Abstract: A method for manufacturing a metal plate member includes stacking first and second metal plates with a resin adhesive interposed between the first and second metal plates, subjecting the stacked first and second metal plates to press forming, and curing the resin adhesive after the press forming.

Abstract: The present invention is directed to a dual sided incremental sheet forming apparatus and method for incrementally forming sheet materials such as sheet metal by utilizing opposed primary and secondary forming tool assemblies and a sheet feeding assembly. The primary forming tool assembly includes a rigid tool and the secondary forming tool assembly includes a compressible and resilient backing layer having either a cylindrical or flat configuration. The sheet feeding assembly positions the sheet material between the two forming tools. The rigid tool applies force to one surface of the sheet material while the resilient backing tool applies counter force to the opposite surface of the work piece as it supports the work piece. This dual sided process localizes the forces on the sheet material so that stresses are advantageously controlled to produce accurately formed asymmetric shapes, without the need for expensive dies.

Abstract: Disclosed is a hot-pressed member that can exhibit very high tensile strength after hot pressing of 1780 MPa or more, excellent delayed fracture resistance, and high cross tensile strength after resistance spot welding by properly adjusting its chemical composition and its microstructure such that a prior austenite average grain size is 8 ?m or less, a volume fraction of martensite is 90% or more, and at least 10 cementite grains having a grain size of 0.05 ?m or more are present on average per 200 ?m2 of a cross section parallel to a thickness direction of the member, and such that at least 10 Ti-based precipitates having a grain size of less than 0.10 ?m are present on average per 100 ?m2 of the cross section parallel to the thickness direction of the member in a range of 100 ?m in the thickness direction from a surface of the member.

Abstract: Fine blanking system comprising one or more movable parts, further comprising at least one first drive of a first drive type and at least one second drive of a second drive type different from the first drive type for driving at least one of the movable parts, wherein the first drive and the second drive are arranged to drive the same movable part.

Abstract: The present invention teaches a process of measuring and grinding tools in can/cylindrical body production, allowing reduced production downtime, reduced cost and a predictive tool wear capability, which process allows more accurate stocking of tool inventory by means of tracking individual tools in use and providing advanced diagnostics to the tool room. This includes not just out-of-spec alarms from QA but also predictive alarms regarding cans produced by each tool, in-spec can weights and wall thicknesses, information on tool sizes being used in production, tools in inventory, pulled from inventory and other stock balancing information. The invention further teaches a system of equations for prioritizing grinding to maintain optimum tool inventory levels.

Abstract: Disclosed herein is a tool for cutting or crimping a tensioned cable in a medical procedure. The tool comprises a cable forming assembly that is coupled with an inner shaft. The cable forming assembly comprises a cable former. The tool additionally comprises a central channel, which extends through the inner shaft, an outer tube within which the inner shaft is positioned, and the cable forming assembly along an entire length of each one of the inner shaft, the outer tube, and the cable forming assembly. The central channel is configured to receive and support the tensioned cable in-line with the tool. The cable former is actuatable to cut or crimp the tensioned cable when the tensioned cable passes through the central channel. Translational movement of the outer tube along the inner shaft in an engagement direction actuates the cable former to cut or crimp the tensioned cable.

Abstract: An apparatus for advancing and supplying bars to a machine tool, comprises: a plurality of tubular elements each suitable for containing longitudinally a respective bar; at least one first carriage unit and a second carriage unit supporting the tubular elements and movable longitudinally on a drum structure to move the tubular elements parallel to an advancement direction for the bars; the drum structure extends from a front end, suitable for being placed in a position adjacent to a spindle of the machine tool, to a rear end, suitable for being further from the machine tool. Each tubular element is provided with a feed finger unit that is suitable for clamping and pulling a respective bar to advance the bar advancement direction.

Abstract: A fin manufacturing apparatus includes: a progressive pressing device that forms, by forming in a metal plate having thermal conductivity a plurality of openings for tube-insertion and a plurality of slits while leaving uncut portions, strips that each have openings along a longitudinal direction of the strip and are partially coupled to each other in a width direction; an inter-row cutting device that separates, by cutting the portions via which the strips are coupled to each other, the strips such that each strip has a width of the fin; a cutoff device that cuts the separated strips to a predetermined length; and a guiding device between the inter-row cutting device and an inter-row slit device that guides and supplies, to the inter-row cutting device, the strips that are partially coupled to each other in the width direction, are arranged in the width direction, and are conveyed in the longitudinal direction.

