Abstract: A method and apparatus for providing an estimate of uniformity of wall thickness of a centrifugally cast object, such as a pipe cast from molten iron, substantially immediately after the casting process is complete. The volume of molten metal entering the mold over time is determined and correlated with casting machine position and velocity data to estimate wall thickness along the length of the pipe. Process defects can then be identified promptly and corrective action taken.

Abstract: A method and apparatus for providing an estimate of uniformity of wall thickness of a centrifugally cast object, such as a pipe cast from molten iron, substantially immediately after the casting process is complete. The volume of molten metal entering the mold over time is determined and correlated with casting machine position and velocity data to estimate wall thickness along the length of the pipe. Process defects can then be identified promptly and corrective action taken.

Abstract: The invention relates to a deep hole drilling method for producing a pipe with an inner profile which has at least one recess extending helically along the inner side of the pipe, wherein with a deep hole drilling machine a tool, comprising a basic body extending along a longitudinal axis and at least one cutting edge arranged on an outer circumference of the basic body, is pulled or pushed through the interior of the pipe while being turned about its longitudinal axis, so that the cutting edge completes a cut along a helical cutting line on the inner side of the pipe.

Abstract: The invention relates to a device and to a method for sensing a conveying rate at which liquid material is filled into a metallurgical target vessel (6) from a pivotable starting vessel (4). For this purpose, means for determining an amount of liquid material with which the initial vessel (4) has been filled and means for sensing an amount of the liquid material which is discharged toward the target vessel (6) or filled into the target vessel (6) by pivoting of the starting vessel (4) are provided.

Abstract: A method of making a refractory article having excellent high-temperature thermal shock resistance and creep resistance is provided. The method includes the step of providing a refractory composition primarily composed of chamotte having controlled particle sizes. The refractory composition may also include mullite, fused silica, calcined alumina and microsilica having controlled particle sizes, and further includes an aqueous colloidal silica binder. The refractory composition is then formed into a refractory article, which is dried and hardened.

Abstract: A method of fabricating at least one metal part for a turbine engine, the method including the steps of casting a metal alloy by centrifuging into a permanent metal mold for making a blank; obtaining a cast blank of elongate shape and of section that is circular or polygonal; and machining the blank to make the part.

Abstract: A method for making an equiaxed investment casting. The method utilizes an ultrasonic generator to send an ultrasonic pulse into molten metal in an investment casting mold. The investment casting mold is positioned within a working zone of furnace having low output induction coils for generating a convection current in molten metal. The ultrasonic pulse separates dendrites growing from the face of the mold inward into the molten metal. Instead, equiaxed grains can nucleate within the molten metal. In addition, the ultrasonic pulse and the low output induction coils circulate the molten metal as solute is rejected from solidifying equiaxed grains. The mixing reduces the effects of segregation in the solidifying alloy and assists in nucleating equiaxed grains.

Abstract: A method for manufacturing a high-strength golf iron head with a thin striking faceplate includes placing a shell mold onto a rotary table. At least one metal ingot is placed into a crucible portion of the shell mold and melts in a vacuum environment. The rotary table rotates to cause the molten metal to flow into a cavity portion of the shell mold. The rotating shaft is slowly stopped, and the shell mold is removed after pouring. The shell mold is destroyed after the molten metal cools and solidifies, obtaining a casting. A cast product portion is separated from the casting to obtain at least one golf iron head subsequently treated with heat treatment to provide a striking faceplate of the golf iron head with a tensile strength of 280-340 ksi, an elongation of 4%-20%, and a minimum thickness of 1.4-1.8 mm excluding a groove depth of the striking faceplate.

Abstract: A method for manufacturing a high-strength blade-type golf iron head with a thin blade includes placing a shell mold onto a rotary table. At least one metal ingot is placed into a crucible portion of the shell mold and is heated to melt in a vacuum environment. The rotary table rotates to cause the molten metal to flow into a cavity portion of the shell mold. The rotating shaft is slowly stopped, and the shell mold is removed after pouring. The shell mold is destroyed after the molten metal cools and solidifies, obtaining a casting. A cast product portion is separated from the casting to obtain at least one blade-type golf iron head having the blade with a minimum thickness of 3.5-5.0 mm. The weight of the blade-type golf iron head is reduced by 0.9-2.5%, and the center of gravity of the blade-type golf iron head is lowered by 0.2-0.75 mm.

