EP1095719A3 - Binder, core sand and process for their production - Google Patents

Binder, core sand and process for their production Download PDF

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Publication number
EP1095719A3
EP1095719A3 EP00122845A EP00122845A EP1095719A3 EP 1095719 A3 EP1095719 A3 EP 1095719A3 EP 00122845 A EP00122845 A EP 00122845A EP 00122845 A EP00122845 A EP 00122845A EP 1095719 A3 EP1095719 A3 EP 1095719A3
Authority
EP
European Patent Office
Prior art keywords
core
binder
solution
amount
core 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
EP00122845A
Other languages
German (de)
French (fr)
Other versions
EP1095719A2 (en
EP1095719B1 (en
Inventor
Thomas Prof. Dr.-Ing. Steinhäuser
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.)
Hydro Aluminium Deutschland 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
Priority to SI200030829T priority Critical patent/SI1095719T1/en
Publication of EP1095719A2 publication Critical patent/EP1095719A2/en
Publication of EP1095719A3 publication Critical patent/EP1095719A3/en
Application granted granted Critical
Publication of EP1095719B1 publication Critical patent/EP1095719B1/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
    • B22C1/167—Mixtures of inorganic and organic binding agents
    • 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
    • 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
    • B22C1/20—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 organic agents
    • B22C1/205—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 organic agents of organic silicon or metal compounds, other organometallic compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C13/00—Moulding machines for making moulds or cores of particular shapes
    • B22C13/12—Moulding machines for making moulds or cores of particular shapes for cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/23—Compacting by gas pressure or vacuum
    • B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles
    • B22C15/245—Blowing tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Mold Materials And Core Materials (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

Ein Bindemittelsystem auf Wasserglasbasis besteht aus einer wässrigen Alkalisilikatlösung der allgemeinen Zusammensetzung: xSiO2 · yM2O · zH2O, wobei für M die Alkalionen Li+, K+ oder Na+ stehen und einer hygroskopischen Base, die im Verhältnis 1 : 4 bis 1 : 6 zugesetzt wird, wobei der Modul Na2O/SiO2 gleich 2,5 bis 3,5 bei einem Feststoffanteil von 20 bis 40 % beträgt und wobei als hygroskopische Base 30 %ige Natronlauge in einer wässrigen Lösung verwendet wird. Erfindungsgemäß enthält die wässrige Alkalisilikatlösung eine Emulsionslösung mit 8 bis 10 % Silikonöl bezogen auf die Bindermenge, wobei das Silikonöl einen Siedenpunkt ≥ 250 ° aufweist. Die Bindermenge für ein Kernsandgemisch beträgt 1,0 bis 2,5 %, bezogen auf die Gesamtmenge an körnigem Feststoff, wobei das Herstellungsverfahren in einer Kernschießmaschine, bestehend aus einem vertikal angeordneten Gehäuse mit einem horizontalen Lufteintritt durchgeführt wird. Das Kernsandgemisch wird über einen Trichter in einen geschlitzten Sandzylinder eingegeben. Die Verbindung zwischen Trichter und Sandzylinder ist während des Einschießens verschlossen. Das im geschlitzten Sandzylinder befindliche Kernsandgemisch wird mit einem Luftdruck von p1 verdichtet und dann bei einem Druck p2 > p1 in die Kernbüchse geschossen.A water-glass-based binder system consists of an aqueous alkali silicate solution of the general composition: xSiO 2 .yM 2 O .zH 2 O, where M is the alkali ions Li + , K + or Na + and a hygroscopic base which is in a ratio of 1: 4 to 1: 6 is added, the modulus Na 2 O / SiO 2 being 2.5 to 3.5 with a solids content of 20 to 40%, and 30% sodium hydroxide solution in an aqueous solution being used as the hygroscopic base. According to the invention, the aqueous alkali silicate solution contains an emulsion solution with 8 to 10% silicone oil based on the amount of binder, the silicone oil having a boiling point 250 250 °. The amount of binder for a core sand mixture is 1.0 to 2.5%, based on the total amount of granular solid, the production process being carried out in a core shooter, consisting of a vertically arranged housing with a horizontal air inlet. The core sand mixture is fed into a slotted sand cylinder via a funnel. The connection between the funnel and sand cylinder is closed during the injection. The core sand mixture in the slotted sand cylinder is compressed with an air pressure of p 1 and then shot into the core sleeve at a pressure p 2 > p 1 .

