WO2013044904A1 - Beschichtungsmassen für anorganische giessformen und kerne und deren verwendung und verfahren zum schlichten - Google Patents

Beschichtungsmassen für anorganische giessformen und kerne und deren verwendung und verfahren zum schlichten Download PDF

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Publication number
WO2013044904A1
WO2013044904A1 PCT/DE2012/000952 DE2012000952W WO2013044904A1 WO 2013044904 A1 WO2013044904 A1 WO 2013044904A1 DE 2012000952 W DE2012000952 W DE 2012000952W WO 2013044904 A1 WO2013044904 A1 WO 2013044904A1
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WO
WIPO (PCT)
Prior art keywords
sizing composition
weight
sizing
composition according
parts
Prior art date
Application number
PCT/DE2012/000952
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German (de)
English (en)
French (fr)
Inventor
Michael Kloskowski
Peter WACHTARCZYK
Carolin WALLENHORST
Original Assignee
Ask Chemicals 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 Ask Chemicals Gmbh filed Critical Ask Chemicals Gmbh
Priority to MX2014003804A priority Critical patent/MX2014003804A/es
Priority to BR112014007623A priority patent/BR112014007623A2/pt
Priority to RU2014117287/02A priority patent/RU2014117287A/ru
Priority to EP12773196.6A priority patent/EP2760607B1/de
Priority to KR1020147010340A priority patent/KR20140071439A/ko
Priority to US14/348,232 priority patent/US20140255601A1/en
Priority to CN201280047222.8A priority patent/CN103826775A/zh
Priority to IN901KON2014 priority patent/IN2014KN00901A/en
Priority to JP2014532247A priority patent/JP2014527915A/ja
Publication of WO2013044904A1 publication Critical patent/WO2013044904A1/de
Priority to ZA2014/01614A priority patent/ZA201401614B/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/18—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents
    • B22C1/186—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents contaming ammonium or metal silicates, silica sols
    • B22C1/188—Alkali metal silicates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/18—Finishing

Definitions

  • the invention relates to a coating composition for molds and their use.
  • the coating composition is suitable for cores and molds, especially those made using water glass as a binder.
  • the coating composition comprises certain clay materials. Likewise, a method for sizing is claimed.
  • Casting molds are obtainable from a refractory material, for example quartz sand, under molding into a casting mold and setting by means of a suitable binder in order to ensure sufficient mechanical strength of the casting mold.
  • a refractory molding material for example quartz sand
  • the refractory molding base material is preferably present in a free-flowing form, so that it can be filled into a suitable mold and compacted there.
  • the binder produces a firm cohesion between the particles of the molding base material, so that the casting mold obtains the required mechanical stability.
  • both organic and inorganic binders can be used, the curing of which can be carried out in each case by cold or hot processes.
  • Cold processes are processes which are carried out essentially at room temperature without heating the casting mold.
  • the curing is usually carried out by a chemical reaction, which is triggered for example by the fact that a gas is passed as a catalyst through the mold to be cured.
  • hot processes the molding composition is heated to a sufficiently high temperature after molding to expel, for example, the solvent contained in the binder or to initiate a chemical reaction by which the binder is cured, for example, by crosslinking.
  • Binder systems have been developed which can be cured by the introduction of gases. Such a system is for example in the GB
  • the waterglass-based binder system consists of an aqueous alkali silicate solution and a hygroscopic base, such as sodium hydroxide, added in a ratio of 1: 4 to 1: 6.
  • the water glass has a modulus S1O2 / M2O of 2.5 to 3.5 and a solids content of 20 to 40%.
  • the binder system also contains a surface-active substance, such as silicone oil, which has a boiling point> 250 ° C.
  • the binder system is mixed with a suitable refractory material, such as quartz sand, and then injected into a core box with a core shooter.
  • a suitable refractory material such as quartz sand
  • the hardening of the molding material mixture takes place by removal of the water still contained.
  • the drying or hardening of the casting mold can also take place under the action of microwaves.
  • inorganic binders also have disadvantages compared to organic binders, for example the known inorganic binders have a low stability of the casting molds produced therewith against high humidity or against water. For a storage of the molded body over a longer period, as usual with organic binders, not secured possible.
