DE59702665D1 - METHOD FOR PRODUCING CORE MOLDINGS AND CIRCULAR SAND FOR FOUNDRY PURPOSES - Google Patents

METHOD FOR PRODUCING CORE MOLDINGS AND CIRCULAR SAND FOR FOUNDRY PURPOSES

Info

Publication number
DE59702665D1
DE59702665D1 DE59702665T DE59702665T DE59702665D1 DE 59702665 D1 DE59702665 D1 DE 59702665D1 DE 59702665 T DE59702665 T DE 59702665T DE 59702665 T DE59702665 T DE 59702665T DE 59702665 D1 DE59702665 D1 DE 59702665D1
Authority
DE
Germany
Prior art keywords
core box
core
preform
mixture
foundry
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.)
Expired - Lifetime
Application number
DE59702665T
Other languages
German (de)
Inventor
Thomas Steinhaeuser
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.)
LKAB Minerals GmbH
Original Assignee
Vereinigte Aluminium Werke AG
Vaw Aluminium AG
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 Vereinigte Aluminium Werke AG, Vaw Aluminium AG filed Critical Vereinigte Aluminium Werke AG
Application granted granted Critical
Publication of DE59702665D1 publication Critical patent/DE59702665D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B22C1/186—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 contaming ammonium or metal silicates, silica sols
    • B22C1/188—Alkali metal silicates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/12—Treating moulds or cores, e.g. drying, hardening

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

The invention relates to a method for the production of core preforms for foundry in which a) a mixture of inorganic, refractory foundry sand and a water glass-based inorganic binder is produced, b) the mixture is poured into a tempered core box c) the water contained in the mixture is withdrawn by a physical method and d) the core preform is taken out of the core box. The process is characterized by the fact that e) the tempered core box is subjected to a depression during filling f) the temperature/dwell time is adjusted after the closing of the core box so that a dimensionally stable and good bearing shell is formed on the edge of the preform g) the preform is immediately removed after opening of the core box and, under the effect of microwaves, is subjected to a complete drying.
DE59702665T 1996-08-09 1997-07-26 METHOD FOR PRODUCING CORE MOLDINGS AND CIRCULAR SAND FOR FOUNDRY PURPOSES Expired - Lifetime DE59702665D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19632293A DE19632293C2 (en) 1996-08-09 1996-08-09 Process for the production of core moldings for foundry technology
PCT/EP1997/004072 WO1998006522A2 (en) 1996-08-09 1997-07-26 Method for the production of core preforms and recycling core sand for foundry

Publications (1)

Publication Number Publication Date
DE59702665D1 true DE59702665D1 (en) 2000-12-28

Family

ID=7802305

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19632293A Expired - Lifetime DE19632293C2 (en) 1996-08-09 1996-08-09 Process for the production of core moldings for foundry technology
DE59702665T Expired - Lifetime DE59702665D1 (en) 1996-08-09 1997-07-26 METHOD FOR PRODUCING CORE MOLDINGS AND CIRCULAR SAND FOR FOUNDRY PURPOSES

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE19632293A Expired - Lifetime DE19632293C2 (en) 1996-08-09 1996-08-09 Process for the production of core moldings for foundry technology

Country Status (7)

