Class / Patent application number | Description | Number of patent applications / Date published |
164520000 | Utilizing particular mold materials | 63 |
20090095439 | BOROSILICATE GLASS-CONTAINING MOLDING MATERIAL MIXTURES - The invention relates to a molding composition for producing casting molds for the foundry industry, comprising at least:
| 04-16-2009 |
20100147485 | MOLD AND MANUFACTURING METHOD THEREOF, AND MOLDED ARTICLE USING THE MOLD - The object of the present invention is to provide a mold which has low reactivity with molten alloys and which is inexpensive, a method for manufacturing the same and a molded article using the mold. A mold | 06-17-2010 |
20100243197 | PRESSURE CASTING OF ELECTRIC ROTORS - A rotor for an induction motor and a method of preparing same. The method includes making a squirrel-cage rotor made up of a cage and a laminate stack by forming a mold around the stack, heating the stack and introducing a molten metal into the mold such that the molten metal substantially fills a space defined in the stack that corresponds to the cage. In one form, the space includes slots or related channels formed in the stack that upon filling with the molten metal become longitudinal bars that form electric current loops with end rings of the cage. By heating the stack and maintaining it at a temperature high enough to keep the molten metal in a substantially molten state at least long enough for it to flow through the slots of the stack, premature freezing of the molten metal is avoided. In addition, by providing low pressure to the molten metal in conjunction with the elevated temperature in the stack, flow is promoted to ensure a substantially porosity-free, fully dense squirrel-cage for the rotor. | 09-30-2010 |
20110174460 | METHOD OF MANUFACTURING CASTING FOR MOLD FOR MOLDING TIRE - Provided is a method of manufacturing a casting for a mold for molding a tire, wherein twist and warp deformation of each block of the casting is less likely to occur when the casting shrinks, the difference between the degrees of shrinkage of cope and drag is small, the casting, even if large-sized, can be produced in a relatively short molten metal solidifying time, and healthy castings can be easily obtained. A method of manufacturing a casting for a mold for molding a tire of a sectional mold type in which the mold is opened and closed by dividing the mold into a plurality of pieces in the circumferential direction comprises a process of manufacturing each of divided block castings ( | 07-21-2011 |
20120132391 | METHOD FOR GREEN SAND MOLDING - The object of the present invention is to provide a method for green sand molding that prevents a bad casting by producing a mold that does not have a brittle surface. The method comprises the steps of filling the green sand into a flask while fluidizing the green sand by aeration at a pressure between 0.05 and 0.18 MPa, and squeezing the green sand that has been filled in the flask, wherein a mold is produced so that the friability of the mold is 10 or less. The friability is a value that is calculated by the following steps: putting the mold in a rotating cylindrical sieve that has a diameter of 177.8 mm and USA sieve size No. 8, rotating the cylindrical sieve at 57 rpm for 60 seconds, dividing the weight of the sand that has passed through the sieve by the weight of the sand that has been put into the sieve, and multiplying the quotient by 100. | 05-31-2012 |
20130105103 | STRUCTURE FOR CASTING | 05-02-2013 |
20130186589 | MOLD MOLDING METHOD AND MOLD MOLDING MEMBER - An object is to provide a mold molding method which can provide a high general-purpose property and can reduce a usage quantity of molding sand. In a method for molding a mold (sand mold) by self-hardening molding sand using a caking additive, the mold is molded by disposing hollow spheres each formed to have no clearance therein among molding sand mixed with the caking additive. Preferably, the hollow sphere may be formed by working two metal plates to semispherical shapes and then connecting the semispherical-shaped metal plates to each other by welding their respective whole peripheries. A specific gravity of the hollow sphere may be 0.5 to 2.0 times a specific gravity of the molding sand. | 07-25-2013 |
20130220572 | MOLDING ASSEMBLY WITH HEATING AND COOLING SYSTEM - A molding assembly for making molded parts includes a molding tool having conformal fluid lines that follow contours of a molding surface of the molding tool. The conformal fluid lines are defined in the molding tool during casting by sacrificial displacement lines formed by a three-dimensional printer. A temperature control station is coupled to the molding tool and includes a heating and cooling fluid. A valve station regulates fluid flow to the molding tool. | 08-29-2013 |
