Abstract: The present invention relates to wash compositions which comprise a solvent component and a solids component wherein the solvent component comprises as main component water or one or more alcohols, and the solids component comprises as main component a mixture of metakaolinite and pyrophyllite, which can be applied onto casting moulds, casting moulds comprising these wash compositions and the use thereof, in particular in centrifugal casting processes and large-scale casting processes.

Abstract: A method of removing an yttria-based core from a niobium-based part is described. In the method, the core is treated with an effective amount of a leaching composition. The leaching composition is based on nitric acid, or a combination of nitric acid and phosphoric acid. The core material is effectively removed from the niobium-based part, and the process of removing the core does not detrimentally affect the quality of the part. Related casting techniques for various niobium-based parts are also described.

Abstract: The disclosure relates to a platinum alloy comprising (a) 55 to 63 wt. % of platinum, (b) 2 to 10 wt. % of cobalt, and (c) 27 to 43 wt. % of copper. The disclosure further relates to a platinum alloy comprising (a) 70 to 79.5 wt. % of platinum, 2 to 10 wt. % of cobalt, and (c) 10.5 to 28 wt. % of copper. The platinum alloys have excellent mechanical and optical properties for use in the production of ornamental articles such as rings, necklaces, earrings, watch bands, watch bodies and other jewelry. The disclosure further relates to a method of preparing the platinum alloys and their use in the production of ornamental articles. Still further the disclosure relates to ornamental articles comprising the platinum alloy and a method of production thereof.

Abstract: A heat resistant super alloy suffices the following conditions: carbon 0.01-0.2 percent in weight chromium 8-10 percent in weight aluminum 4-6 percent in weight titanium 2-4 percent in weight molybdenum 1.5-2.8 percent in weight tungsten 10-13.5 percent in weight niobium 1.5-2.5 percent in weight boron 0 < B ? 0.04 percent in weight zircon 0 < Zr ? 0.15 percent in weight the contents of hafnium and lanthanum together amounts to 0 < Hf + La ? 1.5 percent in weight, optionally traces of tantalum, the remainder being nickel. Such an alloy is preferably used for turbine wheels and particularly for turbochargers.

Abstract: An electrical contact comprising a matrix of an alloy of a high electro-conductive metal and a low melting point metal and particles of a refractory metal dispersed in the matrix. The electrical contact comprises the alloy containing a low melting point metal of at least one of Sn, Te and Be, and the refractory metal is Cr. The alloy comprising the low melting point metal in an amount of 0.5 to 3% by weight and the balance being Cu.

Abstract: A lance nozzle insert for a refractory lance for feeding an additive wire into a quantity of molten metal below the surface of the molten metal surface is made of a material comprising stabilized zirconium oxide and graphite substantially increasing the corrosion resistance of the lance nozzle insert.

Abstract: A method for producing a cylinder crankcase is provided, in which a hypereutiectic aluminum-silicon alloy is cast in a rheocasting or thixocasting process and is cast at a temperature ranging from 520° C. to 580° C.

Abstract: A balancing system for different compressors utilizes a counterweight having a common exterior configuration. The mass of the counterweight is optimized for each compressor by changing the size of a recess located in the counterweight. In one embodiment, the recess is an arcuately shaped recess; and in another embodiment, the recess is a plurality of holes.

Abstract: The present disclosure relates to an iron alloy sheet comprising ?-Fe, and/or ?-Fe phases wherein the alloy has a melting point in the range of 800 to 1500° C., a critical cooling rate of less than 105 K/s and structural units in the range of about 150 nm to 1000 nm.

Abstract: Various embodiments of the invention include products and parts including a frictional damping means and methods of making and using the same.

Abstract: A method of forming Heusler or Heusler-like alloys of formula X2YZ or XYZ comprises providing a crucible comprised of at least one metal oxide material thermodynamically stable to molten transition metals; supplying predetermined amounts of constituent elements or master alloy materials of the alloy to the crucible; and melting the constituent elements or master alloy materials under vacuum or a partial pressure of an inert gas to form alloys containing less than about 50 ppm oxygen. Crack-free alloys are formed by casting the alloys in a mold utilizing a multi-stage stress-relieving, heat-assisted casting process. Also disclosed are crack-free Heusler and Heusler-like alloys of formula X2YZ or XYZ containing less than about 50 ppm oxygen and deposition sources, e.g., sputtering targets, fabricated therefrom.

Abstract: A method for manufacturing a composite metal material combined with a nanocarbon material comprises heating a metal alloy to a half-melted state in which both liquid and solid phases are present. Next, a nongraphitized nanocarbon material is added to the half-melted metal alloy and stirred to form a composite metal material combined with a nanocarbon.

