Abstract: Methods and systems are provided for continuously producing cast metal components. An exemplary method includes feeding molten metal into a first mold at a fill station; maintaining a pressurized chamber at an elevated pressure; moving the first mold into the pressurized chamber, wherein the molten metal solidifies in the first mold under the elevated pressure; and removing the first mold from the pressurized chamber.

Abstract: An object of the present invention is to provide a cylinder liner for insert casting that can improve the joining strength between a cylinder liner and a cylinder block by reducing voids generated between the cylinder liner and the cylinder block. The above-described problem can be solved when the molten metal running index YI defined by the following Formula (1) is from 2.2 to 14.5. Molten metal running index YI=[area ratio St (%) of top portions of protrusions×molten metal infiltration volume V (mm3)/surface area A (mm2) of cylinder liner base]/average surface-to-surface distance Pav between top portions of protrusions (mm)??(1).

Abstract: The present invention relates to an apparatus and method for purifying materials using a rapid directional solidification. Devices and methods shown provide control over a temperature gradient and cooling rate during directional solidification, which results in a material of higher purity. The apparatus and methods of the present invention can be used to make silicon material for use in solar applications such as solar cells.

Abstract: A process in direct chill casting wherein molten metal is introduced into a casting mold and cooled by impingement of a liquid coolant on solidifying metal in a casting pit including a movable platen and an occurrence of a bleed-out or run-out is detected the process including exhausting generated gas from the casting pit; and introducing an inert gas into the casting pit, the inert gas having a density less than a density of air; reducing any flow of the liquid coolant.

Abstract: Exemplary embodiments described herein related to methods and systems for casting metal alloys into articles such as BMG articles. In one embodiment, processes involved for storing, pre-treating, alloying, melting, injecting, molding, etc. can be combined as desired and conducted in different chambers. During these processes, each chamber can be independently, separately controlled to have desired chamber environment, e.g., under vacuum, in an inert gas environment, or open to the surrounding environment. Due to the flexible, independent control of each chamber, the casting cycle time can be reduced and the production throughput can be increased. Contaminations of the molten materials and thus the final products are reduced or eliminated.

Abstract: Embodiments of the present invention provide methods for manufacturing an even-wall rotor or stator that do not suffer from drawbacks of the prior art. Even-wall rotors or stators produced according to those methods are also provided. In one embodiment, a method for manufacturing a rotor or stator for use in a mud motor is provided. The method includes providing a vacuum chamber; providing a metal electrode at least partially disposed in the vacuum chamber; providing a mold disposed in the vacuum chamber; and melting a portion of the electrode with a direct current arc, the molten metal flowing into the mold ring.

Abstract: A die casting apparatus (100) for amorphous alloy comprises a stationary die (1) and a movable die (2); a sealed cabin (4) difining a sealing chamber (40); a protecting gas supplying device connected with the sealed cabin (4) for supplying the protecting gas into the sealing chamber (40); a melting device (5) for receiving and melting amorphous alloy; a feed sleeve (6) having a molten material inlet (60), with a plunger (7) positioned therein for injecting the molted amorphous alloy from the melting device (5) into a die chamber via the molten material inlet (60); a driving device (8) connected with the plunger (7) for driving the plunger (7) in the feed sleeve (6); and a gas purifying device (10) communicated with the sealed cabin (4) for purifying the gas from the sealed cabin (4).

Abstract: A method of forming an iron based glass forming alloy. The method may include providing a feedstock of an iron based glass forming alloy, melting the feedstock, casting the feedstock into an elongated body in an environment comprising 50% or more of a gas selected from carbon dioxide, carbon monoxide or mixtures thereof.

