Abstract: A mold construction system is presented for use in additive manufacturing of a metal object. The system comprises: at least one mold provision device controllably operable to form one or more mold regions defining one or more respective object regions in a production layer, and configured to receive molten metal deposited to each object region; and a control system operating each mold provision device in accordance with a predetermined building plan. The mold provision device, in accordance with said predetermined building plan, creates each mold region of each production layer with at least one metal-facing zone configured to define at least one cavity forming the object region to receive the molten metal therein. The metal-facing zone comprises a predetermined arrangement of spaced-apart sites of relatively weak mechanical properties relative to spaces between said sites within said mold material.

Abstract: A continuous caster to cast a metal product has a plurality of upper and lower segment frames bearing rolls, the upper and lower segment frames being located respectively above and below the cast metal product. At least one bending measurer is located on at least one of the upper segment frames and able to emit a bending measurement signal indicative of a bending of the at least one of the upper segment frames.

Abstract: A plunger rod for an injection device including a cylindrical sleeve has a distal end provided with a plunger chip configured to slide in the cylindrical sleeve. The plunger rod is configured to move forward and backward in the cylindrical sleeve. The plunger rod includes a support member. The support member is provided on an outer circumference of the plunger rod while being separated from the plunger chip, the support member being slidable with respect to the cylindrical sleeve in response to forward movement of the plunger rod. The support member has a semicircular ring shape, a C shape, or an annular shape. The support member supporting the plunger rod in the cylindrical sleeve.

Abstract: In a die-casting machine with toggle-joint or without toggle-joint, a threaded section or a shaped section of horizontal columns is made by first carrying out turning and then rolling.

Abstract: A sintering metal powder, in which a particle size distribution curve has a first peak having a maximum value at a particle diameter D1 [?m] and a second peak having a maximum value at a particle diameter D2 [?m] which is larger than the particle diameter D1, where the particle size distribution curve is drawn by measuring a volume-based particle size distribution of the sintering metal powder with a laser diffraction scattering particle size distribution measurement device, and plotting the particle size distribution on an orthogonal coordinate system in which a horizontal axis is a particle diameter and a vertical axis is a relative particle amount. The particle diameter D2 is 30.0 ?m or less, a height of the second peak is 0.60 or more and 3.00 or less when a height of the first peak is 1, and an average degree of circularity calculated from a captured image is 0.70 or more and 1.00 or less.

Abstract: The present invention provides a novel method for producing a structure comprising an assembly of metal-based particles. Provided is a method for producing a layered product, the layered product comprising a substrate having a three-dimensional surface; and a metal-based particle assembly layer arranged on the three-dimensional surface and comprising a plurality of metal-based particles arranged apart from each other, the method comprising the step of forming the metal-based particle assembly layer on the three-dimensional surface by immersing the substrate in a plating solution containing a cation of a metal constituting the metal-based particles to reduce the cation, wherein a VS/VL ratio of volume VS [cm3] of the substrate to volume VL [cm3] of the plating solution is 0.03 or less.

Abstract: The present invention relates to a method for manufacturing a basic metallic frame product used to produce a metallic frame as a part of an electronic product such as a smartphone, a smart key, a remote controller, and the like, and to a metal injection molded system including a metal injection molded product made with a mixture of metal powder and a binder and a support means for fixing the metal injection molded product to prevent the molded side wall from shrinking in the longitudinal direction thereof during a sintering process of the metal injection molded product. As the basic metallic frame product made using the system is provided, the metallic frame may be easily mass-produced, the production cost of the metallic frame may be lowered, and an amount of metal consumed for making the metallic frame may be reduced.

Abstract: A first pre-sintered body composed of a powder made of a first Ni-based alloy is prepared, and a second pre-sintered body composed of a powder made of a second Ni-based alloy is prepared. Subsequently, the first and second pre-sintered bodies are positioned to face each other across a predetermined gap, and a joining material made of a Ni-based alloy having a lower liquidus temperature than the first and second Ni-based alloys is placed in a space that adjoins the first and second pre-sintered bodies and to which the gap opens. After the placing of the joining material, the first and second pre-sintered bodies are heated to melt the joining material, fill the gap with the molten joining material, and subsequently turn the first and second pre-sintered bodies into first and second sintered bodies, respectively.

