Abstract: A process is used for applying carbiding agents to the surface of ferrous metal castings, using the “lost foam” method. Carbiding agents are applied to the foam form at selected places so that the final product has the desired amount of carbidic content at the right locations to endure high stress applications on the casting.

Abstract: An austenitic cast iron according to the present invention has Ni: from 7 to 15% by mass, and is characterized in that it comprises a base structure in which an austenite phase makes a major phase even in ordinary-temperature region by adjusting the respective compositions of Cr, Ni and Cu, excepting C and Si, so as to fall within predetermined ranges. In accordance with the present invention, it is possible to obtain an austenitic cast iron, which is excellent in terms of oxidation resistance and the like, inexpensively, while reducing the content of expensive Ni.

Abstract: A device and a method for the low-pressure casting of metal melts, comprising a casting furnace (1), a feed channel (2) for the metal melt, a channel (4) in the direction toward the casting mold (5), and a feed (6) for the gaseous pressure application, an intermediate container (7) being disposed between the casting mold (5) and the channel (4), and an access (8) for adding an inoculating agent (9) being provided in the intermediate container (7).

Abstract: A cast iron alloy for cast iron products characterized by a high oxidation stability at surface temperatures of 800° C. to 950° C., comprising the chemical components 2.8 to 3.6% C by weight; 2.0 to 3.0% Si by weight; 2.5 to 4.3% Al by weight; up to 1.0% Ni by weight; up to 0.8% Mo by weight; up to 0.3% Mn by weight; 0.002 to 0.1% Ce by weight; 0.023 to 0.06% Mg by weight; up to 0.01% S by weight, residual Fe, and the usual impurities.

Abstract: The present invention provides tough cast iron and cast iron semi-finished products excellent in workability without heat treatment requiring massive heat energy and long time and a method of production enabling these to be efficiently produced, that is, cast iron of ingredients of white cast iron where particles of spheroidal graphite or flattened graphite are dispersed, cast iron where the ingredients of the white cast iron satisfy, by wt %, (% C)?4.3?(% Si)÷3 and C?1.7% and where the particles of spheroidal graphite are dispersed at a density of 50 particles/mm2 or more, or cast iron where the particles of flattened graphite have a width of 0.4 mm or less and a length of 50 mm or less.

Abstract: A method for casting medium carbon, B/Ti steel product using compact strip processing or thin slab casting. The method can include providing a steel composition including boron and titanium and casting the steel composition into a slab having a thickness between about 25 and 150 mm. The slab can have a cast composition including about 0.23 to 0.30 wt. % carbon, about 0.0010 to 0.0050 wt. % boron, about 0.010 to 0.050 wt. % titanium, about 1.15 to 1.50 wt. % manganese, less than 0.35 wt. % silicon and a Ti/N ratio greater than 2.9. The amount of each element is provided based upon the total weight of the steel composition. The steel slab can be free from cracks and significant defects. Furthermore, the steel slab can be used for electric resistance welded (ERW) products.

Abstract: Methods for reducing inclusion content of sputter targets and targets so produced are disclosed. Inclusions may be reduced by adding a small amount of Si to the molten Al or molten Al alloy followed by filtering of the molten metals through a filter medium. Targets having substantially no inclusions therein of greater than about 400 ?m are especially useful in the sputtering of large flat panel displays and result, upon sputtering, in a reduction in the amount of macroparticles sputtered onto the substrate.

Abstract: A method of casting an ingot of a metal having a susceptibility to hot-tearing while avoiding such hot tearing. The method involves co-casting a cladding metal on a surface of a metal core ingot as the ingot is being cast in a DC casting procedure. The cladding layer preferably contacts the core ingot at a position on the ingot surface where the metal of the ingot is incompletely solid, e.g. at a temperature between its solidus temperature and liquidus temperatures. The metal of the core ingot and the metal of the cladding layer are the same and, if they contain grain refiners, the are present in an amount of 0.005% by weight of the metal or less.

Abstract: A material composite has at least one region of copper or a copper alloy, at least one region of a predominantly graphitic material, and at least one boundary region between them. The boundary region has one or more carbides from the group of the IVb, Vb, VIb transition metals and one or more elements of the group consisting of Si, B, Al, Ge, Mn, Sn. In a preferred implementation of the invention, the composite is produced with a back-casting process.

