EP2139626B1 - Core-sheath particle for use as a filler for feeder masses - Google Patents

Core-sheath particle for use as a filler for feeder masses Download PDF

Info

Publication number
EP2139626B1
EP2139626B1 EP08717855A EP08717855A EP2139626B1 EP 2139626 B1 EP2139626 B1 EP 2139626B1 EP 08717855 A EP08717855 A EP 08717855A EP 08717855 A EP08717855 A EP 08717855A EP 2139626 B1 EP2139626 B1 EP 2139626B1
Authority
EP
European Patent Office
Prior art keywords
core
particles
filler material
feeder
μm
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.)
Active
Application number
EP08717855A
Other languages
German (de)
French (fr)
Other versions
EP2139626A1 (en
Inventor
Ulrich Lanver
Klaus Dieter Riemann
Jürgen HÜBERT
Hermann Lieber
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.)
CHEMEX GmbH
Original Assignee
CHEMEX 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
Priority to DE102007012660A priority Critical patent/DE102007012660B4/en
Application filed by CHEMEX GmbH filed Critical CHEMEX GmbH
Priority to PCT/EP2008/053114 priority patent/WO2008113765A1/en
Publication of EP2139626A1 publication Critical patent/EP2139626A1/en
Application granted granted Critical
Publication of EP2139626B1 publication Critical patent/EP2139626B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00Casting ingots, e.g. from ferrous metals
    • B22D7/06Ingot moulds or their manufacture
    • B22D7/10Hot tops therefor
    • B22D7/102Hot tops therefor from refractorial material only
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/08Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/084Breaker cores
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/08Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/088Feeder heads

Abstract

The present invention relates to a core-sheath particle for use as a filler for feeder masses for the production of feeders, comprising (a) a carrier core having a size of 30 μm to 500 μm and composed of a material, which is resistant up to a maximum temperature of 1400°C and contains no polystyrene, (b) a sheath surrounding the core composed of or comprising (b1) particles having a maximum D 50 value for grain size of 15 μm and resistant up to a temperature of at least 1500°C, and (b2) a binding agent binding the particles to one another and to the carrier core, wherein the core-sheath particle is resistant to temperatures up to 1450°C.