  • 7,770,629 B2 proposes a molding material mixture which contains a water-glass-based binder in addition to a refractory molding base material. A proportion of a particulate metal oxide is added to the molding material mixture. Precipitated silica or fumed silica is preferably used as the particulate metal oxide.
  • the methods described for the production of casting molds and cores usually also include the application of a refractory mold coating, which is also called sizing, at least on those surfaces of the basic mold which come into contact with the cast metal.
  • a refractory mold coating which is also called sizing
  • the purpose of the mold coatings is to influence the molding surface, to improve the casting appearance, to influence the casting metallurgically and / or to avoid casting defects.
  • the commonly used sizing agents contain as base materials e.g. Clays, quartz, kieselguhr, cristobalite, tridymite, aluminum silicate, zirconium silicate, mica, chamotte and also coke and graphite. These precursors are the purportive part of the sizings which cover the mold surface and close the pores against the penetration of the cast metal.
  • the surface of the casting mold can be modified and matched to the properties of the metal to be processed.
  • the size can be used to improve the appearance of the casting by creating a smooth surface because the size compensates for irregularities caused by the size of the grains of the molding material.
  • the sizing may metallurgically influence the casting by, for example, selectively transferring additives to the casting at the surface of the casting via the sizing which enhance the surface properties of the casting.
  • the sizings form a layer which chemically isolates the casting mold from the liquid metal during casting. This prevents any adhesion between the casting and the casting mold so that the casting can be easily removed from the casting mold.
  • the sizing can also be used to specifically control the heat transfer between the liquid metal and the casting mold in order, for example, to effect the formation of a specific metal structure by the cooling rate.
  • the curing of the inorganic binder used is nowadays increasingly via a condensation reaction initiated by elevated temperatures, in which the formation of the binder bridges takes place via the splitting off of water.
  • this is a reversible reaction, i. by contact and reaction with water, the bonds can be split again, with the extent of this back-reaction greatly different from the
  • Process parameters for core production is dependent. Among the process parameters typically used in series production (fast cycle times, high temperatures), the casting molds lose their strength through contact with water and partly also through contact with alcohol, the surface softens and the casting mold loses its shape.
  • the invention had the object of proposing a sizing, by which a defect-free coating, especially inorganic cores and molds, can be ensured without negatively affecting the stability of the cores or molds and thus the processing and storage.
  • the sizing composition according to the invention is provided according to a preferred embodiment in the form of a paste or a suspension.
  • the sizing composition contains a carrier liquid.
  • the viscosity of the size is in a range usual for finishing with a substantially lower solids content.
  • the size can be brought into the application state without the use of special additives or larger amounts of water.
  • the total clay content of the size of the above clays is 0.1 to 4.0% by weight, preferably 0.5 to 3.0% by weight and more preferably 1.0 to 2.0% by weight.
  • Palygorskit is a magnesium-aluminum hydrosilicate, which under the CAS no. 8031-18-3 is listed. Palygorskit is part of attapulgite marketed commercial products. Although attapulgite contains palygorskite, it should not be used because of other offensive components and missing rod-shaped crystals. Palygorskit is preferably in the form of rod-shaped crystals. The particles preferably have the following dimensions: 1 to 3 ⁇ , in particular 1.5 to 2 ⁇ in length at a diameter of 1 to 5 nm, in particular about 3 nm. Palygorskit has other properties than attapulgite.
  • Palygorskit does not swell or shrink, is shear stable and leads in a slurry with water or water-based liquids with (A2) or (A3), for example, at low levels such as 0.01 to 3 wt.%, To a pseudoplastic or thixotropic liquid , When the shear stops, the higher initial viscosity quickly recovers. With shear the viscosity is low. Is attapulgite with smectites, S1O2, and / or CaCO 3 and other impurities charged.
  • palygorskite e.g. the product Acti-Gel® 208 from the company "Active Minerals” can be used, for example Bentone CT from the company “Elementis” can be used as the hectorite.
  • This natural raw material consists predominantly (> 80%) of montmorillonite, accompanying minerals can be quartzite, calcite, feldspar and mica.
  • the sizing composition e.g. as the basecoat or topcoat, and the desired layer thickness of the coating made from the sizing composition, further characteristic parameters of the sizing composition may be adjusted.
  • the carrier liquid can be proportionately or completely formed by water.