20130220573 | MOLDING TOOL WITH CONFORMAL PORTIONS AND METHOD OF MAKING THE SAME - A mold core package for forming a molding tool includes a plurality of stacked particulate layers having a binding agent. The plurality of stacked particulate layers form sacrificial walls defining a mold cavity. A sacrificial displacement line and a sacrificial displacement body extend from the mold core package and are adapted to displace a molten material applied to the mold core package. | 08-29-2013 |
20130327494 | Pt Nanotubes - A method for making hollow metal tubes includes a step combining a polyphenylene sulfide-containing resin with a water soluble carrier resin to form a resinous mixture. The resinous mixture is then extruded to form an extruded resinous mixture. The extruded resinous mixture includes polyphenylene sulfide-containing fibers within the carrier resin. The extruded resinous mixture is contacted (i.e., washed) with water to separate the polyphenylene sulfide-containing fibers from the carrier resin. The polyphenylene sulfide-containing fibers are then coated with a metal layer. The hollow metal tubes are then formed by removing the polyphenylene sulfide-containing fibers. | 12-12-2013 |
20140182808 | METHOD OF MANUFACTURING POROUS METAL FOAM - A method of manufacturing a porous metal foam having pores of nano size includes: manufacturing a porous polymer foam containing pores of nano size; and coating metal on the porous polymer foam through electroless plating. The present invention provides porous metal foams which contains nano-sized pores and hence, their specific surface area is maximized owing to the regularly-patterned nanoporous structure formed inside. | 07-03-2014 |
20150013934 | Article With Grouped Grain Patterns - An article includes a first portion having a first grain pattern and a second portion having a second grain pattern different from the first grain pattern. The article is a cast article such as a turbine engine blade. | 01-15-2015 |
20150027658 | Hybrid Ceramic/Sand Core for Casting Metal Engine Parts with Passages or Holes Having a Cross Section Too Small for Sand Casting - A hybrid ceramic/sand casting method of manufacturing a metal part. The method is especially suitable for manufacturing engine cylinder blocks or cylinder head, which have very small internal passages or other very small internal features. These parts are formed using a hybrid core having at least one ceramic section and at least one sand section, with the ceramic section being used to create the internal feature. A mold cavity is created for the part, and the hybrid core is positioned in the mold. Molten metal is introduced into the mold, and after the metal cools, the core is removed, thereby forming the part with the internal feature. | 01-29-2015 |
20150096713 | RAPID TOOLING INSERT MANUFACTURE - A method of fabricating a die cast article is disclosed and includes forming an insert with an additive manufacturing process to define a cavity for generating desired part geometry. The insert is then mounted within a mold tool, material is injected into the cavity to fill the cavity and form a cast article. | 04-09-2015 |
20150306794 | METHOD FOR FABRICATING ULTRA-LOW DENSITY THREE-DIMENSIONAL THIN FILM STRUCTURE BASED ON PHOTO-LITHOGRAPHY - A method for forming an ultra-low density three-dimensional thin film structure made of a solid thin film, including: radiating ultraviolet rays of different patterns in respective predetermined directions to a liquid photosensitive resin bulk so as to harden a portion of the resin bulk; removing the liquid photosensitive resin which is not hardened so as to form a solid photosensitive resin structure; coating the surface of the solid photosensitive resin structure with a thin film; removing the thin film from the outermost surface of the resin bulk so as to expose the solid photosensitive resin; and removing the solid photosensitive resin structure. | 10-29-2015 |
20160184884 | ADDITIVELY MANUFACTURED CASTING ARTICLES FOR MANUFACTURING GAS TURBINE ENGINE PARTS - A casting article according to another exemplary aspect of the present disclosure includes, among other things, a circuit forming portion including an interior channel and an outer shell body that surrounds the interior channel. An engineered failure feature is formed in the outer shell body and is configured to increase compressibility of the casting article during a casting process. | 06-30-2016 |
164521000 | Self-hardenable molding material | 1 |