Abstract: A mold (1) according to an embodiment of the present invention is a mold which is formed by additive manufacturing. The mold includes: a heat medium channel (10) for a heat medium to flow through, the heat medium channel being provided inside the mold; a medium introduction port (4) at which the heat medium is to be introduced into the mold; a medium discharge port (5) at which the heat medium is to be discharged out of the mold; and a buffer layer (20) located between a mold surface (1a) and the heat medium channel. The buffer layer includes a low-melting percentage portion (21) having a lower melting percentage than does any portion inside the mold other than the buffer layer.

Abstract: A method of casting a casting product having tubular flow passages includes: attaching a cast-in pipe insert, having outer and inner fixing members to which both ends of pipes are coupled, respectively, to a fixed mold; assembling a movable mold with the fixed mold; injecting a molten metal into a cavity defined inside the fixed and movable molds; ejecting a casting product from the assembled molds after injecting the molten metal; and removing the outer and inner fixing members from the casting product.

Abstract: The present disclosure relates to a mold improved to tune the position of an insert pin for forming a hole in a molded article. The mold includes a core forming a cavity corresponding to a molded article, a forming plate accommodating the core, and an insert pin configured to penetrate the forming plate and the core in a first direction to form a hole in the molded article inside the cavity and be movable along the first direction.

Abstract: A Fe—Co alloy powder has a small particle diameter, can achieve high ?? in a high frequency band, and has high heat resistance. The Fe—Co alloy powder can be obtained in such a manner that an acidic aqueous solution containing a trivalent Fe ion and a Co ion is neutralized with an alkali aqueous solution in the presence of a phosphorus-containing ion. This provides a slurry of a precipitate of a hydrated oxide. Then, a silane compound is added to the slurry to coat the precipitate of the hydrated oxide with a hydrolyzate of the silane compound. The precipitate of the hydrated oxide after coating is recovered through solid-liquid separation. The recovered precipitate is heated to provide iron particles coated with a silicon oxide, and then the silicon oxide coating is removed through dissolution.

Abstract: Powder alloy compositions and associated additive manufacturing techniques are described herein for production of sintered articles with microstructure and/or enhanced wear and corrosion resistance. In some embodiments, an article comprises sintered cobalt-based alloy having chromium carbide precipitates dispersed therein, the chromium carbide precipitates having an average size less than 4 ?m.

Abstract: A method includes powder forging and machining a workpiece that is fractured to divide the workpiece into separate components. In a green form in which the workpiece is formed of compacted powdered metal and has a body that is generally shaped as a parallelepiped with a pair of end faces. The body defines a bore, a pair of V-notches and a pair of channels. The V-notches are formed into the bore parallel to the central axis of the bore and cooperate to define a separation plane. Each of the channels is formed in an associated one of the end faces at a location where the separation plane intersects the end face. During forging, the channels are closed but create a stress riser that aids in directing the fracture when the components are separated from one another.

Abstract: A method of producing silver nanoparticles includes reducing, with a silver ion reducing agent, silver ions of 40 mM or more in a reaction solution in the presence of a particle protective agent and an element more noble than silver.

Abstract: A method for machining the wheel running surfaces of wheels for rail vehicles using a wheel machining machine is described herein. The method includes performing a rolling process on the wheels with a rolling tool that applies a rolling force to the wheels, and adjusting the rolling force by controlling the torques of drive motors of feed axles of the rolling tool.

Abstract: A cutting insert may include a first surface, a second surface and a third surface. The first surface may include a corner having a convex curvilinear shape and an inclined surface. The inclined surface may include a first inclined surface, a second inclined surface and a third inclined surface. The first inclined surface may be inclined at a first angle. The second inclined surface may be inclined at a second angle. The third inclined surface may be inclined at a third angle. The first inclined surface may have a concave curvilinear shape in a cross section orthogonal to a bisector of the corner. The second inclined surface may be a flat surface. The second angle may be smaller than either of the first angle and the third angle in a cross section which includes the bisector and is orthogonal to the reference plane.

Abstract: A drill may be extended from a first end to a second end and may include a cutting part. The cutting part may include a cutting edge, a flute, an end surface and a connection surface. The flute may be extended from the cutting edge toward the second end. The end surface may be located closer to the second end than the flute. The connection surface may be located between the flute and the end surface. The connection surface may include a first portion, and a second portion located closer to an outer periphery of the cutting part than the first portion. A length in the direction along the rotation axis on the second portion may be smaller than a length in the direction along the rotation axis on the first portion in a side view orthogonal to the rotation axis.

