Abstract: Vibration systems and systems including vibration systems for filling incomplete components with slurry material are disclosed. The vibration systems may include a vibration platform, and a component retention plate releasably coupled to the vibration platform. The component retention plate may include a plurality of component holders positioned on the component retention plate. Each of the plurality of component holders may receive a distinct, incomplete component in a predetermined orientation. The vibration systems may also include a motor operatively coupled to the vibration platform to vibrate the vibration platform at a predetermined frequency. The predetermined frequency may be based on characteristic(s) of each of the incomplete components.

Abstract: A system for manufacturing a Three Dimensional (3D) printed component is provided. The system includes a substrate adapted for at least partially 3D printing the component thereon. The substrate includes a first geometrical feature. The system also includes a plurality of processing stations interconnected to one another. Each of the plurality of processing stations is adapted to receive the substrate. Each of the plurality of processing stations includes a second geometrical feature adapted to interlock with the first geometrical feature.

Abstract: Devices, systems, and methods are directed to applying magnetohydrodynamic forces to liquid metal to eject liquid metal from a nozzle along a controlled pattern, such as a controlled three-dimensional pattern as part of additive manufacturing of an object. A feeder system can provide a continuous or substantially continuous supply of a solid metal to the nozzle to facilitate a correspondingly continuous or substantially continuous process for ejecting liquid metal as part of a commercially viable manufacturing process.

Abstract: A polycrystalline diamond compact (PDC) cutting element includes a substrate and a polycrystalline diamond compact. The substrate comprises a ceramic-metal composite material including hard ceramic particles in a metal matrix. The polycrystalline diamond compact includes interbonded diamond particles. Interstitial material disposed within interstitial spaces between the interbonded diamond particles comprises aluminum and at least one element of the ceramic-metal composite material of the substrate. A method of manufacturing such a PDC cutting element includes forming a mixture including diamond particles and particles of aluminum, and subjecting the mixture and a substrate to a high pressure, high temperature (HPHT) sintering process.

Abstract: A bonded diamond body having a high bonded strength is provided. The bonded diamond body includes a sintered polycrystalline diamond body, a hard substrate, and a hard layer provided between the sintered polycrystalline diamond body and the hard substrate, the sintered polycrystalline diamond body containing a diamond grain and a sintering aid, the hard substrate containing tungsten carbide and cobalt, and the hard layer containing cobalt and a hard grain made of a carbide, a nitride, or a carbonitride having a Vickers hardness of 1100 Hv or more.

Abstract: A hard alloy includes complex carbonitride hard phases that contain Ti and at least one additional element, and a metal binder phase containing an iron group element as a main component element. The complex carbonitride hard phases include homogeneous composition hard phases where in-complex carbonitride hard phase average concentrations of Ti and the additional element have a difference of greater than or equal to ?5 atom % and less than or equal to 5 atom % from average concentrations of Ti and the additional element in all the complex carbonitride hard phases. On any cross section specified in the hard alloy, a cross-sectional area of the homogeneous composition hard phases accounts for greater than or equal to 80% of a cross-sectional area of the complex carbonitride hard phases, and the homogeneous composition hard phases account for greater than or equal to 80% of the complex carbonitride hard phases in number.

Abstract: A chuck (10) has a body (14), a plurality of jaws (22), and a rotatable nut (16). A sleeve (18) is rotatable between a first rotational position and a second rotational position with respect to the nut. An annular array of first teeth (84) are non-rotatable with respect to the body. One or more second teeth (63) are non-rotatable with respect to the nut and axially movable with respect to the body. When the teeth engage, they resist the nut's rotation in the opening direction. An engagement between the sleeve and the one or more second teeth moves the one or more second teeth out of engagement with the first teeth when the sleeve moves from the second rotational position to the first rotational position and moves the one or more second teeth into engagement with the first teeth when the sleeve moves from the first rotational position to the second rotational position.

Abstract: A modulating tool holder includes a tool holder first end and a tool holder second end, and a central axis extending between the tool holder first end and the tool holder second end. The tool holder first end has a coupler for coupling the tool holder to a drive member of a machining device and the second end includes a clamp for releasably holding either a tool or a workpiece. A rotatable spindle member extends axially in the tool holder and imparts a rotational movement to the clamp. A central fluid passageway extends between first and second ends of the rotatable spindle member for conveying a fluid. A linear actuator is configured to impart an oscillating movement to the clamp. The linear actuator is functionally decoupled from the torsional load of the rotatable spindle member.

