Abstract: The additive composition of the present invention is one blended in a sand composition which is subjected to foaming to mold a sand mold, and includes (A) an alkylsulfonate metal salt having an alkyl group with 9 to 22 carbon atoms. The additive composition may further include at least one component selected from a group consisting of (B) an alkylsulfate metal salt, (C) a polyoxyalkylene alkyl ether sulfate metal salt, and (D) an alkylbenzene sulfonate metal salt.

Abstract: Compositions useful for foundry processes such as green sand casting are discussed. The compositions may comprise an aggregate, at least one inorganic binding agent, and at least one high aspect ratio silicate. For example, the composition may comprise sand, one or more clay materials serving as a binding agent, and a high aspect ratio silicate chosen from mica, talc, or a combination thereof. The composition may be formed into a green sand mold for use in casting molded articles. Incorporation of the high aspect ratio silicate may help to improve the quality of the casted article.

Abstract: An amount of a halloysite clay, used as an additive in a foundry mix composition having a polyurethane-based binder system, reduces the amount of smoke emitted when molds and cores formed from the composition are exposed to molten metal, as compared to when the halloysite clay is not used.

Abstract: Inorganic coated sand in a dry state having refractory aggregate; and an inorganic binder layer formed on a surface of the refractory aggregate, in which the inorganic binder layer contains a metasilicate hydrate.

Abstract: The disclosure provides a coating composition for improving the sag resistance of a fibrous panel, the composition including 10 to 100 wt. % inorganic binder, based on the total weight of the dry coating, wherein the inorganic binder includes a borate salt and at least one of an alkali metal silicate or an alkaline earth metal silicate, and the inorganic binder is water soluble. Further provided are fibrous panels having a backing side and an opposing facing side including the coating of the disclosure, and methods of preparing same.

Abstract: A die cast component includes an insert element with a plurality of form-fitting elements which are designed for the form-fitting connection of the insert element with a casting material. A ratio of a component wall thickness to a wall thickness of the insert element is a maximum of 4.

Abstract: An expandable aggregate mixture for a mold, which contains an aggregate, a water-soluble binder, a water-soluble foaming agent, water, and spherical metal oxide particles.

Abstract: To provide a phosphate-based dental investment material which can used for metal and press ceramic and especially can impart the lubricity to the surface of a press ceramic, and a phosphate-based dental investment material which can be subjected to a flash heating for press ceramic, can obtain sufficient the hardening expansion, and can easily remove the investment material after press molding. A phosphate-based dental investment material of the present disclosure comprising a powder material and a liquid material, wherein the powder material contains (a) magnesium oxide: 5 to 20 wt. %; (b) ammonium dihydrogenphosphate: 8 to 25 wt. % and the liquid material contains (c) aqueous solution including a cation-treated colloidal silica.

Abstract: The present invention relates to nanoparticle based sand conditioner composition and a method of synthesizing the same. The composition has the raw material compound RM 1, RM 2, RM 3 and RM 4. The RM1 has carbonaceous material, hydrocarbons, ultrafine metal/metal oxide and ceramic oxide nanoparticles and metallic wires. The RM 2 has natural carbon source. The RM 3 comprises synthetic/non-renewable carbon source. The RM 4 has hydrocarbons. The method of synthesizing nanoparticle based sand conditioner comprises mixing RM 2 and RM 4 in a mixer for 10 minutes for coating RM 2 with RM 4 to obtain an intermediate product. The RM 1 and RM 3 are added to an intermediate product in a mixer and mixed for 10 minutes to get a uniform/homogeneous mixture which is cooled to obtain a sand conditioner composition impregnated with nanoparticles into carbon.

Abstract: 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.

Abstract: An exemplary method of forming an endwall with a contour includes casting an endwall with at least one cooling channel having an opening from the endwall, and covering the opening with a cupped contour formed on the endwall. An exemplary gas turbine engine blade assembly includes an endwall with a plurality of cooling channels, an airfoil extending radially from the endwall to a tip, and a cupped contour formed on the endwall to provide a cooling chamber between the cupped contour and a radially facing surface of the endwall.

Abstract: The present disclosure generally relates to casting molds including a casting shell surrounding at least a portion of a casting core comprising a first metal component and a hot isostactic pressed second metal component around the first metal component. In one aspect, the first metal component may have a lower melting point than the second metal component. In another aspect, the second metal component may retain some metal powder grain structure.