Abstract: A bonded structure is a structure in which two bonding target members and a bonding portion formed between and adjacent to the bonding target members are bonded together. The bonding portion is made of a material mainly containing copper. In a cross section of the bonded structure taken along a thickness direction, a ratio of a bonded rate between the bonding target members and the bonding portion in a peripheral region of the bonded structure to a bonded rate between the bonding target members and the bonding portion in a central region of the bonded structure is from 0.6 to 0.9. The bonded rate is 0.3 or more.

Abstract: A method includes applying a material coating to a surface of a machine component, wherein the material coating is formed from a combination of a hardfacing material, aluminum-containing particles, and a braze material. The method also includes thermally treating the material coating at a temperature to generate an oxide layer comprising aluminum from the aluminum-containing particles, wherein the oxide layer is configured to reduce oxidation of the hardfacing material, and the braze material is configured to facilitate binding between the material coating and the surface of the machine component.

Abstract: Precursor metal salts of at least two different metals can be loaded onto a substrate. The substrate can be heated at a heating rate to a first temperature, and then maintained at the first temperature for a first time. The first temperature can be in a range of 1000-3000 K, and the first time can be in a range of 1 ?s-10 s. After the first time, the substrate can be cooled from the first temperature at a cooling rate, such that a metallic glass material is formed on the substrate. The metallic glass material can comprise a homogeneous mixture of the at least two different metals and forming a single amorphous solid.

Abstract: Provided are a silver powder and a method of producing the same. The method of producing the silver powder includes a first surface smoothing step of causing fine silver particles having internal voids to mechanically collide with one another; a fine powder removal step of dispersing fine silver particles present after the first surface smoothing step using high-pressure airflow while removing fine powder; and a second surface smoothing step of causing fine silver particles present after the fine powder removal step to mechanically collide with one another.

Abstract: This metal paste for bonding includes a metal powder, a copper salt, an amine, and an alcohol, in which a ratio A/B of a weight A of Cu in the copper salt to a weight B of the metal powder is set to be in a range of 0.02 or more and 0.25 or less, the metal paste is in a paste form in a temperature range of 15° C. or higher and 35° C. or lower, a liquid phase is generated in a temperature raising process starting from 35° C., the liquid phase dissipates in the temperature raising process at a liquid phase generation temperature or higher, and a metal sintered body is formed at a liquid phase dissipation temperature or higher.

Abstract: There are provided a microwave irradiation apparatus and a production method of metal nanoparticles for producing the metal nanoparticles that allow efficiently preparing the metal nanoparticles having small and uniform particle sizes. The present disclosure relates to the microwave irradiation apparatus that includes two microwave irradiation sources, two waveguides, and one reaction portion. The two microwave irradiation sources are disposed such that respective microwave emission units thereof face one another. The two microwave irradiation sources, the two waveguides, and the one reaction portion are disposed such that respective microwaves emitted from the two microwave irradiation sources pass through the two waveguides and contact an entire surface of the one reaction portion. Furthermore, the reaction portion is adjusted to have a specific size.

Abstract: The present disclosure describes three-dimensional printing kits, three-dimensional printing systems, and methods of making three-dimensional printed objects. In one example, a three-dimensional printing kit can include a build material and a binding agent. The build material can include particles of copper or a copper alloy. The binding agent can include water, copper (II) nitrate or a hydrate thereof, and a reaction inhibition additive. The additive can be a copper oxide etchant, a water-soluble phosphate-containing compound, or a combination thereof.

Abstract: A method for manufacturing a part made up entirely or partially of at least one three-dimensional lattice is disclosed. The three-dimensional lattice is produced by additive manufacturing by successive depositions of different layers of additive manufacturing powder and selective consolidation of the layers of powder along at least one path comprising different manufacturing vectors, the three-dimensional lattice comprising at least two layers of parallel strands that are spaced apart from one another, the strands of one layer extending in a longitudinal direction different from the longitudinal direction in which the strands of another layer extend. The manufacturing method provides that each strand is consolidated only via a plurality of manufacturing vectors extending in the longitudinal direction in which the strand extends.

