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3981346 |
Method and apparatus for directional solidification
In making columnar grained castings the shell mold is spaced from the chill plate by a ceramic ring on which the mold is positioned, the ring being made thicker and/or of a different ceramic from...
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3965963 |
Mold and process for casting high temperature alloys
In the manufacture of hollow turbine blades or vanes especially those having a columnar crystalline growth in the alloy, the blade is cast in two opposed halves against a central mold element, the...
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3960511 |
Zone melting process
In a zone melting process, current is passed transversely through the process charge by electrodes arranged laterally of the charge consisting of the charge material and having a height...
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3942581 |
Method and apparatus for casting directionally solidified articles
The invention relates to an improved method of casting superalloy articles and more particularly to an apparatus for directionally solidifying eutectic superalloy compositions to produce a...
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3939895 |
Method for casting directionally solidified articles
The invention relates to a method of casting superalloy articles and more particularly to directionally solidifying eutectic superalloy compositions to produce a composite structure of a superalloy...
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3935058 |
Zone melting process
Increased heat control is obtained in the melting zone of a zone melting process utilizing an electric current passed longitudinally through the charge, to melt the charge, by constricting the...
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3931847 |
Method and apparatus for production of directionally solidified components
In the manufacture of cast articles such as gas turbine blades and vanes from high temperature alloys or eutectics, the heating of the mold in readiness for pouring and the cooling of the mold...
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3926245 |
Method for producing directionally solidified cast alloy articles and apparatus therefor
A method of producing directionally solidified cast alloy articles wherein a porous shell mold having a bottom fill cavity is positioned within an exothermic mass and over a chamber located over a...
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3908733 |
Method and apparatus for control of alloy in columnar grain castings
A method and a mold for casting high temperature alloys having as an ingredient an element that reacts with the mold and core material and is thereby depleted during alloy solidification. A...
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3897815 |
Apparatus and method for directional solidification
Control of manufacture of individual directionally solidified articles is provided by an improved apparatus, an important feature of which is a two-chamber vacuum casting furnace including a pair...
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3886994 |
Device for making a casting of a directionally solidified alloy
A method and device are disclosed for casting parts and ingots of a metal alloy with an ordered structure obtained by the progressive solidification of a liquid alloy. The device comprises a thin...
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3867496 |
Method and apparatus for producing fine-grated polycrystalline bodies
Fine-grained polycrystalline semi-conductor bodies of chalcogenides are produced by directional solidification under the influence of sonic vibrations in the range of about 500 to about 10,000 Hz....
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3847205 |
CONTROL APPARATUS FOR CONTINUOUSLY CASTING LIQUID METAL PRODUCED FROM CONSUMABLE ELECTRODES
The melting rate of pre-alloyed consumable electrodes, melted in a controlled atmosphere, is selected and controlled to provide a desired freezing rate of a solidified billet delivered from a...
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3847203 |
METHOD OF CASTING A DIRECTIONALLY SOLIDIFIED ARTICLE HAVING A VARIED COMPOSITION
A first molten alloy is poured into a mould and progressively cooled to produce a vertical columnar crystal growth. A second molten alloy is then poured in while the surface of the first alloy is...
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3841384 |
METHOD AND APPARATUS FOR MELTING AND CASING METAL
A system for producing metal castings wherein molten metal is introduced into a preheated mold and then directionally solidified by withdrawing heat from the bottom of the mold. The system involves...
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3838729 |
METHOD FOR MAKING A CASTING OF A DIRECTIONALLY SOLIDIFIED ALLOY
A method and device are disclosed for casting parts and ingots of a metal alloy with an ordered structure obtained by the progressive solidification of a liquid alloy. The device comprises a thin...
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3810504 |
METHOD FOR DIRECTIONAL SOLIDIFICATION
Method and apparatus for improving the prodution rate of directionally solidified castings employing an annular mold having one or more molding cavities therein and a pair of heat radiating...
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3795978 |
METHOD OF FABRICATING A COMPOSITE SUPERCONDUCTOR
A plurality of rods are assembled in a predetermined configuration to form a core which is surrounded by a molten matrix metal within a heated crucible. The temperature of the thusly charged...
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3790303 |
GAS TURBINE BUCKET
In a gas turbine bucket, having a blade and a root, composed of a eutectic alloy the blade is reinforced by eutectic fibers disposed in grain-orientated form, whilst in the root of the bucket the...
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3770047 |
APPARATUS FOR UNIDIRECTIONALLY SOLIDIFYING METALS
A pair of annular heat pipes are arranged end-to-end around a casting mold. One of the heat pipes is heated above the liquidus temperature of the alloy to be cast, while the other heat pipe is...
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3754592 |
METHOD FOR PRODUCING DIRECTIONALLY SOLIDIFIED CAST ALLOY ARTICLES
A method of producing directionally solidified cast alloy articles is disclosed wherein a porous, shell mold having open-ended mold cavities is filled with molten alloy while seated on a low heat...