Abstract: A facer for use in preparing the opposed ends of polyolefin pipes for fusion into a pipeline has a pair of cutting wheels which rotate in unison. A controller causes the cutting wheels to trace and face the pipe end walls in a closed loop path.

Abstract: According to one aspect of this disclosure, a grooving tool is provided. The grooving tool has a body with a plurality of recesses. Plural inserts assembled into each of the recesses. The recesses include a cutting edge for forming grooves in an engine cylinder wall when rotated in one rotational direction. The insert also includes a peening surface extending in the opposite rotational direction from the cutting edge for deforming the upper edges of the grooves when rotated in an opposite rotational direction.

Abstract: A surface coated cutting tool having surfaces including a rake face and a flank face and a cutting edge defined by a boundary portion between the rake face and the flank face includes a substrate and a coating which covers the surfaces of the substrate, the coating having a TiAlN layer having an NaCl type crystal structure, and relation of 0.65<XR?0.9, 0.65<XF?0.9, 0.4?XE?0.7, XR?XE?0.2, and XF?XE?0.2 being satisfied, with a composition of the TiAlN layer in a cutting edge region located in the cutting edge being expressed as Ti1-XEAlXEN, a composition thereof in a rake face region located in the rake face being expressed as Ti1-XRAlXRN, and a composition thereof in a flank face region located in the flank face being expressed as Ti1-XFAlXFN.

Abstract: A method of milling a piece of raw steel stock comprising: arranging a minimum of four solid pole extensions on top surface segments of a magnetic chuck such that the solid pole extensions are relatively evenly distributed under a piece of raw steel stock and within 2 inches of a perimeter of the piece of raw steel stock; arranging multiple mobile pole extensions beneath the piece of raw steel stock and on every other top surface segment of the magnetic chuck under the piece of raw steel stock that is not occupied by the solid pole extensions but beneath the piece of raw steel stock, each of the multiple mobile pole extensions having a biased top portion that contacts the piece of raw steel stock; milling the piece of raw steel stock with a face mill that generates steel chip as swarf; and recycling the steel chip.

Abstract: A power tool including a housing having a handle configured to be grasped by a user, a motor supported by the housing, a driving gear rotated by the motor, and a driven gear engaging the driving gear to be rotated by the driving gear about a rotation axis. The power tool also includes a pin extending from the driven gear and offset from the rotation axis and a spindle having a yoke coupled to the pin to translate rotation of the driven gear into reciprocating motion of the spindle. A notch is formed in an outer periphery of the yoke to provide clearance for the driving gear as the spindle is driven by the pin.

Abstract: A staggered-teeth diamond saw blade includes a circular steel base and a side wall provided at an outer edge of the steel base. Multiple first diamond cutter heads and multiple second diamond cutter heads are alternately arranged at the side wall through laser brazing; multiple diamond teeth protection cutter heads are uniformly distributed on an external surface of the steel base through high frequency induction brazing; a pre-plating layer is preformed at a welding surface where the side wall is welded with the first diamond cutter heads and the second diamond cutter heads; a pre-plating layer is preformed at a welding surface where the external surface of the steel base is welded with the diamond teeth protection cutter heads. The diamond cutter heads of the present invention are staggered to thicken the thickness thereof while cutting concrete pavement and other materials at high speed.

Abstract: A method of producing a workpiece having a desired gear geometry by means of a suitably dressed tool may include specifying a desired gear geometry of the workpiece and selecting a combination of a dresser and a tool, such that the desired gear geometry of the workpiece can be produced by the selected combination at least within one permitted tolerance. The method may further include dressing the tool with the dresser in line contact for producing a suitable gear geometry of the tool and machining the workpiece with the dressed tool for producing the desired gear geometry of the workpiece at least within a permitted tolerance.

Abstract: The polishing system includes a power supply. The polishing system also includes a container including an interior portion. The interior portion includes a conductive material thereon. The conductive material is electrically coupled to the power supply. The polishing system also includes an electrolytic solution disposed within the container. The electrolytic solution includes a plurality of abrasive particles. The polishing system further includes a flexible media disposed within the container. The container is configured to contain an object. The power supply configured to electrically couple to the object. Each of the electrolytic solution, the flexible media, and the abrasive particles is configured to partially polish the object substantially simultaneously.