Abstract: There is provided an additive manufacturing process. An aluminum alloy is deposited layer by layer from powder or wire feedstock, the aluminum alloy comprising Si, Fe, Ti, 0.3-1 wt. % of Mn and 0.3-1 wt. % of Mg. A thermal consolidation is then performed to obtain a manufactured product.

Abstract: Techniques for determining characteristics of a stream of jetted material in a three-dimensional (3D) printer are disclosed. An example system includes an ejector configured to release molten droplets along a jetting path from the ejector to a build platform. The system also includes a sensor positioned adjacent to the jetting path and configured to generate an electrical signal in response to light emanating from the molten droplets. The system also includes an optical mask positioned adjacent to the jetting path, the optical mask comprising a plurality of regions configured to modulate the electrical signal generated by the sensor as the molten droplets travel along the jetting path. The system also includes one or more processing devices to receive the electrical signal, analyze the electrical signal to identify one or more characteristics of the molten droplets, and control the 3D printer based on the one or more characteristics.

Abstract: Systems, devices, and methods for improved manufacturing of parts are disclosed. One or more devices realize in situ laser shock peening for selective laser melting process to allow for microstructural control of a manufactured part, both locally and globally. The device can include a platform, an energy source (e.g., a laser), an applier to provide one or more opaque materials to form an opaque overlay, and one or more transparent materials that is/are disposed above the deposited opaque material to form a transparent overlay. The platform can include at least a first conduit used with generating a shock wave as part of the peening process and a second conduit to receive a vacuum device for residue collection from the peening process. The platform can be configured to translate relative to the sample on which the peening process is performed such that printing, peening and vacuuming can be performed substantially simultaneously.

Abstract: The problem of slow 3D printing using a beam-guided search (BGS) method is addressed by systems and methods that apply variable volume threshold ratio (VTR) values to a BGS method, to generate a plurality of subvolume groups and a plurality of clipping plane groups corresponding to a model of a 3D printed part or component. The plurality of subvolume groups and the plurality of clipping plane groups are presented to an operator of a 3D printing system, who can select the subvolume group and clipping plane associated with an optimal VTR value (for instance, based on experience and intuition), thereby obtaining a high-quality part or component while speeding up the 3D printing procedure.

Abstract: A method of manufacturing an (AM) component includes generating a computer-aided design (CAD) model of target AM component, and determining a target machining area on the target AM component. The target machining area is designated to receive a machining process. The method further comprises determining a witness line region corresponding to the target machining area of the component, and performing an AM component build to build the AM component and form a plurality of textured witness lines in the witness line region.

Abstract: A system and method for additive manufacturing are provided. The system for additive manufacturing can include a fabrication robot configured to perform a fabrication process within a pipe, and a support robot configured to support the fabrication robot. The fabrication process may include the fabrication robot depositing a material on the pipe, thus consuming material throughout the fabrication process. The support robot may traverse between an entrance of the pipe and the fabrication robot to obtain additional material and to refill the fabrication robot and the material is consumed. The support robot may further be configured to install and remove one or more tether management rings along bends within the pipe, such that the tether management rings can reduce drag caused by a tether of the fabrication robot.

Abstract: Techniques for determining characteristics of a stream of jetted material in a three-dimensional (3D) printer are disclosed. An example system includes an ejector configured to release molten droplets along a jetting path from the ejector to a build platform. The system also includes an optical sensor positioned adjacent to the jetting path and configured to generate an electrical signal in response to light emanating from the molten droplets. The system also includes an optical mask positioned adjacent to the jetting path. The optical mask includes light-blocking regions and light-passing regions to modulate the electrical signal generated by the optical sensor. The system also includes one or more processing devices to receive the electrical signal from the optical sensor, process the electrical signal to identify characteristics of the molten droplets, and control the 3D printer based on the characteristics. The characteristics include an estimated temperature of the molten droplets.

Abstract: Techniques for determining characteristics of a stream of jetted material in a three-dimensional (3D) printer are disclosed. An example 3D printer includes an ejector configured to release molten droplets along a jetting path from the ejector to a build platform. The 3D printer also includes a sensor positioned adjacent to the jetting path and an optical mask positioned adjacent to the jetting path. The optical mask includes a plurality of regions comprising light-blocking regions and light-passing regions. The optical mask is configured to modulate a signal generated by the sensor as the molten droplets travel along the jetting path. The 3D printer also includes a controller to control the 3D printer based on the signal.