  • the carrier liquid is the constituent which is vaporizable at 160 ° C and atmospheric pressure and in this sense, by definition, that which is not solids content.
  • the carrier liquid contains greater than 50% by weight, preferably 75% by weight, in particular greater than 80% by weight, optionally greater than 95% by weight, of water.
  • the other ingredients in the carrier liquid may be organic solvents.
  • Suitable solvents are alcohols, including polyalcohols and
  • the solids content of the ready-to-use size composition is preferably adjusted in the range from 10 to 90% by weight, in particular greater than 80% by weight to 85% by weight.
  • the size composition according to the invention may contain further constituents customary for sizes.
  • the sizing composition according to the invention comprises at least one powdered refractory material.
  • This refractory material serves to close the pores in a casting mold against the penetration of the liquid metal.
  • the refractory thermal insulation between the mold and liquid metal is achieved by the refractory thermal insulation between the mold and liquid metal.
  • refractory material conventional refractory materials can be used in metal casting. Examples of suitable refractories are quartz, alumina,
  • Zirconium oxide aluminum silicates, such as pyropyllite, kyanite, andalusite or chamotte, zirconium, ciconsilicates, olivine, talc, mica, graphite, coke, feldspar, diatomite, kaolins, calcined kaolins, kaolinite, metakaolinite, iron oxide and / or bauxite.
  • the refractory material is provided in powder form.
  • the grain size is chosen so that in the coating a stable structure is created and that the
  • the refractory material has an average particle size (measured by means of light scattering in accordance with DIN / ISO 13320) in the range from 0.1 to 500 ⁇ m, particularly preferably in the range from 1 to 200 ⁇ m.
  • Particularly suitable materials for refractory materials are those which have a melting point which is at least 200 ° C. above the temperature of the liquid metal and, irrespective of this, do not react with the metal.
  • the proportion of refractory (e.g. in the form of sale paste, based on the solids content of the size composition, is preferably greater than 70 wt .-%, preferably greater than 80 wt .-%, more preferably greater than 85 wt .-% selected.
  • the fraction of the refractory material for use after dilution (eg the paste) with water is less than 80% by weight, according to another embodiment less than 70% by weight and according to further embodiment selected less than 60 wt .-%.
  • the size according to the invention may comprise at least one setting agent.
  • the adjusting agent causes an increase in the viscosity of the size, so that the solid components of the size in the suspension do not or only to a small extent decrease.
  • both organic and inorganic materials or mixtures of these materials can be used.
  • Suitable inorganic adjusting agents are, for example, strongly swellable clays, such as sodium bentonite.
  • organic thickening agents may alternatively or additionally be selected, since these can be dried to the extent that they hardly give off any more water upon contact with the liquid metal after application of the protective coating.
  • organic adjusting agents are, for example, swellable polymers in question, such as carboxymethyl, methyl, ethyl, hydroxyethyl and
  • Hydroxyproylcellulose mucilages, polyvinyl alcohols, polyvinylpyrrolidone, pectin, gelatin, agar agar, polypeptides and / or alginates.
  • the proportion of the adjusting agent, based on the total size composition is preferably selected to be from 0.1 to 5% by weight, preferably from 0.5 to 3% by weight, particularly preferably from 1 to 2% by weight.
  • the size according to the invention comprises as further constituent at least one binder.
  • the binder allows a better fixation of the size or of the protective coating produced from the size on the wall of the mold.
  • the binder increases the mechanical stability of the protective coating so that less erosion is observed under the action of the liquid metal.
  • the binder cures irreversibly, so that an abrasion-resistant coating is obtained.
  • binders which do not soften on contact with atmospheric moisture. All binders which are used in sizes can be present per se. In this case, both inorganic and organic binders can be used.
  • clays can be used as binders, in particular bentonite.
  • the fraction of the binder is preferably selected in the range from 0.1 to 20% by weight, particularly preferably 0.5 to 5% by weight, based on the solids content of the sizing composition.
  • the size contains a proportion of graphite. This supports the formation of lamellar carbon at the interface between casting and mold.
  • the proportion of graphite is preferably selected in the range of 1 to 30 wt .-%, particularly preferably 5 to 15 wt .-%, based on the solids content of the size.
  • Graphite has a favorable effect on the surface quality of castings during iron casting.