Abstract: It is an object of the present invention to effectively suppress the overflow of brazing material from each joint of a sinter-brazed component, such as a planetary carrier, obtained by brazing a plurality of members together. According to the present invention, there is provided a sinter-brazed component obtained by mating and joining a first member having a first bonding surface and a second member having a second bonding surface to each other. Brazing material is provided between the first bonding surface and the second bonding surface. The first bonding surface has a first recess, the first recess having an inner peripheral wall and a bottom surface. The inner peripheral wall extends along and on an inner side of a profile line of the first bonding surface.

Abstract: The present invention provides a method for producing a TIG-welded stainless steel tube without adding H2 to a shielding gas, while inhibiting generation of a weld defect. The method is a method for producing a TIG-welded stainless steel tube and includes the steps of bending a stainless steel strip in a width direction so as to butt both edges against each other and TIG-welding the both edges thus butted. A pulse waveform of a pulse frequency of 40 Hz to 300 Hz is used as a current waveform of a welding power source.

Abstract: A method for hardfacing a metal article is disclosed including applying a first pass of a metal composition to a surface of the metal article along a first application path, applying a second pass of the metal composition to the surface along a second application path, and applying a third pass of the metal composition to the surface along a third application path between the first application path and the second application path. The first pass and the second pass form a hardfacing perimeter, and the third pass fills in the hardfacing perimeter.

Abstract: Methods and apparatus to communicate via a weld cable are disclosed. An example weld circuit communications device includes a receiver circuit, a processor, and a local communications adapter. The receiver circuit to receive a communication via a weld circuit while current is flowing through the weld circuit or after the current has stopped flowing through the weld circuit, the communication including weld voltage feedback information measured at a device remote from a power supply and remote from the weld circuit communications device while the current is flowing through the weld circuit. The processor generates power supply control information based on the weld voltage feedback information. The local communications adapter transmits the power supply control information to control welding-type power output by a power converter to regulate a weld voltage to a weld voltage setpoint.

Abstract: A welding system includes a welder configured to output welding power to generate an arc between a welding electrode and a workpiece. The welding system also includes a power pin configured to be coupled to the welder in a first orientation or a second orientation. The power pin is configured to switch the welding power from a first polarity to a second polarity when the power pin is switched from being coupled to the welder in the first orientation to being coupled to the welder in the second orientation.

Abstract: A different material welded joint in which a first member made of a first material and a second member made of a second material having a melting point lower than that of the first material are joined to each other by welded parts at a plurality of welding sections, wherein the first member has a plurality of through-holes respectively corresponding to the plurality of welding sections and a filler material made of the second material is filled in the plurality of through-holes, and wherein apexes of welding beads of the welded parts, which are deposited and formed on a surface of the second member facing the through-holes, are formed independently of each other at each of the welding sections.

Abstract: An arc welder cable includes a resiliently flexible hose, an intermediate sheath, a plurality of conductors, and an outer sheath. The hose defines an axial passageway configured to permit passage of a welding wire and a shielding gas therethrough. The intermediate sheath circumscribes the hose such that the hose is disposed radially within the intermediate sheath. The intermediate sheath is made from an electrically-insulative material and is in sealing contact with an outer surface of the hose. The conductors are disposed circumferentially about the intermediate sheath and disposed radially outward of the intermediate sheath. The conductors extend along the intermediate sheath in a helical manner. The conductors are made from an electrically-conductive material. The outer sheath is made from an electrically-insulative material and circumscribes the conductors such that the conductors, the intermediate sheath, and the hose are disposed radially within the outer sheath.

Abstract: Embodiments of arc plasma cutting torches are disclosed. In one embodiment, an eccentric plasma cutting torch includes an upper portion and a lower portion. The lower portion is angled on one side along a length ? which results from continuously smaller cross sections of the lower portion which are biased towards a non-angled side of the torch. As a result, a central axis of an electrode of the torch, used for cutting, is biased by an offset from a central axis of the upper portion towards the non-angled side of the torch. Such an offset allows for a torch tip region of the torch to get closer into otherwise difficult-to-access portions of workpieces for cutting. Furthermore, the overall dimensions of the torch are configured such that cooling elements within the torch dissipate enough heat to keep the torch in a stable operating condition during a cutting operation.