Description

  • The present invention relates to a pourable filling material comprising a multiplicity of core-shell particles for use as filler for feeder masses for producing feeders, to processes for producing pourable filling materials according to the invention, to corresponding feeder masses and corresponding feeders and to corresponding uses. Further objects of the present invention will become apparent from the following description and the appended claims.
  • The term "feeder" as used herein includes both feeder shells, feeder inserts and feeder caps, and heating pads.
  • In the production of metallic moldings in the foundry, liquid metal is poured into a semolina mold and solidifies there. The solidification process is associated with a reduction in the volume of metal and it is therefore regularly feeder, ie open or closed spaces used in or on the mold to compensate for the volume deficit in the solidification of the casting and to prevent a voids formation in the casting. Feeders are connected to the casting or vulnerable casting area and are usually located above and / or on the side of the mold cavity.
  • In Speisermassen for the production of edible products and in the feeders themselves produced therefrom today lightweight fillers are regularly used, which should cause a good insulating effect at a high temperature resistance.
  • DE 10 2005 025 771 B3 discloses insulating feeders comprising ceramic hollow spheres and glass hollow spheres.
  • In EP 0 888 199 81 Speisers are described which contain hollow aluminum silicate microspheres as insulating refractory material.
  • EP 0 913 215 B1 discloses feed compositions comprising hollow aluminosilicate microspheres having an alumina content of less than 38% by weight.
  • WO 9423865 A1 discloses a feeder composition comprising hollow alumina-containing microspheres having an alumina content of at least 40% by weight.
  • WO 2006/058347 A2 discloses feed compositions comprising as fillers core-shell microspheres having a core of polystyrene. The use of polystyrene, however, leads to undesirable emissions in the foundry.
  • DE 10 2004 042535 A1 relates to a molding material mixture for the production of casting molds for metal processing, a process for the production of casting molds, casting molds obtained by the process and their use. For the production of the molds, a refractory mold base and a water glass based binder is used. Added to the binder is a portion of a particulate metal oxide selected from the group consisting of silica, alumina, titania and zinc oxide. WO 98/29208 A1 discloses a process for producing particles coated with a waterglass layer.
  • In industrial practice, hollow spheres are often used today, which come from the fly ash of coal power plants or are produced synthetically. For use in Speisem suitable hollow balls are not fully available. It was therefore the object of the present invention to provide a lightweight filler, which is a substitute for the currently favored Hollow balls can be used. The specified lightweight filler should meet the following primary requirements:
    • Thermal stability even at temperatures of more than 1450 ° C, preferably at temperatures of more than 1500 ° C;
    • Sufficient mechanical stability even at high temperatures of z. B. 1400 ° C;
    • Little or no dust adhesion;
    • Low bulk density.
  • The object is achieved according to the invention by a pourable filling material comprising a plurality of core-shell particles for use as a filler for feeder masses for the production of feeders comprising
  1. (a) a carrier core, the
    has a size in the range of 30 microns to 500 microns
    and
    consists of a material which is stable up to a maximum temperature of 1400 ° C and contains no polystyrene,
  2. (b) a core enclosing shell consisting of or comprising
    • (b1) particles having a D 50 value for the grain size of not more than 15 μm, preferably not more than 10 μm, which are up to a temperature of at least 1500 ° C. preferably at least 1600 ° C are stable,
      such as
    • (b2) a binder which binds the particles to each other and to the carrier core,
wherein the core-shell particle is stable up to a temperature of at least 1450 ° C, preferably at least 1500 ° C.
  • The invention is based on the recognition that it is possible by encasing carrier materials (which are used as a carrier core) with a z. B. for use as a filler in Speisermassen insufficient temperature resistance in core-shell particles to convert, which are up to a temperature of at least 1450 ° C, but usually at least 1500 ° C resistant. Required for this is the wrapping of the carrier core with particles having a D 50 - value for the grain size of a maximum of 15 microns, considered per se up to a temperature of at least 1500 ° C, preferably 1600 ° C are resistant.
  • In the core-shell particles to be used according to the invention, the carrier core has a size, d. H. a maximum length in the range of 30 μm to 500 μm; it consists of a material which is maximum resistant to a temperature of 1400 ° C and contains no polystyrene, preferably no organic, but preferably exclusively inorganic constituents. The carrier core is preferably spherical.
  • In the context of the present text, a particle or material is considered to be stable if it neither melts below a given temperature nor softens or decomposes while losing its spatial shape.
  • The carrier core (a) of a core-shell particle to be used according to the invention preferably consists of a ceramic or a glass.
  • Preferably, the carrier core (a) is a hollow sphere or a porous particle, hollow sphere or porous particle again preferably consisting of a ceramic or a glass. Examples of preferred usable as the carrier core (a) Materials are fine-pored blown glasses, as they are for. B. under the name Poraver by Dennert Poraver GmbH or z. B. under the name omega bubbles from Omega Minerals Germany GmbH are available and hollow glass microspheres, such as. B. 3M Scotchlite K20 from 3M Specialty Materials available.
  • In core-shell particles to be used according to the invention, said particles (b1) of shell (b) preferably comprise one or more materials or consist of one or more materials selected from the group consisting of refractory materials (according to DIN 51060), preferably from the group consisting of: alumina, boron nitride, silicon carbide, silicon nitride, titanium boride, titanium oxide, yttrium oxide and zirconium oxide and mixed oxides, eg Cordierite or mullite.
  • In core-shell particles to be used according to the invention, the binder (b2) is preferably selected from the group consisting of:
    • Cold box binder, preferably a polyurethane producible from a benzyl ether resin and a polyisocyanate,
    • Hot box binders,
    • Strength,
    • Polysaccharides, and
    • Water glass.
  • Kem shell particles to be used according to the invention can be used in refractory materials or materials, eg. As such for use in industrial furnace construction or to improve the fire protection in buildings. They can also be used in or as Wärmeisoliermaterialien, z. In the construction industry or the foundry industry.
  • Preferably, the core-shell particles to be used according to the invention are part of a pourable filling material which is suitable for use as a filler for feeder masses for the production of feeds. Such a pourable filling material according to the invention regularly comprises a multiplicity of core-shell particles described above (with the prediction being true with regard to the preferred embodiment of the core-shell particles) and optionally further filling substances.
  • In a free-flowing filler material according to the invention, the support core (a) in the plurality of core-shell particles, considered individually, preferably has a mean particle size MK in the range from 60 μm to 380 μm. The mean size is determined in accordance with VDG leaflet P27 (October 1999).
  • The bulk density of the particles used as Trägerkeme by itself is preferably in the range of 85 g / L to 500 g / L. The bulk density of the carrier cores (a) is preferably determined before they are coated with the particles (b1) and the binder (b2) and optionally other constituents of the shell. In the pourable filling material according to the invention, preferably at least 90% by weight of the particles (b1) in the plurality of core-shell particles, based on the total weight of the particles (b1), have a maximum particle size of 45 μm. Accordingly, pulverulent (ie fine, polydisperse) bulk materials are suitable for coating Trägerkeme (a), in which more than 90 wt .-% of the particles contained in the powder have a particle size of at most 45 microns. The particle size of the particles in a corresponding powder is determined with Streulichtphotometem, z. B. by means of a Coulter scattered light photometer. As a further characteristic index often a D50 value is given, which corresponds to a mean grain size. A selection of powders, which is particularly suitable as a coating material (coating material) for coating the carrier cores, are summarized in the following table: Al 2 O 3 BN SiC Si3N4 TiB2 TiO2 Y2O3 ZrO2 Melting point [° C] about 2050 about 3000 about 2300 Zers. ca. 1900 Zers. about 2900 about 1850 about 2410 about 2600 max / micron <45 <10 <45 <45 <45 D 50 / μm about 12 about 9 about 5 ca.1,5 ca.6,5 "max" means: 90% by weight of the particles contained in the powder in question has a particle size below the stated value.
    "Dec." means: decomposition.
  • A pourable filler according to the invention preferably has a bulk density of less than 0.6 g / cm 3 (ie 600 g / L). A pourable filling material according to the invention which comprises core-shell particles to be used according to the invention can be prepared by mixing carrier cores (a) with the (refractory) powder of particles (b1) in the presence of a binder (b2). In a corresponding process according to the invention for producing a free-flowing filler material according to the invention, the following steps are carried out:
    • Providing carrier cores of a size in the range of 30 μm to 500 μm, which consist of a material which is maximum resistant up to a temperature of 1400 ° C,
    • Providing particles of a mean grain size of not more than 15 μm, preferably not more than 10 μm, which are stable up to a temperature of at least 1500 ° C, preferably at least 1600 ° C,
    • Contacting the carrier core with said particles in the presence of a binder such that the particles become bound to the carrier core and to each other and encapsulate single or all of the carrier core.
  • With regard to the configuration of preferred carrier cores, preferred particles and preferred binders, the statements made above with regard to the core-shell particles to be used according to the invention and the filling materials according to the invention apply correspondingly.
  • The present invention also relates to a feeder mass for the production of feeders, consisting of or comprising: core-shell particles to be used according to the invention (as described above, preferably in an embodiment described above as preferred) or a pourable filler material according to the invention (as described above, preferably in US Pat an embodiment referred to above as preferred) and a binder for bonding the core-shell particles or the pourable filling material. With respect to the binder, the above statements apply to preferred binders for the core-shell particles accordingly; It is preferred if both for connecting the Trägerkeme (a) with the particles (b1) and for binding the core-shell particles or the pourable material, a cold-box binder (preferably each based on a benzyl ether resin and a polyisocyanate ), particularly preferably an identical binder is used.
  • An edible mass according to the invention can be designed as an exothermic feeder mass and then regularly comprises, in addition to the constituents mentioned, an easily oxidizable metal and an oxidizing agent therefor, which are intended for exothermic reaction with one another.
  • The present invention also relates to feeders comprising a feeder mass according to the invention. Feeders according to the invention preferably have a density of less than 0.7 g / cm 3 .
  • Further aspects of the present invention relate to the use of the pourable filling material according to the invention (as described above, preferably in a preferred embodiment) as an insulating filling material in a feeder mass or in a feeder.
  • Furthermore, the present invention also relates to the use of a feeder mass according to the invention for producing an insulating or exothermic feeder.
  • For the production of a feeder according to the invention is a pourable according to the invention. Filling material, a binder suitable according to the invention (for example, cold box binder, see above) and optionally mixed other ingredients, the resulting mixture is formed into a feeder and cured the shaped feeder. The molding process preferably takes place by the slurry process, the green state process, the cold box process or the hot box process.
  • The invention is explained in more detail below with reference to examples:
  • A Preparation of core-shell particles to be used according to the invention (bulk material) Embodiment 1
  • 700 g of Poraver (standard grain size 0.1-0.3, Dennert Poraver GmbH) are initially charged in a BOSCH Profi 67 mixer and mixed with 120 g of cold box binder (Hüttenes-Albertus: benzyl ether resin based on of activator 6324 / gas resin 6348). 300 g of silicon carbide powder (D 50 value for grain size: <5 microns) are added and the whole mixed homogeneously. Finally, about 0.5 ml of dimethylpropylamine are added to cure the binder. After a few seconds they are formed core-shell particles as bulk material for further use.
  • Embodiment 2
  • The carrier core used is 800 g of omega bubbles (from Omega Minerals GmbH, grain size <0.5 mm) as the carrier material in a suitable mixer of the type BOSCH Profi 67, and 120 g of Cold Box binder (Hüttenes-Albertus : Benzyl ether resin based on activator 6324 / gas resin 6348) evenly wetted. 200 g of alumina powder (D 50 value for grain size: about 12 microns) are added and the whole mixed homogeneously. Finally, about 0.5 ml of dimethylpropylamine are added to cure the binder. After a few seconds, the core-shell-shell particles formed are present as bulk material for further use.
  • B Production of feeder compounds and feeder caps and other profiled bodies: Embodiment "insulating"
  • The bulk material produced according to embodiment 1 or 2 is homogeneously mixed with cold box binder (Hüttenes-Albertus: benzyl ether resin based on activator 6324 / gas resin 6348). From the resulting mixture, feeder caps and other profile tablets (a) are stamped and (b) shot with core shooters (e.g., Röper, Laempe). Curing takes place in each case by addition of dimethylpropylamine.
  • Exemplary embodiment "exothermic insulating"
  • A mixture of 30 parts by weight (by weight) of the bulk material produced according to Example 1 and 2 and 70 parts by weight of a conventional aluminothermic mixture is homogeneously mixed with cold box binder (Hüttenes-Albertus: benzyl ether resin based on activator 6324 / gas resin 6348) , From the resulting mixture are feeder caps and others Profile molding (a) tamped and (b) shot with core shooting machines (eg Röper, Laempe). Curing takes place in each case by addition of dimethylpropylamine.
  • C die trials:
  • Feeder caps according to the embodiments of B were checked with their so-called cube tests on their applicability. In these experiments, a casting in the form of a cube, using a module-compatible feeder cap to be void-free.
  • A safer density feed could be detected for all embodiments ("insulating", embodiments 1 and 2, "exothermic insulating", embodiments 1 and 2). Also in the respective residual feeders (above the cubes) in each case one compared to reference feeders improved voiding behavior was determined.
  • Claims (14)