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3753800 |
METHOD OF MAKING NICKEL-CHROMIUM-BERYLLIUM ALLOY
This invention relates to a method of making nickel-chromium-beryllium alloy having a microstructure which provides obstacles to plastic flow in the nickel rich matrix phase so that high strength...
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3714977 |
METHOD AND APPARATUS FOR THE PRODUCTION OF DIRECTIONALLY SOLIDIFIED CASTINGS
In making directionally solidified castings, a vertically movable radiation shield is supported in such a way that it may move upwardly with respect to the mold and the mold heater to permit upward...
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3690367 |
APPARATUS FOR THE RESTRUCTURING OF METALS
The apparatus and method for effecting the restructuring of metals disclosed herein provides a container for holding molten metal in a controlled atmospheric or vacuum environment into which an...
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3680625 |
HEAT REFLECTOR
Method and apparatus for producing columnar castings by precision investment casting techniques, wherein a refractory reflector is positioned in the furnace behind the molds contained therein to...
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3678988 |
INCORPORATION OF DISPERSOIDS IN DIRECTIONALLY SOLIDIFIED CASTINGS
Inert particles are uniformly dispersed within a molten alloy while it is being directionally solidified in a mold to cause a uniform dispersion within the casting, the dispersion being produced by...
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3677324 |
METHOD AND APPARATUS FOR PRODUCING A METAL ARTICLE
A method of producing a metal article having a unidirectional grain structure in a given direction comprises the steps of heating a mould for the article to a temperature above the melting point of...
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3669180 |
PRODUCTION OF FINE GRAINED INGOTS FOR THE ADVANCED SUPERALLOYS
The highly alloyed superalloys are cast as a well stirred two-phase liquid/solid mixture into a heated mold and solidified with the maintenance of a well stirred two-phase layer preceding the...
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3620686 |
METHOD FOR SOLIDIFYING WHILE RUBBING THE SOLID-LIQUID INTERFACE
The microstructure and the impurity distribution in a solid which has been directionally solidified from a melt or solution can be strongly influenced by rubbing the solid-liquid interface during...
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3620289 |
METHOD FOR CASTING DIRECTIONALLY SOLIFIED ARTICLES
Articles in which the crystalline structure is directionally controlled as, for example, in directionally solidified or single crystal articles are cast in individual molds with a mechanism to...
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3620288 |
DIRECTIONALLY SOLIDIFIED CASTINGS
Production of directionally solidified castings using a consumable arc melting technique with cooling from the base of the apparatus by periodically interrupting the arc.
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3607115 |
CRYSTAL PULLING FROM MOLTEN MELTS INCLUDING SOLUTE INTRODUCTION MEANS BELOW THE SEED-MELT INTERFACE
An apparatus and method are disclosed for growing crystals from a melt of a molten solvent metal that is saturated with a solute. Heat is withdrawn through a seed contacting the surface of the melt...
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3601179 |
MULTICHAMBER DIRECTIONAL SOLIDIFICATION VACUUM CASTING FURNANCE
A vacuum melting and casting apparatus for directional solidification of metallurgical castings which employs a single traveling melting chamber and a plurality of molding chambers. By successively...
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3598172 |
PROCESS OF CASTING WITH DOWNWARD-UNIDIRECTIONAL SOLIDIFICATION
Unidirectionally solidified castings are produced by inverted solidification using a chill plate at the top of the mold and controlling the temperature gradient to cause solidification to occur...
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3598169 |
METHOD AND APPARATUS FOR CASTING DIRECTIONALLY SOLIDIFIED DISCS AND THE LIKE
Apparatus and method for inducing radial directional solidification in parts having a relatively large dimension at right angles to the major axis such as discs and the like, in which, for example,...
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3592455 |
DEVICE FOR THE DISPLACEMENT OF A SOLIDIFICATION SOLID-LIQUID INTERFACE
Device for growing monocrystals of a material comprising an elongated container for the material and two ovens through which the container is circulated. A first oven maintains the position of the...
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3538981 |
APPARATUS FOR CASTING DIRECTIONALLY SOLIDIFIED ARTICLES
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3532155 |
PROCESS FOR PRODUCING DIRECTIONALLY SOLIDIFIED CASTINGS
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3520677 |
METHOD OF MANUFACTURING METAL BLANKS HAVING AN ANISOTROPIC CRYSTALLINE STRUCTURE
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3508914 |
METHODS OF FORMING AND PURIFYING NICKEL-TITANIUM CONTAINING ALLOYS
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3432369 |
METHOD OF MAKING MAGNETICALLY ANISOTROPIC PERMANENT MAGNETS
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3410665 |
Apparatus for producing striationless bodies of metal and semiconductor substances containing impurities
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3401021 |
Apparatus of zone refining and controlling solute segregation in solidifying melts by electromagnetic means
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3376915 |
Method for casting high temperature alloys to achieve controlled grain structure and orientation
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3366362 |
Metal shaping tools includng columnar structures
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3346039 |
Mold heater
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3290738 |
Apparatus for producing semiconductor devices
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3268963 |
Casting of metal ingots
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3260505 |
Gas turbine element
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3211547 |
Treatment of molten aluminum
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