Abstract: Systems and associated methods are provided for controlling the shape of an ingot head during formation. At the end of a cast, prior to forming the ingot head, chill bars or other cooling structure may be lowered into an ingot mold and define a reduced casting footprint for forming the ingot head. Supplemental molten metal may be fed into the reduced casting footprint, and the chill bars may be moved laterally towards the center of the ingot, further reducing the casting footprint. As additional molten metal fills the reduced mold footprint, the ingot may be lowered relative to the chill bars to further increase the height of the ingot head. Additional molten metal may be added until the desired shape of the ingot head is formed.

Abstract: A drip prevention device for a pressurized pouring furnace according to the present disclosure is a device 10 that prevents dripping of molten metal from a molten metal outlet of the pressurized pouring furnace The drip prevention device 10 includes: a stopper 20 that brings a lower end thereof into contact with the outlet so as to block the outlet, and is provided so as to be able to rotate about a central axis 20C of the stopper with no rotation angle limitation and move vertically above the outlet; a rotation motor 30 that rotates the stopper 20; a drip detection device 60 that detects dripping of molten metal from the outlet in a case where the dripping occurs; and a control device 70 that, in a case where a drip detection signal is received from the drip detection device 60, drives the rotation motor 30 to cause the stopper 20 to perform a predetermined rotation operation.

Abstract: The present disclosure provides a system for printing a three-dimensional object. The system may comprise a support for holding a portion of the object and a wire(s) source configured to hold a wire(s) of substantially the same or different diameters. The system may also comprise a print head. The print head may comprise a guide for directing the wire to the support. The system may also comprise a driver roller comprising a groove configured to contact a portion of the wire and direct the wire to the guide, and a power source in electrical communication with the wire and the support. The system may also comprise a controller configured to direct the power source to supply electrical current to the wire and the support. The electrical current may be sufficient to melt the wire when the wire is in contact with the support or the portion of the object.

Abstract: A metal particle, in which holes are distributed at the center, has a high degree of sphericity, a low shrinkage ratio, and small grains therein. In a preparation method for the metal particle, spherical or quasi-spherical metal seed crystals are introduced to prepare a polyol-seed crystal system, so that the metal particle has a controllable particle size and degree of sphericity in a whole reduction process, metal particles in a metal oxide or metal salt solution containing a metal source in the seed crystals can be rapidly and stably reduced, and the shape of formed metal particles is guaranteed to spherical or quasi-spherical; and the particle sizes of the metal particles can be adjusted by means of the number and the sizes of the introduced spherical nano-metal seed crystals. The metal particles are applied to a photovoltaic cell or a semiconductor conducive adhesive.

Abstract: The present disclosure provides a copper nanoparticle paste suitable for high-precision direct-writing 3D printing, and preparation and application thereof. A triaryl phosphine compound or trialkyl phosphine compound is adopted as a copper powder protective agent, and copper nanoparticles are prepared into oil-soluble paste containing epoxy resin; and thus, the problem that the copper nanoparticle paste is prone to be oxidized in preparation and storage processes is solved, and the electrical conductivity of the copper nanoparticle paste is improved, to ensure that the copper nanoparticle paste is suitable for the high-precision direct-writing 3D printing.

Abstract: Provided is a surface treatment method of metal powder and surface passivated metal powder. Herein, the surface treatment method uses passivation solution to treat the metal powder, to form a passivation film on the surface of the metal powder; the passivation solution passes through the metal powder by a flowing method; and the average particle size of the metal powder is 0.1˜100 ?m. A problem in the prior art that the metal powder is easily oxidized is solved, and it is suitable for the field of metal anti-oxidation.

Abstract: A composite powder comprising powder particles is disclosed. Each powder particle comprises a core element and a diffusion layer at least partially surrounding the core element. The core element comprises copper, gold or silver and an alloy element capable of forming a nitride, a carbide or a carbonitride. The diffusion layer comprises the alloy element and a nitride, carbide or carbonitride compound. The nitride, carbide or carbonitride compound comprises the alloy element.