EP00122845A 1999-10-26 2000-10-20 Binder, core sand and process for their production Expired - Lifetime EP1095719B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200030829T SI1095719T1 (en) 1999-10-26 2000-10-20 Binder, core sand and process for their production

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19951622A DE19951622A1 (en) 1999-10-26 1999-10-26 Binder system based on water glass
DE19951622 1999-10-26

Publications (3)

Publication Number Publication Date
EP1095719A2 EP1095719A2 (en) 2001-05-02
EP1095719A3 true EP1095719A3 (en) 2001-06-20
EP1095719B1 EP1095719B1 (en) 2005-12-28

Family

ID=7926971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00122845A Expired - Lifetime EP1095719B1 (en) 1999-10-26 2000-10-20 Binder, core sand and process for their production

Country Status (14)

Country Link
US (1) US7022178B1 (en)
EP (1) EP1095719B1 (en)
AT (1) ATE314168T1 (en)
BR (1) BR0015090B1 (en)
CZ (1) CZ297087B6 (en)
DE (4) DE29925010U1 (en)
ES (1) ES2255932T3 (en)
HU (1) HU225725B1 (en)
MX (1) MXPA02004239A (en)
NO (1) NO334154B1 (en)
SI (1) SI1095719T1 (en)
SK (1) SK286218B6 (en)
TR (1) TR200201117T2 (en)
WO (1) WO2001030517A2 (en)

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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
DE102006011530A1 (en) * 2006-03-10 2007-09-13 Minelco Gmbh Mold or molding, foundry-molding material mixture and process for its preparation
HUE029506T2 (en) * 2006-10-19 2017-02-28 Ask Chemicals 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
DE102007027577A1 (en) 2007-06-12 2008-12-18 Minelco Gmbh Molding material mixture, molded article for foundry purposes and method for producing a molded article
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 %
MX339544B (en) 2008-12-18 2016-05-31 Tenedora Nemak Sa De Cv Method and composition of binder for manufacturing sand molds and/or cores for foundries.
KR101199111B1 (en) * 2009-10-30 2012-11-09 현대자동차주식회사 Core material mixture for casting, method for manufacturing core for casting and core for casting using the same
DE102011114626A1 (en) 2011-09-30 2013-04-04 Ask Chemicals Gmbh Coating materials for inorganic molds and cores and their use
DE102011115024A1 (en) 2011-10-07 2013-04-11 Ask Chemicals Gmbh Coating compositions for inorganic casting molds and cores comprising formic acid esters and their use
DE102011115025A1 (en) 2011-10-07 2013-04-11 Ask Chemicals Gmbh Coating compositions for inorganic casting molds and cores containing salts and their use
DE102013006135A1 (en) * 2012-04-10 2013-10-10 Emil Müller GmbH Salt-based cores, process for their preparation and their use
ES2628255T3 (en) 2013-10-19 2017-08-02 Peak Deutschland Gmbh Procedure to produce lost males or mold pieces for the production of castings.
CN104907485B (en) * 2015-06-16 2018-01-12 沈阳汇亚通铸造材料有限责任公司 A kind of temperature core box inorganic binder and its preparation method and application
ITUA20162227A1 (en) * 2016-04-01 2017-10-01 Cavenaghi S P A Foundry inorganic binder system
CZ2016331A3 (en) * 2016-06-03 2017-06-21 Slévárna HEUNISCH Brno s.r.o. A modified explosion tube for core shooting machines
CN106424598B (en) * 2016-11-15 2018-10-09 盐城市汉铜智能铸造设备有限公司 Penetrate the full-automatic sand casting moulding machine cartridge structure of sand up and down
CN106424595B (en) * 2016-11-15 2018-10-09 盐城市汉铜智能铸造设备有限公司 Penetrate the full-automatic sand casting moulding machine copper sheathing mounting structure of sand up and down
DE102017107655A1 (en) 2017-01-04 2018-07-05 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Use of an acid-containing sizing composition in the foundry industry
DE102017107657A1 (en) 2017-01-04 2018-07-05 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung A sizing composition comprising organic ester compounds and particulate amorphous silica for use in the foundry industry
DE102017107658A1 (en) 2017-01-04 2018-07-05 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung A sizing composition for the foundry industry containing particulate amorphous silica and acid
DE102017107531A1 (en) 2017-04-07 2018-10-11 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Process for the production of casting molds, cores and mold base materials regenerated therefrom
CN110405135A (en) * 2019-08-19 2019-11-05 陈星利 A kind of casting New-type Modified Sodium Silicate and casting New-type Modified Sodium Silicate sand
CN110496935B (en) * 2019-09-23 2021-05-25 湖北工业大学 Matched liquid curing agent for phosphate binder for warm-box process and using method thereof
CN111644558B (en) * 2020-06-18 2021-12-07 广州润京科技有限公司 Mixed reinforced water glass inorganic adhesive and preparation method thereof
DE102020127603A1 (en) 2020-10-20 2022-04-21 Kurtz Gmbh Method and device for casting a metal casting using a sand core

