A digital broadcasting receiving system is provided. A receiving module receives an M number of symbols each carrying an N number of subcarriers of a control signal. A converting module performs FFT on respective kth subcarriers of an ith symbol and an (i+1)th symbol to generate an (i, k)th converted value and an (i+1, k)th converted value. A demodulating module performs differential demodulation on the (i, k)th and (i+1, k)th converted values to generate an (i, k)th demodulation value. A combining module soft-combines the (i, 1)th demodulation value through the (i, N)th demodulation value to generate an ith prediction value corresponding to the ith symbol. A determining module identifies a synchronization segment in the control signal according to the 1st prediction value to the (M−1)th prediction value.

Provided is a method for transmitting data in a communication or broadcasting system using a linear block code by generating a codeword by encoding input information data bits, interleaving the codeword; outputting modulation signal-constituting bits by bit-mapping the interleaved codeword using a bit-mapping table predetermined depending on a modulation scheme and a coding rate, outputting a modulation signal by modulating the modulation signal-constituting bits and transmitting the modulation signal via a transmit antenna.

A cylinder liner for insert casting which is excellent in heat conductivity with a cylinder block is provided, the cylinder liner for insert casting of the present invention comprising a cylinder liner for insert casting 2 which is formed with projections 5 with heights of 0.3 to 1.2 mm and undercut parts 6 in a ratio of 20 to 80/cm2 on an outer circumferential surface 4 over which, in turn, a thermally sprayed layer 7 is covered, wherein the thermally sprayed layer 7 is comprised of a ferrous material and wherein a ratio of a surface area of a thermally sprayed layer 7 surface at a certain region on the outer circumferential surface 4 of the liner with an area of the region is 12 to 23. The thermally sprayed layer preferably has a thickness of 0.01 to 0.2 mm. The thermally sprayed layer is preferably formed using a wire shaped thermal spraying material.

A method for casting a thrower for a railcar coupler includes creating a mold box that is vertically parted in halves, each half defining a side of a thrower cavity and that includes at least a portion of a sprue at a location above the thrower cavity, the thrower cavity also being oriented vertically; pouring molten metal into the mold box through the sprue and into the thrower cavity while the mold is oriented vertically; and shaking out the mold box to release the thrower after the thrower has cooled. Creating the mold box may be executed through a cold shell process. The halves of the mold box may include reflective images of the sides of two thrower cavities and an ingate connected between the sprue and one of the two thrower cavities.

Provided are a polycrystalline silicon ingot casting mold and a method for producing a polycrystalline silicon ingot casting mold, with which high-quality silicon ingots can be obtained at high yields by minimizing sticking with the surfaces of the silicon ingot casting mold, and losses and damages that occur when solidified silicon ingot is released from the mold. The method for producing a polycrystalline silicon ingot casting mold having a release layer, including: forming a slurry by mixing a silicon nitride powder with water, coating the surface of the mold with the slurry, and heating the mold at 400 to 800° C. in an atmosphere containing oxygen, after coating the slurry.

A polycrystalline silicon ingot casting mold, and method for producing same. Mold release material being obtained by blending a silicon nitride powder (A) having an average particle diameter along the short axis of 0.6 to 13 μm with a silicon nitride powder (B) having an average particle diameter along the short axis of 0.1 to 0.3 μm at a weight ratio of 5:5 to 9:1; coating the mold surface with the slurry; and a heating the mold at 800 to 1200° C. in an atmosphere containing oxygen.

Disclosed is a cast pin equipped with circular grooves which are provided at any location. The cast pin (10) is equipped with: an outer tube (11) in the shape of a hollow body the tip of which is closed; an inner tube (20) inserted into the outer tube (11); and a cooling medium pipe (30) that is inserted into the inner tube (20) and supplies a cooling medium to the interior of the inner tube (20). Three circular grooves (22) are formed at prescribed intervals in the longitudinal direction, for example, on the outer circumferential surface (21) of the inner tube (20). The circular grooves (22) are formed in the outer circumferential surface (21) by applying a cutting tool from the radial outward direction of the inner tube (20).

An arrangement for a continuous casting process. The arrangement includes a vessel having a first opening for receiving molten metal in the vessel, a second opening for discharging the molten metal from the vessel, and a body extending between the first opening and the second opening, a first magnetic arrangement attached to the body, the first magnetic arrangement having a magnetic core with legs, and coils arranged around the legs, and a power system configured to provide an alternating current superimposed on a carrier current to each of the coils, each pair of alternating current and carrier current provided to a coil forming a flow control current, wherein flow control currents provided to adjacent coils are phase shifted relative each other, thereby creating a travelling magnetic field in molten metal in the vessel. A corresponding method is also presented herein.

The invention relates to a method for the vertical semi-continuous direct chill casting of composite billets or plates comprising at least two layers of aluminum alloys, using a separator which is in contact with the solidification front and which provides a seal between the two alloys during casting, said separator being vibrated while it is in contact with the solidification front, so that the separator is not frozen in and entrained by the solid metal. The invention also relates to a device that can be used to carry out said method.