Abstract: A centrifugal casting apparatus includes a mold holder placed on a freely rotatable rotary table, and a mold put into and held by the mold holder. The mold holder includes a mold holder body made of a metal material and having a bottomed cylindrical shape, heat insulation members provided on an inner peripheral surface and a bottom surface of the mold holder body, and mold positioning members each made of a ceramic and provided to protrude from the heat insulation member on the bottom surface of the mold holder body. The mold includes a mold body having a cavity into which a molten metal is to be poured, and a mold base provided to the mold body and having mold positioning member insertion holes engageable with the mold positioning members.

Abstract: A method of making a radial pattern assembly is disclosed. The method includes forming a hollow sprue comprising a sprue wall disposed about a longitudinal axis, the sprue wall having a thickness, a length and a periphery; a pattern disposed outwardly of the sprue wall; and an outwardly extending gate attached to and extending between an outer surface of the sprue wall and the pattern, the hollow sprue, pattern and gate each formed from a fugitive material.

Abstract: A method of forming an earth-boring tool includes introducing metal into a die, rotating the die to generate centrifugal forces on the metal, and cooling the metal in the rotating die. A rotary drill bit may include a unitary, centrifugally cast bit body including an integral shank, at least one blade, and at least one cutting element on the blade. A rotary drill bit or a roller cone may include a first centrifugally cast material and a second centrifugally cast material. Another rotary drill bit includes a bit body comprising a maraging steel alloy. A method of forming a rotary drill bit may include disposing cutting elements on a rotary drill bit comprising maraging steel and aging the rotary drill bit to form at least one intermetallic precipitate phase. Methods of repairing a rotary drill bit include annealing and aging at least a portion of a rotary drill bit.

Abstract: Occurrence of a casting defect in a cast-metal object is suppressed, and a crystal structure of the cast-metal object is made fine. When a cast-metal object is to be produced by using a casting mold, a metal material generating a free crystal during solidification is melted first. Subsequently, a molten metal including a melted metal material is poured into the casting mold. While the free crystal in the molten metal is deposited on a surface of the casting mold, the molten metal is solidified in the casting mold. Through the above steps, the molten metal is solidified in the casting mold, and the cast-metal object is produced.

Abstract: Herein disclosed is a centrifugally cast pole having a substantially uniform wall thickness along the long axis of the pole. During centrifugal casting, molten metal is poured inside a rotating, tapered mold. As chilled liquid is poured over the outside of the rotating mold, the metal forms, or paints, to the contour of the mold interior creating a metal pole. By precisely controlling casting gyrations such as the spin, travel, pitch, and yaw of the rotating mold and the calibration and physical mechanisms of the casting machine, hollow, tapered, tubular metal poles are produced with previously unknown uniformity of wall thickness. The controlling principles, designs, and mechanisms of this centrifugal casting method enable wall uniformity to extremely high tolerances. By extension, the ability to precisely control the metal volume painted inside the mold allows, as a design choice, wall thickness variation in any embodiment if so desired.

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 method and apparatus for centrifugal casting, in which transfer functions are developed relating the fluidity of molten metal, for example iron of varying composition, to casting machine movement for a particular mold in order to cast objects, for example pipe, having desired and uniform characteristics, including wall thickness. Fluidity is calculated for each pour of molten metal based on the measured pour temperature and measured liquidus arrest temperature. A drive system controlled by a programmable logic controller moves the casting machine in accordance with the output of the transfer functions based on the calculated fluidity.