20130174999 | INVESTMENT CASTING - The invention provides novel binder, slurry and dry mix compositions for use in the production of investment casting moulds. These compositions comprise water insoluble fibers and significant amounts of uncalcined clay. The compositions display favourable separation characteristics and short drying times. The moulds formed using the compositions have a favourable green strength and conform closely to the wax pattern on which the mould is coated. Also provided are methods of producing the compositions, methods of investment casting mould production utilising the compositions and investment casting coating shells produced using the compositions of the invention. | 07-11-2013 |
164523000 | To perfect casting surface | 1 |
20080314549 | MOLDING MATERIAL MIXTURE, MOLDED PART FOR FOUNDRY PURPOSES AND PROCESS OF PRODUCING A MOLDED PART - Molding material mixture, molded part for foundry purposes and process of producing a molded part. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner. | 12-25-2008 |
164524000 | To prevent casting oxidation | 1 |
20160158829 | CORE COMPOSITION FOR CASTING, AND METHOD FOR PREPARING CORE FOR CASTING USING THE SAME - Disclosed are a core composition for casting and a method for preparing a core for casting using the composition. The core composition for casting includes: molding sand; a binder that includes a water glass-based binder and an oxide film inhibitor; and an additive, thereby improving a sand removing property without releasing harmful gases. | 06-09-2016 |
164525000 | Particular binder material | 29 |
20100126690 | USE OF AMINE BLENDS FOR FOUNDRY SHAPED CORES AND CASTING METALS - The present invention relates to an improved process for preparing foundry shapes by the cold box process, a process for making cores and moulds and a process for casting metals, carrying out as curing catalyst system a blend comprising at least two tertiary amines. | 05-27-2010 |
20160059301 | MOULD MATERIAL MIXTURE HAVING IMPROVED FLOWABILITY - The invention relates to a mould material mixture for producing casting moulds for metal processing, a process for producing casting moulds, casting moulds which can be obtained by the process and their use. The production of the casting moulds is carried out using a refractory base moulding material and a binder based on water glass. A proportion of a particulate metal oxide selected from the group consisting of silicon dioxide, aluminium oxide, titanium oxide and zinc oxide is added to the binder, with particular preference being given to using synthetic amorphous silicon dioxide. The mould material mixture contains a surface-active material as further significant constituent. The addition of the surface-active material enables the flowability of the mould material mixture to be improved, which makes it possible to produce casting moulds having a very complicated geometry. | 03-03-2016 |
164526000 | Resin containing | 20 |
20090183852 | Composite Foundar Core and Casting Method Using Said Core - A foundry shell core includes an outer shell made of a polymerised sand and resin mixture suitable for withstanding the heat and metallostatic pressure produced by molten metal during casting, and of an inner core body made of a material suitable for being thermally dissolved before using the shell core forming an inner cavity inside the core itself that facilitates the intake of smoke and gases produced during the casting. Alternatively, the inner core body is dissolved after the solidification of the casting. The shell cores are obtained by injection with the use of a conventional core box into which the core bodies, previously obtained by a die, have been inserted. | 07-23-2009 |
20090211725 | Molding Process and the Resulting Mold - A molding process which comprises mixing together a particulate aggregate, plural kinds of water-soluble binders, a crosslinking agent causing crosslinking reaction with the binders, a phenol resin, and water, agitating the obtained mixture to prepare a bubbled fluid aggregate mixture, filling the aggregate mixture into a molding cavity, and solidifying the aggregate mixture through the evaporation of water from the mixture to give a mold made from the mixture. | 08-27-2009 |
20090236070 | Apparatus and Method for Producing Casting Mold - To provide a casting mold manufacturing apparatus using steam heating. The apparatus includes a forming die having a cavity, a resin-coated sand supply section for supplying a resin-coated sand into the cavity, a steam supply section for supplying steam into the cavity, and a steam discharge section for discharging the steam from the cavity. At least a portion of the forming die is composed of a porous material having pores with an average diameter smaller than an average particle diameter of the resin-coated sand. At least a portion of the steam is supplied into the cavity through the porous material. Since it is possible to uniformly supply the steam into the cavity, a homogeneous casting mold can be manufactured. | 09-24-2009 |
