WO2008110378A1 - Composition pour la fabrication de masselottes - Google Patents

Composition pour la fabrication de masselottes Download PDF

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Publication number
WO2008110378A1
WO2008110378A1 PCT/EP2008/002036 EP2008002036W WO2008110378A1 WO 2008110378 A1 WO2008110378 A1 WO 2008110378A1 EP 2008002036 W EP2008002036 W EP 2008002036W WO 2008110378 A1 WO2008110378 A1 WO 2008110378A1
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WO
WIPO (PCT)
Prior art keywords
composition
mass
composition according
proportion
binder
Prior art date
Application number
PCT/EP2008/002036
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German (de)
English (en)
Inventor
Henning Rehse
Udo Skerdi
André Gerhards
Franz-Josef Kroth
Andreas Marpert
Original Assignee
AS Lüngen 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 AS Lüngen GmbH filed Critical AS Lüngen GmbH
Priority to CN200880008384.4A priority Critical patent/CN101652204B/zh
Priority to DE112008000701.2T priority patent/DE112008000701B4/de
Publication of WO2008110378A1 publication Critical patent/WO2008110378A1/fr

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/088—Feeder heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B22D7/06—Ingot moulds or their manufacture
    • B22D7/10—Hot tops therefor

Definitions

  • the present invention relates to a composition for producing insulating and / or exothermic feeders and other filling funnel and feed elements for molds.
  • Casting assemblies for metal casting usually consist of a casting shell, a funnel system, feeders, molds, mandrels and other components.
  • metal is first poured into the casting shell of the casting assembly, from where it flows through the funnel system to the molding assembly, where it eventually cools and solidifies. The solid metal part is then exposed by separation from the mold assembly.
  • Feeder comes to the function of reservoirs.
  • the feeders contain excess molten metal to fill the metal-free spaces formed by the cooling of the metal and the concomitant shrinkage with metal.
  • the feeders must accordingly have the property of keeping the molten metal hot and in a liquid state for a certain period of time.
  • feeders have insulating and / or exothermic properties.
  • Insulating feeders are typically made based on an insulating material / binder composition that is cured into feeders.
  • Exothermic feeders are generally made based on a filler metal-oxidizer-binder composition. The exothermic property of the feeders is due to the exothermic reaction of the Metal with the oxidizing agent to the metal oxide causes, wherein the chemical reaction is induced by the waste heat of the liquid metal during casting.
  • casting cores themselves desired.
  • the casting mold or parts thereof (so-called pads) or individual casting cores or parts thereof may be made on the basis of an insulating material / binder composition or insulating material / filler metal-oxidizing agent-binder composition.
  • refractory hollow spheres can be used as insulating material in the production of insulating and / or exothermic feeders.
  • binders a wide variety of organic products can be used, preferably so-called cold box curing binders, hot box curing binders or so-called no-bake curing binders.
  • the said curing binders are differentiated according to the methods as they are cured.
  • Coldbox curing binders are cured by means of a gas which reacts catalytically with the binder.
  • cold box curing binders include phenol-urethane resins or epoxy-acrylic resins, which are cured by means of amines or SO 2 as a gas component.
  • Hot-box curing binders for example liquid phenolic, urethane or amino resins, are cured in hot form at relatively high temperatures in a very short time with the addition of a latent, ie particularly reactive, heat curing agent such as ammonium stearate.
  • No-bake curing binders for example based on urethane, phenol or Alkyd resins are usually cured by means of an acid-active hardener system at room temperature.
  • EP 0 913 215 B1 describes a composition for producing feeders containing hollow aluminum silicate balls and a cold box curing binder.
  • An advantage of the cold box, hot box or no-bake curing binder-containing compositions for the production of feeders is that they can be processed in a relatively short time by means of appropriate curing process to hardened feeders, whereby a relatively fast production of feeders is guaranteed.
  • the cold box, hot box and no-bake curing binders used must be used in relatively large amounts in the edible compositions to ensure sufficient strength of the feeders made from these compositions. This is especially true when materials are used as the insulating material, which can absorb the binder.
  • the relatively high content of the feeder to cold box, hot box or no-bake cure binders made using the above compositions results in a correspondingly high emission of gases and decomposition products which burn when burned in the feeder in which the binder burns on the one hand detrimental to the Affect the properties of the casting and on the other hand burden the ambient air.