    1. A free flowing filler material for use as a filler for feeder masses for the production of feeders, comprising a plurality of core-shell particles comprising
      (a) a carrier core which
      has a size ranging from 30 µm to 500 µm and
      consists of a material which is stable up to a maximum temperature of 1400 °C and contains no polystyrene,
      (b) a shell enveloping the core and consisting of or comprising
      (b1) particles with a D 50 particle size value of a maximum of 15 µm which are stable up to a temperature of at least 1500 °C
      and
      (b2) a binder which binds the particles to one another and to the carrier core,
      wherein the core-shell particle being stable up to a temperature of at least 1450 °C.
    2. A free flowing filler material according to Claim 1, wherein the carrier core (a) consists of ceramic or glass.
    3. A free flowing filler material according to one of the preceding claims, wherein the carrier core (a) is a hollow sphere or a porous particle.
    4. A free flowing filler material according to one of the preceding claims, wherein said particles (b1) of the shell (b) comprise one or more materials or consist of one or more materials which are selected from the group consisting of refractory materials, and preferably from the group consisting of: aluminium oxide, boron nitride, silicon carbide, silicon nitride, titanium boride, titanium oxide, yttrium oxide and zirconium oxide.
    5. A free flowing filler material according to one of the preceding claims, wherein the binder (b2) is selected from the group consisting of:
      - cold box binder, preferably a polyurethane which can be prepared from a benzyl ether resin and a polyisocyanate,
      - hot box binder,
      - starch,
      - polysaccharides, and
      - water glass.
    6. A free flowing filler material according to one of the preceding claims, wherein the carrier cores (a) in the plurality of core-shell particles have a mean particle size MPS ranging from 60 µm to 380 µm.
    7. A free flowing filler material according to one of the preceding claims, wherein at least 90% by weight of the particles (b1) in the plurality of core-shell particles, based on the total weight of the particles (b1), have a particle size of a maximum of 45 µm.
    8. A free flowing filler material according to one of the preceding claims, wherein the filler material has a bulk density of less than 0.6 g/cm3, preferably of less than 0.5 g/cm3.
    9. A process for the preparation of a free flowing filler material according to one of Claims 1 to 8, with the following steps:
      - providing carrier cores with a size ranging from 30 µm to 500 µm which consist of a material which is stable up to a maximum temperature of 1400 °C and does not contain polystyrene,
      - providing particles with a mean particle size of a maximum of 15 µm which are stable up to a temperature of at least 1500 °C, preferably at least 1600 °C,
      - bringing the carrier cores into contact with said particles in the presence of a binder so that the particles are bound to the carrier core and to one another and some or all of the carrier cores are coated.
    10. A feeder mass for the production of feeders, which consists of or comprises:
      - a free flowing filler material according to one of Claims 1 to 8,
      and
      - a binder for binding the free flowing filler material.
    11. A feeder comprising a feeder mass according to Claim 10.
    12. A feeder according to Claim 11, with a density of less than 0.7 g/cm3.
    13. The use of a free flowing filler material according to one of Claims 1 to 8 as an insulating filler material in a feeder mass or a feeder.
    14. The use of a feeder mass according to Claim 10 for the production of an insulating or exothermic feeder.
    EP08717855A 2007-03-16 2008-03-14 Core-sheath particle for use as a filler for feeder masses Active EP2139626B1 (en)