Abstract: A turbocharger wheel (4) and shaft (1) assembly exhibits a frustoconical geometry of welding zone contact surfaces extending to the outer circumference of the shaft (1). This frustoconical geometry not only allows continuous centering of the parts (1, 4) during joining, it also eliminates the problem of stress propagation along a plane. The location of the electron beam is shifted so that only the radially outer segment of the frustoconical contact surface is joined by welding, leaving a radially inner unmelted and unfused zone for maintaining firm contact of the oblique surfaces.

Abstract: A pressing ram having an elastic cushion element and intended for the material-bonded press-sintering connection of a first connection partner to a second connection partner of a power-electronics component. The elastic cushion element of the pressing ram is enclosed by a dimensionally stable frame, within which the cushion element and a guide part of the pressing ram are guided for linear movement such that the dimensionally stable frame lowers onto the first connection partner, or a workpiece carrier with the first connection partner arranged therein, and, following abutment against the same, the pressing ram together with the elastic cushion element is lowered onto the second connection partner and the elastic cushion exerts a pressure necessary for connecting the first connection partner to the second connection partner.

Abstract: An additive manufacturing temperature controller/temperature sensor uses one or more spectrophotometric sensors to monitor temperature of successive layers and preferably localized sections of successive layers of a melt pool, and transients thereof, of an object being generated for the purpose of dynamic control of the additive manufacturing device and/or quality control of the generated object manufactured with the additive manufacturing device. Generally, the additive manufacturing temperature controller/sensor apparatus monitors temperature of a section of the object during manufacture as a function of wavelength, time, position, and/or angle to determine melt extent in terms of radius and/or depth.

Abstract: There is provided a power supply device that supplies an output current to an electric processing device which performs electric processing on workpieces. The device includes: a first power supply; a magnetic energy recovery switch that receives a current supplied from the first power supply, and converts the received current into the output current; and a control unit that controls the magnetic energy recovery switch such that an electric current frequency of the output current includes a first electric current frequency and a second electric current frequency which are different from each other within a one-time electric processing time using the electric processing device.

Abstract: A method of manufacturing a side-coupling structure, associated with coupling an aiming beam from an aiming beam fiber into a laser beam fiber, may include removing a coating from a section of the laser beam fiber and removing a coating from a section of the aiming beam fiber. The method may further include bringing the section of the aiming beam fiber in physical contact with the section of the laser beam fiber in order to create the side-coupling structure. The method may further include recoating the section of the laser beam fiber and the section of the aiming beam fiber in order to coat the side-coupling structure.

Abstract: This disclosure describes laser machining head cutting gas nozzles that include an inner nozzle having a nozzle opening configured to form a core gas flow, an outer nozzle having an annular gap surrounding the nozzle opening and configured to form an annular gas flow, and a sleeve in the annular gap, wherein the sleeve is arranged to be axially displaceable between a rearward position and a forward position, wherein the sleeve projects beyond the inner nozzle at least when in the forward position, and wherein the sleeve widens a cross-sectional area of the outer nozzle to a variable degree as the sleeve is displaced from the rearward to the forward position. Methods of using a cutting gas nozzle are also described.

Abstract: A laser-welded shape section steel includes a web member and a flange member each made of a steel plate, the steel plate having an equivalent carbon content Ceql of not less than 0.075 and not more than 0.15, the equivalent carbon content Ceql being represented by the following formula: Ceql=C+(Si/50)+(Mn/25)+(P/2)+(Cr/25)+Ti, where a welded part, which is a joint part in which the web member and the flange member are joined, has a hardness of not less than 1.2 times and not more than 4 times as hard as that of the steel plate, and the welded part a protrusion length of not greater than 1 mm.

Abstract: Disclosed is a lead welding apparatus, which is used for welding electrode leads of battery cells facing each other, among battery cells of a battery module, and the lead welding apparatus includes a welding unit configured to weld two electrode leads of the facing battery cells to each other, and a welding jig configured to closely adhere the two electrode leads of the facing battery to each other and press the two electrode leads at one side of the two electrode leads, when welding is performed.

Abstract: A method for producing a component by selective laser melting, wherein a number of lasers arranged next to one another generate a laser field, as a result of which powdery material can be melted in a selective manner for the purposes of generating contours. In the process, individual lasers of the laser arrangement can be switched on or off in a selective matter in order to irradiate or not irradiate certain regions. Furthermore, a device for carrying out the method is provided.