Abstract: Disclosed is a Na containing oxide having a P2 type structure wherein O3 phase is reduced. A method for producing a Na containing oxide of the present disclosure comprises obtaining a precursor containing at least one element of Mn, Ni and Co, coating the surface of the precursor with a Na source to obtain a composite, and firing the composite to obtain the Na containing oxide having the P2 type structure, wherein the atmosphere in firing the composite contains 50% by volume or more of oxygen.

Abstract: A combination component with an additively manufactured (AM) component and a non-AM manufactured component and method of producing a combination component is described. The method includes joining the AM component with a non-AM component. The method further includes retaining the AM component, wherein the AM component has an AM component bonding portion and retaining the non-AM component, wherein the non-AM component has a non-AM component bonding portion that is configured to be bonded with the AM component bonding portion with a bond gap therebetween for absorbing dimensional variances in the AM component or the non-AM component.

Abstract: Embodiments are described for forming regions of varying porosity within an additive manufacturing (AM) object through selective deposition of a binding agent during fabrication. Upon sintering, the selectively applied binding agent forms stochastic regions of porosity within the object that are not externally visible. In some implementations, embedded porous regions are selectively generated to form an identifier region that can be used as a unique part identification tag identifiable through non-destructive evaluation. The identifier tag may be useful in anti-counterfeiting security for parts fabricated through binding agent jetting (BT) and other additive manufacturing techniques.

Abstract: A process for manufacturing which comprises the following steps: a) supplying an aluminium alloy particle powder, b) applying a layer of powder to a solid substrate or to an underlying powder layer, c) locally melting the applied powder layer by laser beam scanning, to form a molten bath comprising a first surface in contact with the substrate or the underlying powder layer, d) cooling the molten bath at a cooling rate Vr to solidify it, where zirconium has been added before step c), the zirconium representing at least 0.7% by mass, relative to the total mass of the aluminium alloy, and the cooling rate Vr at the start of solidification at the first surface of the molten bath being: —less than Vrmax=w*9.106-4.106 where w is the percentage by mass of zirconium, and—strictly greater than Vrmin=106 K/s.

Abstract: A powder for additive manufacturing, including, in wt. %, C<0.03; Ni 13.0-14.5; Co 12.0-14.0; Mo 7.0-8.0; Ti 0.05-1.00; and, as optionals Al 0-0.1; Cr 0.0-1.0; N 0-200 ppm; Si 0-0.10; Mn 0-0.10, and a balance of Fe and unavoidable impurities.

Abstract: An example feedback control system includes a laser powder bed fusion (L-PBF) platform including a laser. The L-BPF platform is configured to print a target object with the laser. The feedback control system includes a sensing system configured to measure an operative thermal emission index (TEI) emitted during print of the target object by the L-PBF platform. The feedback control system additionally includes a controller communicatively coupled to the sensing system. The feedback control signal is configured to determine an error based on a comparison between a control setpoint and the operative TEI, generate a control signal based on the error, and adaptively adjust a power of the laser during the print of the target object based on the control signal to maintain the control setpoint.

Abstract: A drying device includes a housing section and a drying section. The housing section is configured to house a powder bound object. The drying section is configured to dry the powder bound object housed in the housing section. The housing section includes a bottom. The bottom includes a periphery. The bottom includes an air vent inside of the periphery.

Abstract: A method for predicting a material property of a component made by additive manufacturing includes: defining an area of interest and generating a mesh in the area of interest; providing a temperature model during the additive manufacturing process; providing a process parameter set; calculating a thermal history in the area of interest based on the process parameter set using the temperature model; and determining a solidification gradient and a solidification front velocity in the area of interest from the thermal history.

Abstract: An additive manufacturing method and apparatus may implement a include a laser scanner with a movable-optic scanner including one or more optics, the movable-optic scanner configured move the one or more optics to scan the laser beam along a first path, and a solid-state scanner configured to scan the laser beam along a second path. The device may include a controller configured to control the laser scanner to operate the movable-optic scanner and the solid-state scanner to combine the first path and the second path to obtain a combined path during the additive manufacturing process.

Abstract: The present aspects include a recoater blade system. The recoater blade system includes a blade body with a longitudinal length between a first end and a second end, and a sensor device associated with the blade body. The sensor device is configured to receive inputs relating to characteristics of a powder bed. The inputs may include drag force of the blade body across the powder bed and impact force on the blade body, and these inputs may determine the spreading quality of the blade body and any surface defects that may be present.