    Priority Applications (2)

    Application Number Priority Date Filing Date Title
    DE102007012660A DE102007012660B4 (en) 2007-03-16 2007-03-16 Core-shell particles for use as filler for feeder masses
    PCT/EP2008/053114 WO2008113765A1 (en) 2007-03-16 2008-03-14 Core-sheath particle for use as a filler for feeder masses

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    SI200830596T SI2139626T1 (en) 2007-03-16 2008-03-14 Core-sheath particle for use as a filler for feeder masses
    PL08717855T PL2139626T3 (en) 2007-03-16 2008-03-14 Core-sheath particle for use as a filler for feeder masses

    Publications (2)

    Publication Number Publication Date
    EP2139626A1 EP2139626A1 (en) 2010-01-06
    EP2139626B1 true EP2139626B1 (en) 2012-02-08

    Family

    ID=39332204

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP08717855A Active EP2139626B1 (en) 2007-03-16 2008-03-14 Core-sheath particle for use as a filler for feeder masses

    Country Status (22)

    Country Link
    US (1) US9352385B2 (en)
    EP (1) EP2139626B1 (en)
    JP (1) JP5361073B2 (en)
    KR (1) KR101429144B1 (en)
    CN (1) CN101657281B (en)
    AT (1) AT544545T (en)
    AU (1) AU2008228269B2 (en)
    BR (1) BRPI0808307B1 (en)
    CA (1) CA2681125C (en)
    DE (1) DE102007012660B4 (en)
    DK (1) DK2139626T3 (en)
    ES (1) ES2379207T3 (en)
    HR (1) HRP20120201T1 (en)
    MX (1) MX2009009887A (en)
    PL (1) PL2139626T3 (en)
    PT (1) PT2139626E (en)
    RU (1) RU2466821C2 (en)
    SI (1) SI2139626T1 (en)
    TW (1) TWI440513B (en)
    UA (1) UA100511C2 (en)
    WO (1) WO2008113765A1 (en)
    ZA (1) ZA200906588B (en)

