4 (de) * 2005-04-21 2016-07-28 Emil Müller GmbH Verfahren zur Herstellung von wasserlöslichen Salzkernen
US20090250587A1 (en) * 2005-09-30 2009-10-08 Kaefer Dieter Core and a Method for the Production Thereof
DE102006031531A1 (de) 2006-07-07 2008-01-10 Emil Müller GmbH Salzkerne für Kunststoff(spritz)guß
DE102006031532B3 (de) 2006-07-07 2008-04-17 Emil Müller GmbH Wasserlöslicher Salzkern mit Funktionsbauteil
WO2008070314A2 (fr) * 2006-10-26 2008-06-12 Integrated Dna Technologies, Inc. Analyse d'empreinte digitale pour une pluralité d'oligonucléotides
RU2551335C2 (ru) * 2008-07-18 2015-05-20 Керамтек Гмбх Стержень на солевой основе и способ его изготовления
DE102012022390B3 (de) * 2012-11-15 2014-04-03 Audi Ag Verfahren zur kalten Herstellung eines Salzkerns für das Druckgießen
DE102012022631B3 (de) * 2012-11-20 2014-04-03 Audi Ag Verfahren zur Herstellung eines Salzkerns für das Druckgießen mit einer zuvor abgepackten Salzmenge
DE102013009055B4 (de) 2013-05-28 2018-10-31 Audi Ag Werkzeug und Verfahren zur Herstellung von Salzkernen für das Druckgießen von Metallen
WO2015011233A1 (fr) * 2013-07-24 2015-01-29 Emil Müller GmbH Noyaux de sel et procédé de fabrication additive pour réaliser des noyaux de sel
WO2015014711A1 (fr) 2013-07-24 2015-02-05 Emil Müller GmbH Noyaux de sel et procédés de fabrication additive pour réaliser des noyaux de sel
WO2015011232A1 (fr) * 2013-07-24 2015-01-29 Emil Müller GmbH Noyaux de sel et procédés de fabrication additive pour réaliser des noyaux de sel
DE102015223008A1 (de) 2015-11-21 2017-05-24 H2K Minerals Gmbh Form, Verfahren zu ihrer Herstellung und Verwendung
CN107812893A (zh) * 2017-10-18 2018-03-20 张国栋 一种铸造用浇注盐芯及其制备方法
DE102018200607A1 (de) 2018-01-15 2019-07-18 Reinsicht Gmbh Verfahren zur Erzeugung von für die Herstellung von Faserverbundkörpern oder Gussteilen aus Metall oder Kunststoff geeigneten Formen und Kernen, bei dem Verfahren einsetzbare Formgrundstoffe und Binder sowie gemäß dem Verfahren hergestellte Formen und Kerne
US11724306B1 (en) 2020-06-26 2023-08-15 Triad National Security, Llc Coating composition embodiments for use in investment casting methods

Citations (1)

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WO2005058526A2 (fr) * 2003-12-17 2005-06-30 Ks Aluminium-Technologie Ag Noyau pouvant etre retire pour le moulage de metaux et procede de production dudit noyau

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DE1483641C3 (de) * 1965-06-12 1973-10-11 Karl Schmidt Gmbh, 7107 Neckarsulm Wasserlösliche Salzkerne
DE1924991C3 (de) * 1969-05-16 1978-06-22 Karl Schmidt Gmbh, 7107 Neckarsulm Wasserlösliche Salzkerne
DE1934787A1 (de) * 1969-07-09 1971-01-14 Schmidt Gmbh Karl Salzkern fuer Giessereizwecke
JPS5536031A (en) * 1978-09-06 1980-03-13 Hitachi Ltd Fluid moldable water soluble mold
SU1196096A1 (ru) * 1982-11-15 1985-12-07 Московский ордена Ленина и ордена Трудового Красного Знамени химико-технологический институт им.Д.И.Менделеева Смесь дл изготовлени водорастворимых стержней
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Patent Citations (1)

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WO2005058526A2 (fr) * 2003-12-17 2005-06-30 Ks Aluminium-Technologie Ag Noyau pouvant etre retire pour le moulage de metaux et procede de production dudit noyau

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104399865A (zh) * 2014-12-01 2015-03-11 湖南江滨机器（集团）有限责任公司 一种水溶性石墨复合盐芯材料、石墨复合盐芯及其制备方法
CN104399865B (zh) * 2014-12-01 2016-08-24 湖南江滨机器（集团）有限责任公司 一种水溶性石墨复合盐芯材料、石墨复合盐芯及其制备方法

Also Published As

Publication number Publication date
ATE508817T1 (de) 2011-05-15
US20070036941A1 (en) 2007-02-15
US8403028B2 (en) 2013-03-26
US20120132785A1 (en) 2012-05-31
EP1691942A1 (fr) 2006-08-23
WO2005058527A1 (fr) 2005-06-30
DE10359547B3 (de) 2005-03-03

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