20090314461 | Anti-Veining Agent for Metal Casting - Additives to foundry sand cores are provided for reducing or eliminating surface defects in metal castings. The additives generally comprise an iron oxide component and a glass component which is preferably free of lithium oxide. | 12-24-2009 |
20100025005 | Method for Casting High-Power Wind Turbine Base with Ductile Iron - A method of casting the base of high-power wind turbines with low-temperature nodular graphite iron, use furan resin sand as the mold sand, and there is no riser or chill in the mold. The mold undergoes microseismic compaction, has no chill and riser, and when parting the parting face is perpendicular to the ground. The molten iron solidifies evenly, which greatly reduces the shrinkage holes and disperse shrinkage, and the dregs and air are easy to be discharged. The pouring system designed for the base, together with reasonable pouring rate and time, makes the system useful in blocking the dregs. All areas of the base need to meet the standards of EN DIN12680 Level 2 or Level 3 of the UT tests. | 02-04-2010 |
20100252226 | ALKALINE PHENOLIC RESOLE RESIN COMPOSITIONS AND THEIR USE - An alkaline phenolic resole resin compositions comprising (a) an aqueous basic solution of a phenolic resole resin, (b) and a polyhydric alcohol, and their use in foundry applications. | 10-07-2010 |
20100319874 | BIO-BASED BINDER SYSTEM - A bio-based binder system for use in preparing foundry molds. In a preferred embodiment, the system includes the use of a) a polyermizable hydroxyl-containing component comprising a saccharide, b) an isocyanate component, and c) a catalyst, and preferably amine catalyst, component adapted to catalyze the polymerization of a) and b), in the presence of a foundry aggregate such as sand. The system can be used in any suitable manner, including in either a cold box process or no bake process as described herein. | 12-23-2010 |
20110108232 | BINDER MATERIAL - A binder material for binding a plurality of particles together to form a conglomerate such as a carbon-containing briquette, a sand casting core and the like is provided. The binder material can include a collagen and/or lignin and a plurality of inorganic particles. In some instances, the binder material can be used to make a composite material. The composite material can include a plurality of particles and the binder material that contains the collagen and/or lignin. The binder material affords for the plurality of particles to be bound together into a desired shape, the desired shape having desirable properties. | 05-12-2011 |
20110277952 | Lignite-Based Foundry Resins - Described herein, in the preferred embodiment, is a leonardite-based polyurethane resin binder that may be used, among other applications, as a binder in combination with foundry aggregate, e.g., sand, for molding or casting metal parts. The binders described herein comprise a humic substance, preferably leonardite, combined with a polymerizable polyol, an isocyanate, and a polymerization catalyst to make a polyurethane resin binder in situ in a foundry aggregate, such as sand. The lignite is mixed with the polymerizable polyol and dispersing agents as additives to improve the suspension quality and binder performance of the lignite-containing part of the binder components. | 11-17-2011 |
20120261087 | PROCESS FOR PRODUCING A MOLD - A process for producing a mold, comprising a step of mixing refractory particles, a water-soluble phenol resin, and a curing agent composition comprising an ester compound, thereby yielding mixed sands, and a step of putting the mixed sands into an original pattern to shape the sands, wherein the refractory particles comprise reclaimed sands that are artificial sands produced by a fusion method in a proportion of 70% or more by weight, the curing agent composition comprises at least one selected from triethylene glycol diacetate, triethylene glycol, 3-phenylpropane-1-ol, and benzyl alcohol. | 10-18-2012 |
20130248138 | POLYURETHANER-BASED BINDER FOR PRODUCING CORES AND CASTING MOLDS USING ISOCYANATES CONTAINING A URETONIMINE AND/OR CARBODIIMIDE GROUP, A MOLD MATERIAL MIXTURE CONTAINING SAID BINDER, AND A METHOD USING SAID BINDER - The present invention relates to a polyurethane-based binder using isocyanates containing uretonimine and/or carbodiimide groups for producing cores and casting molds, to a mold material mixture containing the binder, and to a method using the binder for producing casting molds. | 09-26-2013 |
20130299120 | BINDER CONTAINING SUBSTITUTED BENZENES AND NAPHTHALENES FOR PRODUCING CORES AND MOLDS FOR METAL CASTING, MOLD MATERIAL MIXTURE, AND METHOD - A binder for mold material mixtures is a four-component material. It contains at least one phenolic resin component, at least one isocyanate component, at least one alkyl/alkenyl benzene and at least one dialkylated and/or dialkenylated naphthalene. The phenolic resin component acts as the polyol component and contains phenolic resin obtainable from the reaction between a phenol compound and an aldehyde compound. The isocyanate component contains at least one polyisocyanate with at least two NCO groups per molecule. The alkyl/alkenyl benzene has a boiling point above 250° C. The dialkylated and/or dialkenylated naphthalene has a boiling point above 270° C. | 11-14-2013 |