    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102015120866A1 (en) 2015-12-01 2017-06-01 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Process for producing refractory composite particles and feeder elements for the foundry industry, corresponding feeder elements and uses
    DE102016202795A1 (en) 2016-02-23 2017-08-24 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Use of a composition as a binder component for the preparation of feeder elements by the cold-box process, corresponding processes and feeder elements

    Families Citing this family (14)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN102199040B (en) * 2011-02-16 2013-03-20 朱晓明 Novel sink head brick and its processing technology
    CN104093803A (en) * 2012-02-02 2014-10-08 日东电工株式会社 Flame-retardant heat-conductive adhesive sheet
    KR101411390B1 (en) * 2012-08-07 2014-06-25 주식회사 포스코 Bender bush mounting and demounting apparatus of continuous casting apparatus
    CN103624208A (en) * 2012-08-25 2014-03-12 天津湶钰冒口有限公司 Hot core box molding technology of riser for casting
    CN103480826B (en) * 2012-12-20 2016-03-02 江苏凯特汽车部件有限公司 A kind of pressure cast aluminum-alloy wheel thermal-insulation ceramic cup capable
    DE102015201614A1 (en) 2014-09-10 2016-03-10 Hüttenes-Albertus Chemische Werke GmbH Two-component binder system for the polyurethane cold box process
    DE102016203896A1 (en) 2016-03-09 2017-09-14 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Two-component binder system for the polyurethane cold box process
    DE102016211948A1 (en) * 2016-06-30 2018-01-04 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Core-shell particles for use as filler for feeder masses
    CN106493284B (en) * 2016-11-24 2018-03-02 武汉科技大学 A kind of core shell structure spherical quartz molding sand and preparation method thereof
    CN107335782A (en) * 2017-08-19 2017-11-10 江苏标新工业有限公司 A kind of covering flux of ingot casting high-efficiency cleaning and preparation method thereof
    CN107598090A (en) * 2017-08-24 2018-01-19 合肥正明机械有限公司 A kind of Steel Casting Risers coverture
    DE102017131255A1 (en) 2017-12-22 2019-06-27 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung A method of making a metallic casting or a cured molding using aliphatic polymers comprising hydroxy groups
    DE102018121769A1 (en) 2018-09-06 2020-03-12 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Process for producing a metallic casting or a hardened molded part using an aliphatic binder system
    DE202019102078U1 (en) 2019-03-08 2019-04-23 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Formaldehyde scavenger for binder systems

    Citations (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    JPH01237049A (en) * 1988-03-17 1989-09-21 Nippon Steel Corp Heat insulating refractory grain for molten metal
    JPH0241746A (en) * 1988-07-30 1990-02-09 N T C:Kk Heat insulating material for molten metal and manufacture thereof
    WO2006058347A2 (en) * 2004-11-25 2006-06-01 Alistair Allardyce Elrick Heat resistant bead

    Family Cites Families (22)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US2624556A (en) * 1950-12-02 1953-01-06 Norton Co Heat exchange pebble
    DE2121353A1 (en) * 1971-04-30 1972-11-09 Casting mould riser insert - made from globular insulating material giving improved casting
    JPS5841931B2 (en) * 1978-01-25 1983-09-16 Fukushima Seiko Kk
    GB9308363D0 (en) 1993-04-22 1993-06-09 Foseco Int Refractory compositions for use in the casting of metals
    JPH08117925A (en) * 1994-10-24 1996-05-14 Foseco Japan Ltd:Kk Heat insulating pad for casting, its production and material for producing the pad
    JPH0999340A (en) * 1995-10-03 1997-04-15 Sugitani Kinzoku Kogyo Kk Die member for casting metal, and aggregate used for the die member
    BR9601454C1 (en) 1996-03-25 2000-01-18 Paulo Roberto Menon Process for the production of exothermic and insulating gloves.
    DE19617938A1 (en) 1996-04-27 1997-11-06 Chemex Gmbh Feeder inserts and their manufacture
    ES2134729B1 (en) 1996-07-18 2000-05-16 Kemen Recupac Sa Improvements introduced in object application for a spanish invention patent n. 9601607 for "procedure for the manufacture of exact sleeves and other elements of mazarotaje and feeding for cast molds.
    DK172825B1 (en) * 1996-12-18 1999-08-02 Dti Ind A process for preparing particles coated with a layer of water glass and of blanks comprising such coated particles.
    AU729604B2 (en) * 1996-12-27 2001-02-08 Iberia Ashland Chemical, S.A. Molding sand suitable for manufacturing cores and chill- molds
    US6114410A (en) * 1998-07-17 2000-09-05 Technisand, Inc. Proppant containing bondable particles and removable particles
    JP3374242B2 (en) * 1998-10-09 2003-02-04 正光 三木 Exothermic assembly for castings
    DE19925167A1 (en) 1999-06-01 2000-12-14 Luengen Gmbh & Co Kg As Exothermic feeder mass
    GB0003857D0 (en) * 2000-02-19 2000-04-05 Gough Michael J Refractory compositions
    US20020070020A1 (en) * 2000-12-08 2002-06-13 Nguyen Philip D. Completing wells in unconsolidated formations
    US20030234093A1 (en) * 2002-06-20 2003-12-25 Aufderheide Ronald C. Process for casting a metal
    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
    DE102005011644A1 (en) * 2005-03-14 2006-09-21 AS Lüngen GmbH & Co. KG Exothermic and insulating feeder inserts with high gas permeability
    DE102005025771B3 (en) 2005-06-04 2006-12-28 Chemex Gmbh Insulating feeder and process for its preparation
    DE102006011530A1 (en) * 2006-03-10 2007-09-13 Minelco Gmbh Mold or molding, foundry-molding material mixture and process for its preparation
    DE102006036381A1 (en) 2006-08-02 2008-02-07 Minelco Gmbh Molded material, foundry-molding material mixture and method for producing a mold or a molded article