Abstract: A method of forming a component includes coupling a jacket around at least a portion of a precursor component to form a jacketed precursor component. The jacket is shaped to correspond to a net shape of an outer surface of the component. A mold is formed around the jacketed precursor component. A component material in a fluid state is introduced into a jacketed cavity defined in the mold to form the component. The jacketed cavity is defined in a space at least partially created by removal of the precursor component from the jacketed precursor component.

Abstract: A method of producing silica-based particles includes, when a dispersion liquid of composite oxide particles is prepared by simultaneously adding an aqueous silicate solution and/or an acidic silicic acid solution and an aqueous solution of an alkali-soluble inorganic compound in an alkali aqueous solution or in an alkali aqueous solution with seed particles dispersed therein, if required, the aqueous silicate solution and/or the acidic silicic acid solution and the aqueous solution of alkali-soluble inorganic compound are added so that the molar ratio of MOx/SiO2 are in a range from 0.01 to 2, herein MOx denoting an inorganic oxide other than silica and SiO2 denoting silica to prepare the dispersion liquid of composite oxide particles with an average diameter (Dp1) in a range from 3 to 300 nm.

Abstract: The invention relates to a mold material mixture for producing casting molds for metal processing, a process for producing casting molds, casting molds which can be obtained by the process and their use. The production of the casting molds is carried out using a refractory base molding 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 mold material mixture contains a surface-active material as further significant constituent. The addition of the surface-active material enables the flowability of the mold material mixture to be improved, which makes it possible to produce casting molds having a very complicated geometry.

Abstract: The following invention is used to recycle broken pieces of crayons, A crayon package comprises a portion of the box which can be placed in an oven, said portion of the box being detachable from the package, said portion of the box is designed as a crayon recycling cartridge, the crayon recycling cartridge comprises slots, the edges of the slots are provided with guide slopes, the bottom of the guide slope is connected to the edge of the slot and the slot is expanded outward, which increases the volume of the slot. The used crayons will be placed into the slots, melted and re-casted into new crayons. And if too much used crayons are placed above the edge of the slots, when the crayon melts, the guide slope will catch the melted crayons, sending it back down into the slots, fitting to the volume of the slots.

Abstract: The invention relates to mold material mixtures on the basis of inorganic binders, for producing molds and cores for metal casting. Said mixtures consist of at least one refractory mold base material, an inorganic binder and amorphous silicon dioxide as an additive. The invention also relates to a method for producing molds and cores using said mold material mixtures.

Abstract: A power electronics assembly includes a case and an array of power stages disposed within the case. Each of the power stages includes a transistor-based switching arrangement configured to change direct current from a traction battery to alternating current for an electric machine. The power stages are bonded together via a resin to form a monolithic power module adhered to a wall of the case. This disclosure also discloses methods for forming power electronic assemblies.

Abstract: The invention relates to process for coating a solid, water-insoluble particulate matter, with a metal oxide comprising: (a) contacting the solid water-insoluble particulate matter with a cationic additive in an aqueous medium to obtain a dispersion of said particulate matter having a positive zeta potential; (b) coating the solid water-insoluble particulate matter by precipitation of a metal oxide salt onto the surface of the particulate matter, forming a metal oxide layer thereon; and (c) aging said coating layer. The invention further relates to coated particulate matter obtained by the process and to compositions comprising solid, water-insoluble particulate matter, coated by a metal oxide layer, the particulate matter being a dermatological active agent or a pesticide. The invention additionally relates to methods of treating a surface condition in a subject using compositions comprising solid, water insoluble dermatologically active agent, coated by a metal oxide layer.

Abstract: A turbine bucket includes a leading edge, a trailing edge, a root portion, and a tip portion. The turbine bucket also includes one or more cooling passages extending through a body of the turbine bucket from an inlet to an outlet. The cooling passages are configured to route a cooling flow of fluid through the turbine bucket. The turbine bucket further includes a plenum defined within the tip portion to receive the fluid from the outlet of the cooling passages for expulsion of the cooling flow of fluid into a main flow path via at least one outlet hole proximate the trailing edge of the turbine bucket.

Abstract: A method of fabricating an investment casting mold includes using a zircon-containing slurry to form a facecoat of a refractory investment wall of a mold cavity in an investment casting mold. The zircon-containing slurry includes, by weight, at least 70% of zircon powder. Also disclosed is a slurry for use in an investment casting mold. The slurry includes, by weight, at least 70% of zircon powder, 10%-30% of colloidal silica material, and 1%-10% of a carrier solvent. The method and slurry can be used to fabricate an investment casting mold that has a refractory investment wall with a facecoat having, by weight, at least 70% zircon.