Abstract: A system (1) for injecting semisolid metal (3) into a mould (2), comprises —a mould (2) which comprises a mould chamber (16) suitable to receive the metal through a mould injection mouth (17); —at least one press device (4) for pressure-injecting metal (3) in said mould (2); —said at least one press device comprises a cylinder (5) having a substantially vertical axis (X-X) and a mouth (15) for coupling to the injection mouth (17) of said mould (2) and a thrust piston (6) accommodated within said cylinder, defining with said cylinder an injection chamber (7) suitable to contain molten metal (10); —said cylinder (5) having passageways (8) to receive cooling fluid (9) for cooling said molten metal (10) poured into said injection chamber (7) in semisolid metal (3); —a cup (18) for drawing the molten metal (10) and pouring the latter into said injection chamber (7); —a positioning device (11); —said positioning device (11) supporting a blending device (12), said blending device (12) having an active portion (14) a

Abstract: An alloy for R-T-B-based rare earth sintered magnets which contains R which is a rare earth element; T which is a transition metal essentially containing Fe; a metallic element M containing one or more metals selected from Al, Ga and Cu; B and inevitable impurities, in which R accounts for 13 at % to 15 at %, B accounts for 4.5 at % to 6.2 at %, M accounts for 0.1 at % to 2.4 at %, T accounts for balance, a proportion of Dy in all rare earth elements is in a range of 0 at % to 65 at %, and the following Formula 1 is satisfied, 0.0049Dy+0.34?B/TRE?0.0049Dy+0.36??Formula 1 wherein Dy represents a concentration (at %) of a Dy element, B represents a concentration (at %) of a boron element, and TRE represents a concentration (at %) of all the rare earth elements.

Abstract: A Zr-based amorphous alloy is provided; the formula of the Zr-based amorphous alloy is (Zr,Hf,Nb)aCubTicAldRee, where a, b, c, d, and e are corresponding atomic percent content of elements in the Zr-based amorphous alloy, 40?a?65, 20?b?50, 0.1?c?10, 5?d?15, 0.05?e?5, a+b+c+d+e?100, Re is one or a combination of plural ones selected from a group of elements La, Ce, Po, Ho, Er, Nd, Gd, Dy, Sc, Eu, Tm, Tb, Pr, Sm, Yb, and Lu, or Re is combined of Y and one or a combination of plural ones selected from a group of elements La, Ce, Po, Ho, Er, Nd, Gd, Dy, Sc, Eu, Tm, Tb, Pr, Sm, Yb, and Lu.

Abstract: Exemplary embodiments described herein relate to methods and systems for casting metal alloys into articles such as BMG articles. In one embodiment, processes involved for storing, pre-treating, alloying, melting, injecting, molding, etc. can be combined as desired and conducted in different chambers. During these processes, each chamber can be independently, separately controlled to have desired chamber environment, e.g., under vacuum, in an inert gas environment, or open to the surrounding environment. Due to the flexible, independent control of each chamber, the casting cycle time can be reduced and the production throughput can be increased. Contaminations of the molten materials and thus the final products are reduced or eliminated.

Abstract: There is provided chips for injection molding wherein the surfaces of chips made of an aluminum-containing magnesium alloy are coated with carbon powder. A molded article produced by injection molding of such chips for injection molding had excellent bending properties and tensile strength, which vary in a small range. Furthermore, a scrap formed during injection-molding of the chips for injection molding has improved recyclability.

Abstract: Described herein is a method of selectively depositing molten bulk metallic glass (BMG). In one embodiment, a continuous stream or discrete droplets of molten BMG is deposited to selected positions. The deposition can be repeated as needed layer by layer. One or more layers of non-BMG can be used as needed.

Abstract: A process and tools for forming and/or releasing metal preforms, metal shapes and solder balls is described incorporating flexible molds or sheets, injection molded metal such as solder and in the case of solder balls, a liquid or gaseous environment to reduce or remove metal oxides prior to or during metal (solder) reflow to increase surface tension to form spherical or substantially spherical solder-balls.

Abstract: In a process for the preparation of inorganic sample disks for analysis, the sample, in powdered form, is mixed with a powdered reagent flux which has been pre-melted. In an inert gas atmosphere, the mixture is placed in a graphite crucible and heated to a temperature slightly above 1000° C. After the flux dissolves the sample, a homogenous mix is produced. This mix is then poured into a graphite mold, the bottom of which contains a molten pool of an inert metal, such as gold, which acts as a smooth receiving surface. Upon cooling, the material in the mold solidifies, resulting in a glassy disk that can be analyzed. Cooling can be accelerated by making use of a cooling fluid that has a substantially higher thermal capacity than air.