    Patent Citations (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    JPH01237049A (en) * 1988-03-17 1989-09-21 Nippon Steel Corp Heat insulating refractory grain for molten metal
    JPH0241746A (en) * 1988-07-30 1990-02-09 N T C:Kk Heat insulating material for molten metal and manufacture thereof
    WO2006058347A2 (en) * 2004-11-25 2006-06-01 Alistair Allardyce Elrick Heat resistant bead

    Cited By (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102015120866A1 (en) 2015-12-01 2017-06-01 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Process for producing refractory composite particles and feeder elements for the foundry industry, corresponding feeder elements and uses
    DE102016202795A1 (en) 2016-02-23 2017-08-24 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Use of a composition as a binder component for the preparation of feeder elements by the cold-box process, corresponding processes and feeder elements
    WO2017144363A1 (en) 2016-02-23 2017-08-31 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Use of a composition as a binder component for producing feeder elements according to the cold box process, corresponding method, and feeder elements

    Also Published As

    Publication number Publication date
    MX2009009887A (en) 2010-02-12
    CA2681125C (en) 2015-01-20
    US20110315911A1 (en) 2011-12-29
    HRP20120201T1 (en) 2012-03-31
    US9352385B2 (en) 2016-05-31
    AU2008228269B2 (en) 2013-03-14
    ES2379207T3 (en) 2012-04-23
    CA2681125A1 (en) 2008-09-25
    CN101657281A (en) 2010-02-24
    WO2008113765A1 (en) 2008-09-25
    JP5361073B2 (en) 2013-12-04
    PL2139626T3 (en) 2012-07-31
    TWI440513B (en) 2014-06-11
    DE102007012660B4 (en) 2009-09-24
    RU2466821C2 (en) 2012-11-20
    BRPI0808307A2 (en) 2014-07-08
    AT544545T (en) 2012-02-15
    AU2008228269A1 (en) 2008-09-25
    JP2010521316A (en) 2010-06-24
    BRPI0808307B1 (en) 2017-07-04
    RU2009138236A (en) 2011-04-27
    UA100511C2 (en) 2013-01-10
    EP2139626A1 (en) 2010-01-06
    ZA200906588B (en) 2012-03-28
    TW200936271A (en) 2009-09-01
    SI2139626T1 (en) 2012-05-31
    CN101657281B (en) 2013-01-02
    KR101429144B1 (en) 2014-08-11
    KR20090120516A (en) 2009-11-24
    DE102007012660A1 (en) 2008-09-18
    PT2139626E (en) 2012-03-22
    DK2139626T3 (en) 2012-02-27

    Similar Documents

    Publication Publication Date Title
    US8845802B2 (en) Refractory coating for producing mold coatings
    US8211226B2 (en) Cement-based materials system for producing ferrous castings using a three-dimensional printer
    AU677312B2 (en) A mould and a method for the casting of metals and refractory compositions for use therein
    EP1802409B1 (en) Material mixture for producing casting moulds for machining metal
    US10093581B2 (en) Refractory batch and use thereof
    CA1274859A (en) Insulating lightweight refractory materials
    ES2396113T3 (en) crack resistant refractory composition
    EP0244133B1 (en) Exothermic compositions
    CN1251823C (en) Mould for metal casting
    EP1884300B1 (en) Moulding material, casting moulding material mixture and method for manufacturing a form or blank
    DE112008000701B4 (en) Feeder composition, use thereof, method of making feeders using the composition and feeders thus prepared.
    EP0584335B1 (en) Sprayable refractory composition
    US7812059B2 (en) Production of aerogels containing fillers
    EP0427392B1 (en) Improved method of casting a reactive metal against a surface formed from an improved slurry containing yttria
    EP0056662B1 (en) Extrudable compositions for making refractory cores for sandcasting of ferrous alloys
    US5143777A (en) Ceramic mould material
    CN1111104C (en) Process for fabricating couplings and other elements for hot topping and supply for cast-iron molds, and formulation for producing such couplings and elements
    US4278544A (en) Filter medium for fluid
    EP1986980B1 (en) Impregnated ceramic foam made of recrystallized silicon carbide
    WO1998015373A1 (en) Composite wear part
    EP0315566B1 (en) Compliant layer
    CN1105609C (en) Parts for heating castings
    JP5318301B1 (en) Materials for modeling, functional agents, modeling products and products
    EP2364795A1 (en) Foundry coating composition
    JP4369777B2 (en) High thermal conductivity castable refractory