  • the size composition according to the invention may also contain further components customary for sizing, for example wetting agents, defoamers, pigments, dyes or biocides.
  • the proportion of these further constituents in the ready-to-use coating composition is preferably less than 10% by weight, preferably less than 5% by weight and more preferably less than 1% by weight.
  • Suitable wetting agents are, for example, anionic and non-anionic surfactants, in particular those having an HSB value of at least 7.
  • An example of such a wetting agent is disodium dioctyl sulfosuccinate.
  • the wetting agent is preferably used in an amount of 0.01 to 1 wt .-%, preferably 0.05 to 0.3 wt .-%, based on the ready-to-use sizing composition.
  • Defoamers or anti-foaming agents, can be used to prevent foaming in the preparation of the sizing composition or in applying it. Foaming on application of the sizing composition can result in uneven layer thickness and holes in the coating.
  • defoamers for example, silicone or mineral oil can be used.
  • the defoamer is preferably present in an amount of from 0.01 to 1% by weight, preferably from 0.05 to 0.3% by weight, based on the ready-to-use sizing composition.
  • usual pigments and dyes may be used in the sizing composition of the present invention. These are added in order to achieve a different contrast, for example between different layers, or to bring about a greater separation effect of the size of the casting.
  • pigments are red and yellow iron oxide and graphite.
  • dyes are commercially available dyes such as the Luconyl® color series of BASF AG, Ludwigshafen, DE.
  • the dyes and pigments are preferably contained in an amount of 0.01 to 10 wt .-%, preferably from 0.1 to 5 wt .-%, based on the solids content of the sizing composition.
  • the sizing composition contains a biocide to prevent bacterial attack, thereby avoiding a negative impact on the rheology and binding power of the binding agents.
  • the carrier liquid contained in the sizing composition is formed essentially from water with respect to the weight, ie the sizing composition according to the invention is provided in the form of a so-called water sizing.
  • suitable biocides are formaldehyde, 2-methyl-4-isothiazolin-3-one (MIT), 5-chloro-2-methyl-4-iosthiazolin-3-one (CIT) and 1, 2-benzisothiazolin-3-one (BIT).
  • MIT, BIT or a mixture thereof are used.
  • the biocides are usually used in an amount of from 10 to 1000 ppm, preferably from 50 to 500 ppm, based on the weight of the ready-to-use sizing composition.
  • the size composition of the invention can be prepared by conventional methods.
  • a sizing composition according to the present invention can be prepared by initially charging water and breaking up a clay acting as a sizing agent using a high shear stirrer. Subsequently, the refractory components, pigments and dyes and the metallic additive are stirred until a homogeneous mixture is formed. Finally, wetting agents, antifoams, biocides and binders are added.
  • the sizing composition according to the invention can be prepared and sold as ready-to-use sizing.
  • the size according to the invention can also be prepared and sold in concentrated form. In this case, to provide a ready-to-use size, the amount of carrier liquid necessary to adjust the desired viscosity and density of the size is added.
  • the size composition according to the invention can also be provided and sold in the form of a kit, wherein, for example, the solid component (s) and the solvent component (s) are present side by side in separate containers.
  • the solid component (s) can be provided as a powdery solid mixture in a separate container.
  • liquid component (s) to be used such as binders, wetting agents, wetting agents / defoamers, pigments, dyes and biocides, may again be present in a separate container in this kit.
  • the solvent component (s) may either comprise any additional components to be used, for example in a common container, or they may be present in a separate container separate from other optional ingredients. To prepare a ready-to-use size, the appropriate amounts of the solid component, the optional further components and the solvent component are mixed together.
  • the sizing compositions according to the invention are suitable for coating casting molds.
  • the term "mold” includes all types of bodies necessary to make a casting, such as cores, molds and molds.
  • the use of the size compositions according to the invention also includes partial coating of casting molds.
  • the sizings are used for metal working molds obtainable from inorganic molding material mixtures comprising at least one refractory molding base, a water glass based binder, and preferably a portion of a metal oxide selected from the group of silica, in particular amorphous silica, alumina, titania or Zinc oxide and mixtures thereof, which is preferably particulate and in particular particle sizes of less than 300 ⁇ (sieve analysis).
