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8100165 |
Investment casting cores and methods
An investment casting core combination includes a metallic casting core and a ceramic feedcore. A first region of the metallic casting core is embedded in the ceramic feedcore. A mating edge...
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8096343 |
Method for precision casting of metallic components with thin passage ducts
In precision casting of metallic components with very thin passage ducts, in particular turbine blades, by the lost-wax process, the ceramic core pins provided for forming the passage ducts are...
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8087450 |
Fumed metal oxides for investment casting
Investment casting shells are manufactured by incorporating fumed metal oxide dispersions, or doped fumed metal oxides as a binder into the casting shell. The investment casting shells containing...
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7967055 |
Non-oxidizable coating
A substrate is coated by applying an essentially pure aluminum first layer to a surface of the substrate. At least a first portion of the first layer is oxidized so as to provide a protective...
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7942188 |
Refractory metal core
A cast metal article, such as a turbine engine component, is made by shaping a body of refractory metal particles to form a molded refractory metal article. The molded refractory metal article is...
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7918265 |
Method and apparatus for as-cast seal on turbine blades
An investment casting mold article includes a wall for retaining casting material and a cavity defined by the wall. The cavity includes an airfoil portion, a root portion adjacent to the airfoil...
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7882885 |
Systems and methods for reducing the potential for riser backfilling during investment casting
Systems and methods for reducing the potential for riser backfilling during investment casting are provided. In this regard, a representative method for performing investment casting includes:...
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7810547 |
Single crystal seed
A single crystal seed for use in casting a single crystal article, consisting essentially of, in weight %, about 5.0% to about 40.0% Mo, up to 0.1% C and balance essentially Ni wherein the seed is...
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7779892 |
Investment casting cores and methods
An investment casting core combination includes a metallic casting core and a ceramic feedcore. A first region of the metallic casting core is embedded in the ceramic feedcore. The metallic casting...
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7753104 |
Investment casting cores and methods
A method involves forming a core assembly. The forming includes molding a first ceramic core over a first refractory metal core to form a core subassembly. The subassembly is assembled to a second...
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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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7575038 |
Single crystal seed
A single crystal seed for use in casting a single crystal article, consisting essentially of, in weight %, about 5.0% to about 40.0% Mo, up to 0.1% C and balance essentially Ni.
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7562691 |
Core for turbomachine blades
The present invention relates to a ceramic core used in the manufacture, by lost wax casting, of a turbomachine blade with cooling cavities and a squealer, comprising at least one main core,...
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7533713 |
Ceramic casting mold for casting metal and process for production thereof
Casting mold for metal casting, in particular precision casting of fine parts of steel, in which at least the main part of the casting mold is made of porous ceramic with a high thermal coefficient...
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7513296 |
Clustered investment-casting shells for casting thin-walled golf club-heads of titanium alloy
Investment-casting shells are disclosed that have at least one cluster of individual club-head casting molds for casting thin-walled, titanium alloy club-heads at high process yield and low...
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7500511 |
Molding composition and method of use
A slurry composition for a mold and method of use thereof. The slurry composition includes about 45-80% by weight alumina, about 10-30% by weight silicon carbide, and about 10-50% by weight...
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7475717 |
Mold
A mold having a shell and a porous layer formed on the surface of the cavity of the shell. The mold can be suitably used for manufacturing a porous body having a porous layer on the surface...
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7448433 |
Rapid prototype casting
Methods for rapid prototype casting metal components, wherein the metal components are cast in a secondary ceramic mold, the secondary ceramic mold is cast in a primary mold, and the primary mold...
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7413001 |
Synthetic model casting
A synthetic model of a component is created from a 3-D numerical model thereof. A core is then cast inside the synthetic model. The synthetic model may then be removed from the cast core, and then...
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7325587 |
Method for casting cooling holes
A method for casting a cooled component includes molding a sacrificial pattern. A plurality of holes are formed through the pattern. A shell is formed over the pattern including filling the holes....
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7306026 |
Cooled turbine airfoils and methods of manufacture
An investment casting pattern is formed by installing a first core to a first element of a molding die to leave a first portion of the first core protruding from the first element. After the...
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7296615 |
Method and apparatus for determining the location of core-generated features in an investment casting
A secondary datum scheme is used for identifying the location of the core-produced internal geometry of hollow investment cast metal parts that are made using a free-floating core design for...
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7237595 |
Casting mold
According to the prior art, through-holes in components are often introduced after the production (casting) of the component. This entails additional outlay in terms of time and equipment. The time...
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7231955 |
Investment casting mold design and method for investment casting using the same
A method for investment casting includes the steps of positioning a base plate relative to a die; molding a first material between the die and at least a first surface portion of the base plate;...
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7174945 |
Refractory metal core wall thickness control
In accordance with the present invention, a casting system is provided which broadly comprises a core and a wax die spaced from said core, a refractory metal core having a first end seated within a...
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7152659 |
Component casting
A deflector element is provided, in order to improve temperature interface control with respect to directional solidification of a component casting. This deflector element is formed during the...