  • the object of the present invention is therefore to provide a composition by means of which insulating and / or exothermic feeders and other Fantrichter- and feed elements for molds can be produced, which have a relatively low emissivity of gases and decomposition products during combustion, which adversely affect the properties of the casting.
  • refractory hollow spheres i) refractory hollow spheres; and ii) a binder composition comprising an aqueous
  • composition comprising refractory hollow spheres and a binder composition comprising an aqueous dispersion of a thermoplastic polymer and a swelling binder, insulating and / or exothermic feeders and other filling funnel and feed elements for molds can be produced which have a relatively high strength with a relatively low use of plastic polymer as a binder.
  • the significantly reduced content of plastic polymer leads to a significant
  • composition of the invention Reduction in emissions of gases and decomposition products in the case of waste burns, which may adversely affect the properties of the castings.
  • Another advantage of the composition of the invention is that it can be used free of organic solvents.
  • the composition according to the invention is odorless, which has an advantageous effect both in the preparation of feeders from the composition according to the invention and in the use of feeders produced by means of the composition according to the invention.
  • the refractory hollow spheres used in the composition according to the invention are materials capable of absorbing or absorbing binding agents, relatively high strength values can be achieved with a relatively small use of plastic-based binders. Even when burning feeders, which were produced by means of a composition according to the invention containing binder absorbent hollow balls, therefore, relatively small amounts of emissions, which may have an adverse effect.
  • the term "swelling binder” is understood as meaning materials which are capable of absorbing water and increasing volume by removal of water
  • the water-swellable swelling binder of the composition according to the invention can, in principle, be any inorganic or organic substance which is present under
  • the swelling binder to be used is advantageously matched to the type of refractory hollow spheres and to the nature of the thermoplastic polymer.
  • the swelling binder is selected from the group consisting of starches, kaolinite- and / or montmorillonite-containing minerals, in particular bentonites, layered clays, phyllosilicates, pulp liquor liquors, sugar molasses and superabsorbents.
  • the inorganic swelling binders such as bentonites and layer clays, may in particular be preferred, since these do not lead to emission development during the consumption of feed.
  • organic source binders such as starches, sulfite waste liquors pulp production,
  • starches is understood to mean, in particular, so-called swelling starches which are obtainable, for example, by hydrothermal treatment of native starches.
  • Starch strengths are known in the art (see Römpp, Lexikon Chemie, 10th Edition, Georg Thieme Verlag) and numerous processes for their preparation (WO 03/054024 A1)
  • swelling starches are commercially available.
  • starches are understood in particular to be dextrins obtained by dry heating of native starches Acid action can be obtained.
  • cereal starches for example maize or wheat starch
  • tuber starches for example potato starch
  • Dextrins are known in the art (see Römpp, Lexikon Chemie, 10th edition, Georg Thieme Verlag).
  • the swelling binder is present in the composition according to the invention in a proportion of 1 to 20% by weight, preferably in a proportion of 2 to 15% by weight and more preferably in a proportion of 4 to 10 Mass .-%.
  • the proportions referred to relate to the dry matter of the swelling binder. It has been shown that, with a proportion of the swelling binder in the composition of less than 1% by weight, the proportion of thermoplastic polymer in the composition can only be reduced slightly in order to obtain corresponding strength values of feeds prepared from the composition according to the invention. In addition, it has been found that when the swelling binder is contained in the composition of the present invention in a proportion of more than 20 mass%, the content of the thermoplastic polymer in the composition of the present invention can not be further reduced if sufficient strength values are to be obtained.
  • composition of the invention contains an aqueous dispersion of a thermoplastic polymer, ie, that the chemical composition of the plastic polymer is tuned to the dispersibility in the aqueous phase, wherein dispersing can also be used for dispersing.
  • thermoplastics are known in the art (see Römpp, Lexikon Chemie, 10th edition, Georg Thieme 5 publisher).