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GB857132A (en) * 1958-01-16 1960-12-29 Midland Silicones Ltd Improvements in or relating to foundry sand compositions
GB1332943A (en) * 1971-05-27 1973-10-10 Nii Tekh Avtomobil Promy Device for forced filling of moulding and core boxes with moulding amterial
US4162238A (en) * 1973-07-17 1979-07-24 E. I. Du Pont De Nemours And Company Foundry mold or core compositions and method
GB2013121A (en) * 1977-11-29 1979-08-08 Fordath Ltd Treating Foundry Sand
GB2016483A (en) * 1978-03-09 1979-09-26 Ahlsell Ir Ab Method at the making of bodies of granular and/or fibrous material with sodium silicate or potassium silicate as binder
FR2464766A1 (en) * 1979-09-07 1981-03-20 Ahlsell Ir Ab Foundry mould or core mfr. from granular and/or fibrous material - using silicate binder and surfactant to increase strength and facilitate disintegration after use
JPH02263775A (en) * 1989-04-04 1990-10-26 Daiso Co Ltd Production of inorganic expanded material
US5601777A (en) * 1993-10-27 1997-02-11 Georg Fischer Giessereianlagen Ag Process for compressing granular material in a molding box
DE19632293A1 (en) * 1996-08-09 1998-02-19 Thomas Prof Dr In Steinhaeuser Process for the production of core moldings for foundry technology

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Publication number Priority date Publication date Assignee Title
GB857132A (en) * 1958-01-16 1960-12-29 Midland Silicones Ltd Improvements in or relating to foundry sand compositions
GB1332943A (en) * 1971-05-27 1973-10-10 Nii Tekh Avtomobil Promy Device for forced filling of moulding and core boxes with moulding amterial
US4162238A (en) * 1973-07-17 1979-07-24 E. I. Du Pont De Nemours And Company Foundry mold or core compositions and method
GB2013121A (en) * 1977-11-29 1979-08-08 Fordath Ltd Treating Foundry Sand
GB2016483A (en) * 1978-03-09 1979-09-26 Ahlsell Ir Ab Method at the making of bodies of granular and/or fibrous material with sodium silicate or potassium silicate as binder
FR2464766A1 (en) * 1979-09-07 1981-03-20 Ahlsell Ir Ab Foundry mould or core mfr. from granular and/or fibrous material - using silicate binder and surfactant to increase strength and facilitate disintegration after use
JPH02263775A (en) * 1989-04-04 1990-10-26 Daiso Co Ltd Production of inorganic expanded material
US5601777A (en) * 1993-10-27 1997-02-11 Georg Fischer Giessereianlagen Ag Process for compressing granular material in a molding box
DE19632293A1 (en) * 1996-08-09 1998-02-19 Thomas Prof Dr In Steinhaeuser Process for the production of core moldings for foundry technology

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Also Published As

Publication number Publication date
DE19951622A1 (en) 2001-05-23
NO334154B1 (en) 2013-12-23
BR0015090B1 (en) 2011-01-25
SK286218B6 (en) 2008-05-06
HU225725B1 (en) 2007-07-30
WO2001030517A3 (en) 2001-12-27
SK5722002A3 (en) 2003-03-04
BR0015090A (en) 2002-06-11
HUP0203178A2 (en) 2003-05-28
EP1095719A2 (en) 2001-05-02
DE29925011U1 (en) 2008-10-02
TR200201117T2 (en) 2002-12-23
NO20021961L (en) 2002-04-25
MXPA02004239A (en) 2003-10-06
SI1095719T1 (en) 2006-08-31
DE29925010U1 (en) 2008-09-04
ES2255932T3 (en) 2006-07-16
CZ297087B6 (en) 2006-09-13
EP1095719B1 (en) 2005-12-28
CZ20021415A3 (en) 2003-01-15
US7022178B1 (en) 2006-04-04
DE50011962D1 (en) 2006-02-02
WO2001030517A2 (en) 2001-05-03
ATE314168T1 (en) 2006-01-15
NO20021961D0 (en) 2002-04-25

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