Abstract: A manufacturing method for an isothermal evaporation casting process is disclosed and to design the manufacturing method for the simple atmospheric casting. The present invention can melt the Mg—Ni alloy with the aspect of totally different melting points thereof, and the other elements can be added during melting simultaneously. Through the Mg—Ni alloy with a suitable weight ratio, the eutectic alloy of Mg/Mg2Ni and high purified ?-phase Mg2Ni can be made. Then adding other elements are to produce the composition of Mg/Ni/M. By way of the manufacturing method of the present invention, the melting equipment is simplified; and, through different manufacturing steps, the purposes of time-saving and low cost are reached; further that, a large amount of the eutectic alloy of Mg/Mg2Ni with different kinds of ratios of Mg, high purified ?-phase Mg2Ni, or the composition of Mg/Ni/M can be obtained.

Abstract: The present invention provides a process for producing a porous body which comprises dispersing a gas-forming compound in a molten porous body-forming material, and then solidifying the molten material. With this process, the present invention enables manufacture of high quality and highly uniform porous bodies even under an atmospheric pressure, without requiring high pressure ambience.

Abstract: The present application relates to a porous composite material consisting of a metal matrix with embedded nano-structured materials.

Abstract: The invention relates to an improved vacuum die-casting, in particular for metals and metal alloys which contain Al, Mg, Zn, and Cu. In order to improve the quality of the components, it is proposed to produce vacuum in the mold cavity and the casting chamber cavity in several phases of the die-casting process. The use of the new method is contemplated for both cold-chamber and hot-chamber die-casting.

Abstract: The present invention provides a sputtering target for a phase change memory and a phase change memory film formed with such a target, and the manufacturing method thereof, characterized in that the sputtering target is composed from elements of not less than a three component system and has as its principal component one or more components selected from stibium, tellurium and selenium, and the compositional deviation in relation to the intended composition is ±1.0 at % or less.

Abstract: Disclosed is: (i) a metal injection-molding system, (ii) a metal injection-molding system including a combining chamber, (iii) a metal injection-molding system including a first injection mechanism and a second injection mechanism, (iv) a metal injection-molding system including a first injection mechanism being co-operable with a second injection mechanism, (v) a mold of a metal injection-molding system, and (vi) a method of a metal injection-molding system.

Abstract: The invention relates to a casting method for aluminium or aluminium alloys, in which molten aluminium is treated and fed to at least one casting station (33, 34), in which the molten metal is cast into semi-finished products or similar. A number of casting ladles (25) are used to treat and feed the molten aluminium to the respective casting station (33, 34). The ladles are filled with the molten metal and the latter is then transported to at least one additional stage (32), where it is treated. The molten metal is subsequently delivered in the ladles (25) to the casting station (33, 34), where the ladles (25) are emptied. The invention thus provides an efficient method that can be flexibly adapted to the time periods of the process, said periods altering according to the situation.

Abstract: The invention relates to a method for producing a cast component, particularly a gas turbine component, by casting. According to the invention, the method comprises at least the following steps: a) preparing a melting crucible; b) preparing a semifinished granular material from an intermetallic titanium/aluminum material; c) filling the melting crucible with the semifinished granular material, whereby the quantity of the semifinished granular material placed inside the melting crucible corresponds to the quantity necessary for casting the component; d) melting the semifinished granular material made of the intermetallic titanium/aluminum material inside the melting crucible; e) preparing a casting mold; f) pouring the melt into the casting mold; g) solidifying the melt inside the casting mold, and; h) removing the cast component from the casting mold.

Abstract: A manufacturing method for an isothermal evaporation casting process is disclosed and to design the manufacturing method for the simple atmospheric casting. The present invention can melt the Mg—Ni alloy with the aspect of totally different melting points thereof, and the other elements can be added during melting simultaneously. Through the Mg—Ni alloy with a suitable weight ratio, the eutectic alloy of Mg/Mg2Ni and high purified ?-phase Mg2Ni can be made. Then adding other elements are to produce the composition of Mg/Ni/M. By way of the manufacturing method of the present invention, the melting equipment is simplified; and, through different manufacturing steps, the purposes of time-saving and low cost are reached; further that, a large amount of the eutectic alloy of Mg/Mg2Ni with different kinds of ratios of Mg, high purified ?-phase Mg2Ni, or the composition of Mg/Ni/M can be obtained.

