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EP2014391A3 - Method for producing a core and/or mould sand for casting purposes - Google Patents

Method for producing a core and/or mould sand for casting purposes Download PDF

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Publication number
EP2014391A3
EP2014391A3 EP08009314A EP08009314A EP2014391A3 EP 2014391 A3 EP2014391 A3 EP 2014391A3 EP 08009314 A EP08009314 A EP 08009314A EP 08009314 A EP08009314 A EP 08009314A EP 2014391 A3 EP2014391 A3 EP 2014391A3
Authority
EP
European Patent Office
Prior art keywords
additive
core
producing
inorganic
mould sand
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
EP08009314A
Other languages
German (de)
French (fr)
Other versions
EP2014391A2 (en
EP2014391B1 (en
Inventor
Cornelius Grefhorst
Spyridon Tzintos
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.)
S & B Industrial Minerals GmbH
Original Assignee
S & B Industrial Minerals 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 S & B Industrial Minerals GmbH filed Critical S & B Industrial Minerals GmbH
Publication of EP2014391A2 publication Critical patent/EP2014391A2/en
Publication of EP2014391A3 publication Critical patent/EP2014391A3/en
Application granted granted Critical
Publication of EP2014391B1 publication Critical patent/EP2014391B1/en
Active 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
    • B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

Gegenstand der Erfindung ist ein Verfahren zur Herstellung eines Kern- und/oder Formsandes für Gießereizwecke. Dabei wird ein granularer mineralischer Formgrundstoff mit einem Additiv sowie einem anorganischen Bindemittel gemischt. Erfindungsgemäß wird als Additiv ein anorganisches Blähadditiv mit einer Blähzahl von wenigstens 9 eingesetzt, also einer höheren Blähzahl als sie für Kohle erreicht wird. Alternativ kann auch mit einem anorganischen Additiv gearbeitet werden, beispielsweise mit makrokristallinen Graphit, wobei die Fertigmischung aus dem Formgrundstoff, dem Additiv und dem Bindemittel bis zu einer Dichtezunahme von wenigstens 20 g/dm3 kompaktiert wird.

Figure imgaf001
The invention relates to a method for producing a core and / or foundry sand for foundry purposes. In this case, a granular mineral molding material is mixed with an additive and an inorganic binder. According to the invention, the additive used is an inorganic bulking additive having a Blähzahl of at least 9, ie a higher Blähzahl than it is achieved for coal. Alternatively, it is also possible to work with an inorganic additive, for example with macrocrystalline graphite, the finished mixture of the molding base material, the additive and the binder being compacted to a density increase of at least 20 g / dm 3 .
Figure imgaf001
EP08009314.9A 2007-06-12 2008-05-21 Method for producing a core and/or mould sand for casting purposes Active EP2014391B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007027621A DE102007027621A1 (en) 2007-06-12 2007-06-12 Process for producing a core and / or foundry sand for foundry purposes

Publications (3)

Publication Number Publication Date
EP2014391A2 EP2014391A2 (en) 2009-01-14
EP2014391A3 true EP2014391A3 (en) 2011-08-31
EP2014391B1 EP2014391B1 (en) 2014-03-12

Family

ID=39711964

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08009314.9A Active EP2014391B1 (en) 2007-06-12 2008-05-21 Method for producing a core and/or mould sand for casting purposes

Country Status (3)

Country Link
US (1) US8029711B2 (en)
EP (1) EP2014391B1 (en)
DE (1) DE102007027621A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009041677A1 (en) 2009-09-16 2011-03-24 Süd-Chemie AG Foundry additive based on graphite
DE102011077711A1 (en) * 2011-06-17 2012-12-20 E.G.O. Elektro-Gerätebau GmbH Casting tool and method for producing a casting tool
FR2991314B1 (en) * 2012-05-30 2014-06-06 Saint Gobain Placo PLASTER COMPOSITION FOR REFRACTORY MOLDS
BR112015015966A2 (en) * 2013-01-04 2017-07-11 S & B Ind Minerals Gmbh method for producing core sand and / or casting sand for foundry purposes
CN104174810A (en) * 2014-08-29 2014-12-03 无锡柯马机械有限公司 Casting process
CN104384437A (en) * 2014-11-17 2015-03-04 无锡市百顺机械厂 Foundry technology
KR101840275B1 (en) * 2016-06-28 2018-03-20 현대자동차주식회사 Vermiculite Core for Vehicle and Method for Manufacturing thereof
EP3524372A1 (en) * 2018-02-08 2019-08-14 Akademia Gorniczo-Hutnicza im. Stanislawa Staszica w Krakowie Moulding or core sandmix
CN113365756A (en) * 2018-09-28 2021-09-07 英默里斯美国公司 Production of foundry premix compositions
CN114309452B (en) * 2021-11-15 2023-07-25 北京仁创砂业铸造材料有限公司 Precoated sand additive, precoated sand and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701207A (en) * 1952-01-18 1955-02-01 Jr Herbert Greenewald Mold composition and process
US4505750A (en) * 1983-11-25 1985-03-19 Venture Chemicals, Inc. Foundry mold and core sands

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2828214A (en) 1953-06-15 1958-03-25 Archer Daniels Midland Co Foundry sand additive
US2992090A (en) * 1958-03-27 1961-07-11 Du Pont Herbicidal pellets
HU166309B (en) * 1973-11-19 1975-02-28
US4039169A (en) * 1976-02-02 1977-08-02 Carver Foundry Products Continuous sand muller
DE3017119A1 (en) 1980-05-03 1981-11-05 Dr. Heinze GmbH, 4554 Kettenkamp Iron casting mould contg. quartz sand, bentonite and water - and lustrous carbon former-contg. agglomerate prepn. from coal or other dust preventing iron fusion to moulding sand
DE3039032A1 (en) * 1980-10-16 1982-05-13 Gebr. Lüngen KG, 4006 Erkrath Insert for foundry moulds - esp. feeder head or thermally insulating hot top for metal moulds used for casting steel ingots
JPS5868446A (en) * 1981-10-20 1983-04-23 Toyota Central Res & Dev Lab Inc Composition for easily collapsible mold
DE10205158A1 (en) * 2002-02-07 2003-08-21 Iko Minerals Gmbh Process for producing a molding sand, particularly in a cycle, for foundry purposes
DE102005006492A1 (en) * 2005-02-12 2006-08-24 S&B Industrial Minerals Gmbh Process and apparatus for producing swellable coarse grains

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701207A (en) * 1952-01-18 1955-02-01 Jr Herbert Greenewald Mold composition and process
US4505750A (en) * 1983-11-25 1985-03-19 Venture Chemicals, Inc. Foundry mold and core sands

Also Published As

Publication number Publication date
DE102007027621A1 (en) 2008-12-18
US8029711B2 (en) 2011-10-04
EP2014391A2 (en) 2009-01-14
EP2014391B1 (en) 2014-03-12
US20090025606A1 (en) 2009-01-29

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