Abstract: A drill bit (100) having a longitudinal axis (101) and to be rotated about the axis (101) in a drilling direction (102) to perform a drilling operation. The drill bit (100) comprises a body (120) having a longitudinal length with a proximal end (121) and a distal end (122). The body (120) has a diameter. A tapered tip (110) extends from the proximal end (121) and terminates in an apex (111) at an end of the drill bit (100). The drill bit (100) also comprises a plurality of flutes (140) with each flute (140) extending helically along the body (120) into the tip (110). The drill bit (100) also comprises a land (150) between each of the flutes (140) and extends to the tip (110). The drill bit (100) also comprises a plurality of tip faces (190) on the tip (110) and extends from a corresponding land (150) to the apex (111), where each of the tip faces (190) has a tip face leading edge (173) and a tip face trailing edge (174).

Abstract: In an end mill, eight peripheral cutting edges having a helical shape and g a larger outer diameter than that of a shaft portion are in a cutting portion in a circumferential direction. For one peripheral cutting edge of the eight peripheral cutting edges, when a cut length of the peripheral cutting edge along an axial direction is L, a twist angle of the peripheral cutting edge is ?, and a circumferential distance at a lower end of the peripheral cutting edge between the peripheral cutting edge and another peripheral cutting edge adjacent to a tool rotation direction rear side of the peripheral cutting edge is a, n expressed by the following equation is approximately 1 for all of the eight peripheral cutting edges in at least a half region of the cut length from the lower end of the peripheral cutting edge.

Abstract: Improvements in tooling for machining systems that utilize machining fluids comprising a supercritical fluid are disclosed. In some embodiments a tool may include a plurality of orifices configured to direct a supercritical machining fluid towards a cutting interface of the tool. In other embodiments, a tool holder may include one or more outlets configured to direct a supercritical machining fluid towards a cutting interface. Moreover, some embodiments, may relate to machining systems including one or more venting channels configured to provide pressure relief for a cavity located behind a tool holder. Embodiments related to machine tools including upstream fluid restrictions for controlling a flow of supercritical machining fluid through a tool are also disclosed.

Abstract: A jig saw including a clamping mechanism for removably clamping a saw blade and a driving mechanism. The clamping mechanism includes an actuating member and a clamping mechanism, the actuating member is configured to rotate about a first axis, thereby driving the clamping mechanism to achieve locking or unlocking of the saw blade. The actuating member includes an inclined surface extending in a rotation direction of the actuating member. The inclined surface cooperates with the clamping mechanism thereby to drive the clamping mechanism when the actuating member rotates. Since the clamping mechanism of the jig saw uses a clamping mechanism to apply pressure to the saw blade from the side, thereby abutting and fixing it on the main body, such a clamping mechanism therefore can be applied to different types of saw blades, regardless of the shape of the end faces of their clamping ends (e.g., V-shaped or U-shaped).

Abstract: A method for producing gears, wherein in a first step a set of teeth is formed by means of a skiving wheel rotationally driven by a tool spindle in a workpiece gear rotationally driven synchronously thereto by a workpiece spindle, wherein the workpiece spindle and the tool spindle are at an axis intersection angle to each other and the advancement occurs in the tooth-flank extension direction, and wherein in a second step at least some teeth of the set of teeth are machined by means of a tooth-machining tool. A combined tool is used, in the case of which the toothmachining tool and the skiving wheel are fixedly connected to each other. Between the two steps, the combined tool remains connected to the tool spindle and the workpiece gear remains connected to the workpiece spindle. Between the two steps, merely the relative position of the tool spindle in relation to the workpiece spindle and the rotational speed ratio of the two spindles are changed.

Abstract: A vibration assisted wire machining device is provided, the vibration assisted wire machining device allows a metal wire to be driven by a bi-axial sinusoidal vibration source during a wire machining process, wherein the bi-axial sinusoidal waveforms have the same amplitude, and preferably, the bi-axial sinusoidal waveforms are synchronous and always have a vibration phase difference of 90 degrees. Therefore, the present invention can reduce wire breakage risks and improve wire-cutting efficiency, and raise machining stability and material removal rate of a wire-electrical discharge machining (Wire-EDM) process performed on a workpiece, as well as achieve desirable precision of a geometric shape. It also relates to a vibration assisted wire machining device that enables metal wires associated with the abrasive slurry formed of hard abrasive grains, for performing bi-axial vibration assisted abrasive cutting or abrasive grinding on the workpiece.