Abstract: A positioning structure of a frame welding assembly for a metal product, the metal product is a holding plate or a holding basket made of metal mesh and contains: multiple bodies, each of the multiple bodies is folded in a square shape and includes multiple raised faces and multiple slots which are stamped on a peripheral side of each body respectively. Two adjacent of the multiple bodies are connected together, and the two adjacent bodies have multiple recesses and multiple protrusions respectively formed on two connection sides thereof so that the multiple recesses retain with the multiple protrusions individually before welding the two adjacent bodies together.

Abstract: A mounting system having a dual plunger arrangement wherein the side of each plunger has a pull down cam to provide a desired pull down action in relation to at least two studs, the cams moving relative to one another and axially aligning relative to one another relative to the two axially spaced pull down studs to allow the plungers to provide a maximum hold down force for the two pull down studs, balance the hold down forces thereby maximizing performance and reducing unlocking forces.

Abstract: A dust suppression assembly is to be fixed on a handheld device. The dust suppression assembly comprises a device interface member having a top end and a bottom end and an intermediate member having a first intermediate end and a second intermediate end, the first intermediate end adapted to be coupled with the bottom end of the device interface member. Further, the device interface member is having a first channel and the intermediate member is having a second channel, the first channel and second channel joins to form a passage for supplying water to the working end of the tool for suppression of dust, while the handheld device is in use.

Abstract: A machine tool that cuts a workpiece by a rotary tool includes a tool spindle device that holds the rotary tool in a manner to allow self-rotation with a predefined tool rotational axis Rt as a center, one or more in-machine robots, and a connecting mechanism that attaches the in-machine robot on the tool spindle device so that the in-machine robot moves independently from the rotary tool at a periphery of the tool spindle device with the tool rotational axis Rt as a center.

Abstract: A dust extractor for a drill includes a housing having an engagement region for receiving the drill when connected to the dust extractor; and a latch mechanism. The latch mechanism includes a latch moveably mounted within the housing and moveable between a first position and a second position, a biasing mechanism biasing the latch towards the first position, and a catch attached to the latch. The catch has a chamfer which is arranged so that the chamfer slidingly engages the drill and moves the latch from its first position towards its second position when the drill enters the engagement region.

Abstract: A universal-fit vacuum assisted router hood tool attaches to the router to capture dust and particles generated by the router bit. A generally planar base plate is adapted to mount to the flat base of the router. The base plate has a central opening centered on the axis of the router so that associated router bit protrudes through. A dust collection dome is rotationally positioned in the central opening, and the dome has a central opening at the axis of the router A cuff connector extending out from the dust collection dome to a hose cuff that can receive a hose of a dust extractor. An annular flange within the dome at the top opening prevents dust and particulates from exiting the top opening of the dome.

Abstract: Disclosed is a lubricating device for wheel machining, which is composed of an air compressor, a safety valve, an oil drain valve, an oil tank, an oil filling port, an oil quantity regulating valve, an oil mist pressure regulating valve and the like. The air compressor is fixed on a frame, and an oil mist pressure regulating knob is connected outside the regulating valve; the other path is connected to an air pressure regulating valve, and an air pressure regulating knob is connected outside the regulating valve; an oil mist pressure gauge interface is arranged between the oil mist pressure regulating valve and an oil mist generator, and an oil mist pressure gauge is connected outside the interface; an air pressure gauge interface is arranged between the air pressure regulating valve and an air separator, and a compressed air pressure gauge is connected outside the interface.

Abstract: A sculptured drum for a retread process that has an inner radial section with a central axis that extends in an axial direction. The sculptured drum has a plurality of support members that extend outward from a drum outer surface in a radial direction and that are located outward from the inner radial section in the radial direction. A tread that has a plurality of grooves is supported by the sculptured drum during a brushing process and pass across the sculptured drum such that some but not all of the grooves have one of the support members disposed therein. The support members when disposed within the grooves do not completely fill the grooves, and when disposed within the grooves engage a lower surface of the tread.

Abstract: A rotary wheel cleaning device is composed of a feeding station, a cleaning station, a blowing station and a discharging station. The feeding station completes positioning, jacking and clamping of a wheel; the cleaning station completes cleaning of the wheel; the blowing station completes blowing of the wheel; and the discharging station transfers the cleaned wheel. The device can continuously perform the operations of feeding, cleaning, blowing and discharging of a wheel to be cleaned by rotating the wheel into different angular position on a station turntable, thereby automatic continuous production is achieved.