Abstract: Preferred embodiments of the present invention include methods that allow for casting alloys, and preferentially casting wrought alloys to circumvent problems such as, for example, hot tearing. Preferred embodiments of the present invention provide for alloys having predominantly spherical primary ?-aluminum grains in their microstructure (i.e., substantially free of dendrites) formed by mixing two liquids of differing compositions that are held at predetermined temperatures, such that when mixed they produce a predetermined alloy composition at a predetermined temperature that is inclined to solidify with a predominantly spherical grain structure that minimizes the alloy's tendency towards hot tearing.

Abstract: A process for producing a lightweight molded part, comprising introducing a gas into a particle-containing, molten metal to produce a metal foam having voids with a monomodal distribution of their dimensions, introducing the metal foam into a casting die and compressing it therein essentially under all-round pressure; and the molded part made by this process.

Abstract: A method for removing casting defects (5) from an article (1) with an oriented microstructure can include locating at least one casting defect (5) and melting the casting defect (5) locally by a heat source (7) to a depth at least as great as the casting defect (5) itself. The molten material can then be solidified epitaxially with respect to the surrounding oriented microstructure of the article (1) in a way that the resulting solidified area is substantially free of any defect.

Abstract: An aluminum alloy suitable for diecasting of components with high elongation in the cast state contains, as well as aluminum and unavoidable impurities, 8.0 to 11.5 w. % silicon, 0.3 to 0.8 w. % manganese, 0.08 to 0.4 w. % magnesium, max 0.4 w. % iron, max 0.1 w. % copper, max 0.1 w. % zinc, max 0.15 w. % titanium and 0.05 to 0.5 w. % molybdenum. Optionally, the alloy also contains 0.05 to 0.3 w. % zirconium, 30 to 300 ppm strontium or 5 to 30 ppm sodium and/or 1 to 30 ppm calcium for permanent refinement and for grain refinement gallium phosphide and/or indium phosphide in a quantity corresponding to 1 to 250 ppm phosphorus and/or titanium and boron added by way of an aluminum master alloy with 1 to 2 w. % Ti and 1 to 2 w. % B.

Abstract: An additive for increasing the toughness of thin-wall iron castings is provided. The additive includes amounts of a non-ferrous metal oxide and a metal sulfide in which the non-ferrous metal has an affinity for oxygen less than that of iron, and the metal has an affinity for sulfur less than that of magnesium. The metals contained in the oxides and sulfides are also not alkali, alkali earth or rare earth metals to reduce the incidence of defect formation in the castings. The metal oxide and metal sulfide, when added to a cast iron melt react with magnesium added to the melt as a spheroidizing graphite element to form nucleation sites having a core of magnesium oxide surrounded by magnesium sulfide. These nucleation sites allow for increased nucleation of graphite, whether in vermicular or spheroidal form, such that the cross-section of the thin-wall iron casting is more uniform, thereby decreasing the amount of carbide formed in the casting and increasing the toughness of the casting.

Abstract: The invention is relating to a system for casting metal, the system comprising a holding furnace (3) containing a base metal melt (2), at least one casting crucible (1) mounted inside the holding furnace (3) and situated at least partly in the base metal melt (2), the said casting crucible (1) divided to at least first volume (4) and second volume (5) with a separating wall (6), which separating wall (6) is forming a gap (10) with the casting crucible wall (11) said casting crucible (1) having at least one opening (12) in the wall (11) from the first volume (4) to the base metal melt (2) in holding furnace (3) and having means to import alloying material (7) to the first volume (4) and having at least one casting die (8) in the second volume (5) inserted into the alloyed metal melt (9). The invention also relates to a method of casting metal.

Abstract: An alloy of aluminum, lithium, magnesium, zirconium, and scandium is formed with a rapid solidification process to retain desired metastable phases. A solid freeform fabrication device uses a heat source to melt a feedstock delivered through one or more guide nozzles. The heat source and the nozzles are mounted to a movable platform that positions the heat source and the nozzles in a desired location for each section or layer of the part being formed. The nozzles are located at 90° increments in an array having a selected radius from, and being centered on the heat source. The device forms adjacent, side-by-side layers to form the width of the part, and is used to form adjacent, stacked layers to create the height of the part.