  • Amorphous silica is e.g. via precipitation processes starting from water glass, which is obtainable by digesting quartz sand with sodium carbonate or potassium carbonate. Depending on the process conditions, S1O2 produced in this way is called precipitated silica.
  • Another important production variant is the production of so-called pyrogenic S1O2 in a oxyhydrogen flame, starting from liquid
  • Chlorosilanes such as silicon tetrachloride.
  • Preferred molding material mixtures are the subject of the claims of WO 2006/024540.
  • the casting molds to be coated thus typically comprise a) greater than 80% by weight of a refractory molding base (including additives which behave like refractory molding bases), b) from 0.01 to 5% by weight of hardened waterglass as a binder, and c) from 0 to 5 % By weight if appropriate above metal oxide or metal oxides.
  • the invention relates to a process for the production of sized casting molds for metal processing with application of the sizes to the above partially or completely cured inorganic molding material mixtures.
  • the application or provision of the sizes can be carried out as follows:
  • the mold When immersed as an application method, the mold, in the mold cavity of which optionally a base coat has been applied, is immersed for about 2 seconds to 2 minutes in a container filled with a ready-to-use sizing composition according to the invention.
  • the mold is then removed from the sizing composition and excess sizing composition drained from the mold.
  • the time taken to drain the excess sizing composition after dipping depends on the flow behavior of the sizing composition used.
  • the sizing composition When spraying as application method commercially available pressure sprayers are used.
  • the sizing composition is filled in a dilute state in a pressure vessel.
  • the sizing can be pressed into a spray gun via the overpressure to be set, where it is sprayed with the aid of separately adjustable atomizing air.
  • the conditions are preferably selected so that the pressure for sizing composition and atomizing air are adjusted to the gun such that the sprayed sizing composition still wet on the mold or the core, but gives a uniform application.
  • the casting mold in the mold cavity of which a base coat has optionally been applied, is poured over with the aid of a hose, a lance or similar instruments with a ready-to-use size composition according to the invention.
  • the mold is completely covered with the sizing composition, the excess sizing composition drains from the mold. The time taken to drain the excess size composition after flooding depends on the flow behavior of the size composition used.
  • the sizing can also be applied by brushing.
  • the carrier liquid contained in the size is then evaporated so that a dry sizing layer is obtained.
  • any conventional drying method may be used, such as air drying, dehumidifying air drying, microwave or infrared radiation drying, convection oven drying, and similar methods.
  • the coated casting mold is dried at 20 to 250 ° C, preferably at 50 to 180 ° C, in a convection oven.
  • the size composition according to the invention is preferably dried by burning off the alcohol or alcohol mixture.
  • the coated casting mold is additionally heated by the heat of combustion.
  • the coated casting mold is dried in the air without further treatment or using microwaves.
  • the size can be applied in the form of a single layer or else in the form of several layers arranged one above the other.
  • the individual layers may be the same or different in their composition.
  • a base coat can be made from a commercially available size which does not contain a metallic additive according to the invention.
  • a primer coating for example, water-based or alcohol-based finishing can be used.
  • the layer which later comes in contact with the liquid metal is always made from the size of the invention.
  • each individual layer can be completely or partially dried after application.
  • the feed prepared from the sizing composition preferably has a dry film thickness of at least 0.1 mm, preferably at least 0.2 mm, more preferably at least 0.45 mm, most preferably at least 0.55 mm.
  • the thickness of the coating is chosen to be less than 1.5 mm.
  • the dry layer thickness here is the layer thickness of the dried coating, which was obtained by drying the sizing composition by substantially complete removal of the solvent component and optionally subsequent curing.
  • the dry layer thickness of the base coat and the top coat are preferably determined by measurement with the wet film thickness comb. If necessary, the casting mold can then be completely assembled. The casting is preferably carried out for the production of iron and steel castings.
  • the core sizes 1 and 2 used had the compositions and physical properties shown in Tables 1 and 2.
  • Dynol® 604 (wetting agent 2) 0.05 0.05 0.05
  • Acticide® MBS (Preservative 2) 0.15 0.15
  • the cast molding was prepared as follows: water is initially introduced and the clay or clays are digested for at least 15 minutes using a high-shear unit and a toothed disc. Subsequently, the refractory components, pigments and dyes are stirred for at least 15 minutes until a homogeneous mixture is formed. Finally, additives such as wetting agents, defoamers and preservatives and the binder are stirred for 5 minutes.