20150114588 | CURING AGENT COMPOSITION FOR MAKING FOUNDRY MOLDS, USE OF THE SAME, METHOD OF PRODUCING THE SAME, AND METHOD OF MAKING FOUNDRY MOLD - A curing agent composition for making foundry molds, comprising 2,6-dihydroxybenzoic acid. In a sand composition for making foundry molds, it is preferable to use simultaneously: an acid-hardening resin which contains both a binder composition for making foundry molds which comprises one or more 5-position-substituted furfural compounds selected from the group consisting of 5-hydroxymethylfurfural and 5-acetoxymethylfurfural, and the curing agent composition for making foundry molds which comprises 2,6-dihydroxybenzoic acid. It is preferable that the content of 2,6-dihydroxybenzoic acid in the curing agent composition is 10 to 80 wt %. | 04-30-2015 |
20150114589 | "NO-BAKE" FOUNDRY MIX WITH EXTENDED WORK TIME - A “no-bake” process allows the forming of larger metal castings, by providing longer work times, in the range of about 45 to about 60 minutes. This is achieved using a liquid curing catalyst that is a pyridine, substituted at the second or third position with a moiety having a molecular weight in the range of about 30 to about 100 mwu. Examples of the liquid curing catalyst include 2-ethanolpyridine, 3-chloropyridine and 2-methoxypyridine. When combined with a two-part polyurethane binder precursor and a foundry aggregate, the liquid curing catalyst provides not only the longer work time, but also a strip time that is less than about 167% of the work time, as measured from the point of activating the polyurethane precursors by mixing them in the presence of the curing catalyst. | 04-30-2015 |
20160193651 | Three-Dimensional Printed Metal-casting Molds and Methods for Making the Same | 07-07-2016 |
164527000 | And inorganic material | 5 |
20100122791 | BINDER DEGRADATION OF SAND CORES - A sand core is prepared for use in defining a surface of a cast metal article. The core is formed of sand particles bonded with a polyurethane resin, preferably a polyol moiety-containing polyurethane resin. An alkali metal hydroxide, and optionally a glycol, is mixed with precursors of the polyurethane before they are mixed with sand particles for molding and curing the core. The hydroxide and glycol may be encapsulated to prevent interference with core molding. The hydroxide and glycol is distributed in the polyurethane binder resin and used to reduce the decomposition temperature of the core binder during casting. This practice is particularly useful in removing core sand from castings of light metal, lower casting temperature metal alloys. | 05-20-2010 |
20100307714 | STRUCTURE FOR PRODUCING CAST ARTICLES - The present invention provides a structure for producing cast articles containing one or more inorganic particles selected from amorphous and artificial graphites, an inorganic fiber and a thermosetting resin and having a gas permeability of 1 to 500. | 12-09-2010 |
20110079366 | LIGNITE-URETHANE BASED RESINS FOR ENHANCED FOUNDRY SAND PERFORMANCE - Described herein, in a preferred embodiment, is a leonardite-based polyurethane resin binder that may be used, among other applications, as a binder in combination with foundry aggregate, e.g., sand, for molding or casting metal parts. The binders described herein comprise a humic substance, preferably leonardite, first mixed with a foundry aggregate and then the humic-aggregate mixture is combined with a polymerizable polyol, an isocyanate, and a polymerization catalyst to make a polyurethane resin binder in situ in a foundry aggregate, such as sand. The lignite is added as a solid to the foundry aggregate, and improves the binder performance of the lignite-containing part of the binder components. | 04-07-2011 |
20130008625 | BINDER COMPOSITION FOR USE IN MOLD MANUFACTURING - The present invention provides a binder composition for use in mold manufacturing that is capable of preventing a deterioration in the mold strength in a high-humidity environment, and further restraining the generation of an irritant gas at the time of casting; and a mold manufacturing composition wherein this binder composition is used. In order to provide such the binder composition, the binder composition for use in mold manufacturing, comprises a furan resin, and a metal compound containing one or more metal elements selected from the group consisting of elements in the Groups 2, 4, 7, 10, 11 and 13 of the periodic table, wherein the content by percentage of the metal element(s) in the binder composition is from 0.01 to 0.70% by weight, and the metal compound is one or more metal compounds selected from hydroxides, nitrates, oxides, organic acid salts, alkoxides, and ketone complexes. | 01-10-2013 |