Arnold (13) includes a recessed portion (21) for receiving a melt (2). The recessed portion (21) is constituted by an inner wall surface (29) for converting the melt (2) into a solidified portion when the inner wall surface (29) contacts the melt (2), and opens in a withdrawal direction (D1) of the solidified portion. A curved line formed by a first contour (23p) and a second contour (25p) has a cusp at a position of start points (43 and 45). The distance between the first contour (23p) and the second contour (25p) in a width direction (D2) increases continuously from an upstream side to a downstream side of the withdrawal direction (D1). The shape of the inner wall surface (29) of the recessed portion (21) is determined so that a cast rod (3) can be rotationally displaced clockwise or counterclockwise about an axis passing through a first end point (33) or a second end point (35) and perpendicular to a section of the mold 13.

Various embodiments provide systems and methods for casting amorphous alloys. Exemplary casting system may include an insertable and rotatable vessel configured in a non-movable induction heating structure for melting amorphous alloys to form molten materials in the vessel. While the molten materials remain heated, the vessel may be rotated to pour the molten materials into a casting device for casting them into articles.

A multi-wall ceramic core for casting an airfoil with one or more internal cooling passages is made by preforming at least one fugitive core insert to have a joint-forming surface with a male and/or female joint feature and then forming at least one fugitive core insert in-situ adjacent and integrally connected and fused to the at least one preformed core insert at the joint-forming surface to form an interlocked, fused joint to form a composite core insert that includes features to form internal passage surfaces in the core when the composite core insert is removed. Another aspect involves preforming first and second fugitive core inserts to have respective joint-forming surfaces with respective snap-fittable joint features and assembling the first and second fugitive core inserts to form a composite core insert by snap fitting the snap-fittable joint features together to form an interlocked joint. The composite core insert is placed in a core molding die cavity, and a fluid ceramic material is introduced into the die cavity to form the ceramic core body incorporating the fugitive composite core insert therein.

An apparatus for press casting includes a casting mold formed of a fixed mold and a first moving mold operable to move relative to the fixed mold. The apparatus further includes a second moving mold operable to move relative to the first moving mold. A mold cavity, which forms a cast product, is configured by the fixed mold and the second moving mold. When the first moving mold is moved to a first predetermined position, a molten metal passage and a gas exhaust port, which communicate with the mold cavity, are formed at positions outside the mold cavity. A communication between the mold cavity and the molten metal passage, and the gas exhaust port is cut off by the second moving mold when the second moving mold is moved to a second predetermined position while the first moving mold is maintained at the first predetermined position thereof.

Provided herein are various embodiments of systems for casting thin metal plates and sheets. Typical embodiments include layers of mold cavities that are oriented vertically for casting the metal plates. In some embodiments, the mold cavities include a beveled edge such that the plates that are cast have a beveled edge. In some embodiments, the mold cavities are filled with a molten metal through an open horizontal edge of the cavity. In some embodiments, the mold cavities are filled through one or more vertical feed orifices. Further disclosed are methods for forming a thin cast metal plate or sheet where the thickness of the cast part is in a range from 0.005 inches to 0.2 inches, and the surface area of the cast part is in a range from 16 square inches to 144 square inches.

The embodiments described herein relate to methods and apparatus for counter-gravity formation of BMG-containing hollow parts. In one embodiment, the BMG-containing hollow parts may be formed by first feeding a molten metal alloy in a counter-gravity direction into a mold cavity to deposit the molten metal alloy on a surface of the mold cavity and then solidifying the deposited molten metal alloy.

A new method for continuous casting of molten metal is provided that allows one to obtain an intermediate product such as slab, billet wire, etc. before subsequent thermomechanical treatment (e.g. lamination or annealing), such that its chemical composition is modified by the addition of elements in order to give it greater mechanical strength.

Disclosed is a vessel for melting and casting meltable materials. The vessel may be a surface temperature regulated vessel for providing a substantially non-wetting interface with the molten materials. In one embodiment, the vessel may include one or more temperature regulating channels configured to flow a fluid therein for regulating a surface temperature of the vessel such that molten materials are substantially non-wetting at the interface with the vessel. Disclosed also includes systems and methods for melting and casting meltable materials using the vessel.

A method of casting a semi-liquid or semi-solid iron-based alloy, the method including: applying, to a part or to the whole of an uppermost surface of an inner surface of a die, a lubricating die-release agent in which particles including at least one selected from molybdenum disulfide, graphite, tungsten disulfide, boron nitride, chrome oxide and boric oxide are dispersed in a solvent; and thereafter casting by using the die.

A casting core resulting from alkaline earth metal oxide particles having an average particle size of 0.8-4 mm being dispersed in a water-soluble alkali metal salt matrix. The casting core can be efficiently produced using a method of dispersing alkaline earth metal hydroxide particles having favorable disintegration properties and a particle size in the range of 1-5 mm in a molten water-soluble alkali metal salt, converting to alkaline earth metal oxide particles by means of dehydration, and casting in a mold, cooling, and hardening.