Abstract: Methods of fabricating earth-boring tools include forming an outer portion of an earth-boring tool from a powder mixture comprising hard particles and matrix particles comprising a metal matrix material, disposing a molten material at least partially within the outer portion of the earth-boring tool, and forming the molten material into another portion of the earth-boring tool. Methods of fabricating a bit body of an earth-boring rotary drill bit include forming an outer portion comprising a plurality of hard particles and a plurality of matrix particles comprising a metal matrix material and casting a molten material at least partially within the outer portion of the bit body to form another portion of the bit body. Earth-boring tools include a body for engaging a subterranean borehole having an outer portion and an inner portion comprising at least one material solidified within a cavity formed within the outer portion.

Abstract: Disclosed herein is a device comprising: vacuum chamber; a stage configured to receive BMG in a molten state or a BMG feedstock, configured to spin, and located in the vacuum chamber; a heater configured to melt the BMG feedstock or to keep BMG in a molten state molten; wherein the stage comprises one or more conduits therein and the conduits are configured to accommodate a cooling fluid. Also disclosed herein is a method of forming a solid BMG sheet, the method comprising: disposing BMG in a molten state onto a stage; spreading the BMG in a molten state into a sheet of BMG in a molten state by spinning the stage; cooling the sheet of BMG in a molten state to form a solid BMG sheet.

Abstract: A centrifugal casting apparatus includes a rotatable assembly to rotate about a rotation axis. The rotatable assembly includes a sprue chamber positioned about the rotation axis and is shaped to receive a supply of molten material. A first gate and a second gate are positioned to receive molten material from the sprue chamber in a general direction of centrifugal force. A first cavity and a second cavity are stacked and are respectively positioned to receive molten material from the first gate and the second gate in the general direction of centrifugal force.

Abstract: A centrifugally cast composite roll comprising an outer layer made of cast iron having a chemical composition comprising, by mass, 2.7-3.5% of C, 1.5-2.5% of Si, 0.4-1.0% of Mn, 3.7-5.1% of Ni, 0.8-2.2% of Cr, 1.5-4.5% of Mo, 2.0-4.5% of V, and 0.5-2.0% of Nb, the balance being Fe and inevitable impurities, a mass ratio of Nb/V being 0.18-0.65, and a mass ratio of Mo/V being 0.7-2.5, and a structure comprising, by area, 15-45% of a cementite phase and 1-10% of a graphite phase, and an inner layer made of cast iron having excellent mechanical strength and metallurgically bonded to the outer layer; a usable region of the outer layer as deep as 10 mm or more from the surface containing substantially no speck-like-segregated dendrites of bainite and/or martensite having diameters of 1.5 mm or more.

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 method and apparatus for centrifugal casting, in which transfer functions are developed relating the fluidity of molten metal, for example iron of varying composition, to casting machine movement for a particular mold in order to cast objects, for example pipe, having desired and uniform characteristics, including wall thickness. Fluidity is calculated for each pour of molten metal based on the measured pour temperature and measured liquidus arrest temperature. A drive system controlled by a programmable logic controller moves the casting machine in accordance with the output of the transfer functions based on the calculated fluidity.

Abstract: 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.

Abstract: A method of forming an earth-boring tool includes introducing metal into a die, rotating the die to generate centrifugal forces on the metal, and cooling the metal in the rotating die. A rotary drill bit may include a unitary, centrifugally cast bit body including an integral shank, at least one blade, and at least one cutting element on the blade. A rotary drill bit or a roller cone may include a first centrifugally cast material and a second centrifugally cast material. Another rotary drill bit includes a bit body comprising a maraging steel alloy. A method of forming a rotary drill bit may include disposing cutting elements on a rotary drill bit comprising maraging steel and aging the rotary drill bit to form at least one intermetallic precipitate phase. Methods of repairing a rotary drill bit include annealing and aging at least a portion of a rotary drill bit.

Abstract: A profiled binding for use in a roller press. An alloy containing a high degree of chromium is used. A high wear-resistance of the binding is thereby achieved, said binding not being sensitive with respect to build-up weldings in order to reconstruct the profile after wear.