  • the sizes were adjusted to a viscosity suitable for the application in the range of 0.6 Pas for the following tests.
  • the adjustment was carried out by adding appropriate amounts of water to the original composition and subsequent homogenization.
  • the main characteristics are the viscosity, measured with a Brookfield viscometer (DIN EN ISO 2555) and with a DIN 4 mm flow cup (DIN EN ISO 2431), each measured at 20 ° C.
  • Georg Fischer test strip illustrates the behavior of the sized test specimens on thicker core geometries
  • long cores illustrates the behavior of the sized test specimens on thin geometries.
  • Georg Fischer test bars are cuboid test bars measuring 150 mm x 22.36 mm x 22.36 mm.
  • the long cores have dimensions of 13 mm x 20 mm x 235 mm.
  • the composition of the molding material mixture is given in Table 3.
  • the Georg Fischer test bars were prepared as follows: The components listed in Table 3 were mixed in a laboratory paddle mixer (Vogel & Schemmann AG, Hagen, DE).
  • the quartz sand was introduced and added with stirring the water glass.
  • a sodium water glass was used, which had proportions of potassium.
  • the module Si0 2 : M 2 0 of the water glass was about 2.2, where M indicates the sum of sodium and potassium.
  • amorphous silica was added, if necessary, with further stirring.
  • the amorphous silica is pyrogenic silica from RW Silicium.
  • the mixture was then stirred for an additional 1 minute.
  • the molding material mixture was transferred to the storage bin, a H 2.5 hot-box core shooter from Röperwerk-G manmaschinen GmbH, Viersen, DE, whose mold had been heated to 180.degree.
  • the molding material mixture was introduced into the mold by means of compressed air (5 bar) and remained in the mold for a further 35 seconds.
  • compressed air 5 bar
  • hot air 2 bar, 150 ° C on entering the mold
  • the coating compositions were applied to the test bars by dipping, the application parameters are listed in Table 2.
  • the test bars were coated either immediately after removal from the mold or after a 30 minute cooling time.
  • the coated test bars were stored after application of the coating in a drying oven for 30 minutes at 150 ° C.
  • test bars were placed in a Georg Fischer strength tester equipped with a 3-point bending device (DISA Industrie AG, Schaffhausen, CH), and the force was measured, which leads to the breakage of the test bars.
  • the uncoated bending strengths were measured according to the following scheme:
  • the flexural strengths were coated according to the following scheme:
  • coated flexural strengths were measured according to the following scheme - 10 seconds after removal from the oven
  • the quality of the inorganic cores and molds coated with these sizes is sustainably improved and, for example, storage stability of the cores and forms of several days can be achieved without problems.
  • Particularly noteworthy is the fact that despite the unusually high solids content, the viscosity of the size is in a range which is usual for sizing.
  • the size can be brought into the application state without the use of special additives or larger amounts of water.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
  • Paints Or Removers (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
PCT/DE2012/000952 2011-09-30 2012-10-01 Beschichtungsmassen für anorganische giessformen und kerne und deren verwendung und verfahren zum schlichten WO2013044904A1 (de)

Priority Applications (10)

Application Number Priority Date Filing Date Title
MX2014003804A MX2014003804A (es) 2011-09-30 2012-10-01 Composiciones de recubrimiento para moldes y machos de fundición inorgánicos y uso de los mismos y método para encolar.