  • the thermoplastic has
  • Plastic polymer has a minimum film-forming temperature (MFT) according to DIN 53787 of less than 100 0 C and greater than 45 0 C. Furthermore, it preferably has a dynamic glass transition temperature (T ⁇ ma ⁇ ) according to DIN 53445 / DIN 7724 of> 150 0 C.
  • MFT minimum film-forming temperature
  • T ⁇ ma ⁇ dynamic glass transition temperature
  • Control heat distortion temperature or the dynamic glass transition temperature (T ⁇ max) of the polymer by selecting the monomers and their proportions in a predictable manner (see Vieweg-Esser, Kunststoff-Handbuch, volume IX, polymethacrylates, pp. 333-340, C.).
  • the thermoplastic polymer is preferably free of reactive chemical groups that can lead to crosslinking of polymer chains of the thermoplastic polymer.
  • the thermoplastic polymer is thus preferably a plastic which can be repeatedly melted by increasing the temperature and can be solidified again and again by lowering the temperature.
  • thermoplastic polymer be free of phenol or phenolic moieties, such as, for example, free of phenolic resins.
  • the JO binder composition is preferably in the form of a
  • the binder composition is prepared by mixing a finished formed thermoplastic polymer, preferably dispersed in the aqueous phase, with the swelling binder.
  • thermoplastic polymer contained in the composition according to the invention may, for example, be an acrylate polymer which for example, by homopolymerization of acrylic monomers, preferably of the general formula H 2 C 1 R 2 COOR 2 , in which R 1 and R 2 independently of one another are H or an alkyl radical having 1 to 4 carbons, for example butyl acrylate, propyl ester, ethyl ester or methyl ester, or acrylic acids, for example acrylic acid, or a vinyl acetate polymer.
  • acrylic monomers preferably of the general formula H 2 C 1 R 2 COOR 2 , in which R 1 and R 2 independently of one another are H or an alkyl radical having 1 to 4 carbons, for example butyl acrylate, propyl ester, ethyl ester or methyl ester, or acrylic acids, for example acrylic acid, or a vinyl acetate polymer.
  • thermoplastic polymer of the aqueous dispersion is a copolymer, it has a relatively low coagulation tendency in the composition of the present invention which could cause a decreased film-forming tendency of the plastic polymer. According to a preferred embodiment of the composition according to the invention, therefore, the plastic polymer of the aqueous dispersion
  • the copolymer may be both a random copolymer, a gradient copolymer, an alternating copolymer, a block copolymer and a graft copolymer.
  • copolymers examples include copolymers of acrylic esters, preferably of butyl acrylates, propyl esters, ethyl esters and methyl esters, or acrylic acids, for example acrylic acid, with other monomers, such as styrene or vinyl ethers. Further preferred copolymers are ethylene-vinyl acetate polymers.
  • an acrylic ester in particular a butyl acrylate, preferably a - n-butyl ester
  • the copolymer is a butyl acrylate / acrylonitrile copolymer, preferably a n-butyl acrylate / acrylonitrile copolymer, wherein also acrylic acid tert. butyl ester and isobutyl ester may preferably be contained as monomer building blocks in the copolymer. It may be preferable if the butyl acrylate is contained in the copolymer in a proportion of 20 to 40 mass%.
  • the copolymer may be a copolymer of a substituted or unsubstituted acrylic acid.
  • the aqueous dispersion of a thermoplastic polymer is contained in the composition in an amount of from 1 to 25% by mass, preferably in an amount of from 5 to 20% by mass and more preferably in a proportion of 7 to 15% by mass, based on an aqueous dispersion with a proportion of 40% by mass, of the plastic polymer. That is, in the composition of the present invention, the thermoplastic resin polymer according to the above first restriction is contained in a proportion of 0.4 to 10 mass. -% is included. It could be stated that when the proportion of aqueous dispersion of the plastic polymer in the composition is less than 1 mass .-%, molded articles made from the composition do not have sufficient strength values.
  • Water may be contained in the composition of the present invention in a proportion of preferably 0.6 to 15 mass%.
  • the refractory hollow spheres contained in the composition according to the invention are preferably spheres with a hollow core and with a closed outer wall.
  • the closed outer wall prevents the binder composition from penetrating into the hollow spheres, which could lead to an undesirable increased use of binder composition.
  • the hollow spheres may generally have any wall thickness, but hollow spheres having a wall thickness of about 10% of the hollow sphere diameter are preferred.
  • Refractory spherical particles which have an open-pored or closed-pored pore structure, such as e.g. preferably pumice, so-called aerogels or corresponding particles based on fumed silica, since it has been found that the binder composition of the composition according to the invention shows a relatively low tendency to penetrate into pore systems and thus only a relatively small increase in binder composition required when using such hollow spheres is.