20150083358 | BINDER COMPOSITION FOR MAKING FOUNDRY MOLDS - A binder composition for making foundry molds, comprising an acid-hardening resin, one or more 5-position-substituted-furfural compounds selected from the group consisting of 5-hydroxymethylfurfural and 5-acetoxymethylfurfural, and one or more compounds selected from the group consisting of urea and derivatives of urea, wherein the content of the 5-position-substituted-furfural compound(s) by percentage is from 1 to 60% by weight of the binder composition. The content of the compound(s) by percentage selected from the group consisting of urea and derivatives of urea is preferably from 0.3 to 10% by weight of the binder composition. | 03-26-2015 |
164528000 | Inorganic material | 7 |
20090090485 | MATERIAL USED TO COMBAT THERMAL EXPANSION RELATED DEFECTS IN THE METAL CASTING PROCESS - Thermal expansion defects, i.e. veining, are reduced in iron, steel, and nonferrous castings by adding a lithia-containing material in a sufficient amount to the silica sand mold. Adjusting current formulations to maximize the use of lesser expensive raw materials and minimize the use of more expensive raw materials to lower the overall percentages of lithia/metallic oxide containing additives while still reducing or eliminating thermal expansion related defects in the metal casting process reduces the overall cost to manufacture the product. | 04-09-2009 |
20100294454 | MOULDING MATERIAL MIXTURE CONTAINING PHOSPHORUS FOR PRODUCING CASTING MOULDS FOR MACHINING METAL - The invention relates to a molding mixture for producing casting molds for metalworking, a process for producing casting molds, casting molds obtained by the process and also their use. To produce the casting molds, a refractory mold raw material and a binder based on water glass are used. A proportion of a particulate metal oxide selected from the group consisting of silicon dioxide, aluminum oxide, titanium oxide and zinc oxide is added to the binder, particular preference being given to using synthetic amorphous silicon dioxide. The molding mixture contains a phosphate as essential constituent. The use of phosphate can improve the mechanical strength of casting molds at high thermal load. | 11-25-2010 |
20100326620 | MOULD MATERIAL MIXTURE HAVING IMPROVED FLOWABILITY - The invention relates to a mould material mixture for producing casting moulds for metal processing, a process for producing casting moulds, casting moulds which can be obtained by the process and their use. The production of the casting moulds is carried out using a refractory base moulding material and a binder based on water glass. A proportion of a particulate metal oxide selected from the group consisting of silicon dioxide, aluminium oxide, titanium oxide and zinc oxide is added to the binder, with particular preference being given to using synthetic amorphous silicon dioxide. The mould material mixture contains a surface-active material as further significant constituent. The addition of the surface-active material enables the flowability of the mould material mixture to be improved, which makes it possible to produce casting moulds having a very complicated geometry. | 12-30-2010 |
20120199309 | SAND ADDITIVES FOR MOLDS/CORES FOR METAL CASTING - A foundry mix composition including silica sand, unexpanded perlite ore, and a binder material. The unexpanded perlite ore is present in the foundry mix composition from about 0.5 wt % to about 5.0 wt %. Exemplary embodiments of the present invention also contemplate methods of making a sand mold/core from such a foundry mix composition. | 08-09-2012 |
20150060005 | SALT-BASED CORES, METHOD FOR THE PRODUCTION THEREOF AND USE THEREOF - Cores that are inserted into the mold during the die casting of workpieces from metal in order to keep the cavities provided in the workpieces free during the filling of the molds with the melt have to meet demanding requirements with regard to the dimensional stability and suitability thereof for removal from the cavities. Therefore, salt-based cores which can be produced by molding and compressing a core material mixture are provided according to the invention, the core materials thereof being selected from at least one salt, at least one binder system comprising a combination of binder/binding agent and optionally auxiliary substances such as additives, fillers, wetting agents and catalysts, wherein the salt, the binder system and the optionally used auxiliary substances of the core material mixture are inorganic, and these core materials are soluble with water as the solvent. | 03-05-2015 |