Abstract: A turning method for a CNC lathe involves at least two machining steps, wherein a cutting element is re-arranged between the machining steps such that a nominal rake angle (?n) is changed. Thereby, the effective tool life may be increased and a high quality of the machined surfaces, and a stable cutting process, may be achieved even with a worn tool. A system and a computer program for performing the method is also provided.

Abstract: A metal drill includes a cutting section and a drive section pointing away therefrom. The metal drill has at least two different functional coatings are provided which are designed at least in regions and are designed to permit machining of a metallic workpiece adapted to a respective application material. The drive section has, at least in sections, a polygonal, preferably hexagonal cross-sectional geometry.

Abstract: A drill bit including a body, a shank, a cutting head, and an external covering. The body has a first end and a second end. The shank is located at the first end. The cutting head is located at the second end. The external covering is separately formed from the body and is located between the first end and the second end of the body. The external covering includes a sleeve. The sleeve has a sleeve body that radially surrounds a portion of the body and a plurality of flutes helically wrapped around the sleeve body.

Abstract: A blade change mechanism configured to attach a blade to a transmission rod of a power tool, the blade change mechanism including a support body, a blade retention structure, and a component. The blade retention structure is coupled to the support body and includes a blade retention component movable to hold the blade in a locked state in response to engagement of the blade with the blade change mechanism on insertion of the blade. The component is movable to vary the blade retention component to hold the blade in the locked state. The component is further movable to vary the blade retention component to an unlocked state in which the blade retention structure is disengaged from the blade. The blade retention structure is held in the unlocked state absent the blade being fully inserted into the blade change mechanism.

Abstract: A blade includes an attachment portion having a mounting aperture, the attachment portion configured to couple with an oscillating power tool, and a body extending from the attachment portion in a direction defining a longitudinal axis, the body including a distal end generally opposite the attachment portion. The distal end includes teeth. The body includes a toothed notch recessed from the distal end.

Abstract: The invention discloses an electrochemical mechanical polishing/planarization equipment for processing a polishing surface of a conductive wafer substrate, which includes a power supply; a polishing table with conductivity; a polishing pad including an insulating active layer and having holes where a conductive chemical liquid is accommodated; a polishing head having conductivity and being attached to the back of the polishing surface. The power supply, the polishing table, the chemical liquid, the conductive wafer substrate, and the polishing head in sequence form a conductive loop, and an electrochemical reaction layer is formed on the polishing surface of the conductive wafer substrate. The polishing head drives the wafer substrate to move relative to the polishing pad, and to implement a mechanical polishing or a chemical mechanical polishing of the electrochemical reaction layer.

Abstract: A guide pipe provided along a movement path of a wire electrode between a direction change pulley and a winding device and guiding the wire electrode has antistatic properties. A gas-liquid mixed fluid is supplied into the guide pipe. A suction nozzle passes between a pair of rollers of the winding device and is directly or indirectly connected to an outlet side of the guide pipe. The suction nozzle suctions the gas-liquid mixed fluid in the guide pipe and a tip of the wire electrode by a suction device and captures the wire electrode. The captured wire electrode is wound by the winding device.

Abstract: A quality determination device is applied to a component mounter including a pallet and a suction nozzle, and includes a first determination section. The pallet includes supply units on which a solder ball group to be supplied to a target region, that is at least a part of a mounting area of a component to be mounted on a board is mounted. The solder ball group being disposed in accordance with electrode positions of the component. The suction nozzle picks up and holds a target object that is a supply unit or a solder ball group mounted on the supply unit, and supplies the target object to the target region of a board. The first determination section determines quality of the solder ball group mounted on at least one supply unit among the multiple supply units arranged in the pallet before the suction nozzle picks up the target object.

Abstract: A method of forming a fused rail assembly in which one or more heating elements are positioned in a gap between first and second end faces of aligned first and second rails. The end faces are covered by a non-oxidizing atmosphere, and the heating elements are energized, to heat portions of the first and second rails to a predetermined hot working temperature. While one or more of the first end faces is moving transversely relative to center lines of the rails, and while the heated portions are at the predetermined hot working temperature, the first and second end faces are engaged with each other, to fuse together, forming the fused rail assembly. The transverse motion of the first end face or the second end face or both may commence before or after the first and second end faces are engaged.