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7048034 |
Investment casting mold and method of manufacture
The invention relates to a investment casting shell molds and their method of manufacture. The method entails mixing fiber and refractory filler to form a dry blend; mixing the dry blend with a...
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7036556 |
Investment casting pins
A pin used in investment casting, or the lost wax process, to support the ceramic core of a mold includes a core formed of a metal which provides suitable strength to maintain the position of the...
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7032643 |
Investment moulding process and apparatus
An investment mould process for forming a cast member is described. The process comprises forming a precursor casting (12) from a master mould (10). The master mould (10) has an internal surface...
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7032647 |
Pressure casting using a supported shell mold
A method of casting including forming a shell mold around a pattern fabricated from an expendable material and then removing the expendable material from the shell mold. The shell mold is located...
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7011141 |
Apparatus and method for producing single crystal metallic objects
A mold is provided for enabling casting of single crystal metallic articles including a part-defining cavity, a sorter passage positioned vertically beneath and in fluid communication with the...
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7004230 |
Investment casting shells and compositions including rice hull ash
Incorporation of rice hull ash into investment casting shell molds improves the permeability, shell build thickness, and/or shell build uniformity of the molds. A method to make the molds entails...
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6920910 |
Casting device, process for producing a casting device and method of using the casting device
A casting device includes a wall which is formed in the manner of a sandwich structure from a front layer, a yielding intermediate layer and a supporting outer layer. In this way, the...
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6896036 |
Method of making turbine blades having cooling channels
To prevent movement of a ceramic core in a ceramic shell for the investment casting of a turbine blade, the free end of the core has one or more pins embedded therein so that the pins project into...
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6845811 |
Reinforced shell mold and method
A method of making a ceramic shell mold comprises repeatedly coating a fugitive pattern of an article to be cast with a ceramic slurry layer and applying on the ceramic slurry layer a refractory...
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6845807 |
Metal casting core assembly for casting a crankshaft
A core box assembly for casting a crankshaft. The core box assembly comprises axially aligned cores that define different axial portions of a cavity that receives molten metal to cast the...
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6749006 |
Method of making investment casting molds
A method of forming a ceramic investment shell mold about a fugitive wax pattern of an article comprises coating the pattern with ceramic slurry, applying a ceramic particulate material heated...
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6739381 |
Method of producing a turbine blade
In a method of producing a turbine blade in hollow section, an especially low defect or scrap rate is to be ensured. To this end, a first core element is connected via a number of approximately...
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6629559 |
Molds for casting with customized internal structure to collapse upon cooling and to facilitate control of heat transfer
A new mold solves problems that arise from differential changes in geometry inherent to casting metal in a ceramic mold, by control of the internal morphology between the surfaces of the mold that...
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6626230 |
Multi-wall core and process
Method making a multi-wall ceramic core for use in casting airfoils, such as turbine blades and vanes, wherein a fugitive pattern is formed having multiple thin wall pattern elements providing...
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6598654 |
Molding sand appropriate for the fabrication of cores and molds
The molding sand comprises hollow microspheres of aluminum silicate, preferably with an aluminum content between 15 and 45% by weight, a wall thickness between 3 and 10% of the particle diameter...
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6568458 |
Reinforced ceramic shell mold and method of making same
A ceramic investment shell mold is reinforced with a carbon based fibrous reinforcement having an extremely high tensile strength that increases as the mold temperature is increased especially...
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6540013 |
Method of increasing the strength and solids level of investment casting shells
The strength and solids level of an investment casting shell is increased by incorporating at least one microsilica into the shell.
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6505678 |
Ceramic core with locators and method
Method and apparatus for providing a plurality of locator elements on a ceramic core involves placing a ceramic core in a die cavity of die, positioning a plurality of pins in the die cavity with...
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6497272 |
Single crystal casting mold
A mold for single crystal casting of molten metallic material is provided having a metallic seed crystal with a passage in an end thereof and an end of a fugitive connector member inserted in the...
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6467534 |
Reinforced ceramic shell molds, and related processes
A ceramic casting shell mold having a pre-selected shape comprises alternate, repeating layers of a ceramic coating material and a ceramic stucco, defining a total thickness of the shell mold; and...
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6446698 |
Investment casting with exothermic material
Method and investment shell mold for casting comprising introducing molten metallic material into an investment shell mold to fill a mold cavity and provide an upper surface of the molten metallic...
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6431255 |
Ceramic shell mold provided with reinforcement, and related processes
A ceramic casting shell mold having a pre-selected shape is described. It includes alternate, repeating layers of a ceramic coating material and a ceramic stucco, defining a total thickness of the...
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6349759 |
Apparatus and method for casting a metal article
To form a mold for casting a metal article, metal pins are inserted through a pattern. End portions of the metal pins are bent after the pins have been inserted through the pattern. The pattern and...
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6345663 |
Core compositions and articles with improved performance for use in castings for gas turbine applications
A method for fabricating a fired ceramic article, a green product, and a fired ceramic article, all for use as a core in the investment casting of directionally solidified eutectic and superalloy...
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