EP1691942A1 - Noyaux de sel solubles dans l'eau - Google Patents

Noyaux de sel solubles dans l'eau

Info

Publication number
EP1691942A1
EP1691942A1 EP04802923A EP04802923A EP1691942A1 EP 1691942 A1 EP1691942 A1 EP 1691942A1 EP 04802923 A EP04802923 A EP 04802923A EP 04802923 A EP04802923 A EP 04802923A EP 1691942 A1 EP1691942 A1 EP 1691942A1
Authority
EP
European Patent Office
Prior art keywords
water
soluble salt
mixture
inorganic
phosphate
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.)
Granted
Application number
EP04802923A
Other languages
German (de)
English (en)
Other versions
EP1691942B1 (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
Emil Mueller 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 Emil Mueller GmbH filed Critical Emil Mueller 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 with the features of the preamble of claim 1.
  • the object of the present invention is to avoid the problems described by using an alternative binder and to provide salt cores which have sufficient tensile strength even at sintering temperatures of from 200 ° C. and which do not outgas at temperatures of below 700 ° C. and which can be used with all known types of casting.
  • This object is achieved with the features mentioned in claim 1.
  • Advantageous embodiments and further developments of the invention and in particular a method according to the invention are included in the further claims.
  • water-soluble salt cores which are produced by compressing a mixture of water-soluble salts and a binder under pressure and then sintering are characterized in that the binder is an inorganic phosphate or a mixture of inorganic phosphates in a proportion of between 0.5 and 10% by weight. % of the mixture is.
  • the mixture may contain a portion of an inorganic borate.
  • a high proportion of binder gives a rather rough surface at low pressure, a low proportion of binder at high pressure gives a smooth surface.
  • a sintering temperature 200 ° C 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% by weight of a release agent such as graphite.
  • the inorganic phosphate is, for example, a monoaluminum phosphate, a boron phosphate or a sodium polyphosphate.
  • the heat treatment takes place at temperatures below 730 ° C so that there is no change in the state of aggregate of the salt cores, preferably at temperatures between 200 ° C and 650 ° C.
  • the tensile strength was determined by means of a pneumatic spring balance with a drag pointer, the drag pointer giving a kilogram value when the clamped test piece broke.
  • the costly process of pre-heating in the foundry can be dispensed with, the salt cores can be used automatically at relatively low temperatures and there is no outgassing.
  • the heat treatment also takes place at temperatures significantly below the sintering temperature (730 ° C.), which reduces the energy requirement in the core production.
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 true EP1691942A1 (fr) 2006-08-23
EP1691942B1 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
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

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005018614B4 (de) * 2005-04-21 2016-07-28 Emil Müller GmbH Verfahren zur Herstellung von wasserlöslichen Salzkernen
EP1934002B1 (fr) * 2005-09-30 2019-07-31 CeramTec GmbH Noyaux et procédé de production de noyaux
DE102006031532B3 (de) * 2006-07-07 2008-04-17 Emil Müller GmbH Wasserlöslicher Salzkern mit Funktionsbauteil
DE102006031531A1 (de) 2006-07-07 2008-01-10 Emil Müller GmbH Salzkerne für Kunststoff(spritz)guß
CA2667374A1 (fr) * 2006-10-26 2008-06-12 Integrated Dna Technologies, Inc. Analyse d'empreinte digitale pour une pluralite d'oligonucleotides
BRPI0915997A2 (pt) * 2008-07-18 2019-04-09 Ceram Gmbh núcleo à base de sal e método para sua produção
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
DE102014214530A1 (de) * 2013-07-24 2015-01-29 Emil Müller GmbH Salzkerne und generative Fertigungsverfahren zur Herstellung von Salzkernen
EP3024608B1 (fr) * 2013-07-24 2019-05-01 Emil Müller GmbH Noyaux de sel et procédés de fabrication additive pour réaliser des noyaux de sel
EP3024610B1 (fr) 2013-07-24 2018-11-21 Emil Müller GmbH Noyaux de sel et procédés de fabrication additive pour réaliser des noyaux de sel
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
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

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US2878539A (en) * 1956-04-05 1959-03-24 Borden Co Bonding inorganic granules
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
SU1639872A1 (ru) * 1989-01-02 1991-04-07 Всесоюзный Проектно-Технологический Институт Литейного Производства Смесь дл изготовлени литейных форм и стержней
JPH02213431A (ja) * 1989-02-13 1990-08-24 Kobe Steel Ltd ＳｉＣウィスカ強化Ａｌ合金複合材料
US5262100A (en) * 1990-07-11 1993-11-16 Advanced Plastics Partnership Method of core removal from molded products
GB9022754D0 (en) * 1990-10-19 1990-12-05 Pilkington Controlled Release Improvements in or relating to water dispersible moulds
GB9324509D0 (en) * 1993-11-30 1994-01-19 Borden Uk Ltd Foundry binder
DE19525307C2 (de) * 1995-07-12 2003-04-03 Eichenauer Gmbh & Co Kg F Formmasse zur Herstellung von Gießkernen und Verfahren zur Herstellung eines Gießkerns
KR20000006623A (ko) * 1999-07-06 2000-02-07 이인호 고압주조용붕괴성코어의제조방법과코어및그코어의추출방법
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005058527A1 *

Cited By (1)

* 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

Also Published As

Publication number Publication date
US8403028B2 (en) 2013-03-26
EP1691942B1 (fr) 2011-05-11
US20120132785A1 (en) 2012-05-31
DE10359547B3 (de) 2005-03-03
ATE508817T1 (de) 2011-05-15
US20070036941A1 (en) 2007-02-15
WO2005058527A1 (fr) 2005-06-30

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