Abstract: A wire electrical discharge machine includes: a drive controller configured to periodically apply voltage pulses between a workpiece and a wire electrode while relatively moving the wire electrode relative to the workpiece according to a machining program and a machining condition; a code analyzer configured to analyze the presence or absence of a condition change code for changing the machining condition in the machining program; and a condition changer configured to change the machining condition in accordance with a ratio indicated in the condition change code when the condition change code is present.

Abstract: A process for joining first and second metal workpieces by laser brazing for forming a vehicle structure includes providing the workpieces in contacting relationship so as to form an elongated contact region, wherein at least one of the workpieces is made of hot-dip galvanized steel material, supplying a laser beam having a beam parameter product lower than 10 mm·mrad from a laser source, guiding the laser beam through a laser focus head having a total optical magnification in the range of 1:0.5-1:1.5, directing the laser beam along the elongated contact region, wherein a beam spot formed where the laser beam hits the contact region has a size in the range of 2-6 mm, and supplying a consumable wire of filler material to the beam spot to melt the consumable wire and braze the workpieces together, wherein the consumable wire comprises at least 95% copper.

Abstract: An apparatus for soldering a terminal to which a solder alloy is attached on window glass for a vehicle, includes a terminal to which the solder alloy is attached; a coil unit including a coil which generates induction heat; a gripper which grips and releases the terminal and is configured to be movable upward and downward relative to the coil unit in a state of gripping the terminal; and a ferrite core unit including a ferrite core which is configured to be surrounded by the coil unit to receive the induction heat, and is configured to be movable upward and downward relative to the coil unit, wherein the solder alloy attached to the terminal, in a state of being in contact with the window glass, is melted by the induction heat from the coil unit and the ferrite core unit such that the terminal is attached to the window glass.

Abstract: The present invention pertains to: a method for arc spot welding a steel plate having a carbon equivalent CeqBM of 0.35 or more (the carbon equivalent CeqBM is defined in the specification), the method being characterized in that a welding wire containing 98.5 mass % or more of Fe is used, and the ratio between the carbon equivalent CeqWM of a weld metal formed by the method (the carbon equivalent CeqWM of the weld metal is defined in the specification) and the carbon equivalent CeqBM of the steel plate, CeqWM/CeqBM is 0.2-1.0. According to the arc spot welding method, brittle fracture can be prevented and high joint strength can be obtained even when the C content in the steel plate is high.

Abstract: A method for monitoring a spatter generating event during a welding application. The method includes capturing data that corresponds to a welding current of the welding application. The method also includes detecting parameters associated with a short circuit from the captured data. The method includes analyzing the detected parameters to monitor the spatter generating event during the welding application.

Abstract: A welding system includes a welding torch assembly including a body, a first feed roll, a second feed roll, and a lever. The first and second feed rolls are both configured to rotate with respect to the body, and the first and second feed rolls are disposed opposite from one another about a welding wire feed region. The lever is configured to pivot at a first end of the lever about a lever joint of the body, and the second feed roll is movable between a first position and a second position in response to movement of a second end of the lever. The second feed roll is adjacent to the first feed roll in the first position, the second feed roll is not adjacent to the first feed roll in the second position, and the lever is configured to maintain the feed roll in the second position.

Abstract: A method for welding a welded part to a component is carried out as arc ignition welding by use of direct current, having a bias current phase in which an arc is formed between the negatively polarized welded part and the component, and a subsequent main current phase for melting material to the joint. The welded part: a) is a galvanized sphere made of C10C having a roundness G500, wherein the size of any zinc inclusions under the surface of the sphere equals 10 micrometers at maximum, orb) is formed by welding a galvanized sphere made of C10C having a roundness G500, wherein the size of any zinc inclusions under the surface of the sphere equals 10 micrometers at maximum, to a connection element.

Abstract: Methods are disclosed for forming metal workpieces made from a heat-treatable metal that has been shaped and tempered according to specified protocols that facilitate formation of large contoured unitary metal structures having welds that are retained in the finished structure, and finished metal structures made according to such methods.