Abstract: According to the invention, by setting the linear thermal expansion amount when a mold made of a molding sand is heated from a room temperature to 1000° C. to be not more than 0.9%, and the ratio (D/d) between the diameter of a slump (D) and the diameter of a slump cone (d) in a slump test of the molding sand having a hardening agent kneaded to be not less than 1.65, a molding sand preferable for use in a mold produced using the self-hardening type of three dimensional laminate molding sand mold, having low thermal expansibility preventing occurrence of a veining defect, and capable of forming a large and complicated shape can be obtained.

Abstract: Sand for a casting mold including sand, a binder, and an inorganic compound particle having poor water solubility and generating a gas, which is at least one of water vapor or carbon dioxide gas, by heat from a molten metal.

Abstract: In one embodiment, a gas turbine engine component includes a foam based core and a composite skin member. Both the foam based core and the composite skin member can be used to structurally support the gas turbine engine component. The composite skin member can be a CMC material and is used to partially encapsulate the foam core. The gas turbine engine component can take the form of an airfoil member such as a blade or a vane, a combustor liner, etc. A first portion of the composite skin member includes a first surface extending past an edge of the component creating a step approximate an edge section. In another embodiment, composite skin members can be used to form a continuous shape for the edge section such that the foam core forms part of a gas path surface.

Abstract: The object of the present invention is to provide an embedding material composition for casting that makes it possible to conduct a favorable casting in the case where casting is conducted using a resin pattern that is different from a conventional wax pattern in disappearance temperature and disappearance behaviors through “rapid heating” excellent in treatment efficiency. The present invention relates to an embedding material composition for casting not using a heat-expandable refractory material as a main component, comprising: a binder; and a non-heat-expandable refractory material having an average particle diameter of 5 to 20 ?m as main components, in which a content of the binder is 25 to 40 parts by mass and a content of the non-heat-expandable refractory material is 60 to 75 parts by mass in the case where the total amount of the main components is 100 parts by mass, and the present invention also relates to a casting process using the embedding material composition for casting.

Abstract: In an Ag, Cu, Ge alloy containing boron as grain refiner, investment castings of a clean bright silvery appearance and/or free from cracking defects are obtained by incorporation of silicon, in some embodiments in the absence of added zinc.

Abstract: The object of the present invention is to provide an embedding material composition for casting that makes it possible to conduct a favorable casting in the case where casting is conducted using a resin pattern that is different from a conventional wax pattern in disappearance temperature and disappearance behaviors through “rapid heating” excellent in treatment efficiency. The present invention relates to an embedding material composition for casting not using a heat-expandable refractory material as a main component, comprising: a binder; and a non-heat-expandable refractory material having an average particle diameter of 5 to 20 ?m as main components, in which a content of the binder is 25 to 40 parts by mass and a content of the non-heat-expandable refractory material is 60 to 75 parts by mass in the case where the total amount of the main components is 100 parts by mass, and the present invention also relates to a casting process using the embedding material composition for casting.

Abstract: Congruent melting salt alloys for use as salt cores in high pressure die casting of metallic alloys for the production of complex metallic parts. Congruent melting salt alloys provide mechanical advantages in the high pressure die casting of both aluminum and magnesium alloys. Salt cores may be used to make complex high pressure die casting parts such as internal passages in a closed deck engine block. The congruently melting salt alloy is cast into a shape of a desired salt core. The cast salt core of the congruently melting slat alloy is placed into a high pressure die casting mold for a complex object. Molten metal is introduced into the high pressure die casting mold to form the complex part. The congruently melting salt alloys may be readily removed from the final cast part through flushing with a solvent, such as water, or through other processes known in the art.

Abstract: A turbine bucket for a gas turbine engine may include a platform, an airfoil extending radially outward from the platform, and a number of cooling passages defined at least partially within the airfoil. At least one of the cooling passages may extend radially to an outlet defined in an outer surface of the airfoil radially inward from a tip end of the turbine bucket.

Abstract: The disclosure relates generally to mold compositions and methods of molding and the articles so molded. More specifically, the disclosure relates to silicon carbide-containing mold compositions, silicon carbide-containing intrinsic facecoat compositions, and methods for casting titanium-containing articles, and the titanium-containing articles so molded.