Abstract: Provided are a gas-shielded arc welding method, a welded joint, and a method for producing the welded joint. In gas-shielded arc welding including one-side butt welding of steel plates in the present invention, a ceramic-made backing material is attached to a bottom surface of a groove, and root pass is performed in one pass using a welding current I of 200 to 450 A and a welding voltage V of 25 to 50 V while a welding heat input Q is controlled within the range defined by formula 1 below. 0.4× G?1 ?Q ?0.6× G+1 (formula 1) Here, G in formula 1 is a root gap (mm).

Abstract: A mobile hardbanding system that uses PTA welding to perform hardbanding on drill string sections at the well site. The inventive system allows alternate use of PTA and MIG welding. Both a PTA torch and a MIG torch are provided. Changing from one type of welding to the other is simplified by including separate electrical, gas, and cooling conduits for each torch. The torch not in use is parked in the welding compartment near the weld box. The powder hopper for the PTA welding assembly may be mounted on a swivel arm so that it can be moved out of the way when the MIG torch is in use.

Abstract: A system and a method of forming a wear surface of a wheel of a rail vehicle include depositing one or more alloy powders onto a main body of the wheel, and plasma transfer arc welding the one or more powders to form one or more alloy layers secured to the main body.

Abstract: A split-type multifunctional underwater arc welding power supply, comprising: including a shore power supply module and an underwater power supply module is provided. The shore power supply module comprises a shore power supply main circuit unit and a shore power supply control unit. The shore power supply main circuit unit comprises an input filter circuit, an IGBT full-bridge inverter circuit, an intermediate frequency transformer, and an output rectification filter circuit. The underwater power supply module comprises an underwater power supply main circuit unit and an underwater power supply control unit. The shore power supply module is provided on the shore, and the underwater power supply module is carried underwater.

Abstract: An example welding system includes: a visual acquisition system comprising an imaging device and configured to acquire a visual representation of a weld part and to convert the visual representation into data representative of weld part features; and a part recognition component comprising processing circuitry configured to: receive the digital data; identify one or more features of the weld part in response to receipt of the digital signal; compare the digital signal to stored data of a plurality of weld parts stored in a weld part database to match one or more identified features to a known weld part of the plurality of weld parts stored in the weld part database; identify weld settings stored in a weld parameter database associated with the matching known weld part of the plurality of weld parts stored in the weld part database; and send the weld settings to a welding power supply.

Abstract: An apparatus includes a housing, a pin, a mechanism, and a sensor. The housing is configured to receive a weld head. The pin is configured to move linearly relative to said housing. The mechanism is configured to convert a position of said pin into a displacement. The sensor is configured to generate a value representative of said position of said pin based on said displacement.

Abstract: A weld tip remover includes a cylindrical tubular case with an inclined guide groove formed therein along a circumference of a tube wall, a rotating plate axially rotatably mounted inside the cylindrical tubular case by a guide bar provided on an outer circumferential surface thereof and inserted into the inclined guide groove, and defining a tip receiving hole formed through an inner circumferential surface thereof, and a hinge bar having one end hinged to a translational actuator and a body portion hinged to one side of the rotating plate, and another end at which a driving jaw exposed to one side of an inner circumferential surface of the rotating plate is provided.

Abstract: In performing friction element welding of a sheet set constituted by two or more metal sheets, an element is press penetrated into the sheet set. The element may include a round columnar mandrel; a disc-shaped collar provided at an upper end face of the mandrel; and a conical pin extending from a lower end face of the mandrel. The element has a plurality of fluidized-metal discharge grooves arranged spirally in a flat area of the lower end face of the mandrel, the flat area excluding the pin. Alternatively, the element may include a round columnar mandrel having a lower end face that forms a conical face with an apical angle ?m, the conical face having one or more pairs of chippings discharge grooves or having a plurality of cutting edges, the chippings discharge grooves each extending in a curved manner from an apex of the conical face.