    Legal Events

    Date Code Title Description
    AK Designated contracting states

    Kind code of ref document: A1

    Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

    17P Request for examination filed

    Effective date: 20091016

    DAX Request for extension of the european patent (to any country) (deleted)
    17Q First examination report despatched

    Effective date: 20100623

    AK Designated contracting states

    Kind code of ref document: B1

    Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: FG4D

    Free format text: NOT ENGLISH

    REG Reference to a national code

    Ref country code: AT

    Ref legal event code: REF

    Ref document number: 544545

    Country of ref document: AT

    Kind code of ref document: T

    Effective date: 20120215

    Ref country code: CH

    Ref legal event code: EP

    Ref country code: CH

    Ref legal event code: NV

    Representative=s name: E. BLUM & CO. AG PATENT- UND MARKENANWAELTE VSP

    REG Reference to a national code

    Ref country code: DK

    Ref legal event code: T3

    REG Reference to a national code

    Ref country code: HR

    Ref legal event code: TUEP

    Ref document number: P20120201

    Country of ref document: HR

    REG Reference to a national code

    Ref country code: PT

    Ref legal event code: SC4A

    Free format text: AVAILABILITY OF NATIONAL TRANSLATION

    Effective date: 20120309

    REG Reference to a national code

    Ref country code: RO

    Ref legal event code: EPE

    REG Reference to a national code

    Ref country code: HR

    Ref legal event code: T1PR

    Ref document number: P20120201

    Country of ref document: HR

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R096

    Ref document number: 502008006344

    Country of ref document: DE

    Effective date: 20120405

    REG Reference to a national code

    Ref country code: ES

    Ref legal event code: FG2A

    Ref document number: 2379207

    Country of ref document: ES

    Kind code of ref document: T3

    Effective date: 20120423

    REG Reference to a national code

    Ref country code: NO

    Ref legal event code: T2

    Effective date: 20120208

    REG Reference to a national code

    Ref country code: SE

    Ref legal event code: TRGR

    REG Reference to a national code

    Ref country code: NL

    Ref legal event code: T3

    REG Reference to a national code

    Ref country code: GR

    Ref legal event code: EP

    Ref document number: 20120400955

    Country of ref document: GR

    Effective date: 20120518

    PGFP Annual fee paid to national office [announced from national office to epo]

    Ref country code: HR

    Payment date: 20120229

    Year of fee payment: 5

    REG Reference to a national code

    Ref country code: SK

    Ref legal event code: T3

    Ref document number: E 11635

    Country of ref document: SK

    LTIE Lt: invalidation of european patent or patent extension

    Effective date: 20120208

    REG Reference to a national code

    Ref country code: HU

    Ref legal event code: AG4A

    Ref document number: E013513

    Country of ref document: HU

    REG Reference to a national code

    Ref country code: PL

    Ref legal event code: T3

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: LT

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20120208

    Ref country code: IS

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20120608

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: LV

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20120208

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: CY

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20120208

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: EE

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20120208

    Ref country code: MC

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20120331

    26N No opposition filed

    Effective date: 20121109

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R097

    Ref document number: 502008006344

    Country of ref document: DE

    Effective date: 20121109

    REG Reference to a national code

    Ref country code: HR

    Ref legal event code: ODRP

    Ref document number: P20120201

    Country of ref document: HR

    Payment date: 20130311

    Year of fee payment: 6

    PGFP Annual fee paid to national office [announced from national office to epo]

    Ref country code: RO

    Payment date: 20130313

    Year of fee payment: 6

    Ref country code: LU

    Payment date: 20130320

    Year of fee payment: 6

    Ref country code: HU

    Payment date: 20130311

    Year of fee payment: 6

    Ref country code: DK

    Payment date: 20130320

    Year of fee payment: 6

    Ref country code: SE

    Payment date: 20130319

    Year of fee payment: 6

    Ref country code: BG

    Payment date: 20130322

    Year of fee payment: 6

    Ref country code: IE

    Payment date: 20130315

    Year of fee payment: 6

    PGFP Annual fee paid to national office [announced from national office to epo]

    Ref country code: GR

    Payment date: 20130319

    Year of fee payment: 6

    PGFP Annual fee paid to national office [announced from national office to epo]