Abstract: A die casting process using pattern recognition techniques to identify those die castings manufactured under conditions likely to produce a die casting which would subsequently prove unacceptable for use. By promptly identifying such die castings, they may be discarded before being shipped to a remote facility for further processing. As a result, the rejection rate of die castings at the remote facility may be reduced and the raw materials used to form the discarded die castings may be more readily recycled.

Abstract: A casting core for a turbine blade includes a plurality of rods extending above a shank. The rods define internal cooling channels in the airfoil of the blade, and the shank defines an inlet channel in the dovetail of the blade. A plurality of stubs are clustered together at a bulb joined to the shank and radiate outwardly to integrally join different ones of the rods for increasing strength of the core.

Abstract: A turbine engine component has an airfoil portion with a pressure side wall and a suction side wall and a cooling system. The cooling system has at least one cooling circuit disposed longitudinally along the airfoil portion. Each cooling circuit has a plurality of staggered internal pedestals for increasing heat pick-up.

Abstract: An as-cast carbidic ductile iron is provided, having a pearlitic matrix with 5-50% by volume carbides and high wear resistance properties. The as-cast carbidic ductile iron is produced without an austempering heat treatment step. The as-cast carbidic ductile iron preferably includes a carbide stabilizing element and a spheroidizing agent.

Abstract: A crankcase for a multiple-cylinder four-cycle engine, including an upper crankcase and a lower crankcase which are joined to each other at a joint surface; a separating wall which is integrally cast with the upper crankcase and the lower crankcase to extend from the joint surface toward the opposite side of the joint surface and are configured to define crank chambers corresponding to adjacent cylinders; and a crank journal bearing hole which is formed on the separating wall and is configured to support a crankshaft. At least the separating wall formed in the upper crankcase has a thickness that increases from the joint surface of the crankcase to a region near a deepest portion of the crank journal bearing hole and decreases from the region near the deepest portion of the crank journal bearing hole toward the opposite side of the joint surface of the crankcase.

Abstract: A battery part such as a battery terminal and method of making the same with the battery part having a sealing region or sealing bead located on a lateral face of the acid ring with the beveled sealing region increasing the resistance to leakage therepast as the container shrinks. Another embodiment of the invention comprises a battery part with a bifurcated acid ring end and a beveled end face. The invention further includes the method of forming a battery terminal with an end face of the acid ring having a bifurcated end lip and a beveled face that permits one to either use the battery terminal in an as is condition or in a flared condition wherein a lip on the acid ring is flared to form a beveled sealing region on the lateral face of the acid ring.

Abstract: A mold used to manufacture, through metal mold casting, a damper that is fixed onto a housing in a disc drive and reduces a vibration of the housing, the disc drive recording information in and reproducing information from a recording medium. The mold includes a sectionally concave body that defines a shape of the damper, a first gate that introduces molten metal to the body from a runner, and is provided on a first side opposite to a concave of the body, and a second gate that introduces the molten metal to an overflow well from the body, and is provided at least one of a second side perpendicular to the first side, and a third side perpendicular to the second side and parallel to the first side.

Abstract: The invention provides a method for manufacturing an automotive component member, including the steps of: (A) positioning at least one insert into a mold, wherein the insert defines a plurality of holes; and (B) casting a portion of the automotive component member in the mold to substantially encapsulate the insert such that a major portion of the insert is substantially non-bonded with the casting material to provide a proper interfacial boundary with the casting material for damping. The method may include the step of coating the insert to prevent bonding between the insert and the casting material. A damped automotive component member having an insert cast therein is also disclosed.

Abstract: A method of forming at least one concavity of a selected size and shape within a surface of an internal passageway of a metallic component comprises: depositing a ceramic-based material by a direct-write technique onto a ceramic core which is suitable for forming the internal passageway during a casting process to form the metallic component, wherein the ceramic-based material is deposited as a positive feature; heat-treating the deposited ceramic-based material; forming the metallic component by a casting process in which the ceramic core is incorporated into the casting, in a position selected as a desired position for the internal passageway; and then removing the ceramic core from the metal component after the casting process is complete, thereby forming the internal passageway, with the concavity contained within the surface of the passageway, said concavity formed by removal of the positive feature of the ceramic-based material.

Abstract: A green product for use in fabricating a ceramic article comprises a ceramic powder immobilized within a silicone matrix, wherein the silicone matrix comprises one or more cross linked or polymerized silicone monomers and/or oligomers, wherein the one or more cross linked or polymerized silicone monomers and/or oligomers have a alkenyl reactive functional group and a hydride reactive functional group. Processes for forming a green product and a ceramic core with the silicone monomers and/or oligomers are also disclosed.

