DE10312782A1 - Water-soluble salt cores and process for producing water-soluble salt cores - Google Patents
Water-soluble salt cores and process for producing water-soluble salt cores Download PDFInfo
- Publication number
- DE10312782A1 DE10312782A1 DE2003112782 DE10312782A DE10312782A1 DE 10312782 A1 DE10312782 A1 DE 10312782A1 DE 2003112782 DE2003112782 DE 2003112782 DE 10312782 A DE10312782 A DE 10312782A DE 10312782 A1 DE10312782 A1 DE 10312782A1
- Authority
- DE
- Germany
- Prior art keywords
- water
- soluble salt
- salt cores
- contain
- soluble
- 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
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Seasonings (AREA)
Abstract
Wasserlösliche Salzkerne, die durch Verdichten von wasserlöslichen Salzen unter Druck und anschließendem Sintern hergestellt werden, dadurch gekennzeichnet, dass sie einen Anteil von 0,5 bis zu 15 Gew.-% eines Porosität erzeugenden Zusatzes wie Zucker, Phenolharzlösung, Weizengrieß oder Haferkleie oder eine Kombination wenigstens zweier dieser Stoffe enthalten.Water-soluble salt cores, which are produced by compressing water-soluble salts under pressure and then sintering, characterized in that they contain from 0.5 to 15% by weight of a porosity-producing additive such as sugar, phenolic resin solution, wheat semolina or oat bran or a combination contain at least two of these substances.
Description
Die vorliegende Erfindung betrifft wasserlösliche Salzkerne und Verfahren zur Herstellung wasserlöslicher Salzkerne.The present invention relates to water-soluble Salt cores and process for the production of water-soluble salt cores.
Solche Salzkerne für Gießereizwecke
die nach dem Guss von Teilen ausgewaschen werden sind lange bekannt,
wie auch Versuche, diese durch Beimischung von Zusatzstoffen zu
optimieren. So wurde in der
Es hat sich aber herausgestellt,
dass bei sehr glatten Oberflächen
beim Umlaufen des Salzkerns
Aufgabe der vorliegenden Erfindung ist es, die geschilderten Probleme durch das Entstehen eines Oxydkeils und damit die aufwendigen Fertigungsverfahren zu vermeiden und einen Salzkern mit einer kontrolliert einstellbaren Porosität zu schaffen, bei dem es nicht zu einem Festigkeitsverlust kommt.Object of the present invention is the problems outlined by the formation of an oxide wedge and thus to avoid the complex manufacturing processes and one To create a salt core with a controlled adjustable porosity, where there is no loss of strength.
Diese Aufgabe wird mit den in Anspruch 1 genannten Merkmalen gelöst. Vorteilhafte Ausführungen und Weiterentwicklungen der Erfindung und insbesondere ein erfindungsgemäßes Verfahren sind in den weiteren Ansprüchen umfasst.This task is accomplished with the 1 mentioned features solved. Advantageous designs and further developments of the invention and in particular a method according to the invention are in the further claims includes.
Erfindungsgemäß sind wasserlösliche Salzkerne, die durch Verdichten von wasserlöslichen Salzen unter Druck und anschließendem Sintern hergestellt werden, dadurch gekennzeichnet, dass sie einen Anteil von 0,5 bis zu 15 Gew.-% eines Porosität erzeugenden Zusatzes wie Zucker, Phenolharzlösung, Weizengrieß oder Haferkleie oder eine Kombination wenigstens zweier dieser Stoffe enthalten.According to the invention, water-soluble salt cores are by compressing water soluble Salt under pressure and then Sintering are produced, characterized in that they have a Portion of 0.5 to 15 wt .-% of a porosity-producing additive such as Sugar, phenolic resin solution, Wheat semolina or Oat bran or a combination of at least two of these substances contain.
Bei Verwendung von Zucker weist dieser vorzugsweise eine Korngröße von 0,2 bis 1,6 mm aufweist.When using sugar, this shows preferably a grain size of 0.2 up to 1.6 mm.
