WO2006111156A1 - Noyaux de sels solubles dans l'eau - Google Patents

Noyaux de sels solubles dans l'eau Download PDF

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Publication number
WO2006111156A1
WO2006111156A1 PCT/DE2006/000706 DE2006000706W WO2006111156A1 WO 2006111156 A1 WO2006111156 A1 WO 2006111156A1 DE 2006000706 W DE2006000706 W DE 2006000706W WO 2006111156 A1 WO2006111156 A1 WO 2006111156A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
soluble salt
salt cores
mixture
soluble
Prior art date
Application number
PCT/DE2006/000706
Other languages
German (de)
English (en)
Inventor
Dieter GRÖZINGER
Original Assignee
Emil Müller 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 Müller GmbH filed Critical Emil Müller GmbH
Publication of WO2006111156A1 publication Critical patent/WO2006111156A1/fr

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Classifications

    • 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

Definitions

  • the present invention relates to water-soluble salt cores having the features of the preamble of claim 1.
  • Such salt cores for foundry purposes that are washed out after the casting of parts have long been known, as well as attempts to optimize them by admixing additives. It was found in DE-C-14 83 641 that an addition of up to 10% borax, magnesium oxide or talc improves the load capacity of salt cores of NaCl and / or KCl. DE-C-19 24 991 proposes to further increase the compressive and flexural strength the addition of water glass. Also, other salts have been proposed, such as an alkaline metal halide in US-A-33 56 129. Graphite is often used as the release agent. However, graphite volatilizes only at relatively high temperatures to CO and CO 2 , so that in the sintered salt cores undesirable proportions may still be present.
  • the object of the present invention is to provide water-soluble salt cores with the addition of a release agent which volatilises at significantly lower temperatures and is no longer present when the sintering temperatures of the salt cores are reached.
  • water-soluble salt cores which are prepared by compressing water-soluble salts such as NaCl or KCl under pressure and subsequent heat treatment, are characterized in that they contain a proportion of 0.1 to 3% molybdenum disulfide (MoS 2 ) as release agent. It has, shows that overall molybdenum begins to outgas at about 315 ° C and is no longer detectable at about 450 0 C in the salt cores.
  • MoS 2 molybdenum disulfide
  • the water-soluble salt cores further contain 0.5 to 15 wt .-% of a porosity-generating additive such as sugar, wheat semolina or oat bran or a combination of at least two of these substances, wherein the sugar preferably has a grain size of 0.2 to 1.6 mm.
  • a porosity-generating additive such as sugar, wheat semolina or oat bran or a combination of at least two of these substances, wherein the sugar preferably has a grain size of 0.2 to 1.6 mm.
  • the water-soluble salt cores contain as binder an inorganic phosphate or a mixture of inorganic phosphates in a proportion of between 0.5 and 10 wt .-% of the mixture, wherein a proportion of an inorganic borate may be further included.
  • the heat treatment is carried out at temperatures below 730 ° C.
  • the compression is advantageously carried out under a pressure of between 300 and 900 N / mm 2 .
  • the heat treatment is preferably a sintering process, and the sintering of the pressed salt cores is carried out at 650-730 ° C between 10 hours and 2 hours.
  • the salt core is suitable for die casting.
  • the salt core is suitable for die casting.

Abstract

L'invention concerne des noyaux de sels solubles dans l'eau obtenus par compression de sels solubles dans l'eau, comme le NaCl ou le KCl, sous pression puis par traitement thermique consécutif. Ces noyaux de sels ont une fraction de 0,1 à 3 % de disulfure de molybdène (MoS<SUB>2</SUB>) en tant qu'agent de séparation.
PCT/DE2006/000706 2005-04-21 2006-04-21 Noyaux de sels solubles dans l'eau WO2006111156A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005018614.9 2005-04-21
DE102005018614.9A DE102005018614B4 (de) 2005-04-21 2005-04-21 Verfahren zur Herstellung von wasserlöslichen Salzkernen

Publications (1)

Publication Number Publication Date
WO2006111156A1 true WO2006111156A1 (fr) 2006-10-26

Family

ID=36917436

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2006/000706 WO2006111156A1 (fr) 2005-04-21 2006-04-21 Noyaux de sels solubles dans l'eau

Country Status (2)