Abstract: An improved method for manufacturing a vaned diffuser (101) of a turbocharger, preferably from aluminum or an aluminum alloy, where the vaned diffuser possesses at least one axis (115) suitable for separating the vaned diffuser from its rigid mold by translation. Casting of a raw vaned diffuser (407) having an optional central hub (205) and, optionally, ribs on the hub (209), is disclosed in a plaster mold (305). The hub and optional ribs are machine finished from the raw vaned diffuser to yield the finished vaned diffuser (101). The method provides the high degree of dimensional accuracy, and high quality surface finish, required to produce a vaned diffuser of an efficient turbocharger.

Abstract: A truss structure well suited for use as an engine strut on a commercial aircraft. The truss structure is cast as a single piece integrally formed component from a titanium alloy or another suitably lightweight, structurally strong material. The truss structure includes a plurality of integrally formed attachment structures which enable the truss structure to be secured to an element of an aircraft such as a wing. A plurality of attachment areas for an element such as an engine is also formed that allows the element (e.g. jet engine) to be secured to the truss structure. The truss structure includes a plurality of elongated rails and truss elements that are arranged to provide redundant load paths to ensure that a failure of any one truss element or elongated rail will not result in a failure of the overall truss structure to support whatever load is required.

Abstract: An indirect solid free form scaffold manufacturing technique is provided. More particularly, the present invention provides a set of molds, casting methods, mold removals, and surface modification techniques that are compatible with image-based design methods and with solvent, melt, and slurry casting of polymers and ceramics.

Abstract: A process for producing a spatially shaped carrier layer (3) which is of foil-like design from hard brittle material includes: providing a basic mold (1) having a spatially shaped surface, depositing a material which is in the gas or liquid phase on the spatially shaped surface, solidifying the material which has been deposited on the spatially shaped surface to form a hard brittle material layer (3), and separating the hard brittle material layer (3) from the spatially shaped surface in order to obtain the carrier layer (3) which consists of hard brittle material.

Abstract: A housing configuration for a liquid filter in which the housing is cup-shaped and is produced by a molding technique. The housing lid or lid is secured to the housing (10) by a course of threads (28) which can be produced without forming any undercuts. This is achieved inside an area (30) around the mold parting plane (29) by providing recesses (31) on the course of threads in the horizontal areas. As a result, the thread can be produced directly on the housing by the initial molding technique without any post-molding processing measures, so that manufacturing costs are reduced.

Abstract: The present invention relates to metallurgical recycling of waste products, preferably titanium alloys chips scrap.

Abstract: A method for the refining of primary silicon in hypereutectic alloys by mixing a hypereutectic alloy and a solid/semi-solid hypoeutectic alloy is described. The method provides control of the morphology, size, and distribution of primary Si in a hypereutectic Al—Si casting by mixing a hypoeutectic Al—Si liquid with one that is hypereutectic to impart desirable mechanical properties.

Abstract: A mold and a method of casting a part wherein the casting surfaces of the mold including the nooks and crannies of the mold are bounded by pitted mold surfaces with the pitted mold surfaces having surface voids therein that are sufficiently small to prevent the molten metal to enter therein; however, when the molten metal is poured in the mold having the pitted surfaces the molten metal solidifies on top of the pitted surface without entering into the pits in the mold surface, yet at the same time the molten metal flows smoothly over all the mold surfaces including the structural nooks and crannies of the mold to form a cast product that is substantially free of voids and fissures.

Abstract: A method for the production of a layered metal slab by casting, which strip contains a central layer (2) and surface layers (3) on either side of it. The central layer (2) is introduced as a strip through a mould (4), into which is introduced molten metal (5), the mould (4) is cooled, whereupon a layered structure (1) is formed as the metal solidifies.

Abstract: An apparatus and a method for the casting of metals comprising the steps of: indexing a mould in series on a rotating carousel to a pouring station, skimming station and a mould transfer station; casting molten metal into the mould at the pouring station; skimming dross from the molten metal at the skimming station; transferring the mould containing molten metal from the mould transfer station to a cooling section and replacing it at the mould transfer station with an empty mould; transferring a cooled mould containing a solidified metal ingot from the cooling section to a demoulding station remote from the rotating carousel; removing the solidified ingot from the mould; removing the pin/hook members from the ingot; returning the pin/hook members to the empty mould; returning the empty mould to the mould transfer station; and transferring the ingot to the further processing.