Abstract: A hard metal material and a method of manufacturing a component of the hard metal material are disclosed. The hard metal material comprises 5-50 volume % particles of a refractory material dispersed in a host metal. The method comprises forming a slurry of 5-50 volume % particles of the refractory material dispersed in a liquid host metal in an inert atmosphere and pouring the slurry into a mould and forming a casting of the component.

Abstract: A stainless steel-and-amorphous alloy composite includes a stainless steel part and an amorphous alloy part. The stainless steel part has nano-pores defined in a surface thereof. The amorphous alloy part is integrally bonded to the surface having the nano-pores. A method for manufacturing the composite is also described.

Abstract: A method of forming a casting using a casting apparatus is disclosed, the method including the steps of lowering a ladle having a hollow interior into a source of molten material and an aperture facilitating flow into the hollow interior, filling the interior of the ladle with the molten material through the aperture, introducing an inert gas into a portion of a nozzle, removing the ladle from the source of molten material, causing the nozzle to contact a casting mold, and pressurizing the hollow interior with an inert gas to cause the molten material to flow into the casting mold.

Abstract: A casting apparatus and a method of forming a casting using the casting apparatus is disclosed, the casting apparatus comprising a ladle having a hollow interior adapted to receive a molten material therein; a nozzle in fluid communication with the hollow interior, the nozzle having a first portion disposed outside of the ladle and a second portion disposed within the hollow interio; an additive feeder in fluid communication with the hollow interior of the ladle; and a gas conduit in fluid communication with the hollow interior of the ladle.

Abstract: A casting process for an aluminum alloy containing at least about 0.1% of Mg and/or at least about 0.1% of Li in which a liquid surface of the alloy is put into contact with a dried gas including at least about 2% of oxygen by volume and with a water partial pressure lower than about 150 Pa throughout most of the solidification process is described. The process makes it possible to cast most oxidable aluminum alloys, in particular aluminum alloys containing magnesium and/or lithium, without using additives such as beryllium and/or calcium and without using expensive devices and/or gases, to obtain cast ingots generally free from surface defects and pollution, in complete safety.

Abstract: A low-pressure casting apparatus that prevents molten metal that is a residue in a conduit from being oxidized. The low-pressure casting apparatus includes a compartment for holding a molten metal 1, a pressure chamber 2 that can communicate with the compartment, wherein the molten meal is pressurized in the chamber, an on-off valve 5 that opens and closes hole 4 through which the compartment can communicate with the pressure chamber, a conduit 7 that conducts the molten metal to the mold 6, wherein the base of the conduit is connected to a lower part of the chamber so as to communicate with the chamber, the end of the conduit being made so that it can communicate with a sprue for a mold 6, a float 9 that goes up and down in the pressure chamber, and a tank that stores an inert gas and that has a pipe 13 that is connected to the upper part of the pressure chamber 2.

Abstract: The zirconium content of the alloy composition of a copper alloy foil of the present invention is 3.0 to 7.0 atomic percent, and the copper alloy foil includes copper matrix phases and composite phases composed of copper-zirconium compound phases and copper phases. As shown in FIG. 1, the copper matrix phases and the composite phases form a matrix phase-composite phase layered structure and are arranged alternately parallel to a rolling direction as viewed in a cross-section perpendicular to the width direction. In addition, the copper-zirconium compound phases and the copper phases in the composite phases form a composite phase inner layered structure and are arranged alternately parallel to the rolling direction at a phase pitch of 50 nm or less as viewed in the above cross-section. This double layered structure presumably makes the copper alloy foil densely layered to provide a strengthening mechanism similar to multilayer reinforced composite materials.

Abstract: The zirconium content of the alloy composition of a copper alloy wire is 3.0 to 7.0 atomic percent; and the copper alloy wire includes copper matrix phases and composite phases composed of copper-zirconium compound phases and copper phases. The copper matrix phases and the composite phases form a matrix phase-composite phase fibrous structure and are arranged alternately parallel to an axial direction as viewed in a cross-section parallel to the axial direction and including a central axis. The copper-zirconium compound phases and the copper phases in the composite phases also form a composite phase inner fibrous structure and are arranged alternately parallel to the axial direction at a phase pitch of 50 nm or less as viewed in the above cross-section. This double fibrous structure presumably makes the copper alloy wire densely fibrous to provide a strengthening mechanism similar to the rule of mixture for fiber-reinforced composite materials.