BR112014007623A BR112014007623A2 (pt) 2011-09-30 2012-10-01 composição de encolamento, uso de uma composição de encolamento, e, método para encolar moldes e machos curados com um aglutinante inorgânico
RU2014117287/02A RU2014117287A (ru) 2011-09-30 2012-10-01 Композиции для покрытия неорганических литейных форм и стерженей, а также их применение и способ обмазки
EP12773196.6A EP2760607B1 (de) 2011-09-30 2012-10-01 Beschichtungsmassen für anorganische giessformen und kerne und deren verwendung und verfahren zum schlichten
KR1020147010340A KR20140071439A (ko) 2011-09-30 2012-10-01 무기물 주조 주형과 주조 심형을 위한 코팅 조성물, 이의 용도 및 사이징 방법
US14/348,232 US20140255601A1 (en) 2011-09-30 2012-10-01 Coating compositions for inorganic casting molds and cores and use thereof and method for sizing
CN201280047222.8A CN103826775A (zh) 2011-09-30 2012-10-01 用于无机的铸模和芯的覆层料及其应用和用于胶料的方法
IN901KON2014 IN2014KN00901A (enrdf_load_stackoverflow) 2011-09-30 2012-10-01
JP2014532247A JP2014527915A (ja) 2011-09-30 2012-10-01 無機鋳型及び中子のためのコーティング組成物及びその使用方法及びサイジングのための方法
ZA2014/01614A ZA201401614B (en) 2011-09-30 2014-03-04 Coating compositions for inorganic casting moulds and cores and use thereof and method for sizing

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WO2021099366A1 (de) 2019-11-22 2021-05-27 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Kerne für den druckguss
JP2021534267A (ja) * 2018-08-13 2021-12-09 ヒュッテネス−アルベルトゥス ヒェーミッシェ ヴェルケ ゲゼルシャフト ミット ベシュレンクテル ハフツング コーティング組成物の使用、及びコーティングによる遠心鋳造型の製造のための対応方法

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CN103394633A (zh) * 2013-08-06 2013-11-20 霍山县东胜铸造材料有限公司 一种冒口涂料的制备方法
CN103394633B (zh) * 2013-08-06 2016-08-17 霍山县东胜铸造材料有限公司 一种冒口涂料的制备方法
WO2018127415A1 (de) 2017-01-04 2018-07-12 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung VERWENDUNG EINER SÄURE ENTHALTENDEN SCHLICHTEZUSAMMENSETZUNG IN DER GIEßEREIINDUSTRIE
DE102017107655A1 (de) 2017-01-04 2018-07-05 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Verwendung einer Säure enthaltenden Schlichtezusammensetzung in der Gießereiindustrie
DE102017107657A1 (de) 2017-01-04 2018-07-05 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Schlichtezusammensetzung, umfassend organische Esterverbindungen und partikuläres, amorphes Siliziumdioxid, zur Verwendung in der Gießereiindustrie
WO2018127413A1 (de) 2017-01-04 2018-07-12 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung SCHLICHTEZUSAMMENSETZUNG FÜR DIE GIEßEREIINDUSTRIE, ENTHALTEND PARTIKULÄRES, AMORPHES SILIZIUMDIOXID UND SÄURE
DE102017107658A1 (de) 2017-01-04 2018-07-05 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Schlichtezusammensetzung für die Gießereiindustrie, enthaltend partikuläres, amorphes Siliziumdioxid und Säure
WO2018127399A1 (de) 2017-01-04 2018-07-12 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung SCHLICHTEZUSAMMENSETZUNG, UMFASSEND ORGANISCHE ESTERVERBINDUNGEN UND PARTIKULÄRES, AMORPHES SILIZIUMDIOXID, ZUR VERWENDUNG IN DER GIEßEREIINDUSTRIE
US11529673B2 (en) 2017-01-04 2022-12-20 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Coating composition for the foundry industry, containing particulate, amorphous silicon dioxide and acid
DE102018004234A1 (de) * 2018-05-25 2019-11-28 Ask Chemicals Gmbh Schlichtezusammensetzung, Verfahren zur Beschichtung einer Gießform und Verwendung der Schlichtezusammensetzung zur Beschichtung einer Gießform
JP2021534267A (ja) * 2018-08-13 2021-12-09 ヒュッテネス−アルベルトゥス ヒェーミッシェ ヴェルケ ゲゼルシャフト ミット ベシュレンクテル ハフツング コーティング組成物の使用、及びコーティングによる遠心鋳造型の製造のための対応方法
JP7288499B2 (ja) 2018-08-13 2023-06-07 ヒュッテネス－アルベルトゥス ヒェーミッシェ ヴェルケ ゲゼルシャフト ミット ベシュレンクテル ハフツング コーティング組成物の使用、及びコーティングによる遠心鋳造型の製造のための対応方法
WO2021099366A1 (de) 2019-11-22 2021-05-27 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Kerne für den druckguss
DE102019131676A1 (de) * 2019-11-22 2021-05-27 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Kerne für den Druckguss

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