Abstract: A method for manufacturing a liquid-cooling jacket (1) where heat transfer fluid flows in a hollow part (14) defined by a jacket body (2) and a sealing body (3) includes: an overlapping process in which the sealing body (3) is placed on an end surface (11a) of a peripheral wall part (11) in such a way that the end surface (11a) and a back surface of the sealing body (3) are overlapped each other to form a first overlapped part (H1); and a primary joining process in which primary joining is performed by friction stirring in such a way that a rotary tool (FD) is moved once around a recessed part (13) along the first overlapped part (H1).

Abstract: Provided is a method for manufacturing a liquid cooling jacket including a jacket body and a sealing body joined to the jacket body. The method includes steps of: preparing; placing; first primary joining with a rotary tool; and second primary joining with the rotary tool. A rotary tool includes a base end pin and a distal end pin. The distal end pin includes a flat surface and a protrusion extending from the flat surface. In the first primary joining and the second primary joining, friction stirring is performed in a state where a front surface of the sealing body is brought in contact with an outer peripheral surface of the base end pin, the sealing body is brought in contact with the flat surface of the distal end pin, and the jacket body is brought in contact with the protrusion.

Abstract: The invention relates to a device and a method for changing the welding direction of the welding shoulder of a system for a friction stir welding process virtually without delay when required by the geometric arrangement of the joint partners to be welded or by a material unevenness, having the following method features: a) a main part (1) with a horizontally movable bridge support (5) has a friction welding head (12) which can be vertically adjusted together therewith and which has a pin receiving area (13) for mounting and driving a welding pin tip (14), wherein the welding shoulder (18) has a welding shoulder receiving area (17) which is supported at multiple points, and b) the welding shoulder receiving area (17) can be adjusted to any angle of attack relative to the joint partners by means of different push-pull rods (16) during the welding process.

Abstract: A processing apparatus has: a light irradiation apparatus that irradiates a surface of an object with a processing light; and a measurement apparatus that measures a position of an irradiation area, which is formed on the surface of the object by the light irradiation apparatus, relative to the object.

Abstract: A device for a laser working system includes at least one optical element, which is arranged in a beam path of the device, and one temperature detector assembly having a matrix of detector elements. The temperature detector assembly is design to measure a two-dimensional temperature distribution of the optical element.

Abstract: A system and a method for measuring the focus position of high-power laser are disclosed. The system includes a micro-controller, a stepping motor driver, an electric lifting platform, an electric rotation platform, a metal target, a displacement sensor, a photoelectric sensor and an ADC module. The system uses a laser to irradiate the metal target, which is moved upward and downward, to obtain the best ablation point through the ultraviolet radiation emitted on it.

Abstract: A laser processing method is disclosed which is capable of easily reducing contamination on a plastic film surface, and also capable of cutting a plastic film in a free-form shape. A laser processing method includes a process of pulsing a laser beam L having a wavelength in the infrared region from a laser beam source 1 and causing a plastic film F to be irradiated with the laser beam L to cut the plastic film. The peak energy density of the laser beam with which the plastic film is irradiated is 70 J/cm2 or more and 270 J/cm2 or less.

Abstract: A distributor plate for a fluid treatment tank such as a water softener pressure vessel separates the resin bed from a lower end of the resin tank. The outer peripheral surface of the distributor plate is laser-welded to an inner peripheral surface of the tank. The outer peripheral surface of the distributor plate may have a biasing mechanism that biases the outer peripheral surface of the distributor plate against the inner peripheral surface of the tank. The biasing mechanism may include a plurality of peripherally-spaced resilient fingers extending axially and radially away from a circular base of an outer ring of the distributor plate into engagement with the inner peripheral surface of the tank liner, each of the fingers having a base connected to the base of the ring and having a free end. Also disclosed is a method of making a fluid treatment tank.

Abstract: A three-dimensional printing system for manufacturing a three-dimensional article includes a build chamber, a carrier plate, a vertical positioning apparatus, a laser system, a sensor, a powder dispenser, and a controller. The carrier plate defines a receptacle and an alignment target. The receptacle is for receiving and aligning a prefabricated body. The alignment target is in precise lateral alignment with respect to the receptacle. The controller is configured to: (1) operate the laser system to generate and scan a radiation beam over an upper surface of the carrier plate; (2) concurrent with scanning the radiation beam, receive a signal from the sensor; (3) analyze the signal to align the radiation beam to the prefabricated body; and (4) operate the vertical positioning apparatus, the laser system, and the powder dispenser to selectively form layers of metal over the prefabricated body to complete manufacture of the three-dimensional article.