  • the refractory hollow spheres are contained in a proportion of 10 to 90 wt .-%, preferably in a proportion of 30 to 70 wt .-% and particularly preferably in a proportion of 40 to 60 mass. -%.
  • Refractory hollow spheres preferred according to the invention are formed from silicon oxide or aluminum oxide.
  • the refractory hollow spheres are aluminum silicate (aluminosilicate) hollow spheres, preferably hollow spheres, which are referred to in the literature and commercially as Cenospheres or Extendospheres and derived from fly ash.
  • refractory hollow spheres and volcanic ash can be used, depending on the degradation region containing a different proportion of Al 2 O 3 or SiO 2 .
  • An example of a particularly preferred volcanic ash is the so-called Pozzolana.
  • the aluminum silicate hollow spheres have an alumina content below 38 mass .-%, preferably a content between 20 and 38 mass .-%.
  • Aluminum silicate hollow spheres with a relatively low alumina content are in the
  • the content of aluminum silicate hollow sphere of aluminum oxide is greater than 38 mass%, preferably greater than 40 mass%, preferably greater than 50 mass%, more preferably greater than 70 mass%, and most preferably greater than 90 mass%.
  • the content of aluminum silicate hollow spheres of aluminum oxide is between 38 and 59% by mass.
  • the refractory hollow spheres have a diameter of up to 3 mm. however According to the invention, hollow spheres with an average diameter of less than 1 mm are preferred.
  • the composition comprises a refractory filler, preferably a molding sand. Quartz sand, chromite sand, zircon sand or olivine sand are preferred according to the invention, quartz sand being particularly preferred.
  • the refractory filler may be present in the composition in a proportion of up to 70% by mass, preferably in a proportion of up to 20% by mass, more preferably in a proportion of from 5 to 15 measures -%.
  • a typical composition provided by the present invention comprises 10 to 90 mass% of the refractory hollow spheres, 0 to 20 mass% of the refractory filler, 1 to 20 mass% of the swelling binder, preferably a swelling starch and / or a dextrin and from 1 to 25% by weight of the aqueous dispersion of a thermoplastic polymer, preferably of a n-butyl acrylate / acrylonitrile copolymer, based on an aqueous dispersion having a content of 40% by weight of the polymer.
  • composition according to the invention may, according to a further preferred embodiment, comprise a metal, an oxidation for the oxidation of the metal and / or an inorganic fluorine flux.
  • the composition of the present invention when the composition of the present invention is to be used to make exothermic feeders, the composition comprises a metal selected from the group consisting of aluminum, magnesium and silicon, preferably aluminum.
  • the metal may be present, for example, in the form of a powder or in the form of granules.
  • the proportion of the metal in the composition is designed.
  • the metal is contained in the composition at a level of up to 40% by mass, preferably at a level of from 5 to 30% by mass, and more preferably at a level of from 10 to 20% by mass.
  • the composition according to the invention may contain an oxidant.
  • Preferred oxidants according to the invention are compounds selected from the group consisting of alkali metal salts, alkaline earth metal salts, for example barium salts, alkali metal oxides and alkaline earth metal oxides, for example barium oxide.
  • the oxidant may also be a compound selected from the group consisting of iron oxides and manganese oxides, for example Fe 2 O 3 or potassium permanganate.
  • the oxidant may according to a further preferred embodiment of the composition according to the invention be present in an amount which is sufficient to completely oxidize the metal, so that in principle no atmospheric oxygen is needed in the oxidation of the metal.
  • composition according to the invention contains an inorganic fluorine flux
  • this compound is preferably selected from the group consisting of cryolite (Na3AlF 6 ) and aluminum fluoride.
  • the inorganic flux is preferably present in the composition according to the invention in an amount of up to 5% by mass, preferably in a proportion of 1 to 3 mass. -%.
  • a typical composition provided by the present invention for producing, for example, insulating and exothermic or exothermic feeders preferably contains 10 to 90% by weight of the refractory hollow spheres, 0 to 70% by mass of the refractory filler, 1 to 20% by mass. of the swelling binder, preferably a swelling starch and / or a dextrin, 5 to 40% by mass of the metal and 1 to 25% by mass of the aqueous dispersion of a thermoplastic polymer, preferably an n-butyl acrylate / acrylonitrile copolymer to an aqueous dispersion containing 40% by weight of the plastic polymer.