Abstract: A lathe protective cover includes a mounting member and a cover unit. The mounting member has a main body including a mounting portion and a pivot portion, is configured to be detachably mounted on and configured to be movable relative to a cutter seat or a workpiece seat of a lathe. The cover unit includes a base plate pivotally connected to the pivot portion and having a through hole, and first and second side plates connected to two opposite sides of and cooperating with the base plate to define a shielding space communicating with the through hole. The cover unit is rotatable relative to the mounting member between a closed position, in which the mounting portion is adjacent to the through hole, and an open position, in which the shielding space and the through hole are away from the mounting portion.

Abstract: A tool includes a superhard part of a polycrystalline diamond (PCD) or a cubic boron nitride (cBN) sintered compact bonded to a cemented carbide substrate and a maraging steel part, where the cemented carbide substrate and the maraging steel part parts are joined by brazing. The present also relates to the making of such tool. The tool provides a strong braze joint and a steel part that have an even hardness.

Abstract: Provided is a diamond coating cutting tool in which the adhesiveness of a diamond layer to a base material is high. A diamond coating cutting tool 1 includes a base material 3 made of a silicon nitride sintered body or a sialon sintered body, and a diamond layer 7 coated on a surface of the base material 3. In the base material 3, an average thermal expansion coefficient x at 25° C. to 600° C. satisfies 2.6×10?6/K?x?4.0×10?6/K, and the diamond layer 7 has a compressive residual stress of 50 MPa or more and 1800 MPa or less.

Abstract: A cutting tool according to this invention includes a cutting edge configured to cut a workpiece; a rake surface configured to come in contact with a chip, which appears when the workpiece is cut by the cutting edge; and a relieved surface configured to come in contact with a to-be-cut surface of the workpiece. A plurality of first grooves are formed in the cutting edge side of the rake surface. A plurality of second grooves are formed in the cutting edge side of the relieved surface.

Abstract: A cutting system may include a tool and a stationary fixture. The tool may include a cam connected with a cutting insert. The stationary fixture may be spaced apart from the tool. The stationary fixture may include a moveable indexing pin moveable relative to the stationary fixture. The cam of the tool may be configured to be moved into contact with the moveable indexing pin of the stationary fixture, and the moveable indexing pin of the stationary fixture may be configured to cause the cam to rotate thereby indexing the cutting insert.

Abstract: The Overhead Drill and Anchor Press is a single mobile mechanism designed for installation of anchors into a construction surface which is overhead and out of reach of the installer. The overhead drill and anchor press may include a mast, a turret assembly, a controller, and at least one drill. The overhead drill and anchor press can execute the anchor installation sequence automatically or manually with a controller by moving the drill position to drill the hole and set the anchor. The controller may be equipped with a digital display of the turret mounted camera for monitoring the process from the ground. The entire assembly may be manually pushed between target.

Abstract: A gauge plate is configured to drill at least one accommodation hole in at least one size by using a square reamer. The gauge plate contains: at least one alignment orifice defined thereof and corresponding to the at least one size so as to accommodate the square reamer in the at least one accommodation hole. The gauge plate contains four L-shaped slots formed on four corners thereof, corresponding to the at least one alignment orifice, and configured to define the at least one size of the at least one accommodation hole. The gauge plate further contains multiple V-shaped notches defined on the four peripheral sides thereof and corresponding to the four alignment orifices and the four T-shaped slots, and a size value portion is configured to display three size values.

Abstract: A printing and drilling system for printing and drilling a target on a building surface that includes a supporting unit for supporting omni-directionally the printing and drilling unit, which has a number of laser position units for illuminating a working area containing the target, an imaging unit to capture images of the working area, a control unit to process the captured images, determine location coordinates of the target, and generate drilling data associated with the target, a laser generator for emitting a laser beam, a laser printing unit movable in x and y axes directions for emitting the laser beam to print the target, and a laser path reflector in the laser printing unit that can focus the laser beam in sequence for printing the target, and an electric drill unit movable from one position to another position for drilling an anchor hole on the laser-marked target.