Country Link
DE (1) DE102005018614B4 (fr)
WO (1) WO2006111156A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011054920A3 (fr) * 2009-11-06 2011-10-13 Emil Müller GmbH Noyaux à base de sel, procédé de fabrication de ces noyaux et leur utilisation
CN103347625A (zh) * 2010-12-23 2013-10-09 圣让工业公司 通过等静压成型的部件实现连续铸造和锻造操作的盐芯的制造方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010038455A1 (de) 2010-07-27 2012-02-02 Federal-Mogul Nürnberg GmbH Verfahren zur Herstellung von wasserlöslichen Salzkernen zur Ausbildung von Hohlformen in Gießverfahren
DE102010044287A1 (de) 2010-09-03 2012-03-08 Daimler Ag Verfahren zum Herstellen von Druckgussbauteilen
EP2836318A2 (fr) * 2012-04-10 2015-02-18 Emil Müller GmbH Noyaux à base de sel, procédé de fabrication de ces noyaux et leur utilisation
DE102013007735B4 (de) 2012-05-08 2015-10-15 Audi Ag Verfahren zum Herstellen eines gussgeeigneten Salzkerns
CN110315023A (zh) * 2019-06-21 2019-10-11 杨红 一种铸造用高强度水溶性复合盐芯的制备方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1483641A1 (de) * 1965-06-12 1969-02-27 Schmidt Gmbh Karl Verfahren zum Eingiessen von Hohlraeumen
DE1924991A1 (de) * 1969-05-16 1970-11-19 Schmidt Gmbh Karl Kern fuer Giessereizwecke
SU519268A1 (ru) * 1975-03-14 1976-06-30 Институт Механизации Металлополимерных Систем Ан Белорусской Сср Смесь дл изготовлени водорастворимых литейных стержней
DE10312782A1 (de) * 2003-03-21 2004-10-07 Emil Müller GmbH Wasserlösliche Salzkerne und Verfahren zur Herstellung wasserlöslicher Salzkerne
DE10359547B3 (de) * 2003-12-17 2005-03-03 Emil Müller GmbH Wasserlösliche Salzkerne
WO2005080022A2 (fr) * 2004-02-19 2005-09-01 Emil Müller GmbH Noyaux de sel solubles dans l'eau pour coulee sous pression
DE102004038288A1 (de) * 2004-02-19 2005-09-08 Müller, Emil Wasserlösliche Salzkerne

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3001102C2 (de) * 1980-01-14 1982-09-23 Stefan 6057 Dietzenbach Graichen Festschmierstoff
JPH069730B2 (ja) * 1989-01-13 1994-02-09 花野商事株式会社 ダイカスト用粉末離型剤
DD296862B5 (de) * 1989-02-06 1994-09-29 Dresden Ev Inst Festkoerper Verfahren zur Herstellung von Halbzeug, insbesondere von Metallbaendern durch Schnellerstarrung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1483641A1 (de) * 1965-06-12 1969-02-27 Schmidt Gmbh Karl Verfahren zum Eingiessen von Hohlraeumen
DE1924991A1 (de) * 1969-05-16 1970-11-19 Schmidt Gmbh Karl Kern fuer Giessereizwecke
SU519268A1 (ru) * 1975-03-14 1976-06-30 Институт Механизации Металлополимерных Систем Ан Белорусской Сср Смесь дл изготовлени водорастворимых литейных стержней
DE10312782A1 (de) * 2003-03-21 2004-10-07 Emil Müller GmbH Wasserlösliche Salzkerne und Verfahren zur Herstellung wasserlöslicher Salzkerne
DE10359547B3 (de) * 2003-12-17 2005-03-03 Emil Müller GmbH Wasserlösliche Salzkerne
WO2005080022A2 (fr) * 2004-02-19 2005-09-01 Emil Müller GmbH Noyaux de sel solubles dans l'eau pour coulee sous pression
DE102004038288A1 (de) * 2004-02-19 2005-09-08 Müller, Emil Wasserlösliche Salzkerne

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 197722, Derwent World Patents Index; Class M22, AN 1977-39366Y, XP002397274 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011054920A3 (fr) * 2009-11-06 2011-10-13 Emil Müller GmbH Noyaux à base de sel, procédé de fabrication de ces noyaux et leur utilisation
CN102695572A (zh) * 2009-11-06 2012-09-26 埃米尔·米勒有限责任公司 盐基型芯、其制造方法和用途
CN103347625A (zh) * 2010-12-23 2013-10-09 圣让工业公司 通过等静压成型的部件实现连续铸造和锻造操作的盐芯的制造方法

Also Published As

Publication number Publication date
DE102005018614B4 (de) 2016-07-28
DE102005018614A1 (de) 2006-10-26

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