20150306658 | MOLDING MATERIAL MIXTURES CONTAINING METAL OXIDES OF ALUMINUM AND ZIRCONIUM IN PARTICULATE FORM - The invention relates to mold material mixtures containing at least one aluminum oxide in the alpha phase and/or at least one aluminum/silicon mixed oxide, except for aluminum/silicon mixed oxides having a layered silicate structure, as a particulate metal oxide, in combination with refractory mold base materials and a water glass-based binder system. The mold material mixtures are used for the production of molds and cores for the foundry industry. | 10-29-2015 |
20150367406 | METHOD FOR THE PRODUCTION OF CORE SAND AND/OR MOLDING SAND FOR CASTING PURPOSES - The invention relates to a method for producing core sand and/or molding sand for casting purposes. A granular mineral mold base material is mixed with at least one inorganic binder and additionally an inorganic expanding additive. According to the invention, water glass is used as the binder and expanded graphite is used as the expanding additive. | 12-24-2015 |
164529000 | Particular refractory material | 15 |
20090114364 | MATERIAL USED TO COMBAT THERMAL EXPANSION RELATED DEFECTS IN HIGH TEMPERATURE CASTING PROCESSES - An additive to foundry sand molding and core aggregates is used to produce sand cores and molds. The additive produces a sand-based foundry molding and core aggregate which resists the formation of some of the defects commonly associated with the production of castings produced by silica sand-based molding and core aggregates. In particular, the additive improves the quality of castings poured at temperatures higher than those of the pouring temperatures of molten iron, such as in steel castings, and in iron castings with “hot spots.” | 05-07-2009 |
20090114365 | MATERIAL USED TO COMBAT THERMAL EXPANSION RELATED DEFECTS IN HIGH TEMPERATURE CASTING PROCESSES - An additive to foundry sand molding and core aggregates is used to produce sand cores and molds. The additive produces a sand-based foundry molding and core aggregate which resists the formation of some of the defects commonly associated with the production of castings produced by silica sand-based molding and core aggregates. In particular, the additive improves the quality of castings poured at temperatures higher than those of the pouring temperatures of molten iron, such as in steel castings and in iron castings with “hot spots.” | 05-07-2009 |
20090205801 | METHOD OF MANUFACTURING EXPENDABLE SALT CORE FOR CASTING AND EXPENDABLE SALT CORE FOR CASTING - A die casting method for forming an expandable salt core includes, first, a salt mixture containing at least a potassium salt and a sodium salt is melted by heating to obtain a melt. Subsequently, the temperature of the melt is decreased to set the melt in a semi-solidified (solid-liquid coexisting) state. The melt in the semi-solidified state is injected into a metal mold under a high pressure and solidified. After solidification, the obtained expendable salt core is taken out of the metal mold. | 08-20-2009 |
20130139994 | METHOD FOR PRODUCING A METAL PART - The invention relates to methods of casting metal parts in sand molds, with the particularity that it is not necessary to use sleeves surrounding the feed risers which are arranged outside the part to offset the shrinkage occurring during the solidification of the molten metals. The operations of placing the sleeves which must be arranged around the risers are eliminated with the method object of the invention, the actual sleeves being made when the sand mold is produced. | 06-06-2013 |
20130199749 | METHOD FOR MANUFACTURING MONOLITHIC HOLLOW BODIES BY MEANS OF A CASTING OR INJECTION MOULDING PROCESS - A method for manufacturing a monolithic hollow body by means of a casting or injection moulding process, the manufacturing method contemplating the steps of: producing at least one lost ceramic core that reproduces the shape of at least one internal cavity of the hollow body, introducing the ceramic core inside a first mould that reproduces in negative the external shape of the hollow body, feeding a molten material inside the first mould by means of a casting or injection moulding process, letting the material inside the first mould solidify, extracting the hollow body from the first mould, and destroying and removing the ceramic core located inside the hollow body. | 08-08-2013 |
20140124157 | COMPOSITIONS PREPARED FROM AN ALDEHYDE AND A FURFURYL ALCOHOL AND THEIR USE - A furfuryl alcohol derivative having the general formula X[—CH(OR) | 05-08-2014 |
20140182809 | MULLITE-CONTAINING INVESTMENT CASTING CORE - An investment casting core includes a mullite-containing core body. The body can be made by providing a mullite-containing powder, forming the powder into a green body, and sintering the green body to form the mullite-containing core body. | 07-03-2014 |