Die erfindungsgemäßen wasserlöslichen Salzkerne können weiter einen Anteil von jeweils 0 bis 10% weiterer bekannter Zusätze wie Borax, Magnesium, Graphit und/oder Talkum enthalten.The water-soluble salt cores according to the invention can further a share of 0 to 10% each of other known additives such as Contain borax, magnesium, graphite and / or talc.
Ein erfindungsgemäßes. Verfahren zur Herstellung wasserlöslicher Salzkerne ist gekennzeichnet durch die Schritte:
- – Mischen wasserlöslicher Salze wie NaCl oder KCl mit einem Anteil von 0,5 bis zu 15 Gew.-% eines Porosität erzeugenden Zusatzes wie Zucker, Phenolharzlösung, Weizengrieß oder Haferkleie oder eine Kombination wenigstens zweier dieser Stoffe und jeweils 0 bis 10 Gew.-% Borax, Magnesium, Graphit oder Zucker in einer Mischtrommel,
- – Einfüllen der Mischung in eine Form,
- – Pressen der Mischung in der Form mit einem Presdruck von zwischen 1.500 und 2.500 KN/cm2,
- – Sintern des gepressten Salzkerns bei einer Temperatur von 500 bis 740°C während 1,5 bis 2,5 Stunden,
- – Entnehmen des Salzkerns und Abkühlen.
- - Mixing water-soluble salts such as NaCl or KCl with a proportion of 0.5 to 15% by weight of a porosity-producing additive such as sugar, phenolic resin solution, wheat semolina or oat bran or a combination of at least two of these substances and in each case 0 to 10% by weight Borax, magnesium, graphite or sugar in a mixing drum,
- - filling the mixture into a mold,
- Pressing the mixture in the mold with a pressure of between 1,500 and 2,500 KN / cm 2 ,
- - Sintering the pressed salt core at a temperature of 500 to 740 ° C for 1.5 to 2.5 hours,
- - Remove the salt core and cool.
Das Ergebnis ist ein Salzkern
Claims (7)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003112782 DE10312782B4 (en) | 2003-03-21 | 2003-03-21 | Water-soluble salt cores and process for producing water-soluble salt cores |
DE112004000975T DE112004000975D2 (en) | 2003-03-21 | 2004-03-22 | Water-soluble salt cores and process for producing water-soluble salt cores |
PCT/DE2004/000596 WO2004082866A2 (en) | 2003-03-21 | 2004-03-22 | Water-soluble salt cores and method for producing water-soluble salt cores |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003112782 DE10312782B4 (en) | 2003-03-21 | 2003-03-21 | Water-soluble salt cores and process for producing water-soluble salt cores |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10312782A1 true DE10312782A1 (en) | 2004-10-07 |
DE10312782B4 DE10312782B4 (en) | 2005-05-04 |
Family
ID=32946058
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2003112782 Expired - Fee Related DE10312782B4 (en) | 2003-03-21 | 2003-03-21 | Water-soluble salt cores and process for producing water-soluble salt cores |
DE112004000975T Expired - Fee Related DE112004000975D2 (en) | 2003-03-21 | 2004-03-22 | Water-soluble salt cores and process for producing water-soluble salt cores |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE112004000975T Expired - Fee Related DE112004000975D2 (en) | 2003-03-21 | 2004-03-22 | Water-soluble salt cores and process for producing water-soluble salt cores |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE10312782B4 (en) |
WO (1) | WO2004082866A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006111156A1 (en) * | 2005-04-21 | 2006-10-26 | Emil Müller GmbH | Water-soluble salt grains |
WO2018138210A1 (en) | 2017-01-25 | 2018-08-02 | Technische Universität Bergakademie Freiberg | Method for producing high temperature-resistant objects with improved thermomechanical properties |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006010449A2 (en) * | 2004-07-23 | 2006-02-02 | Ceramtec Ag Innovative Ceramic Engineering | Ceramic cores |