Abstract: A device for low-pressure casting wherein the stalk or the guiding tube is filled with inert gas by causing the space formed over the molten metal in the pressurizing room to communicate with the stalk or the guiding tube.

Abstract: The present invention relates to a white gold alloy free of nickel and copper having a hardness that is suitable in particular for watchmakers and jewellers. Said alloy consists of (in wt %): more than 75% of Au; more than 18% to less than 24% of Pd; more than 1% to less than 6% of at least one element selected from among Mn, Hf, Nb, Pt, Ta, V, Zn and Zr; optionally, no more than 0.5% of at least one element selected from among Si, Ga and Ti; and optionally, no more than 0.2% of at least one element selected from among Ru, Ir and Re. The invention also relates to a method for preparing said alloy.

Abstract: Alloys and methods for preparing the same are provided. The alloys are represented by the general formula of ZraAlbCucNid)100-e-fYeMf, wherein a, b, c, and d are atomic fractions, in which: 0.472?a?0.568; 0.09?b?0.11; 0.27?c?0.33; 0.072?d?0.088; the sum of a, b, c, and d equals 1; e and f are atomic numbers of elements Y and M respectively, in which 0?e?5 and 0.01?f?5; and M is selected from the group consisting of Nb, Ta, Sc, and combinations thereof.

Abstract: A Zr-based amorphous alloy and a method of preparing the same are provided. The Zr-based amorphous alloy is represented by the general formula of (ZraM1-a)100-xOx, in which a is an atomic fraction of Zr, and x is an atomic percent of 0, in which: 0.3?a?0.9, and 0.02?x?0.6; and M represents at least three elements selected from the group consisting of transition metals other than Zr, Group IIA metals, and Group IIIA metals.

Abstract: Alloys and methods of preparing the same are provided. The alloys are represented by the general formula of (ZraMbNc)100-xQx, in which M is at least one transition metal except Zr; N is Be or Al; Q is selected from the group consisting of CaO, MgO, Y2O3, Nd2O3, and combinations thereof; a, b, and c are atomic percents of corresponding elements; and 45?a?75, 20?b?40, 1?c?25, a+b+c=100, and 1?x?15. A method of recycling a Zr-based amorphous alloy waste is also provided.

Abstract: Method such as can be used, for example, for producing molded articles from metallic glasses. Method and apparatus are provided in which a good mold filling during casting is achieved in addition to high cooling rates. The method includes introducing a metal-containing melt into an electrically conducting casting mold, the metal-containing melt and the mold being connected in an electrically conducting manner to the outputs of the same voltage source during the introduction into a casting mold, so that a preset current flows through the boundary interface between the melt and the mold. Apparatus is also provided in which there is an electrically conducting connection to a voltage source between a metal-containing melt and an electrically conducting mold for the melt.

Abstract: A sheathed, annular metal fuel system is described. A metal fuel pin system is described that includes an annular metal nuclear fuel alloy. A sheath may surround the metal nuclear fuel alloy, and a cladding may surround the sheath. A gas plenum may also be present. Mold arrangements and methods of fabrication of the sheathed, annular metal fuel are also described.

Abstract: A method of forming an iron based glass forming alloy. The method may include providing a feedstock of an iron based glass forming alloy, melting the feedstock, casting the feedstock into an elongated body in an environment comprising 50% or more of a gas selected from carbon dioxide, carbon monoxide or mixtures thereof.

Abstract: A control method for supplying an inert gas from an inert gas source to a storage container for a molten metal through a gas feed path provided with a flow sensor for monitoring the gas flow rate and a solenoid valve for opening and closing the gas feed path for use with metal molding. The control method includes steps of turning off the solenoid valve if a temperature of the storage container is lower than a preset temperature, and turning off the flow sensor; otherwise turning on the solenoid valve and turning on the flow sensor; and stopping the output of the heater of the storage container when the gas flow rate is lower than the preset amount; these steps are controlled in accordance with a command signal from a controller.