A method of pulsed-air compacting of mold-sand in combination with compacting by compression supplements the pulsed-air compacting of the mold-sand by an operation of re-compacting the mold-sand by pressing which is performed with the pattern plate containing the patterns by the plate moving inside the cavity of the filling frame in the direction of the latticed pressing element which is subjected to a counter-pressure force corresponding in its value to the prescribed level of the half mold compaction. The method is realized with a device in which the pattern plate containing the patterns is mounted with the possibility of a reciprocal motion inside the cavity of the filling frame, and the pressing cylinder is mounted with the possibility to apply a force against the movable pattern plate.

A casting apparatus having a main chamber connected to at least one casting tower. The main chamber may contain molten metal and the temperature within the main chamber may be maintained by a furnace. A pump may pump the molten metal up the tower and into an upper pool chamber. A feeder nozzle may feed the molten metal from the upper pool chamber and onto a chilling wheel, which may turn the molten metal into metal flakes.

Provided in one embodiment is a method of forming a connection mechanism in or on a bulk-solidifying amorphous alloy by casting in or on, or forming with the bulk-solidifying amorphous alloy, a machinable metal. The connection mechanism can be formed by machining the machinable metal.

An aluminium-copper alloy comprising substantially insoluble particles which occupy the interdendritic regions of the alloy, provided with free titanium in quantity sufficient to result in a refinement of the grain structure in the cast alloy.

Apparatuses and methods of forming battery parts are disclosed herein. In one embodiment, a method of forming a battery part includes receiving a flowable material into a cavity, and reducing a volume of the cavity while a pin extending through at least a portion of the cavity remains at least generally stationary therein. The method further includes sealing the cavity by slidably engaging at least a portion of the pin with a recess in the piston proximate the end face of the piston.

Aluminum alloys are provided that have improved fluidity and elongation, as well as freedom of die soldering. The aluminum alloys are particularly suitable for die-casting of structural components. The aluminum alloy includes silicon at from about 8 weight % to about 11 weight %, manganese at from about 0.8 weight % to about 1.9 weight %, iron at from about 0.1 weight % to about 0.5 weight %, magnesium at from about 0.2 weight % to about 0.7 weight %, boron at from about 0.002 weight % to about 0.15 weight %, strontium at from about 0.006 weight % to about 0.017 weight %, less than about 0.25 weight % copper, less than about 0.35 weight % zinc, less than about 0.25 weight % titanium, and a balance of aluminum. Methods related to the aluminum alloys are also provided.

A die casting method and apparatus are provided, thereby making it possible to produce a thin diecast product that has hitherto been considered impossible to realize, and a diecast product is also provided. A semi-solidified metallic material is formed having particles in solid phase of a particle size less than 30 μm, and is thereupon injected into a die. A die casting machine has a sleeve into which a melt of metallic material is poured, and the semi-solidifying material there when it has a certain proportion of solid phase reached is injected into the die with a plunger to which pressure is applied. The melt of metallic material is poured into the sleeve so that the material occupies inside the sleeve at a proportion in vertical cross-sectional area of 30% or less. The particle size in this semi-solid material is held unvaried in a product as diecast.

A method of forming a cast product (30) by providing a core (52) having a plurality of sections (54) and one or more gaps (55) there-between. The core further includes an insert member (60) spanning the gap (55) between adjacent sections (54). The core (52) is located within a mold (68) and a liquid phase material is introduced into gap (55) between the core sections. The liquid phase material is solidified in the gap so as to form a cast feature of a resulting solid product and the core sections (54) are removed from the solid product (30) such that the insert member (60) remains securely held within the feature (74).

A foundry mixture for making molds used for molding cast metal parts includes foundry sand, a non-aqueous binder, and a cleaning agent that includes calcium oxide. Residual foundry mixture remaining on the cast part after removal from the mold is removed by electrolytic cleaning of the cast part.

Various embodiments provide systems and methods for casting amorphous alloys. Exemplary casting system may include an insertable and rotatable vessel configured in a non-movable induction heating structure for melting amorphous alloys to form molten materials in the vessel. While the molten materials remain heated, the vessel may be rotated to pour the molten materials into a casting device for casting them into articles.

Casting jigs, methods, and kits that may be used in manufacture of anatomical healing caps. A casting jig may include a body having one or more wells within the body, each well being open at a proximal end thereof and having a negative shape corresponding to an anatomical healing cuff body of a given tooth position. Each respective anatomical healing cuff body negative shape includes an asymmetrical cross-section and an irregular surface so that an anatomical healing cuff body having said shape is configured to provide substantially custom filling of at least an emergence portion of a void where a natural tooth once emerged or should have emerged from the void (e.g., in the case of a congenitally missing tooth). The casting jig may further include a socket at a distal end of each well that is configured to receive therein a dental implant or dental implant analog.

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