  • the composition according to the invention for producing, for example, an insulating / exothermic or exothermic feeder the composition contains 10 to 90% by weight of aluminosilicate hollow spheres, preferably with an amount of
  • the present invention further relates to a method for producing an insulating and / or exothermic feeder 20 as well as other filling funnel and feeding elements for molds, comprising the steps of
  • the composition is introduced by injecting the composition into the mold by means of a core shooter. This ensures a rapid filling of the mold without the formation of unwanted cavities.
  • the curing of the binder composition of the invention Composition by passing heated air through the composition. It has been found that when the composition of the present invention is cured by passing heated air through the composition, the respective moldings, such as feeders, have very high dimensional accuracy and high strength values. In addition, by passing heated air through the composition, very high cure rates with respect to cure or through cure are obtained so that this process can also find advantageous utility in automated production.
  • the binder composition is heated by means of the heated air to a temperature which corresponds at least to the film-forming temperature of the thermoplastic polymer.
  • Binder composition also be carried out by means of heating the mold.
  • the curing of the binder composition takes place in two separate process steps.
  • the binder composition is so far cures until the Fortn redesign is safe to handle. It should be understood under safe handling of the molding that the molding can be transported from one place to another without sagging or breaking through. After the shaped body has been cured to the point of safe handling, it is removed from the mold and then completely cured by heating in a second step.
  • Binder composition until safe handling of the molding by passing heated air through the composition of the invention.
  • the complete curing of the shaped body is then preferably carried out in an oven.
  • the present invention further relates to the use of the composition according to the invention for the production of insulating and / or exothermic feeders and other filling funnel and feed elements for molds or for the production of molds or casting cores or parts thereof.
  • the present invention further relates to a feeder, prepared from or prepared using the composition according to the invention.
  • An insulating feeder was made by the following composition:
  • a SG Extendospheres, The PQ, Corporation, aluminum silicate hollow spheres with an alurinary oxide content of 20-38 mass%, absorption in oil (per 100 g): 57.5, density: 0.4 g / ml, particle size of 10 -350 ⁇ m.
  • b Mixture of one part Ecocure 100 EP 3931, and two parts Ecocure 290/6.
  • c quartz sand, H31.
  • the abovementioned constituents of the composition were first mixed in a mixer to give a homogeneous mixture.
  • the homogeneous mixture was then injected by means of a shooting device having a shooting pressure of 6 kg / cm 2 in a feeder metal mold '.
  • the catalyst gas dimethylisopropylamine was passed through the composition and the riser was cured in the mold over a period of 30 seconds.
  • the hardened feeder was then removed from the feeder mold.
  • thermoplastic resin Aqueous dispersion of a thermoplastic
  • the abovementioned constituents of the composition according to the invention were first of all processed in a mixer to give a homogeneous mixture. Thereafter, the homogeneous mixture was injected by means of a core shooting device with a firing pressure of 6 kg / cm 2 in a metal feeder mold. After the feeder mold was filled with the homogeneous mixture, the feeder by passing 150 0 C hot air over a period of 60 seconds has been hardened by the sleeve mix. The feeder is cured was then removed from the mold and fully cured in an oven at a temperature of 150 0 C over a period of 30 minutes.
  • An insulating feeder was prepared analogously to the composition and the method according to Example 1, wherein as an aqueous dispersion of a thermoplastic polymer in this case, 8 wt .-% of an aqueous dispersion of a Styrene / acrylate copolymer was used with a solids content of 40 mass .-%.
  • inventive compositions according to Examples 1 and 2 have a content of 3.2% by mass of thermoplastic material (8% by mass of a 40% polymer dispersion).
  • composition according to Comparative Example 1 has a proportion of 14% by weight of polymeric plastic binder (cold box curing binder).
  • the proportion of the inventive composition of polymeric plastic binder is thus reduced compared to the composition of Comparative Example 1 by 77% by mass. Nevertheless, the feeders produced by means of the inventive compositions according to Examples 1 and 2 have approximately the same strength value of approximately 10 kN as the feed produced according to Comparative Example 1.