    Ref country code: PT

    Payment date: 20120309

    Year of fee payment: 6

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: MT

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20120208

    REG Reference to a national code

    Ref country code: PT

    Ref legal event code: MM4A

    Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

    Effective date: 20140915

    REG Reference to a national code

    Ref country code: HR

    Ref legal event code: PBON

    Ref document number: P20120201

    Country of ref document: HR

    Effective date: 20140314

    REG Reference to a national code

    Ref country code: DK

    Ref legal event code: EBP

    Effective date: 20140331

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: LU

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20140314

    REG Reference to a national code

    Ref country code: SE

    Ref legal event code: EUG

    REG Reference to a national code

    Ref country code: GR

    Ref legal event code: ML

    Ref document number: 20120400955

    Country of ref document: GR

    Effective date: 20141002

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: SE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20140315

    REG Reference to a national code

    Ref country code: IE

    Ref legal event code: MM4A

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: PT

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20140915

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: RO

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20140314

    Ref country code: GR

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20141002

    Ref country code: IE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20140314

    Ref country code: BG

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20141231

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: HU

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20140315

    Ref country code: HR

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20140314

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: DK

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20140331

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: PLFP

    Year of fee payment: 9

    PGFP Annual fee paid to national office [announced from national office to epo]

    Ref country code: NO

    Payment date: 20160321

    Year of fee payment: 9

    Ref country code: NL

    Payment date: 20160322

    Year of fee payment: 9

    PGFP Annual fee paid to national office [announced from national office to epo]

    Ref country code: FI

    Payment date: 20160318

    Year of fee payment: 9

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: PLFP

    Year of fee payment: 10

    PGFP Annual fee paid to national office [announced from national office to epo]

    Ref country code: GB

    Payment date: 20170327

    Year of fee payment: 10

    REG Reference to a national code

    Ref country code: NO

    Ref legal event code: MMEP

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: FI

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20170314

    REG Reference to a national code

    Ref country code: NL

    Ref legal event code: MM

    Effective date: 20170401

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: NL

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20170401

    Ref country code: NO

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20170331

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: PLFP

    Year of fee payment: 11

    PGFP Annual fee paid to national office [announced from national office to epo]

    Ref country code: BE

    Payment date: 20180322

    Year of fee payment: 11

    Ref country code: AT

    Payment date: 20180320

    Year of fee payment: 11

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R082

    Ref document number: 502008006344

    Country of ref document: DE

    Representative=s name: EISENFUEHR SPEISER PATENTANWAELTE RECHTSANWAEL, DE

    Ref country code: DE

    Ref legal event code: R081

    Ref document number: 502008006344

    Country of ref document: DE

    Owner name: CHEMEX FOUNDRY SOLUTIONS GMBH, DE

    Free format text: FORMER OWNER: CHEMEX GMBH, 31073 DELLIGSEN, DE

    GBPC Gb: european patent ceased through non-payment of renewal fee

    Effective date: 20180314

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: GB

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20180314

    PGFP Annual fee paid to national office [announced from national office to epo]

    Ref country code: CH

    Payment date: 20190325

    Year of fee payment: 12

    Ref country code: FR

    Payment date: 20190326

    Year of fee payment: 12

    Ref country code: CZ

    Payment date: 20190306

    Year of fee payment: 12

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: PFUS

    Owner name: CHEMEX FOUNDRY SOLUTIONS GMBH, DE

    Free format text: FORMER OWNER: CHEMEX GMBH, DE

    REG Reference to a national code

    Ref country code: BE

    Ref legal event code: PD

    Owner name: CHEMEX FOUNDRY SOLUTIONS GMBH; DE

    Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), FUSION; FORMER OWNER NAME: CHEMEX GMBH

    Effective date: 20190308

    PGFP Annual fee paid to national office [announced from national office to epo]

    Ref country code: SI

    Payment date: 20190304

    Year of fee payment: 12

    Ref country code: TR

    Payment date: 20190301

    Year of fee payment: 12

    REG Reference to a national code

    Ref country code: SK

    Ref legal event code: PC4A

    Ref document number: E 11635

    Country of ref document: SK

    Owner name: CHEMEX FOUNDRY SOLUTIONS GMBH, DELLIGSEN, DE

    Free format text: FORMER OWNER: CHEMEX GMBH, DELLIGSEN, DE

    Effective date: 20190521

    REG Reference to a national code

    Ref country code: SI

    Ref legal event code: SP73

    Owner name: CHEMEX FOUNDRY SOLUTIONS GMBH; DE

    Effective date: 20190510

    PGFP Annual fee paid to national office [announced from national office to epo]

    Ref country code: SK

    Payment date: 20190304

    Year of fee payment: 12

    PGFP Annual fee paid to national office [announced from national office to epo]

    Ref country code: ES

    Payment date: 20190424

    Year of fee payment: 12

    Ref country code: DE

    Payment date: 20190404

    Year of fee payment: 12

    REG Reference to a national code

    Ref country code: AT

    Ref legal event code: MM01

    Ref document number: 544545

    Country of ref document: AT

    Kind code of ref document: T

    Effective date: 20190314

    REG Reference to a national code

    Ref country code: BE

    Ref legal event code: MM

    Effective date: 20190331

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: AT

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20190314

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: BE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20190331

    PGFP Annual fee paid to national office [announced from national office to epo]

    Ref country code: PL

    Payment date: 20200117

    Year of fee payment: 13

    Ref country code: IT

    Payment date: 20200325

    Year of fee payment: 13