Abstract: A metal-matrix material in the form of a carbide powder together with a sodium fluoride flux is deposited as a charge within a crucible for induction heating thereof to a flux melting temperature to thereby initiate pretreatment. The molten flux is spread over and covers powder particles of the metal-matrix carbide throughout, in response to stirring by rotation of an agitator during said flux melt heating within the crucible. The charge may be covered within the crucible by an air-purging blanket of argon gas during said heating. The powder fluxed charge is then cooled within the crucible before removal therefrom and sealingly packaged within aluminum soda cans or foil wrappings for future use storage. Such packaged charges are transferred from storage and introduced into a casting mold for enhanced centrifugal cast molding of metallurgical products, such as a metallic ring having an outer carbide bronze surface.

Abstract: A method of producing a high nitrogen, ultra low carbon steel suitable to rolling material for use in cold rolled steel sheets having excellent age hardening property by an age hardening treatment after forming by working, with no defects in slabs or steel sheets, reliably, at a reduced cost and with a high productivity is proposed. The method for producing a rolling material for use in ultra low carbon steel sheets at: C≦0.0050 mass % comprises; applying primary decarburization refining to molten iron from a blast furnace, then controlling the composition in the molten steel after primary decarburization refining to a range satisfying the following relation: [mass % N]−0.15[mass % C]≧0.0060,  subsequently conducting secondary decarburization refining to a ultra low carbon concentration region while suppressing denitridation using a vacuum degassing facility, then conducting deoxidation by Al and, further, controlling the composition.

Abstract: A method for preventing oxidation of molten aluminum alloy and magnesium alloy surfaces, the method comprising providing a molten aluminum alloy or magnesium alloy having a molten aluminum or magnesium alloy surface; covering the molten aluminum or magnesium alloy surface with an initial layer of petroleum coke, the initial layer of petroleum coke having an initial layer thickness of about 0.75 inches; oxidizing a portion of the initial layer of petroleum coke to form a working layer of petroleum coke covering the molten metal surface, the working layer of coke having a working layer thickness of about 0.5 inches, and a layer of carbon dioxide immediately adjacent to and contiguous with the working layer of petroleum coke; and adding additional petroleum coke to the working layer of petroleum coke to maintain the working layer thickness at about 0.5 inches.

Abstract: A process for producing a thin die-cast molded article of an aluminum material having a portion having a thickness in the range of 0.4 to 1.2 mm using a mold having a gate having an opening of 0.2 mm or greater and the same as or smaller than the thickness of the portion of the molded article separated from a gate portion, members constituting the gate having been treated by nitrogenation at the surface. The thin die-cast molded article of an aluminum material can be produced efficiently with excellent flow of the melted metal of the aluminum material through the gate portion.

Abstract: The present invention comprises a method of making a golf club head by casting a molten titanium alloy and thereafter removing the alpha case that is formed on the surface of the titanium by means of a conformal milling process. The conformal milling process uniformly dissolves the alpha case without distorting the underlying metal. The reduction in wall thickness caused by the conformal milling results in a concomitant reduction in the weight of the part without any loss in the critical impact strength of the part. In fact, impact strength is increased. This weight can then be redistributed as a supplemental weight member, which can be used to lower the center of mass of the club. The weight member can further be positioned on the sole plate or club body in such a way so as to permit fine tuning of the location of the center of mass of the club, as well as shaped so as to increase the polar moment of inertia of the club head about the golf club shaft.

Abstract: A method of minimizing the size of primary Si in Al—Si alloy which includes a step of adding P to molten Al—Si alloy, a step of contacting a metal substrate plated with Zn or a copper substrate, and a step of removing the substrate from the molten Al—Si alloy.

Abstract: A master alloy for modification and grain refining of hypoeutectic and eutectic Al—Si based foundry alloys is described. In addition to unavoidable contaminants the alloy contains nucleating and modifying additions of Ti, B and Sr, wherein the content of Ti is between 0.5 and 2.0% by weight, the content of B is between 0.5 and 2.0% by weight and the content of Sr is between 3.0 and 12.0% by weight, with the ratio Ti/B between 0.8 and 1.4. A method for the preparation of said master alloy is also described.