Abstract: Alloys and methods for preparing the same are provided. The alloys are represented by the general formula of ZraAlbCucNid)100-e-fYeMf, wherein a, b, c, and d are atomic fractions, in which: 0.472?a?0.568; 0.09?b?0.11; 0.27?c?0.33; 0.072?d?0.088; the sum of a, b, c, and d equals 1; e and f are atomic numbers of elements Y and M respectively, in which 0?e?5 and 0.01?f?5; and M is selected from the group consisting of Nb, Ta, Sc, and combinations thereof.

Abstract: The invention relates to a magnetic strip, the strip having a magnetically easy direction axially parallel to a transverse axis of the strip. The strip is cut to length from a band of a magnetically semi-hard, crystalline alloy along a transverse axis of the band essentially corresponding to a width (b) of the strip. The band has a magnetically easy direction axially parallel to a longitudinal axis of the band.

Abstract: Disclosed is a metal casting system, an engineered mold for use therewith, a process for utilizing the system and mold, and articles having a clean, oxide-free sand casting of molten metals that have been produced under an inert environment. This is especially advantageous for making automotive and airplane parts from the manufacture of lightweight metals, and more especially for the production of magnesium parts in order to reduce weight while maintaining properties found in other lightweight metals. Currently, sand cast articles are being used for automotive, aerospace and semiconductor parts and other industrial applications.

Abstract: The present invention provides a method for manufacturing a biocompatible precious metal alloy object. According to a first aspect melting of alloying elements and casting of the biocompatible precious metal alloy are carried out in a process chamber (11) being provided with a process gas of predetermined composition. A burning flame (19) of a hydrocarbon-containing gas provides low oxygen and water content. According to a second aspect post-processing of a precious metal alloy is made in atmosphere provided by the process gas to form the biocompatible precious metal alloy object. The biocompatible precious metal alloy object manufactured according to the invention has a low probability of causing sensitisation when in contact with the human body.

Abstract: The invention relates to methods of making articles of semiconducting material on a mold comprising semiconducting material and semiconducting material articles formed thereby, such as articles of semiconducting material that may be useful in making photovoltaic cells.

Abstract: Embodiments of the present invention include a method for producing a component that includes melting a super-alloy or stainless steel alloy and transferring the melted alloy to a mold. The mold is mechanically vibrated while the melted alloy solidifies. The component then is removed from the mold.

Abstract: The present invention is directed, in general, to an apparatus for recycling magnesium alloy scrap. In particular, an apparatus for recycling magnesium alloy scrap includes a melting furnace formed with a tapping part, having a first filter for removing impurities present in molten scrap, and capable of being tilted toward the tapping part; a first cleaning furnace disposed on a side of the melting furnace, having a gas injecting part for injecting an inert gas in the molten metal and capturing and removing impurities present in the molten metal, and capable of being tilted; a second cleaning furnace disposed on a side of the first cleaning furnace, and having a pump to tap a predetermined amount of the molten metal supplied from the first cleaning furnace and a second filter to remove impurities in pumped molten metal; and an ingot forming furnace disposed on a side of the second cleaning furnace, and configured to form an ingot using the predetermined molten metal supplied from the second cleaning furnace.

Abstract: The invention relates to methods of making articles of semiconducting material and semiconducting material articles formed thereby, such as semiconducting material that may be useful in making photovoltaic cells.

Abstract: The invention relates to a casting process for an aluminum alloy containing at least about 0.1% of Mg and/or at least about 0.1% of Li in which a liquid surface of said alloy is put into contact with a dried gas including at least about 2% of oxygen by volume and with a water partial pressure lower than about 150 Pa throughout most of the solidification process. The invention makes it possible to cast the most oxidable aluminum alloys, in particular aluminum alloys containing magnesium and/or lithium, without using additives such as beryllium and/or calcium and without using expensive devices and/or gases, to obtain cast ingots free from surface defects and pollution, in complete safety.

Abstract: The invention concerns a production of precision castings by centrifugal casting, comprising the following steps: a) providing a centrifugal casting device having a rotor (1) being rotatable around an axis (A), and at least one crucible (8) being accommodated in the rotor (1) and at least one mold (4) being associated with said crucible (8) and being accommodated in a first radial distance (r1) from the axis (A), b) creating a metal melt (15) within the crucible (8), c) rotating the rotor (1) and thereby forcing the melt (15) by means of centrifugal forces from the crucible (8) into the mold (4), d) exerting a pressure on the melt (15) being forced into the mold (4) until the temperature of the solidifying melt (15) has reached a predetermined cooling-temperature in a range of 1300° to 800° C., wherein the pressure corresponds to the centrifugal force acting on the melt (15) at the moment when the mold (4) is completely filled times a factor of 1.0 to 5.