Country Link
EP (1) EP0917499B1 (en)
AT (1) ATE197683T1 (en)
DE (2) DE19632293C2 (en)
DK (1) DK0917499T3 (en)
ES (1) ES2153677T3 (en)
HU (1) HU222658B1 (en)
WO (1) WO1998006522A2 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19951622A1 (en) 1999-10-26 2001-05-23 Vaw Ver Aluminium Werke Ag Binder system based on water glass
DE10200927A1 (en) * 2001-08-10 2003-03-06 Laempe Joachim Method and device for producing molds or cores for foundry purposes
MXPA04001086A (en) * 2001-08-10 2004-07-08 Laempe Joachim Method and device for the production of molds or cores for foundry purposes.
DE10144193C1 (en) * 2001-09-08 2002-10-31 Vaw Mandl & Berger Gmbh Linz Production of molded parts involves pouring a molding material into a molding tool in an injection molding machine
DE10144391C1 (en) * 2001-09-10 2002-10-17 Vaw Mandl & Berger Gmbh Linz Production of molded parts comprises pouring a molding material into a molding tool, adding heat to solidify the molding material by removing moisture, and temporarily passing hot gas
DE10209224A1 (en) * 2002-03-04 2003-10-09 Vaw Mandl & Berger Gmbh Linz Production of cast pieces from a molten metal comprises forming a cast molded part, forming a molded part from the molding material, pouring the molten bath into the casting mold, cooling, removing the fragments of the mold part
DE50206490D1 (en) * 2001-09-14 2006-05-24 Hydro Aluminium Mandl & Berger METHOD FOR PRODUCING CASTINGS, FORMING SAND AND ITS USE FOR THE IMPLEMENTATION OF THE PROCESS
DE10209183A1 (en) * 2002-03-04 2003-10-02 Vaw Mandl & Berger Gmbh Linz Production of cast pieces from a molten metal comprises forming a cast molded part, forming a molded part from the molding material, pouring the molten bath into the casting mold, cooling, removing the fragments of the mold part
DE10216464B4 (en) * 2002-04-12 2004-04-15 Deutsches Zentrum für Luft- und Raumfahrt e.V. Silica-bonded core materials, processes for their production and their use
DE102004042535B4 (en) 2004-09-02 2019-05-29 Ask Chemicals Gmbh Molding material mixture for the production of casting molds for metal processing, process and use
DE102006003198A1 (en) * 2006-01-24 2007-07-26 Deutsches Zentrum für Luft- und Raumfahrt e.V. Mechanically and thermally stable core, used for light metal- and/or investment casting, comprises hydrophilic aerogel granulates, sand and binding agent
DE102006061876A1 (en) 2006-12-28 2008-07-03 Ashland-Südchemie-Kernfest GmbH Molding material mixture, useful for producing casting molds for metal processing, comprises a fireproof molding base material, a binder based on water glass, a particulate metal oxide, e.g. silicon dioxide and further a carbohydrate
WO2008046651A1 (en) 2006-10-19 2008-04-24 Ashland-Südchemie-Kernfest GmbH Moulding material mixture containing carbohydrates
DE102006049379A1 (en) 2006-10-19 2008-04-24 Ashland-Südchemie-Kernfest GmbH Phosphorus-containing molding material mixture for the production of casting molds for metal processing
DE102007051850A1 (en) 2007-10-30 2009-05-07 Ashland-Südchemie-Kernfest GmbH Molding compound with improved flowability
DE102008041217A1 (en) * 2008-08-13 2010-02-18 Volkswagen Ag Molding material binder, useful for pourable molding material, preferably molding core inserts for casting mold, where the molding material binder is present in inorganic form
EP2163328A1 (en) 2008-09-05 2010-03-17 Minelco GmbH Core or foundry sand coated and/or mixed with soluble glass with a water content in the area of >= approx. 0.25 weight % to approx 0.9 weight %
EP2537926A1 (en) 2011-06-21 2012-12-26 Isobionics B.V. Valencene synthase
DE102015106126A1 (en) 2015-04-21 2016-10-27 Nemak, S.A.B. De C.V. Core box for the production of casting cores
RU2763701C1 (en) * 2021-06-22 2021-12-30 федеральное государственное бюджетное образовательное учреждение высшего образования "Нижегородский государственный технический университет им. Р.Е. Алексеева" (НГТУ) Method for making cores and molds

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB952788A (en) * 1962-02-15 1964-03-18 Foseco Int Moulds, cores and the like suitable for foundry and like purposes
US4226277A (en) * 1978-06-29 1980-10-07 Ralph Matalon Novel method of making foundry molds and adhesively bonded composites
EP0214988A1 (en) * 1984-06-12 1987-03-25 Mikrovagsapplikation Ab A method of manufacturing cores
JPS6167539A (en) * 1984-09-12 1986-04-07 Mitsubishi Heavy Ind Ltd Drying method of mold coating material
JPH04500780A (en) * 1987-12-08 1992-02-13 サハリ、ハリ Method for preparing molds and cores used in metal casting
JPH01215433A (en) * 1988-02-19 1989-08-29 Mitsubishi Motors Corp Manufacture of core for high pressure casting
US4960162A (en) * 1989-02-17 1990-10-02 Esco Corporation Method of reclaiming foundry sand

Also Published As

Publication number Publication date
DE19632293C2 (en) 1999-06-10
WO1998006522A3 (en) 1998-06-04
HUP0001766A2 (en) 2000-09-28
DK0917499T3 (en) 2001-02-12
HUP0001766A3 (en) 2000-11-28
ES2153677T3 (en) 2001-03-01
ATE197683T1 (en) 2000-12-15
HU222658B1 (en) 2003-09-29
EP0917499A2 (en) 1999-05-26
DE19632293A1 (en) 1998-02-19
EP0917499B1 (en) 2000-11-22
WO1998006522A2 (en) 1998-02-19

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: HYDRO ALUMINIUM DEUTSCHLAND GMBH, 51149 KOELN, DE

8327 Change in the person/name/address of the patent owner

Owner name: MINCELCO GMBH, 45128 ESSEN, DE

8327 Change in the person/name/address of the patent owner

Owner name: MINELCO GMBH, 45128 ESSEN, DE