Abstract: Nozzles for an additive manufacturing device and methods for improving wettability of the nozzles are disclosed. The method may include subjecting the nozzle to a surface treatment. The surface treatment may include contacting a surface of the nozzle with one or more surface modifying agents. The surface modifying agents may include one or more of an oxidizing agent, an acid, a base, or combinations thereof. The one or more surface modifying agents may increase an oxygen content of the surface of the nozzle. An inner surface of the nozzle may have a water contact angle of greater than 1° and less than about 90°. The inner surface of the nozzle may be free or substantially free of a coating.

Abstract: A snubber block for a manifold assembly of a gas turbine engine includes a body with at least one passage with a respective flow restrictive orifice, the body operable to receive a sensor and a male section that extends from the body, the male section receivable within a fuel manifold.

Abstract: Apparatus (1, 26) for depositing a layer (37, 38, 39) on a substrate (2) in a process gas comprises a chuck (3) comprising a first surface (4) for supporting the substrate (2), a clamp (4) for securing the substrate (2) to the first surface (14) of the chuck (3), an evacuatable enclosure (5) enclosing the chuck (3) and the clamp (4) and comprising an inlet, through which the processing gas is insertable into the enclosure (5), and control apparatus (19). The control apparatus (19) is adapted to move at least one of the chuck (3) and the clamp (4) relative to, and independently of, one another to adjust a spacing between the chuck (3) and the clamp (4) during a single deposition process while maintaining a flow of the processing gas and a pressure within the enclosure (5) that is less than atmospheric pressure.

Abstract: A connector fixing structure comprises a housing integrally formed with a tubular resin housing-side insertion opening member protruding inward and a receptacle connector provided in the housing and joined to the housing-side insertion opening member. The receptacle connector has a connector-side insertion opening member having a shape corresponding to that of the housing-side insertion opening member and a welding portion provided to the connector-side insertion opening member and combined with the housing-side insertion opening member. The housing-side insertion opening member and the connector-side insertion opening member are welded together by melting the welding portion over its entire circumference.

Abstract: A process fluid pressure measurement system is provided. The system includes a process fluid pressure transmitter having a pair of process fluid ports disposed coplanar with one another on a bottom surface thereof. The process fluid pressure transmitter is configured to measure a differential pressure between the pair of process fluid ports and provide an indication of the measured differential pressure over a process communication loop. A process fluid flange has a first surface configured to mount to the surface of the process fluid pressure transmitter, a second surface opposed to the first surface, and at least one lateral sidewall extending between the first and second surface. A plurality of fins are disposed proximate the lateral surface.

Abstract: A metallic component (1) for high-pressure applications, which serves in particular for fuel injection systems of air-compressing, self-igniting internal combustion engines, comprises at least one transition region (2). The transition region (2) is re-worked here after a hardening operation. The re-working is performed by electrochemical removal and mechanical removal, in particular honing.

Abstract: A liquid discharge head includes nozzles discharging liquid droplets; liquid chambers in communication with the nozzles; liquid supply paths in communication with the individual liquid chambers; and a common liquid chamber in communication with the liquid supply paths. Further, liquid is supplied from a direction from the common liquid chamber to the liquid supply paths, the direction crossing a direction of liquid flowing in the liquid supply paths, and in a wall surface of the common liquid chamber on a side closer to the individual liquid chambers, an inclined surface is formed in a direction orthogonal to a nozzle array direction in a manner that the common liquid chamber gradually expands as the common liquid chamber approaches the liquid supply paths.

Abstract: A nozzle system comprising a nozzle apparatus (610) and a pipeline (614), the nozzle apparatus attached to the pipeline such that there is fluid communication therebetween, the nozzle apparatus having a first inlet (631), a second inlet (622) and an outlet, wherein the nozzle apparatus extends into the pipeline such that at least a portion of the first inlet (631) is in the centre of the pipeline, that is within 15% of the central axis of the pipeline; and the second inlet (622) is within the pipeline but outwith the centre of the pipeline, the second inlet comprising a filter with at least one, normally at least four, linear apertures (625) therein, often parallel to a main axis of the nozzle apparatus (610). Preferably the first inlet is a larger aperture than the second inlet, and is provided on an end of the nozzle apparatus and the second inlet is provided on a side of the nozzle apparatus.

Abstract: A nozzle needle for an injector for injecting fuel includes at least one guiding section with a recess and a guiding surface configured to rest against an inner surface of a nozzle body of the injector, the recess at least partially delimiting the guiding surface and being configured to allow a flow of fuel along the guiding section, and the guiding surface being guided about the longitudinal axis of the nozzle needle in a helical manner.

Abstract: A turbine nozzle element including an inner annular platform sector, an outer annular platform sector, and at least one vane extending between the platform sectors and connected to both of them. The nozzle element includes a single piece of composite material including fiber reinforcement densified by a matrix that is at least partially ceramic, and the fiber reinforcement includes a fiber structure that is woven by three-dimensional or multi-layer weaving, and that presents continuity throughout the volume of the nozzle element and throughout the periphery of the vane.