Abstract: During the casting of the metal article, a mold is lowered from a furnace assembly into a body of an inert gas. A stream having a thermal conductivity greater than the thermal conductivity of the inert gas is directed against a first portion of the mold to initiate solidification of molten metal in the first portion of the mold. The stream is subsequently directed against portions of the mold disposed in the body of inert gas and disposed above the first portion of the mold to initiate solidification of molten metal and portions of the mold above the first portion of the mold. The stream may be formed of a molten metal. Alternatively, the stream may be formed of an inert gas in which particulate is entrained.

Abstract: Embodiments of this apparatus and method introduce solutes into a sheet formed from a melt. A melt of a material is cooled and a sheet of the material is formed in the melt. A first fluid is introduced around the sheet at least partially while the sheet is formed. A second fluid also may be introduced. In one instance, use of the first fluid and second fluid may form a sheet that has two different solute concentrations.

Abstract: A method and apparatus involve positioning an insert within a cavity of a mold, heating an insert wall within the cavity of the mold, and casting a molten metal into the cavity adjacent the insert. A surface of the insert absorbs heat from the molten metal to melt and fuse to the molten metal.

Abstract: The invention concerns a method for production of a turbine blades by centrifugal casting, the turbine blade having a leading edge portion with a first thickness and a flowing-off edge portion with a second thickness being smaller than the first thickness, comprising the following steps: a) providing a centrifugal casting device having a rotor (1) being rotatable around an axis (A), and at least one crucible (8) being accommodated in the rotor (1), the crucible having at least one outlet opening, b) providing a mold (4) having an extended cavity (20) for forming the turbine blade, c) arranging the mold (4) at a radially outward position with respect to the crucible (8), so that an inlet opening (5) of the mold (4) is arranged vis-a-vis with an outlet opening (9) of the crucible (8), and further arranging the mold (4) so that a mold leading edge (21) is directed in a direction against the rotational direction of the rotor (1), d) rotating the rotor (1) and thereby forcing a metal melt (15) by means of centrif

Abstract: A plurality of molds are disposed on a rotatable base. The base is rotated to move each of the molds in turn through a pouring station to an article removing station and back to the pouring station. A molten nickel chrome super alloy is poured into each of the molds in turn at the pouring station. The molds are cooled by a flow of cooling fluid. The nickel chrome super alloy articles are removed from the molds at the article removal station. The base may be continuously or intermittently rotated relative to the pouring station. Molten metal may be continuously or intermittently poured at the pouring station.

Abstract: To provide a method for producing an aluminum ingot whose oxides is reduced by preventing the surface of molten aluminum from being oxidized. The method according to the present invention includes a melting step (melting furnace 1) of melting an aluminum base metal into a molten aluminum or molten aluminum alloy; a holding step (holding furnace 2) of holding the resulting molten aluminum or molten aluminum alloy; a dehydrogenation step (dehydrogenation unit 3) of removing hydrogen gas from the molten aluminum or molten aluminum alloy; a filtration step (filter 4) of removing inclusions from the molten aluminum or molten aluminum alloy; and a casting step (casting device 5) of solidifying the molten aluminum or molten aluminum alloy into a predetermined shape, wherein at least one of the above steps is conducted in the atmosphere of a protective gas containing fluorinating gas, carbon dioxide gas, and nitrogen and/or argon gas.

Abstract: A control method for supplying an inert gas from an inert gas source to a storage container for a molten metal through a gas feed path provided with a flow sensor for monitoring the gas flow rate and a solenoid valve for opening and closing the gas feed path for use with metal molding. The control method comprises; turning off the solenoid valve at a temperature of the storage container is equal to or lower than a preset temperature, and turning off the flow sensor; turning on the solenoid valve at the temperature of the storage container has reached the preset temperature, and turning on the flow sensor; and stopping the output of the heater of the storage container when a flow rate of the inert gas is equal to or lower than the preset amount; these steps are controlled in accordance with a command signal from a controller.