Abstract: The invention relates to a method for the uphill casting of cast pieces in sand dies with resinous, or, in particular, binder-containing cast cores and controlled solidification of metallic cast pieces, comprising at least one cavity. Said pieces are, in particular, prototypes of engine blocks, or cylinder heads, for example, for internal combustion engines, with a cavity for the throughflow of cooling water. In order to guarantee a low-turbulence flow of fluid metal melt on ventilating the cast mould, the cast mould (1), with at least one feed (24), is connected to a sprue cup (24) by means of a casting system (22) and the metal melt contained therein forced into the cast mould (1) through the casting system (22) by gravity. After filling the cavity (11′) a vacuum is created in the metal melt, greater than the pressure of core gases generated in the core.

Abstract: A process for producing a tube target for cathode sputtering plants, in which the tube target is formed from a metallic inner tube (target holder) made of a first material with a first melting point of Ts1≧900 K and a metallic outer tube (target) that concentrically surrounds the inner tube and that is made of a second material with a second melting point of Ts2≦800 K. The inside diameter of the outer tube and the outside diameter of the inner tube are proportioned in such a way that the two tubes fit together tightly and are mechanically firmly joined. The outer tube is formed by casting the second material in a molten state in a heated, vertical, A cylindrical permanent mold, which has a heated mandrel that constitutes the inner tube.

Abstract: This invention relates to an organic foundry binder containing an alkyl resorcinol, or preferably a readily available mixture of alkyl resorcinols, and derivatives thereof. Preferably, the organic foundry binder is a furan binder. Foundry mixes are prepared by mixing the binder with a foundry aggregate. Foundry shapes (molds and cores) are prepared by shaping the mix and allowing it to cure to form a workable foundry shape. The invention also relates to the preparation of metal castings using the foundry shapes and the metal castings prepared with the foundry shapes.

Abstract: The present invention discloses a white gold composition consisting essentially of copper, silver, zinc, and manganese, and further consisting of small amounts of tin, cobalt, silicon/copper and boron/copper. More particularly, the white gold composition of the present invention discloses a white gold composition consisting essentially of about 36% to about 57% copper, about 10% silver, about 18.2% to about 24.2% zinc, about 14% to about 28.9% manganese, and the balance further consisting of about 1% tin, about 0.025% to about 0.03% cobalt, about 0.52% silicon/copper, and about 0.2% boron/copper. An objective of the present invention is to provide for methods and compositions of casting, fabricating and soldering white gold that does not incorporate nickel or palladium. The present invention also discloses no tarnish results when hydrogen is used as a catalyst to all compositions.

Abstract: A method of forming a turbine engine component, includes providing a mold having a textured region, pouring a molten alloy into the mold, and cooling the molten alloy to form a turbine engine component, wherein the turbine engine component has an enhanced surface area region corresponding to the textured region of the mold, the enhanced surface area region comprising randomly arranged bumps.

Abstract: The invention relates to a process for producing shaped metal parts, in particular reduced-weight shaped parts made from metallic materials.

Abstract: A method for manufacturing a Sn based alloy containing a finely dispersed Sn-Ti compound by the steps comprising melting Sn by heating at 1300 to 1500° C in vacuum or under an inert gas atmosphere, adding 0.1 to 5% by weight of Ti followed by melting by heating, and casting the molten alloy into a copper mold directly or through a pouring cup. The Sn based alloy obtained by this method contains the Sn-Ti compound having a maximum particle diameter of 30 &mgr;m and mean particle diameter of 5 to 20 &mgr;m. A precursor of a Nb3Sn wire is also obtained by an inner diffusion method using this Sn based alloy. The Nb3Sn wire manufactured by using the Sn based alloy of the present invention exhibits excellent superconductive characteristics. The method of the present invention enables the ingot to be free from a shrinkage cavity appearing during the manufacturing process.

Abstract: The present invention provides a cast iron component for enveloped casting which is characterized by that the cast iron component has a surface to which enveloped casting is applied and which has a surface roughness such that a maximum height Ry is from 65 to 260 &mgr;m and a mean spacing of profile irregularities Sm is from 0.6 to 1.5 mm; an enveloped casting product using it; and a method for its production.

Abstract: Method of making articles comprising polycrystalline &agr;-Al2O3 fibers within a matrix of aluminum, or an alloy of aluminum and up to about 2% copper.

Abstract: The housing used in the electronic apparatus has an outer wall. The outer wall is formed by injecting a metal material from a plurality of gates into a molding space in a metal die. The outer wall includes a first end portion situated on an upstream end along a flowing direction of the metal material, a second end portion situated on a downstream end of the flowing direction of the metal material, and an injection portion formed on the first end portion where the plurality of gates of the metal die are situated, forming a space between the first end portion and the injection portion.