Abstract: The present invention is directed to a water-based paint composition for concrete and masonry surfaces, a method of coating a concrete or masonry surface, and a corresponding method of preparing a coated concrete or masonry surface. The paint composition includes about 10-50% by weight water, about 5-40% by weight colloidal silica particles, about 40-85% by weight of an inorganic pigment, and about 1-10% by weight of a polymer binder. The paint composition provides the coated surfaces with excellent resistance to a wide variety of weather conditions, and alleviates health and safety concerns associated with long-term exposure to conventional organic-based paints.

Abstract: A pattern-forming method includes providing a metal-containing film directly or indirectly on a substrate. A directed self-assembling film is provided directly or indirectly on the metal-containing film such that a plurality of phases of the directed self-assembling film is formed. At least a part of the plurality of phases of the directed self-assembling film is removed such that a pattern of the directed self-assembling film is formed. The metal-containing film and the substrate are sequentially etched using the pattern of the directed self-assembling film as a mask.

Abstract: A thermal spray material includes granules of an oxyfluoride of yttrium (YOF). The granules may contain a fluoride of yttrium (YF3). The granules preferably have an oxygen content of 0.3 to 13.1 mass %. The granules preferably have a fracture strength of 0.3 MPa or more and less than 10 MPa. Part of yttrium (Y) of the granules may be displaced with at least one rare earth element (Ln) except yttrium, the molar fraction of Ln relative to the sum of Y and Ln being preferably 0.2 or less.

Abstract: This invention publishes a method to prepare CaO-based ceramic cores used in investment casting applications. This method claims to use the rare earth oxide to coat the CaO core surface; later the coated cores are shaped then sintered to get the final products. CaO based core was made by 5˜15 wt % plasticizer, 0.001˜20 wt % mineralizer and the rare earth-coated CaO powders to balance for total 100%. This preparation method can solve the CaO core water absorption problems during core manufacturing, shipping and storage process while improve the core chemical inertness and mechanical properties.

Abstract: A two-piece piston is formed by friction welding an upper member to a lower member, wherein the upper and lower members are precision cast to net final dimensions such that no post-casting machining is required prior to the friction-welding process. The upper member includes a substantially flat crown and combustion surface extending radially inward from the crown. The lower member includes a pair of opposing skirts, each having a bore formed therethrough for receiving a connecting rod pin. The upper member and lower member each include at least two corresponding connecting surfaces that form a welded joint therebetween when the upper and lower members are friction welded together. The finished piston includes an integral cooling oil reservoir adjacent to the combustion surface.

Abstract: A method of treating polycrystalline diamond includes providing a leaching agent within a vessel, placing a polycrystalline diamond body within the vessel such that the polycrystalline diamond body contacts the leaching agent, and applying a vacuum pressure in the vessel at an interval, where the interval includes at least one cycle, each cycle having a duration measured from the time the vacuum pressure is applied to the time the vacuum pressure is removed, and a frequency at which the at least one cycle is conducted.

Abstract: Embodiments of the present disclosure relate to the preparation of colloidal dispersions or suspensions of inorganic materials with nano-sized and nano-structured morphologies, preferably the nanosheet form, compositions produced by this method, and the like.

Abstract: A mixing device having a mixing container and has a single-shaft agitator that extends into the mixing container. At the end of the drive shaft, a rotor body is arranged slightly above the bottom of the mixing container. The rotor body comprises a plurality of mixing blades, wherein the blades are, in one example, star-shaped and fixed in position to each other. A first end of the drive shaft is coupled to a motor and a second end of the drive shaft is configured to extend into the mixing vessel, wherein the blades are attached onto the second end of the drive shaft. The blades in one example include at least two coincidental knife-edged blades such that at least one of the knife-edged blades is facing upward. The mixing device in one example is used to mix calcium aluminate-containing slurries.

Abstract: The disclosure relates generally to mold compositions comprising calcium aluminate and calcium titanate. The disclosure also relates to methods of molding and the articles so molded using the mold compositions. More specifically, the disclosure relates to calcium aluminate/calcium titanate mold compositions and methods for casting titanium-containing articles, and the titanium-containing articles so molded.

