DK0917499T3 - Process for the production of core raw material and recirculation core sand for casting purposes - Google Patents

Process for the production of core raw material and recirculation core sand for casting purposes

Info

Publication number
DK0917499T3
DK0917499T3 DK97934549T DK97934549T DK0917499T3 DK 0917499 T3 DK0917499 T3 DK 0917499T3 DK 97934549 T DK97934549 T DK 97934549T DK 97934549 T DK97934549 T DK 97934549T DK 0917499 T3 DK0917499 T3 DK 0917499T3
Authority
DK
Denmark
Prior art keywords
core
core box
production
preform
mixture
Prior art date
Application number
DK97934549T
Other languages
Danish (da)
Inventor
Thomas Steinhaeuser
Original Assignee
Vaw Ver Aluminium Werke 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 Vaw Ver Aluminium Werke Ag filed Critical Vaw Ver Aluminium Werke Ag
Application granted granted Critical
Publication of DK0917499T3 publication Critical patent/DK0917499T3/en

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

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.
DK97934549T 1996-08-09 1997-07-26 Process for the production of core raw material and recirculation core sand for casting purposes DK0917499T3 (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
DK0917499T3 true DK0917499T3 (en) 2001-02-12

Family

ID=7802305

Family Applications (1)

Application Number Title Priority Date Filing Date
DK97934549T DK0917499T3 (en) 1996-08-09 1997-07-26 Process for the production of core raw material and recirculation core sand for casting purposes

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
DE29925011U1 (en) * 1999-10-26 2008-10-02 Minelco Gmbh Foundry core binder system
DE10200927A1 (en) * 2001-08-10 2003-03-06 Laempe Joachim Method and device for producing molds or cores for foundry purposes
CN1538887A (en) * 2001-08-10 2004-10-20 ��ķ�չ���ʦ���޹�˾ Method and device for 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
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
CN1298456C (en) * 2001-09-14 2007-02-07 曼德尔和贝格尔氢化铝有限公司 Method for producing castings, molding sand and its use for carrying out said method
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
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
MX2009004130A (en) 2006-10-19 2009-06-03 Ashland Suedchemie Kernfest 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
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
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
WO1986000032A1 (en) * 1984-06-12 1986-01-03 MIKROVA^oGSAPPLIKATION AB A core box and method of manufacturing the same
JPS6167539A (en) * 1984-09-12 1986-04-07 Mitsubishi Heavy Ind Ltd Drying method of mold coating material
AU615015B2 (en) * 1987-12-08 1991-09-19 Harri Sahari Method for preparation of moulds and cores used in the casting of metals
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
WO1998006522A2 (en) 1998-02-19
EP0917499B1 (en) 2000-11-22
DE19632293C2 (en) 1999-06-10
HUP0001766A2 (en) 2000-09-28
ATE197683T1 (en) 2000-12-15
DE59702665D1 (en) 2000-12-28
EP0917499A2 (en) 1999-05-26
DE19632293A1 (en) 1998-02-19
ES2153677T3 (en) 2001-03-01
WO1998006522A3 (en) 1998-06-04
HUP0001766A3 (en) 2000-11-28
HU222658B1 (en) 2003-09-29

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