Abstract: Methods and systems for providing a cold plate assembly include providing a base and a cover. The cover can be fixedly coupled to the base. Each of the base and the cover can include spaced internal ribs, which can form flow paths when the base and cover are fixedly coupled together. The internal ribs of the base and the cover can have spaced tabs that can be fixedly coupled to the other of the base or the cover. The base and the cover may also include spaced external or outer sacrificial ribs.

Abstract: The invention relates to a measuring device for performing measurements on a workpiece, which are used to prepare and/or assess a weld seam produced by a welding device and having an initial portion and/or an end portion. The measuring device comprises a measuring unit comprising an optical coherence tomograph including a sample beam and sample, wherein the sample beam can be selectively focused on different measuring positions relative to a current machining position along the weld seam. The measuring device further comprises a fastening unit configured to attach at least the sample head to the welding device, and a control unit configured to dynamically adjust the leading beam and/or the trailing beam during machining along the weld seam. The invention further relates to a machining system, a method for performing measurements on a workpiece, and a method for machining a workpiece.

Abstract: A method for joining at least two parts by using ultrashort laser pulses of a laser beam of an ultrashort pulse laser is provided. At least one of the two parts to be joined is transparent for a wavelength of the ultrashort laser pulses. The method includes joining the at least two parts by using the ultrashort laser pulses of the laser beam along a joining seam. The joining seam has at least two joining points and a joining gap lying between the at least two joining points. Each joining point is longer than 10 ?m.

Abstract: A control device controls a scanning unit and a drive unit to scan laser light. In addition, the control device controls a focal point adjustment unit and a drive unit to adjust the focal position of the laser light. In a display mode in which a processing subject is irradiated with visible light, the control device controls the scanning unit and the drive unit to scan the visible light. The control device does not change an inter-lens distance of lenses of the focal point adjustment unit.

Abstract: According to one aspect of the present invention, it is possible to provide a tailor welded blank, a hot press formed part, and a method for manufacturing same, the tailor welded blank having a weld part that can effectively prevent deterioration of properties after hot press forming.

Abstract: A method for laser scoring a film comprising at least 90% polyolefin comprises scoring a moving web of the film by utilizing the peak pulse power of a laser at a frequency of about 20 kHz or less to create a scored film with a score feature comprising a series of non-overlapping scored spots. In another aspect, a laser scored film comprises at least 90% polyolefin; and a score feature comprising a series of laser-formed non-overlapping scored spots on the film having a cut size of between 0.15 mm and less than 0.5 mm, and a tie length between 0.15 mm and less than 0.5 mm.

Abstract: A manufacturing method of a gallium nitride (GaN) substrate includes a peeling layer forming step of forming a peeling layer at a depth, which corresponds to a thickness of the gallium nitride substrate to be manufactured, by relatively moving a GaN ingot and a focal point of a laser beam of a wavelength, which transmits through GaN, along a direction of a crystal orientation of the GaN ingot as represented by the below-described formula (1) with the focal point positioned inside the GaN ingot, and a peeling step of peeling the GaN substrate from the GaN ingot using the peeling layer as a start point. The peeling layer forming step is set such that the laser beam is split to form a plurality of focal points and straight lines connecting the individual split focal points each extend along a direction parallel to the direction of the crystal orientation represented by the below-described formula (1).

Abstract: Provided are a processing device, a detecting system, a processing method, a program, and a storage medium that obtain a position of a weld portion of a joined body with higher accuracy. A processing device according to an embodiment receives intensity data of a reflected wave obtained by transmitting an ultrasonic wave along a first direction toward a joined body. The device designates a weld portion of the joined body by using the intensity data. The device calculates a first center position of the weld portion in a first plane crossing the first direction.

Abstract: A clamping unit for a laser cutting machine for cutting a tubular component comprises: a clamping chuck, rotatable about an axis and for entraining the component in rotation; a rotary actuator, configured for setting the chuck in rotation; a plurality of clamping tools, each including a first end, connected to the clamping chuck, and a second, free end, opposite the first end along an axial direction parallel to the axis of rotation. The tools are movable towards and away from each other along a radial direction perpendicular to the axis between a rest position, and a working position, in which the tool engages the component. The unit comprises an actuator, configured for moving said tools between the rest and working positions. Each tool applies a clamping force on the component including at least one component along the axial direction, having a clamping sense towards the inside of the chuck.