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  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
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  • Compositions Of Macromolecular Compounds (AREA)
  • Ceramic Products (AREA)

Abstract

Composition pour la fabrication de masselottes isolantes et / ou exothermes, ainsi que pour d'autres trémies d'alimentation et éléments d'amenée pour des moules. L'objet de la présente invention est la mise au point d'une composition à l'aide de laquelle peuvent être fabriqués des masselottes isolantes et / ou exothermes ainsi que d'autres trémies d'alimentation et éléments d'amenée pour des moules, qui, lors de la combustion des corps moulés, présentent un taux d'émission de gaz et de produits de décomposition relativement faible, pouvant avoir un effet néfaste sur les propriétés de la pièce coulée. A cet effet, ladite composition contient des billes creuses réfractaires ainsi qu'une composition liante constituée d'une dispersion aqueuse d'un polymère synthétique thermoplastique et d'un agent liant gonflant.
PCT/EP2008/002036 2007-03-15 2008-03-13 Composition pour la fabrication de masselottes WO2008110378A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN200880008384.4A CN101652204B (zh) 2007-03-15 2008-03-13 用于制造加料器的组合物
DE112008000701.2T DE112008000701B4 (de) 2007-03-15 2008-03-13 Zusammensetzung zur Herstellung von Speisern, deren Verwendung, Verfahren zur Herstellung von Speisern unter Verwendung der Zusammensetzung und so hergestellte Speiser.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007012489A DE102007012489A1 (de) 2007-03-15 2007-03-15 Zusammensetzung zur Herstellung von Speisern
DE102007012489.0 2007-03-15

Publications (1)

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WO2008110378A1 true WO2008110378A1 (fr) 2008-09-18

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CN (1) CN101652204B (fr)
DE (2) DE102007012489A1 (fr)
WO (1) WO2008110378A1 (fr)

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WO2013150159A2 (fr) * 2012-08-03 2013-10-10 Chemex Gmbh Compositions exothermiques moulables et masselotte obtenue à partir desdites compositions
CN104014747A (zh) * 2014-05-29 2014-09-03 朱小英 一种重力铸造涡轮增压器压气机壳的工艺
CN104014714A (zh) * 2014-05-29 2014-09-03 朱小英 一种铝合金铸造型砂
WO2017144363A1 (fr) * 2016-02-23 2017-08-31 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Utilisation d'une composition comme composant de liant pour la fabrication d'éléments d'alimentation selon le procédé de la boîte froide, procédé correspondant et éléments d'alimentation
DE102017131255A1 (de) 2017-12-22 2019-06-27 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Verfahren zur Herstellung eines metallischen Gussstücks oder eines ausgehärteten Formteils unter Verwendung aliphatischer Polymere umfassend Hydroxygruppen
US10919086B2 (en) 2015-12-01 2021-02-16 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Method for producing refractory composite particles and feeder elements for the foundry industry, corresponding feeder elements and uses
DE102015108235B4 (de) 2015-05-26 2021-09-02 GTP Schäfer Gießtechnische Produkte GmbH Verfahren zur Herstellung von Oberflächenbereiche von in der Gießereitechnik eingesetzten Gießmodellen abdeckenden Formteilen
DE102015107330B4 (de) 2015-05-11 2021-10-28 GTP Schäfer Gießtechnische Produkte GmbH Herstellung von Speisereinsätzen im 3D-Druck