Abstract: A method for producing a dental restoration (D) by CAD casting is described, said method comprising the steps of a) recording three-dimensional, digital data of the dentition or of a part of the dentition of a patient, b) creating a virtual dental restoration (VD) using the recorded three-dimensional, digital data, wherein the virtual dental restoration (VD) is expanded in relation to the dental restoration (D) to be produced, c) preparing a model (M) using the created virtual dental restoration, such that the model (M) is expanded in relation to the dental restoration (D) to be produced, d) embedding the model (M) in an embedding compound (EM), e) hardening the embedding compound (EM) and removing the model (M), such that a casting mold is obtained, f) filling the casting mold, preferably by pouring, with a casting material (GM) and cooling the casting material (GM), such that the dental restoration (D) is obtained, and optionally the further steps of c) working the dental restoration (D), and h) veneering t

Abstract: A binder for the production of sand cores and/or molds for foundries that includes sand mixed with an alkyl silicate, preferably tetraethyl silicate; an aqueous solution of an alkali metal silicate, preferably sodium silicate, which solution also contains an alkali metal hydroxide, preferably sodium hydroxide, where the ingredients in such mixture are preferably in given percentage ranges and are mixed until the sand shows a homogeneous aspect and constitution. Also method of manufacturing sand molds for foundries that includes mixing foundry sand with the aforementioned binder, blowing the sand mixed with the binder, having still between 0.5% to 2.5% of water, into a cold box by means of air that is at room temperature, and once the cold box mold has been filled with the sand, passing a hot air current through the sand to dry and harden the binder thus obtaining the foundry mold.

Abstract: An yttria-based slurry composition comprising yttria, an aqueous silica binder system or an aqueous ammonium zirconium carbonate binder system and a fluorine compound, which is selected from ammonium fluoride, ammonium hydrogen difluoride, sodium fluoride, potassium fluoride, sodium hydrogen difluoride and/or potassium hydrogen difluoride and a method of stabilizing an yttria-based slurry composition comprising yttria and an aqueous silica binder system or an aqueous ammonium zirconium carbonate binder system which method comprises treating the composition, preferably treating the binder system, with a fluorine compound which is selected as indicated above.

Abstract: The disclosure relates generally to mold compositions and methods of molding and the articles so molded. More specifically, the disclosure relates to mold compositions and methods for casting titanium-containing articles, and the titanium-containing articles so molded.

Abstract: Disclosed is a foundry mix containing a sulfate and/or nitrate salt and its use to make foundry shapes by the warm-box, hot-box, no-bake, and cold-box process, the use of these foundry shapes to make metal castings, and the metal castings prepared by the process.

Abstract: The invention provides a water-borne complete inorganic alkali silicate composition capable of solving the problem of gelation occurred in a preservation solution without using anionic organic substances, expanding the range of application dramatically, additionally solving the problem of efflorescence after coating, which is the biggest problem when the molar ratio is low, and furthermore curing at normal temperature without baking, enabling long-lasting effects. The water-borne complete inorganic alkali silicate composition is comprised of a mixture of an alkali metal silicate including a simple or a mixture of potassium silicate or sodium silicate, a colloidal silica, and a simple or a mixture of a sodium phosphate compound or a potassium phosphate compound.

Abstract: Mixture for use in a three-dimensional printer to make molds suitable for producing ferrous coatings. The mixture includes cement, sand and accelerator. Grain sizes of the cement, sand and accelerator are selected to assure that the three-dimensional printer generates coherent layers.

Abstract: Disclosed is a foundry mix containing a sulfate and/or nitrate salt and its use to make foundry shapes by the warm-box, hot-box, no-bake, and cold-box process, the use of these foundry shapes to make metal castings, and the metal castings prepared by the process.

Abstract: Disclosed is a foundry mix containing a carbonate salt and its use to make foundry shapes by the warm-box, hot-box, no-bake, and cold-box process, the use of these foundry shapes to make metal castings, and the metal castings prepared by the process.

Abstract: The present invention features a core material mixture for casting that prevents strength from being decreased and improves de-coring properties. The core material mixture preferably includes molding sand, and a core binder consisting of sodium silicate-based binder and an oxide film inhibitor. The present invention also provides a method of fabricating a core for a casting and a core for the casting fabricated by the same method.

Abstract: A process for hot shaping a workpiece of metal or an intermetallic compound at a temperature of higher than about 1000° C. The method comprises at least partially coating the surface of the workpiece with a coating agent that comprises an oxide phase and an additive and/or an adhesive before processing the workpiece into a formed body or a rolling product. A coating agent for reducing the heat emission from the workpiece comprises a predominant amount of an oxide phase. This abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.