Abstract: Presented is a method, apparatus, and computer-readable medium for deburring. An apparatus includes a body, a first abrasive surface coupled to the body, and a second surface coupled to the body, the second surface positioned relative to the first abrasive surface, wherein the second surface is positioned between 1° and 90° relative to the first abrasive surface. The apparatus further includes a third abrasive surface coupled to the body, the third abrasive surface positioned perpendicular to the first abrasive surface and the second surface along a terminal edge of the first abrasive surface and a terminal edge of the second surface.

Abstract: A rotary bit for use with a rotary tool to improve grinding, sanding, buffing, polishing and like operations on a work object. The rotary bit is structured and arranged to flex when it comes into contact with round, curved and other shaped surfaces of the work object to prevent damage to those surfaces and the areas adjacent thereto. The rotary bit comprises a flexible member that fixedly or detachably mounts to one end of an elongated shaft of a mandrel that fits into and is rotated by the rotary tool. The flexible member has a compressible body with a cap member at the proximal end to provide stiffness and grit paper attached, either fixedly or removably, at the distal end to accomplish the desired work operations. The rotary bit can use different materials for the compressible body and different abrasive materials to accomplish the work operations.

Abstract: A handheld multifunction power tool includes a driveshaft, a hub assembly, and a stem. The hub assembly includes an outer hub and an inner hub that is rotatably coupled with the inner hub and rotatable with respect to the outer hub. Rotation of the inner hub relative to the outer hub facilitates selection from among a rotary mode and a random orbital mode.

Abstract: A method for deep roll peening a workpiece includes deep roll peening a workpiece by moving the workpiece along a feed path through multiple groups of opposed rollers that are arranged in series. Each group of opposed rollers includes a rim that defines a workpiece engagement surface that exerts a deep roll peening force on the workpiece. A deep roll peening system includes multiple groups of opposed rollers. Each of the opposed rollers is rotatably mounted and has a rim that defines a workpiece engagement surface. The workpiece engagement surfaces are spaced apart from each other by a gap. The groups are arranged in series such that the gaps define a feed path for receiving a workpiece into serial contact with the workpiece engagement surfaces.

Abstract: Machining guides and methods relating thereto are described. One example of the machining guide, according to the present arrangement, includes: (i) two or more frames, each of which includes—(a) a first guide member including first multiple plates; (b) a second guide member including second multiple plates; and (c) a pivoting connection pivotably connecting the first guide member and the second guide member, and wherein, during an operative state of the machining guide, one or both of the first and the second guide members of two or more of the frames pivot about the pivoting connection to allow two or more of the frames to be disposed around the workpiece; and (ii) one or more spacer plates being disposed between each of the frames and define a kerf between each of the frames such that, during the operative state of the machining guide, a tool through the kerf is capable of machining the workpiece.

Abstract: A wheel shape follow-up burr brushing device can brush burrs from a front, a back cavity and a spoke root groove of the wheel. The heights of brushes are adjusted, so that the brushes follow up the shape of the front, the back cavity and the spoke root groove of the wheel. The wheel is put onto a positioning roller bed by a manipulator, a positioning clamping cylinder drives four clamping wheels to clamp the wheel, four clamping wheel drive motors drive the wheel to be in a low-speed rotating state; two second cylinders drive a second rotating table to be fed downwards, two first cylinders drive a first rotating table to be fed upwards, and the rotating wheel is matched with the rotating brushes to brush burrs from the front, the back cavity and the spoke root groove of the wheel.

Abstract: A burnishing tool and a method of additively manufacturing components of the burnishing tool are provided. The burnishing tool includes a burnishing element for burnishing a workpiece. The burnishing element is positioned between an upper nozzle and a lower nozzle which are additively manufactured to define a plurality of internal fluid passageways for receiving, distributing, and discharging a burnishing fluid to facilitate cooling and/or lubrication of the burnishing element and/or the workpiece.

Abstract: Methods of forming at least a portion of an earth-boring tool include providing particulate matter including a hard material in a mold cavity, melting a metal and the hard material to form a molten composition comprising a eutectic or near-eutectic composition of the metal and the hard material, casting the molten composition to form the at least a portion of an earth-boring tool within the mold cavity, and providing an inoculant within the mold cavity. Methods of forming a roller cone of an earth-boring rotary drill bit include forming a molten composition, casting the molten composition within a mold cavity, solidifying the molten composition to form the roller cone, and controlling grain growth using an inoculant as the molten composition solidifies. Articles including components of earth-boring tools are fabricated using such methods.