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DE102010009148B4 (de) * 2010-02-24 2013-10-10 TDH - GmbH Technischer Dämmstoffhandel Wärmedämmendes feuerfestes hochtemperaturbeständiges Formteil
DE102010009146B4 (de) 2010-02-24 2012-12-27 TDH - GmbH Technischer Dämmstoffhandel Plastische feuerfeste Masse und feuerfester Mörtel und deren Verwendung
DE102010009142B4 (de) * 2010-02-24 2012-02-16 TDH - GmbH Technischer Dämmstoffhandel Plastische feuerfeste hochtemperaturbeständige Masse und feuerfester hochtemperaturbeständiger Mörtel und deren Verwendung
DE102010009144B4 (de) 2010-02-24 2013-06-13 TDH - GmbH Technischer Dämmstoffhandel Wärmedämmendes feuerfestes Formteil
DE102010044466B4 (de) * 2010-09-06 2012-12-20 TDH - GmbH Technischer Dämmstoffhandel Verfahren zur Herstellung eines wärmedämmenden Brandschutzformteils und ebensolches Brandschutzformteil
CN103567357A (zh) * 2013-10-11 2014-02-12 铜陵市经纬流体科技有限公司 抗脉纹覆膜砂及其制备方法
CN103521688A (zh) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 一种钾长石铸造型砂及其制备方法
CN104014715B (zh) * 2014-05-29 2016-04-13 朱小英 一种铝合金铸造型砂的制备方法
DE102015225227A1 (de) * 2015-12-15 2017-06-22 Robert Bosch Gmbh Speiser für insbesondere aus Gusseisen bestehende Gussstücke
CN105921683A (zh) * 2016-05-26 2016-09-07 合肥市田源精铸有限公司 一种用于镁合金铸件的型砂及其制备方法

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WO2013150159A3 (fr) * 2012-08-03 2014-06-19 Chemex Gmbh Compositions exothermiques moulables et masselotte obtenue à partir desdites compositions
CN104014747A (zh) * 2014-05-29 2014-09-03 朱小英 一种重力铸造涡轮增压器压气机壳的工艺
CN104014714A (zh) * 2014-05-29 2014-09-03 朱小英 一种铝合金铸造型砂
DE102015107330B4 (de) 2015-05-11 2021-10-28 GTP Schäfer Gießtechnische Produkte GmbH Herstellung von Speisereinsätzen im 3D-Druck
DE102015108235B4 (de) 2015-05-26 2021-09-02 GTP Schäfer Gießtechnische Produkte GmbH Verfahren zur Herstellung von Oberflächenbereiche von in der Gießereitechnik eingesetzten Gießmodellen abdeckenden Formteilen
US10919086B2 (en) 2015-12-01 2021-02-16 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Method for producing refractory composite particles and feeder elements for the foundry industry, corresponding feeder elements and uses
WO2017144363A1 (fr) * 2016-02-23 2017-08-31 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Utilisation d'une composition comme composant de liant pour la fabrication d'éléments d'alimentation selon le procédé de la boîte froide, procédé correspondant et éléments d'alimentation
DE102017131255A1 (de) 2017-12-22 2019-06-27 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Verfahren zur Herstellung eines metallischen Gussstücks oder eines ausgehärteten Formteils unter Verwendung aliphatischer Polymere umfassend Hydroxygruppen
WO2019121637A1 (fr) 2017-12-22 2019-06-27 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Procédé de fabrication d'une pièce de fonte métallique ou d'une pièce moulée durcie au moyen de polymères aliphatiques comprenant des groupes hydroxy
US11253913B2 (en) 2017-12-22 2022-02-22 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Process for producing a metallic casting or a cured shaped part using aliphatic polymers comprising hydroxy groups

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CN101652204A (zh) 2010-02-17

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