Abstract: A drill bit for drilling a hard material includes a drill bit blade defining an axis of rotation and including a first side and a second side positioned respectively on first and second lateral sides of the axis of rotation. The drill bit blade further includes a blade tip point that is laterally biased relative to the axis of rotation, and a first blade edge and a second blade edge starting at the blade tip point and ending at the first side and second side, respectively. An angular bisector between the first and second blade edges is inclined at an angle relative to the axis of rotation.

Abstract: A hole-saw, including a sidewall and an endcap, is provided. The endcap includes projections that fit within notches of the sidewall to form a brazed or welded joint that couples the endcap to the cylindrical sidewall. The projections extend through the notches and are brazed or welded to the base of the sidewall. The endcap couples to the sidewall to form a cylindrical hole saw body. The endcap rotates and supports the hole-saw during operation.

Abstract: A connector system for coupling a drill to an input shaft for a trailer-mounted mechanism includes a drill attachment member is elongated from a drill end to an output end of the drill attachment member. The drill attachment member is configured to be clamped by a chuck of a drill adjacent to the drill end. The drill attachment member has a notch extending into the output end and extending transversely through the drill attachment member. An input shaft is engageable by the drill attachment member such that the input shaft is rotatable by the drill attachment member around a central axis of the input shaft.

Abstract: A deburring tool includes a nav. tool 9 in which a cutting tool 7 is inserted and fitted and that has an opening 41 exposing a blade portion of the cutting tool 7, opening edge portions 42 and 43 of the opening 41 each include a profiling guide portion 45 expanding, in the circumferential direction of the profiling guide member, in a sector shape that is centered on the center axis of the nav. tool 9, and the profiling guide portion 45 is formed to have a conical shape in side view.

Abstract: The invention relates to a method for machining plate-shaped workpieces (11), which are preferably made at least in part of wood, wood material, plastic, composite material or the like, by a machining device (10), the method comprising: positioning a plate-shaped workpiece (11) on a workpiece support (14), introducing at least one separating region (17) into the plate-shaped workpiece (11), positioning a machining tool (13) within the at least one separating region (17), performing a pivoting movement of the machining tool (13) in the direction of at least one narrow surface (18) of the plate-shaped workpiece (11), which is adjacent to the at least one separating region (17), wherein, as a result of the pivoting movement of the milling tool (13), a cutout (22) is introduced into the at least one narrow surface (18) of the plate-shaped workpiece (11), as well as a machining device (10) for machining plate-shaped workpieces (11).

Abstract: A powered tubing cutter includes a housing and a carriage rotatably supported by the housing. The carriage includes a cutting blade and a first rotational axis about which the carriage is rotatable. The powered tubing cutter also includes a brushless direct current (BLDC) motor for providing torque to the carriage to cause it to rotate. The motor defines a second rotational axis that is parallel to the first rotational axis.

Abstract: A power tool including a handle configured to be grasped by a user, the handle including a base material and an additive configured to distribute static electricity away from the handle. The handle has a first volume resistivity and a first surface resistivity. The base material has a second volume resistivity and a second surface resistivity. The additive causes the first volume resistivity and the first surface resistivity of the handle to be less than the second volume resistivity and the second surface resistivity of the base material, respectively.

Abstract: Power saws and features for power saws are disclosed. Various features are particularly relevant to jobsite or benchtop table saws. Such features include a frame or support structure with panels and shaped or bent tubes, a trunnion formed from a shaped tube, a tilt mechanism, an elevation mechanism, a retraction mechanism, an arbor block retention mechanism, an insert, a fence, dust collection, shrouding, and a fence stop.

Abstract: A ribbon saw with a double security system is provided that includes a cutting ribbon (3), vertically installed between an upper part (1a) and a lower part (1b) with driving mechanism and control electronics. The control electronics include a first artificial vision security system, with a camera (5) and a second magnetic artificial vision security system, with an inductive sensor or metal detector (6) installed on the table (4), in front of the cutting ribbon (3). The security system is connected to one or two braking systems (14,15) based on a disc (14) and a pneumatic clamp (15) that stops the mechanism of pulleys (12a, 12b) of the ribbon (3), when it detects the color and the metallic or ferrous material of the gloves that the operator wears.