Abstract: A carburetor having a plurality of orifices at different locations adjacent to the sidewall of the airflow passage therethrough and connecting passages communicating the orifices with a fuel source, such that different airflow conditions through the airflow passageway will generate different negative pressure conditions in the respective orifices and connecting passages, such that fuel will be drawn to the airflow passageway through the orifice or orifices and connected passage or passages with the greatest negative pressure conditions therein, a primary operational result being fuel delivery capable of rapidly changing corresponding to rapidly changing airflow conditions in the airflow passageway corresponding to changing operating conditions.

Abstract: A method of manufacturing a turbocharger including a housing with a compressor housing portion, turbine housing portion, and a connecting portion is such that an appropriate attitude setting for various portions is preselected, and the housing is then manufactured using a casting technique. The geometry of the connecting portion is circular and concentric with respect to a common center line passing through all three portions.

Abstract: For improvement in production efficiency by elimination of a centering of an ingot supplier to an ingot supply opening upon reconnection of a melting and holding furnace to a die cast machine, there are provided an intermediate handler having a receiving case configured substantially in a channel shape open at both ends thereof, and pivoted on the furnace cover to be movable between a substantially horizontal lying position with one end thereof coincident with an ingot exit of the preheater to allow for a preheated ingot to be forward therein in a lying position with a longitudinal axis thereof set substantially horizontal and a substantially vertical standing position with the other end thereof coincident with the ingot supply opening to bring a distal end of the preheated ingot forwarded therein into abutment with the shutter to make the preheated ingot stand thereon, and an ingot supplier having a pawl chuck configured to enter inside the receiving case from an open side of the receiving case in the substa

Abstract: An image display apparatus including a metal outer housing for which a filling process in a thixotropic forming method has been improved. On a reference surface of an upper housing composing the outer housing of a projection display apparatus, there are formed convex sections, and a supporting rib, the foregoing convex sections extending in the direction where a semimolten metal flows, and the foregoing supporting rib intersecting with the foregoing convex sections. Furthermore, protrusions are formed protruding from the reference surface, and flowing ribs are independently formed on base sections of the protrusions. These convex sections, supporting rib, and flowing ribs are formed in the upper housing for guiding the semimolten metal in the thixotropic forming method, and thereby ensuring filling characteristics of the semimolten metal into individual molds.

Abstract: A metal material is placed on a lower mold of a press metal mold which has an upper mold and the lower mold not having engagement portions. The metal material is fused by a high energy heat source, and obtained molten metal over a melting point is pressed with the press metal mold and transformed into a predetermined configuration. The molten metal is cooled at a rate over a critical cooling rate simultaneously with or after the transformation, and the molded product of amorphous metal in predetermined configuration is obtained.

Abstract: A method for producing depressed center railcars involves a combination of casting and fabrication. Transition members of the railcar can be casted, preferably with interlocking ledges on the ends of the transition members. The center section can be fabricated from, preferably precambered, longitudinal stringers which can then be connected between the casted transition members via the interlocking ledges. Standard steel warehouse plates can be attached to the fabricated framework of longitudinal stringers to form the surface of the center section. The transition members can be cast with integral provision to accept a center plate member. The fabricated framework of stringers can include reinforcement members for added strength. The framework can also be constructed to allow for the placement of the parts of the brake system and other components on the underside of the railcar.

Abstract: The target material for a sputtering target for depositing silicon layers in their nitride or oxide form by means of reactive cathode atomization, such as e.g. Si3N4 or SiO2 in the form of optical functional layers or in the form of thermal protective layers on glass substrates, is a cast silicon element, that has been solidified from the melt condition and which forms a parallelepiped, with a dopant, that has been mixed in with the melt, whereby the dopant is 1 wt % to 15 wt % aluminum, and whereby the casting mold preferably has a cavity which forms a parallelepiped.

Abstract: The method of casting of the present invention is capable of making volume of a feeder head can be small and making cooling rate of the feeder head can be easily made lower than that of a cavity. The method is executed in a casting machine, which includes a casting die, in which the feeder head is provided between a metal inlet and the cavity and in which heat insulating of the feeder head is greater than that of the cavity so as to make cooling rate of the feeder head lower than that of the cavity. The method comprises the steps of: pouring a molten metal into the cavity; reacting the molten metal on a deoxidizing compound in the cavity so as to deoxidize an oxide film formed on a surface of the molten metal; and supplementing the molten metal in the feeder head to the cavity when the molten metal in the cavity is solidified and shrinked.