US20090250587A1 (en) * | 2005-09-30 | 2009-10-08 | Kaefer Dieter | Core and a Method for the Production Thereof |
DE102006031531A1 (en) | 2006-07-07 | 2008-01-10 | Emil Müller GmbH | Salt cores for plastic (injection) casting |
DE102006031532B3 (en) * | 2006-07-07 | 2008-04-17 | Emil Müller GmbH | Water-soluble salt core with functional component |
WO2013058152A1 (en) * | 2011-10-19 | 2013-04-25 | スズキ株式会社 | Casting core, method for producing same, and method for casting using said core |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3356129A (en) * | 1964-06-30 | 1967-12-05 | Schmidt Gmbh Karl | Process of casting metals by use of water-soluble salt cores |
DE1934787A1 (en) * | 1969-07-09 | 1971-01-14 | Schmidt Gmbh Karl | Salt core for foundry purposes |
DE1483641C3 (en) * | 1965-06-12 | 1973-10-11 | Karl Schmidt Gmbh, 7107 Neckarsulm | Water-soluble salt cores |
DE1924991C3 (en) * | 1969-05-16 | 1978-06-22 | Karl Schmidt Gmbh, 7107 Neckarsulm | Water-soluble salt cores |
JPS60118350A (en) * | 1983-11-30 | 1985-06-25 | Izumi Jidosha Kogyo Kk | Method for forming cavity in high-pressure casting |
US5248552A (en) * | 1990-07-11 | 1993-09-28 | Advanced Plastics Partnership | Molding core |
WO1998000251A1 (en) * | 1996-07-01 | 1998-01-08 | Alyn Corporation | Die casting employing soluble core |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1252716A (en) * | 1959-12-21 | 1961-02-03 | Fonderie De Prec | Advanced molding of fusible materials |
DE2917208A1 (en) * | 1979-04-27 | 1980-12-04 | Alcan Aluminiumwerke | CASTING CORE FOR GENERATING HARD ACCESSIBLE CAVES IN CASTING PIECES, AND METHOD FOR THE PRODUCTION THEREOF |
-
2003
- 2003-03-21 DE DE2003112782 patent/DE10312782B4/en not_active Expired - Fee Related
-
2004
- 2004-03-22 WO PCT/DE2004/000596 patent/WO2004082866A2/en active Application Filing
- 2004-03-22 DE DE112004000975T patent/DE112004000975D2/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3356129A (en) * | 1964-06-30 | 1967-12-05 | Schmidt Gmbh Karl | Process of casting metals by use of water-soluble salt cores |
DE1483641C3 (en) * | 1965-06-12 | 1973-10-11 | Karl Schmidt Gmbh, 7107 Neckarsulm | Water-soluble salt cores |
DE1924991C3 (en) * | 1969-05-16 | 1978-06-22 | Karl Schmidt Gmbh, 7107 Neckarsulm | Water-soluble salt cores |
DE1934787A1 (en) * | 1969-07-09 | 1971-01-14 | Schmidt Gmbh Karl | Salt core for foundry purposes |
JPS60118350A (en) * | 1983-11-30 | 1985-06-25 | Izumi Jidosha Kogyo Kk | Method for forming cavity in high-pressure casting |
US5248552A (en) * | 1990-07-11 | 1993-09-28 | Advanced Plastics Partnership | Molding core |
WO1998000251A1 (en) * | 1996-07-01 | 1998-01-08 | Alyn Corporation | Die casting employing soluble core |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006111156A1 (en) * | 2005-04-21 | 2006-10-26 | Emil Müller GmbH | Water-soluble salt grains |
DE102005018614B4 (en) * | 2005-04-21 | 2016-07-28 | Emil Müller GmbH | Process for the preparation of water-soluble salt cores |
WO2018138210A1 (en) | 2017-01-25 | 2018-08-02 | Technische Universität Bergakademie Freiberg | Method for producing high temperature-resistant objects with improved thermomechanical properties |
Also Published As
Publication number | Publication date |
---|---|
WO2004082866A3 (en) | 2004-12-16 |
WO2004082866A2 (en) | 2004-09-30 |
DE112004000975D2 (en) | 2006-02-16 |
DE10312782B4 (en) | 2005-05-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |