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8147605 |
Coating composition for a mould
A coating system for a mould for the directional solidification of silicon. The coating is applied as an aqueous slurry of silicon nitride particle, carbon black and microsilica.
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8011419 |
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...
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8007580 |
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 comprising kyanite, spodumene, titanium dioxide, ilmenite and black iron oxide. The additive produces...
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7968018 |
Use of surfactants in extraction procedures for silicone hydrogel ophthalmic lenses
Methods of producing silicone hydrogel ophthalmic lenses include contacting one or more delensed silicone hydrogel ophthalmic lens with a liquid composition that contains alcohol, water, and a...
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7891636 |
Silicone mold and use thereof
A silicone mold comprising and oxidized, patterned surface and a layer of perfluoroether silane release agent is described. The mold enables 2nd generation silicone molds to be replicated, i.e....
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7575042 |
Methods for the formation of refractory metal intermetallic composites, and related articles and compositions
A method for forming an article is described. The method includes the step of applying a precursor material to at least one surface of a mold structure for casting the article, and curing the...
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7562858 |
Wear and texture coatings for components used in manufacturing glass light bulbs
The present disclosure relates to a quench mold that may include an interior cavity and a coating on the interior cavity. The coating may include a plurality of particles such as metal-coated...
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7517402 |
Composition comprising a phosphate binder and its preparation
A binder, a composition, a product and a kit, as well as a process for preparing the binder and composition, are directed to a composition useful as an inorganic phosphate binder, which binder is...
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7442246 |
Phosphate-based dental investing material
In order to produce a dental cast product having the flat surface, by blending a dispersant with a phosphate-based investing material to improve the dispersability of an aggregate powder and a...
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7413598 |
Mold and method for manufacturing the same
The present invention discloses a mold and a method of manufacturing the mold. The mold includes a mold matrix and a number of boron nitride nanotubes sintered together with the mold matrix. Each...
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7348286 |
Ceramic composite material and method of its manufacture
Ceramic composite material that has excellent mechanical properties within a range from room temperature to high temperature and high die release with respect to glass, resins, ceramics, and...
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7173079 |
Casting material for producing casting molds for casting high-melting point materials
The casting-mold material designed to manufacture casting molds used in casting high melting-point substances. The casting mold formed from a powder component containing magnesium oxide and...
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6949136 |
High temperature investment material and method for making solid investment molds
An improved phosphate-type refractory investment material and method for making solid investment molds especially useful for casting high melting point metals and alloys, such as platinum and the...
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6918954 |
Colloidal silicate dispersion, method for its preparation and its use
The present invention is directed to a colloidal aqueous silicate dispersion containing silica and alumina, the molar ratio between silica and alumina being 2-12, as well as to a method for its...
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6860319 |
Acid activated clay for use in foundry sand
A foundry sand binder formed by reacting a smectite clay containing exchangeable calcium ions with an acid to enhance the ability of the clay to bind sand in forming a metal casting sand mold. The...
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6702886 |
Mold coating
A coating for a mold surface of a casting mold includes a metallic bond coat bonded to the mold surface and having a continuous, uniform thickness of between about 0.002 to 0.005 inch on the mold...
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6589900 |
Ceramic product based on lithium aluminum silicate
A ceramic product containing at least 70% lithium aluminium silicate of 100% total mass weight percent; and a non-wetting agent in the form of barium sulphate. Most preferably, the lithium...
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6551396 |
Phosphate investment compositions
An investment composition is described for use in investment casting (also called lost wax casting). The composition is a phosphate bonded material that contains mono-ammonium phosphate (MAP),...
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6436858 |
Organic lens molds in inorganic glass and novel inorganic glasses
The principal object of the present invention is organic lens molds, constituted wholly or in part of at least one specific inorganic glass, advantageously strengthened by a chemical tempering or a...
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6176919 |
Water-based paint useful for windshields
The invention is directed to a water-based paint composition comprising sodium silicate, water, water-soluble base, metal oxide pigment, a fused silica and, optionally, a low-melting glass frit,...
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6139619 |
Binders for cores and molds
An inorganic binder system for foundry compositions includes a silicate and added phosphate. The composition produces a binder having the advantageous strength properties of a silicate binder...
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6126737 |
High solids water-based ceramic paint
The invention is directed to a dark colored high-solids water-based paint composition comprising sodium silicate, water, water-soluble base, metal oxide pigment, a low-melting glass frit, and...
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6017387 |
Process for preparing molding sand for green sand mold
A process for preparing a molding sand for a green sand mold is provided. The process comprises the step of drying under a reduced pressure of 0 to 0.3 atm for 0.5 to 30 seconds a green molding...
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6013125 |
Investment of powders and method for rapid preparation of investment molds
The present invention relates to improved investment powders for use in making improved investment molds for casting metals, and the use of such molds with vacuum and/or either conventional,...
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5977007 |
Erbia-bearing core
A ceramic core that includes, prior to core sintering, erbia filler material alone or admixed with a second ceramic filler material, such as alumina, and a binder to provide a core that is...
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5921312 |
Soluble core for casting
An improved soluble core for die casting metals or metal matrix composites is formed of a mixture of salt and about more than 0 weight % and less than 20 weight % of ceramic material blended...
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5911269 |
Method of making silica sand molds and cores for metal founding
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 to provide about...
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5893946 |
Combustible carbonaceous compositions and methods
A combustible carbonaceous composition and method of making a charcoal briquette wherein a finely divided carbonaceous material is combined with an activated carbon and/or an activated graphite...
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5865236 |
Crushed and graded magnetite ore for manufacturing moulds and cores
Crushed and graded magnetite ore is mixed with clay to form foundry moulds and cores. These moulds or cores are useful when casting non-ferrous metals or alloys, especially light metals and...
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5820662 |
Dental investing material
A dental investing material is disclosed which comprises a combination of: (a) quartz and/or cristobalite, (b) a phosphate binder, and (c) aluminous cement, wherein said dental investing material...
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5769933 |
Activated carbon foundry sand additives and method of casting metal for reduced VOC emissions
An activated carbon and/or activated graphite foundry sand additive, and method of casting molten metal against a foundry sand containing the additive composition. In another embodiment, the...
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5766329 |
Inert calcia facecoats for investment casting of titanium and titanium-aluminide alloys
A calcia mold facecoat is applied to a mold for casting parts composed of reactive metals such as titanium and titanium aluminide. The facecoat is composed of a calcium carbonate based slurry...
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5730797 |
Mortar composition
A mortar composition for molding, casting or rendering purposes includes: (a) mixture comprising 1.5 to 8 parts by volume of powdered stone and one part by volume of powdered mica based on the...
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5702520 |
Method of making water based paint and formed glazing with paint thereon
The invention is directed to a method of making a water-based paint composition comprising sodium silicate, water, water-soluble base, metal oxide pigment, soda-lime-silica glass particles and at...
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5691257 |
Low density cellulated body and method
A cellulated, inorganic body, and a method of producing the body, the body having a very low bulk density and being resistant to aqueous and chemical attack, the cells being gas- or vacuum-filled,...
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5651815 |
Additive for foundry sand preblends
An additive for foundry sand preblends providing reduced smoke and other emissions, the additive comprising a mixture of one part iron oxide, one part of a highly volatile carbonaceous material...
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5643844 |
Method for stabilizing ceramic suspensions
Time-stable yttria slurries, and a method for forming such yttria slurries and articles therefrom are described. The method involves forming an intimate mixture comprising yttria and at least about...
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5641015 |
Water dispersible molds
A water-dispersible mold for making a casting comprises a water-insoluble particulate material, such as foundry sand, a binder which includes polyphosphate chains and/or borate ions, and at least...
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5626179 |
Process for manufacture of castings of reactive metals
In the production of castings from a melt of a reactive metal selected from the group consisting of titanium, titanium alloys, and titanium-based alloys, a reusable casting mold (20) is used; the...
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5622904 |
Glass material for molding optical elements
A glass material for molding an optical element and including lead and a lead compound is processed chemically and physically and includes a modificative ion component set such that an atomic...
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5587008 |
Sand molding media for iron castings
A sand molding medium for the use in founding of iron. The medium includes wettable uintaite as a carbon source supplemental to sea coal. The wettable uintaite is included in a carbon additive that...
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5580837 |
Ceramic material for use in casting reactive metals
An improved sintered ceramic core is used in a mold during the casting of a reactive metal. Prior to sintering, the core contains ceramic material which includes yttrium aluminate and alumina (Al2...
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5520726 |
Casting investment compounds
The present invention relates to investment compounds containing zeolites and to models and moulds made from these. The investment compounds according to the invention are used in metal casting,...
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5474606 |
Heat curable foundry binder systems
This invention relates to heat curable foundry binder systems comprising as separate components (a) a caustic solution of an alkali silicate and (b) hydrated aluminum silicate. The solution is...
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5470651 |
Mandrel for use in nickel vapor deposition processes and nickel molds made thereform
Mandrels for use in the manufacture of nickel shells by vapour deposition of nickel from gaseous nickel carbonyl. The mandrels comprise a body formed of a composite material of a matrix, for...
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5468285 |
Ceramic core for investment casting and method for preparation of the same
There is disclosed a core mix and a method of fabricating the core for use in investment casting. The core composition comprises an acid soluble borate binder in a high percentage by weight of the...
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5464797 |
Yttria-zirconia slurries and mold facecoats for casting reactive metals
The disclosure describes an aqueous ceramic slurry having from about 70-weight percent to about 85 weight-percent of a fused yttria-zirconia material. The weight percent of zirconia in the fused...
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5437890 |
Coatings for receptacles
The present invention relates to a coating for metallurgical receptacles comprising a slurry of slag fines, lime and water. The coating has proven effective at releasing the skull remaining in...
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5417751 |
Heat cured foundry binders and their use
This invention relates to heat-cured foundry binders comprising in admixture (1) a source of soluble silica, and (2) a source of soluble alumina, such that the source of silica, source of alumina,...
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5395437 |
Composition of a ceramic mold and its structure
A ceramic mold made up of Al2 O3, a silicon oxide mixture, C.M.C., CaCO3, Fe2 O3 or CoO, and water through a forging process under temperature within 500° C. to 1600° C., having a net of p...
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