20140209268 | CALCIUM HEXALUMINATE-CONTAINING MOLD AND FACECOAT COMPOSITIONS AND METHODS FOR CASTING TITANIUM AND TITANIUM ALUMINIDE ALLOYS - The disclosure relates generally to mold compositions and methods of molding and the articles so molded. More specifically, the disclosure relates to mold compositions, intrinsic facecoat compositions, and methods for casting titanium-containing articles, and the titanium-containing articles so molded, where the mold comprises calcium hexaluminate. | 07-31-2014 |
20150041098 | 3-D Printed Casting Shell And Method Of Manufacture - A printable refractory material is provided having a liquid and powder component configured for use in a 3-D powder printer, where the material forms hydraulic bonds when the liquid and powder components are combined. Methods of printing the refractory material and forming castings therefrom are also provided. | 02-12-2015 |
20150321247 | CERAMIC CORE AND METHOD FOR PRODUCING SAME - A ceramic core is obtained by firing a mixture that contains 0.1-15.0% by mass of alumina and 0.005-0.1% by mass of potassium and/or sodium with the balance made up of silica and unavoidable impurities. Not less than 90% by mass of amorphous silica is contained in 100% by mass of the silica. A method for producing a ceramic core, wherein: a blended material is obtained by blending 25-45% by volume of a binder into 55-75% by volume of a mixture that is obtained by mixing alumina, potassium and/or sodium, and silica so as to have the above-mentioned composition; the blended material is injected into a die so as to obtain a molded body; and the molded body is degreased at 500-600° C. for 1-10 hours, and then fired at 1,200-1,400° C. for 1-10 hours. | 11-12-2015 |
20150328678 | METHODS AND COMPOSITIONS FOR FORMATION OF CERAMIC ARTICLES - Compositions and methods useful for forming ceramic articles, such as, for instance, cores and shells for investment casting, are provided. The composition comprises a liquid that comprises a siloxane species; a plurality of particles, comprising a ceramic material, disposed within the liquid; a catalyst material disposed within the liquid; and a pore-forming agent disposed within the liquid. The pore-forming agent comprises a silicon-bearing agent that is substantially inert with respect to the liquid, and has an average molecular weight less than about 1300 grams per mole. The method comprises disposing any of the compositions described above in a desired shape; curing the siloxane species, and volatilizing the pore-forming agent to form a porous green body. | 11-19-2015 |
20160001353 | INVESTMENT MOLD WITH FUGITIVE BEADS AND METHOD RELATED THERETO - An investment mold includes a mold cavity and a refractory investment wall that bounds at least a portion of the mold cavity. At least a portion of the refractory investment wall includes a plurality of fugitive beads. The fugitive beads can be sacrificed to provide voids that control the strength of the refractory investment wall such that the wall fractures at the voids during investment casting to alleviate stress on a solidified metal cast in the mold cavity | 01-07-2016 |
20160151829 | ADDITIVELY MANUFACTURED CORE | 06-02-2016 |
20160158836 | Casting device and associated method for investment casting with improved mechanicalproperties - The invention describes a method of casting a metal comprising the following steps: fabricating a pattern from wax or plastic having the geometry to generate a desired object, fabricating an investment mold from the wax, placing the mold in an open pressure vessel, filling the investment mold with a molten metal alloy, immediately thereafter closing and pressure sealing the pressure vessel, pressurizing the sealed pressure vessel with an inert gas for a predetermined measured time, depressurizing the sealed pressure vessel, opening the pressure vessel and removing the metal filled investment mold, and extracting the desired object from the investment mold. | 06-09-2016 |
20160158837 | Sand casting device and associated method with improved mechanical properties - The present invention describes a method of casting a metal alloy comprising forming a sand based mold having the geometry to generate a desired object to be cast, placing the mold in an open pressure vessel, filling the mold with a molten metal alloy, immediately thereafter closing and pressure sealing the pressure vessel, pressurizing the sealed pressure vessel with an inert gas for a measured time said predetermined measured time sufficient for the molten metal to cool and fully solidify, depressurizing the sealed pressure vessel and removing the metal filled sand mold, and extracting the desired object from the mold. | 06-09-2016 |