Abstract: Tubular metal articles such as pipe and cylinder liners are produced by centrifugal casting on a permanent metal mold coated by refractory glass on the active surface. A coating suspension mix is evenly distributed onto the mold to form a uniform layer of insulation on the surface of the mold. The material for the coating comprises of essentially a waterborne suspension mix of glass particles. The suspension is given time to dry on the surface of the mold. The glass particles dispersed in the suspension are both non-crystalline and nonporous. The glass particles in the suspension and forming the coating are not dissolved and do not chemically attract the polar water molecule or cause it to bond to the surface of glass in the suspension or to the mold active surface. Articles cast as such are smooth surfaced and require only limited machining.

Abstract: Devices and methods are disclosed for the centrifugal casting of spheres, particularly hollow spheres containing low air pressure, as well as solid and hollow spheres having a gradient internal density. Molten or self-hardening casting material is introduced into a hollow spherical mold and the mold made to rotate about two axes intersecting at the center of the mold. The resulting centrifugal forces cause the casting material to be evenly distributed about the inner surface of the mold. If a mixture of casting materials of different densities is used, the densest material will settle closer to the walls of the mold, while less dense materials will move closer to the center. The casting material is hardened and the resulting sphere is removed from the mold. One or more valves may be employed to transport fluent materials into and out of the mold. If gas is removed from a partially-filled mold prior to casting, the product will be a hollow sphere having an interior pressure less than ambient.

Abstract: A brake drum which can improve the drag strength, strength and rigidity in the diametrical direction, joint strength, and heat radiating ability, that is, a brake drum which is used for a drum brake, wherein the drum has a plurality of the projections at the outer circumferential surface, the plurality of the projections are formed at the outer circumferential surface as a whole when casting a brake drum, and at least part of the projections have thin-waisted shapes. A height of the projections is 0.3 to 5.0 mm, while the number of projections is 5 to 100/cm2. The brake drum is produced by centrifugal casting.

Abstract: A method of forming a cast component includes at least partially surrounding an investment mold in a heat-insulating packing material, feeding a molten alloy into the investment mold to provide a filled investment mold, and agitating the filled investment mold while solidifying the molten alloy.

Abstract: A method for centrifugal casting using a sand core having a refractory coating applied in a dry state, without the use of a liquid carrier, said coating sufficient to withstand the adverse forces of the centrifugal casting environment and yield a finished cast surface with a consistent, smooth surface. The coating may be applied by pressing the coating into a mixture of refractory material and impacting media fluidized in a vibratory bed such that the core floats in the mixture, and then rotating the core to coat the surfaces that will be in contact with the molten metal in the casting process.

Abstract: Molten metal is introduced into the cavity by a combined gravity feed and centrifugal force feed using a rotating turntable under electrical or electronic control. The centrifugal force is controlled to be substantially constant until the metal has solidified. This is accomplished by controlling the ramp-up acceleration of the turntable where rotational velocity is a time-dependent function of rotational radius and molten metal mass and taking into account the flow rate and cooling rate of the liquid metal. The process reduces waste and the attendant energy consumption associated with the quantity of metal required to be melted for the initial pour and associated with reprocessing and reusing the waste component.

Abstract: A steel piston ring and a steel cylinder liner are described which comprise as the main body a steel composition which has good nitridability. The steel composition consists of the following elements: 0-0.5 weight % B, 0.5-1.2 weight % C, 4.0-20.0 weight % Cr, 0-2.0 weight % Cu, 45.30-91.25 weight % Fe, 0.1-3.0 weight % Mn, 0.1-3.0 weight % Mo, 0-0.05 weight % Nb, 2.0-12.0 weight % Ni, 0-0.1 weight % P, 0-0.05 weight % Pb, 0-0.05 weight % S, 2.0-10.0 weight % Si, 0-0.05 weight % Sn, 0.05-2.0 weight % V, 0-0.2 weight % Ti and 0-0.5 weight % W. The steel piston ring and the steel cylinder liner can be manufactured in a casting process using the machinery and technology employed for the manufacture of cast iron parts.