Abstract: A cutting system may include a tool and a stationary fixture. The tool may include a cam connected with a cutting insert. The stationary fixture may be spaced apart from the tool. The stationary fixture may include a gear moveable within the stationary fixture. The cam of the tool may be configured to be moved into contact with the gear of the stationary fixture. The stationary fixture may be configured to index the cutting insert.

Abstract: A split thread die device is disclosed. The device is comprised of a first half and a second half that can be secured to each other around a damaged area of threads of a fastener. The device can then be turned to re-thread the damaged threads. In addition, a top surface of each half is comprised of an opening that extends to the inside surface of each half. The opening allows a cutting lubricant to easily flow from the top surface of each half and onto the threads of the fastener contacting the inside surfaces.

Abstract: The present disclosure provides a variable helical composite tap, which includes a drill bit segment and a tap segment sequentially arranged, where a helical angle of the drill bit segment is greater than a helical angle of the tap segment, and a core thickness of the tap segment is greater than a core thickness of the drill bit segment. The helical angle of the drill bit segment from a drill tip to a connection end of the tap segment with the drill bit segment increases continuously. The helical angle of the tap segment from the drill tip to a drill handle increases continuously, and preferably, the core thickness from the drill tip to the drill handle increases continuously. Compared with the prior arts, the drill bit segment of the present disclosure has a greater helical angle and a better chips removal effect is produced in the drill bit.

Abstract: An output control for a welding-type power supply includes a first contactor associated with a first weld output range. A second contactor associated with a second weld output range. An input device configured to select a weld output value from the first weld output range and the second weld output range. A control circuit configured to control the first contactor and the second contactor based on a selected weld output value, and adjust a weld output based on the selected weld output value of the input device.

Abstract: A welding apparatus includes a module for prompting a user to input a command indicating that a welding pressure between a movable electrode tip and a fixed electrode tip has reached each of two welding pressures, a module for identifying a torque exerted in the servo motor and a movement amount of the movable electrode tip at a point in time when the command is input, a module for deriving a relational expression between the welding pressure and the movement amount, a module for using the relational expression to estimate a movement amount of the movable electrode tip required to generate another welding pressure, and a module for identifying a torque required for the movable electrode tip to move the estimated movement amount, and registering the torque in association with the another welding pressure.

Abstract: Method for connecting components arranged on top of one another using friction stir welding. The components are clamped using a clamping device having an opening, and connected via a friction stir welding tool protruding through the opening and rotating about an axis. To connect the components, of which at least one has a small cross section, an upper component arranged on top of a lower component protrudes into the opening along an insertion direction through a groove on an underside of the clamping device and is fixed at least partially via the groove during the friction stir welding. Further, a composite component includes a lower component and an upper component which are connected using friction stir welding. Additionally, a device for connecting two components using friction stir welding, includes a friction stir welding tool that can be rotated about an axis and a clamping device having an opening.

Abstract: A laser processing machine includes a laser processing unit that irradiates a workpiece with a laser beam to carry out laser processing on the workpiece, a control unit that controls the laser processing unit in accordance with a processing condition under which the workpiece is processed, a beam detection unit that detects a beam from a processing portion of the workpiece irradiated with the laser beam, and a processing determination unit connected to the beam detection unit. The control unit controls the laser processing unit in a product processing mode for carrying out product processing of the workpiece and in a preliminary processing mode for carrying out preliminary processing of the workpiece prior to the product processing. The beam detection unit is capable of detecting a light intensity distribution of the beam in a predetermined wavelength band.

Abstract: A laser build-up welding method includes directing a powdered material and a laser beam onto a workpiece surface of a workpiece at an angle to one another. The powdered material is at least partially heated in an interaction zone with the laser beam above the workpiece surface and is welded onto the workpiece surface along a predefined contour, the laser beam has a wavelength that ranges between 0.4 ?m and 1.1 ?m. The laser beam within the interaction zone has an intensity in its border region that is greater than an intensity in the core region of the laser beam, so that the powdered material is subjected to the greater intensity of the border region when entering the interaction zone.