Abstract: A method for micro-fabricating a device on a substrate (20), comprising the steps of providing a cavity (31) having a temporary aperture (35) communicating with the outside; providing a sealing structure (45) adjacent to a perimeter of the temporary aperture (35); applying heat to the sealing structure (45), whereby the sealing structure melts and seals the temporary aperture (35).

Abstract: A method is disclosed for dividing a composite material in which a brittle material layer and a resin layer are laminated, including radiating a laser light oscillated from a CO2 laser source to the resin layer along the scheduled dividing line of the composite material and thereby forming a processed groove along the scheduled dividing line; radiating a laser light oscillated from an ultrashort pulse laser source to the brittle material layer along the scheduled dividing line and thereby forming a processing mark along the scheduled dividing line; and dividing the composite material by applying an external force along the scheduled dividing line. The method is characterized in that the processing mark to be formed is perforated through holes along the scheduled dividing line, and the pitch of the through holes is 10 ?m or less.

Abstract: A display panel cutting apparatus including: a stage, wherein a display panel is disposed on the stage, and the display panel includes a display area, a non-display area, and a test pad portion; an air knife disposed on the stage; an upper supporting member overlapping the test pad portion; and a laser that cuts the test pad portion from the display panel, wherein the upper supporting member is separated from an upper surface of the test pad portion.

Abstract: The invention relates to an elongate profile extending in a longitudinal direction and having a first end and a second end, wherein between the first end and the second end the profile has at least one cutting line forming a cutting pattern for at least one profile section to be removed from the profile, wherein after removal of the at least one profile section from the profile the first end of the profile is bendable towards the second end of the profile and/or vice versa.

Abstract: The present invention discloses that a multi-laser cutting method and system, which is applied to a substrate to form a primary substrate having a pattern of rounded corners and a line, the throughput could be improved because CO2 laser cannot cut the round corner at the high speed, but the substrate strength could be kept due to the high cutting quality of the lines by CO2 laser. The poor quality of the cutting edges of the round corners will not affect on the substrate strength but the round corner cutting by the second laser unit will speed up the cutting process. The present invention applies the method by the 2 different laser machines to balance the throughput. Because at the same speed, for example 150 mm/sec, the cycle time per 1 substrate will be different due to the different length of the cutting lines.

Abstract: An electric component manufacturing device includes a preheater that contacts and preheats a transported work, a melting heater that is downstream of the preheater in a transport direction of the work and contacts and heats the work at a temperature which is higher than a temperature of the preheater and at which a solder melts, a cooler that is downstream of the melting heater in the transport direction and contacts and cools the work, and a transporter that supports and transports the work to sequentially contact the preheater, the melting heater, and the cooler in this order. The transporter performs intermittent transport in which the work is transported from the preheater to the melting heater without stopping to contact both the preheater and the melting heater at the same time, and then the work stops on the melting heater.

Abstract: Implementations of the disclosure are directed to a lead-free mixed solder powder paste suitable for low temperature to middle temperature soldering applications. The lead-free solder paste may consist of: an amount of a first solder alloy powder between 44 wt % and 83 wt %, the first solder alloy powder comprising Sn; an amount of a second solder alloy powder between 5 wt % to 44 wt %, the second alloy powder comprising Sn, where the first solder alloy powder has a liquidus temperature lower than a solidus temperature of the second solder alloy powder; and a remainder of flux. The solder paste may be used for reflow at a peak temperature below the solidus temperature of the higher solidus temperature solder powder but above the melting temperature of the lower solidus temperature one.

Abstract: Aluminum welding alloys with improved welding performance are disclosed. The aluminum welding alloys include high loading levels of magnesium and one or more surface active elements and arc stabilizer elements. Methods of making and using the aluminum welding alloys are further disclosed.

Abstract: The object of the present invention is to provide a flux composition and a solder paste composition in which scattering of flux is suppressed. A flux composition comprising an anti-scattering agent represented by formula (1) below, wherein Z is optionally substituted alkylene, R1 and R2 are each independently optionally substituted alkyl, optionally substituted aralkyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted cycloalkyl, or optionally substituted heterocycloalkyl, R3 and R4 are each independently optionally substituted alkyl.