Abstract: A gating system for adding an alloying material to a molten base metal in immediate connection with a casting process. The gating system has a runner (2) having an inlet (7) whose cross-sectional area is throttled, a reaction chamber (4) whose sectional area varies along the height of the reaction chamber (4) as a function of the teeming rate, and a pressure and mixing chamber (5) which is connected after the reaction chamber (4) and provided with a partition (9). This results in a constant alloying material content of the metal being obtained at a varying teeming rate during the casting process.

Abstract: A process for producing a thin die-cast molded article of an aluminum material having a portion having a thickness in the range of 0.4 to 1.2 mm using a mold having a gate having an opening of 0.2 mm or greater and the same as or smaller than the thickness of the portion of the molded article separated from a gate portion, members constituting the gate having been treated by nitrogenation at the surface. The thin die-cast molded article of an aluminum material can be produced efficiently with excellent flow of the melted metal of the aluminum material through the gate portion.

Abstract: A process is described for treating molten metal with a particulate treating agent. A melt of a metal, e.g. aluminum, is provided in a treatment vessel such as a ladle and a mixing impeller is positioned substantially below the surface of the molten metal. The impeller comprises a plate with a series of spaced blades extending from the surface of the plate. This impeller is adapted to provide high shear mixing with minimum vortex. While rotating the impeller on a substantially vertical axis, particulate treating agent is fed by way of an injection tube below the surface of the molten metal and into the region between the axis and periphery of the impeller. This causes a high shearing action in the region of the blades whereby the treating agent is quickly broken down into finely divided droplets that are at least partially molten and which are circulated within the molten metal.

Abstract: Aluminum alloy compositions are disclosed, which include small amounts of calcium that result in improved surface properties of the cast aluminum. The calcium, and up to 0.25% grain refiners, are added along with alkaline earth metals, transition metals and/or rare earth metals to the aluminum alloy as a melt. The addition results in improved appearance, substantially reduced surface imperfections and reduced surface oxidation in cast ingot aluminum and aluminum alloys. The addition of small amounts of these additives, surprisingly were found to substantially eliminate vertical folds, pits and ingot cracking in more than one ingot casting technique. The additions also improved the appearance of the ingots, including reflectance. As a result, the ingots could be reduced or worked essentially right out of the casting without first conditioning the surface by, for example, scalping.

Abstract: A method of grain refining aluminum, the method comprising providing a molten aluminum body containing at least one of the metals selected from the group consisting of titanium, zirconium, vanadium, molybdenum, manganese, silicon, tungsten, tantalum, niobium and beryllium. A material reactive with the titanium is introduced preferably in gaseous form to the aluminum body. The material has a component selected from the group consisting of boron, carbon, sulfur, nitrogen and phosphorus. The material and said metal form a grain refining compound adapted for grain refining the aluminum.

Abstract: A precipitation hardenable nickel base alloy that provides a novel combination of elevated temperature strength, ductility, and reduced notch sensitivity at temperatures up to about 1300° F. is described. The alloy contains, in weight percent, about Carbon 0.10 max. Manganese 0.35 max. Silicon 0.2-0.7 Phosphorus 0.03 max. Sulfur 0.015 max. Chromium 12-20 Molybdenum 4 max. Tungsten 6 max. Cobalt 5-12 Iron 14 max. Titanium 0.4-1.4 Aluminum 0.6-2.6 Niobium 3-7 Boron 0.003-0.015 the balance being nickel and usual impurities. An article made from the alloy and a method of making the alloy are also disclosed.

Abstract: A process for producing a thin die-cast molded article of an aluminum material having a portion having a thickness in the range of 0.4 to 1.2 mm using a mold having a gate having an opening of 0.2 mm or greater and the same as or smaller than the thickness of the portion of the molded article separated from a gate portion, members constituting the gate having been treated by nitrogenation at the surface. The thin die-cast molded article of an aluminum material can be produced efficiently with excellent flow of the melted metal of the aluminum material through the gate portion.