Abstract: A method has been found for centrifugal casting engine cylinders. A mold is charged with molten aluminum alloy and particulate silicon monoxide having an average size of 0.01 mm to 0.04 mm. The mold is rotated at a velocity and period of time to distribute the particulate silicon monoxide on an inner cylinder surface. The mold is allowed to cool until the aluminum alloy solidifies. A casting is demolded characterized in a uniform inner cylinder surface of the particulate silicon monoxide in an amount of 25 volume % and thickness 1 to 5 millimeters. The engine cylinders are distinguished in resistance to wear. Cylinder liners show no appreciable wear for over 100,000 miles of use.

Abstract: A method of producing a precision centrifugal casting includes: a) providing a centrifugal casting device having a rotor rotatable around an axis, at least one crucible accommodated in the rotor, and at least one mold associated with the crucible and disposed at a first radial distance from the axis, b) creating a metal melt within the crucible, c) rotating the rotor thereby forcing the melt using centrifugal forces from the crucible into the mold, d) exerting a pressure on the melt forced into the mold until the temperature of the solidifying melt 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 just when the mold is completely filled, times a factor of 1.0 to 5.0, and e) relieving the pressure when the temperature of the solidifying melt is lower than the predetermined cooling-temperature.

Abstract: A turbine blade having a leading edge portion and a flowing-off edge portion is formed using the following steps: providing a centrifugal casting device having a rotor and at least one crucible being accommodated in the rotor; providing a mold having an extended cavity for forming the turbine blade; arranging the mold so that an inlet opening of the mold is arranged with an outlet opening of the crucible, and further arranging the mold so that a mold leading edge is directed in a direction against the rotational direction of the rotor; forcing a metal melt by means of centrifugal forces from the crucible into the mold; exerting a pressure on the melt being forced into the mold until the temperature of the solidifying melt has reached a predetermined cooling-temperature; and relieving the pressure when the temperature of the solidifying melt is below the predetermined cooling-temperature.

Abstract: A lead-free copper alloy includes, in combination by weight, about 10.0% to about 20.0% bismuth, about 0.05% to about 0.3% phosphorous, about 2.2% to about 10.0% tin, up to about 5.0% antimony, and up to about 0.02% boron, the balance essentially copper and incidental elements and impurities. The alloy contains no more than about 0.05 wt. % or 0.10 wt. % lead.

Abstract: A production of precision castings by centrifugal casting, includes the following steps: a) providing in a crucible (8) a melt of the following composition: Ti45-52 at. %Al45-50 at. %Xl1-3 at. %X22-4 at. %X30-1 at. %/ where Xl =Cr, Mn, V, X2=Nb, Ta, W, Mo, X3=Si, B, C; b) forcing the melt by means of centrifugal forces from the crucible (8) into a mold (4); c) solidifying the melt within the mold thereby creating a casting consisting of a titanium alloy having a lamellar microstructure; and d) reheating the casting for a duration of 60 to 150 hours at a temperature higher than the eutectic temperature and lower than the alpha-transus temperature of the composition.

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 centrifugal casting method and apparatus for casting molten metal into a mold. The casting apparatus includes a housing provided with a bottom surface and a retaining wall for minimizing a number of projectiles that escape the housing during casting operations. A prime mover is provided for imparting a centrifugal force on the molten metal, and an arm is coupled to the prime mover adjacent to a proximate end to be rotated about a rotational axis and to support a cradle for receiving the mold adjacent to a distal end. A crucible is to be coupled to the arm for supporting the molten metal to be cast into the mold, while a catch surface is disposed between the arm and the bottom surface of the housing to collect molten metal that is cast but not received within the mold.

Abstract: The invention relates to a stainless steel product, particularly to a duplex stainless steel casting with high machinability, to the use of the product and to the method to produce the product. The product contains in weight percent up to 0.07% carbon, up to 2% silicon, 3-8% manganese, 19-23% chromium, 0.5-1.7% nickel, up to 1% of molybdenum and/or tungsten with the formula (Mo+½W) less than 1%, up to 1% copper and 0.15-0.30% nitrogen, the remainder being iron and incidental impurities.

Abstract: Control is provided over the pouring of iron in the casting of iron pipe in a centrifugal casting machine. The initial flow of molten iron from the pouring ladle into the trough actuates an electric eye. A second electric eye is actuated when the molten iron has filled the pouring ladle. The centrifugal casting machine is rolled up to surround the trough, the bell end of the pipe to be formed being at the end of the trough. The molten iron is poured into the casting machine trough and flows into the bell section of the pipe being cast. The casting machine is then moved away from the trough end to form the rest of the pipe.