Abstract: The present disclosure provides a laser etching system for electrode layer patterning, which can perform electrode layer patterning on the conductive layer of a first surface of the substrate of a double-sided structure touch panel by means of employing a laser beam without damaging the conductive layer on the second surface of the substrate. The system comprises a laser emitter for generating and emitting laser beams, and a laser etching platform for supporting and fixing the touch panel substrate, with the first surface facing the laser beam and the second surface adhering to the laser etching platform. The laser etching system further comprises optical elements, which ensure that the ratio of the spot size of the laser beam irradiated on the second surface to that irradiated on the first surface is not less than 1.2.

Abstract: Method for processing an electrical conductor, in which a bare conductor end of a stranded conductor is provided, the strands of the bare conductor end are gripped at least partially circumferentially by gripping jaws, the strands are at least partially compacted in the region of the conductor end by the gripping jaws, and the compacted strands are welded to one another with the aid of a laser beam source in the region of the gripping jaws, through the gripping jaws.

Abstract: A laser machining method is a laser machining method for joining a first member containing a first metal and a second member containing a second metal different from the first metal, the method including a first step of forming a joint in which the first metal and the second metal are melted by performing scanning with a first laser beam, and a second step of stirring a metal structure near the joint by performing scanning, on a rear side in a scanning direction of the first laser beam, with a second laser beam having a beam diameter larger than a bean diameter of the first laser beam and having a lower power density than a power density of the first laser beam.

Abstract: Disclosed herein are systems and methods for three-dimensional (3-D) printing a build piece in which a laser beam source generates a laser beam for melting a material at a build plate. Additionally, the systems and methods herein include a directed acoustic energy exciter (DAEE) configured to generate an acoustic energy. A controller can be configured to direct the laser beam at a first location to melt the material into a melt pool to form a portion of a build piece and configured to direct the DAEE to transmit the acoustic energy to the first location.

Abstract: Disclosed embodiments include laser cutting tools. Some laser cutting tool embodiments include (i) at least one laser source configured to generate at least one laser beam having sufficient power to cut material, (ii) one or more processors, and (iii) tangible, non-transitory computer-readable memory comprising program instructions executable by the one or more processors to cause the laser cutting tool to perform laser cutting tool functions. In some embodiments, the functions include causing a cutting path to be projected onto a surface of a material, and controlling the at least one laser source to apply the at least one laser beam onto the material sufficient to implement a cut along the cutting path projected onto the surface of the material.

Abstract: A metal paste for bonding includes metal particles, a dispersion medium, a reducing agent, and a reduction aid, in which the metal particles contain copper particles, the reduction aid includes a coordinating compound having electron back-donation properties, the coordinating compound is at least one selected from the group consisting of an organic phosphorus compound and an organic sulfur compound, and the metal paste for bonding contains, as a reducing agent, 1.6 parts by mass or more and 10 parts by mass or less of a polyol-based compound with respect to 100 parts by mass of the total mass of the copper particles.

Abstract: A flux-cored wire for gas-shielded arc welding in which a steel sheath is filled with flux and the flux-cored wire contains Fe, C, Mn, Cr, Ni, Mo, Nb, V, P, and S within controlled amounts, and further contains, with respect to the total mass of the wire, TiO2: 3.0 mass % or more and 9.0 mass % or less, a SiO2 conversion value of metal Si and a Si compound: 0.5 mass % or more and 1.5 mass % or less, Co: 0.10 mass % or more and 1.50 mass % or less, N: 0.015 mass % or more and 0.060 mass % or less, Li: 0.11 mass % or less, Mg: 0.85 mass % or less, and a total amount of K and Na: 0.3 mass % or less.

Abstract: A fitting holder designed for receiving a branch pipe during a welding operation in order to attach the branch pipe to a pipeline or a pipe, wherein differently dimensioned branch pipes can be received by the fitting holder, comprising a hollow-cylindrical housing with an upper region which, during the welding, faces away from the pipeline to be welded thereto, and a lower region which, during the welding, faces the pipeline to be welded thereto, wherein mounts for the axial fixing of the branch pipe which can be received by the fitting holder are arranged in the lower region, a ring arranged displaceably in the housing, and clamping elements pressing the ring downwards, wherein the fitting holder has different guide inside diameters which guide the differently dimensioned branch pipes by way of their differently dimensioned outside diameters in the fitting holder.