Abstract: The present disclosure relates to a wire and a method of forming a wire including an iron based glass forming alloy including iron present in the range of 43.0 to 68.0 atomic percent, boron present in the range of 12.0 to 19.0 atomic percent, nickel present in the range of 15.0 to 17.0 atomic percent, cobalt present in the range of 2.0 to 21.0 atomic percent, optionally carbon present in the range of 0.1 to 6.0 atomic percent and optionally silicon present in the range of 0.4 to 4.0 atomic percent, wherein said wire has a thickness of 140 ?m or less and wherein said wire includes spinodal glass matrix microconstituents. The wire may be used in abrading a substrate.

Abstract: Techniques for forming cast parts for medical devices suitable for contact with internal regions of patients are described herein. Such parts can be small in scale (e.g., having a major axis less than 0.3 inches, and/or a minor axis less than about 0.08 inches), and can be formed from metals that have a high melting point and high reactivity with environmental components or mold surfaces, such as stainless steel and titanium alloys. Such techniques can include injecting molten metal into the sprue of a mold tree such that the side runners are backfilled after the molten metal impacts a closed end of the sprue. Side runners can be oriented in particular directions and positions to promote backfilling. As well, flask temperatures and the use of surfactants can also promote cast part formation, hindering the formation of surface defects.

Abstract: A centrifugal casting method and apparatus for casting molten metal into a mold. The casting apparatus includes a housing provided with a bottom surface and a retaining wall for minimizing a number of projectiles that escape the housing during casting operations. A prime mover is provided for imparting a centrifugal force on the molten metal, and an arm is coupled to the prime mover adjacent to a proximate end to be rotated about a rotational axis and to support a cradle for receiving the mold adjacent to a distal end. A crucible is to be coupled to the arm for supporting the molten metal to be cast into the mold, while a catch surface is disposed between the arm and the bottom surface of the housing to collect molten metal that is cast but not received within the mold.

Abstract: The present invention relates to a casting mold having a molten metal received therein which is rotated in one direction by a rotary device with the vertical axis as a rotary axis while solidifying the molten metal for a predetermined period of time, and, after the predetermined period of time is lapsed, the casting mold is rotated in the direction opposite the direction of rotation for a predetermined period of time, and the rotation in the opposing directions is repeated so that the molten metal is solidified. The molten metal can be shaken and agitated without roughening the surface of the molten metal to uniformalize the distribution of temperature of the molten metal in the casting mold.

Abstract: Molten metal is introduced into the cavity by a combined gravity feed and centrifugal force feed using a rotating turntable under electrical or electronic control. The centrifugal force is controlled to be substantially constant until the metal has solidified. This is accomplished by controlling the ramp-up acceleration of the turntable where rotational velocity is a time-dependent function of rotational radius and molten metal mass and taking into account the flow rate and cooling rate of the liquid metal. The process reduces waste and the attendant energy consumption associated with the quantity of metal required to be melted for the initial pour and associated with reprocessing and reusing the waste component.

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: The present invention is an alloy lump for R-T-B type sintered magnets, including an R2T14B columnar crystal and an R-rich phase (in which R is at least one rare earth element including Y, T is Fe or Fe with at least one transition metal element except for Fe, and B is boron or boron with carbon), in which in the as-cast state, R-rich phases nearly in the line-like or rod-like shape (the width direction of the line or rod is a short axis direction) are dispersed in the cross section, and the area percentage of the region where R2T14B columnar crystal grains have a length of 500 ?m or more in the long axis direction and a length of 50 ?m or more in the short axis direction is 10% or more of the entire alloy.

Abstract: Apparatus for forming a cast component has a chamber for holding an alloy and which is rotated about an axis to separate an impurity from the alloy by centrifugal force. The chamber feeds a mould that is also rotating and into which the alloy is supplied to form a component by centrifugal casting.

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.