Abstract: An electronic device manufacturing system may include a chamber port assembly that provides an interface between a transfer chamber and a process chamber. In some embodiments, the chamber port assembly may be configured to direct a flow of purge gas into a substrate transfer area of the chamber port assembly. In other embodiments, a process chamber and/or the transfer chamber may be configured to direct a flow of purge gas into the substrate transfer area. The flow of purge gas into a substrate transfer area may prevent and/or reduce migration of particulate matter from chamber hardware onto a substrate being transferred between the transfer chamber and a process chamber. Methods of assembling a chamber port assembly are also provided, as are other aspects.

Abstract: Disclosed is a plastic heat exchanger in which, when a heat exchanger tube of the plastic heat exchanger is coupled to a header, the heat exchanger tube and a junction portion of the header are melted and pressed simultaneously through a heat fusion jig including a fusion portion and a fusion valley so as to secure reliability against leakage of refrigerant, and a method of manufacturing the same, by which the plastic heat exchanger can be mass-produced at low fabricating cost through simple processes. The present invention provides a method of fabricating a plastic heat exchanger, comprising a step of melting and pressing a plastic heat exchanger tube and a junction of a header by using a heat fusion jig, and a plastic heat exchanger fabricated by the method, thereby securing reliability against leakage of refrigerant, having heat exchange performance more excellent than or equal to a metallic heat exchanger and also mass-producing the plastic heat exchanger at low fabricating cost through simple processes.

Abstract: An example provides an apparatus including a plate having a nozzle orifice, a flat portion, and a first surface having a recess forming a corresponding protrusion extending from a second surface, opposite first surface, of the plate. A substrate may be in spaced relation to the flat portion of the plate such that the protrusion extends toward the substrate and such that the flat portion and the substrate define, at least in part, a chamber.

Abstract: A method of assembling an airblast injector includes forming a fluid passage on an internal conical surface of a first nozzle component and/or on an outer conical surface of a second nozzle component configured and adapted to mate with the first nozzle component to form at least a portion of a fluid circuit therebetween. The fluid passage is configured and adapted to provide passage for fluid in the fluid circuit between the first and second nozzle components. The method also includes joining the first and second nozzle components together by engaging the second nozzle component within the first nozzle component.

Abstract: An atomizing device, includes an atomizing body (1) with an inlet (16) for receiving a fluid under increased pressure, and with at least one set of outflow ports (18) for allowing the fluid to escape on a delivery side with forming of a vapor. Imaginary central axes of the outflow ports directed in a flow direction herein enclose a mutual angle (?) in order to intersect each other at an intersection (S). The atomizing body includes a roof (21) and a bottom (11 which extend over at least a first distance (d1) beyond the set of outflow ports (18) and bound a vaporizing space (17) on either side. The intersection (S) of the imaginary central axes of the outflow ports lies at a second distance (d2) from the set of outflow ports, wherein the second distance (d2) is greater than the first distance (d1) and extends beyond the vaporizing space.

Abstract: A method for manufacturing an ejector nozzle tube, includes forming an essentially rectangular plate-type blank 1 to have an undulating configuration on two opposite edge areas 2, 3, subsequently bending the blank around an axis 4, which is arranged centrically and parallel to the edge areas 2, 3, with the edge areas 2, 3 being superposed and subsequently joining the edge areas by point connections 6, providing for the formation of ejector nozzles 5 between the point connections.

Abstract: The invention relates to a gun for spraying liquid at a very high pressure, referred to as a focusing gun, and to a method for manufacturing same, according to which two elongate parts (2) are manufactured to be assembled so as to form the focusing gun. Each of said parts includes an assembly surface (J) comprising a central groove (3) for forming the duct of the focusing gun once the parts have been assembled, and a gluing tank (9) for being filled with an adhesive substance. Further, at least one of said parts (2) has a centering rib (6), projecting relative to the assembly surface thereof, while the other part has, for each centering rib (6), a centering cavity (7), the size of which is suitable for tightly housing said centering rib.

Abstract: There is provided a through-hole manufacturing method for a cylindrical body wall that enables the operation of forming a through-hole without leaving a machining burr on the wall of a cylindrical member to be easily and reliably carried out without depending on experts.

Abstract: A fluid spray head comprising an expulsion channel provided with a spray orifice (1) and a spray profile (10) formed in an end wall of said expulsion channel, said spray profile (10) comprising non-radial spray channels (11) opening out to a central spray chamber (12) disposed directly upstream from said spray orifice (1), the central axis (X) of said spray orifice (1) being offset from the central axis (Y) of the spray chamber (12) by a distance that is less than 0.12 mm, and preferably less than 0.08 mm.

Abstract: A material dispense tip includes an elongated hole in an elongated neck that extends from an input end of the neck to an output end of the neck. The hole at the output end of the neck has a first diameter. The output end of the neck is positioned against a die surface. A punch is inserted into the hole at the input end of the neck. An external force is applied to the neck to cause the output end of the neck to be deformed under compression by the die surface, to reduce the diameter of the hole at the output end of the neck from the first diameter to a second diameter that is less than the first diameter.

Abstract: A fluid-dispensing nozzle including a nozzle body. A discharge tube is disposed in the nozzle body and has a plurality of cam grooves. The nozzle further includes a rotatable flow control. A pin is coupled to the flow control and rotatably engages a select cam groove such that rotation of the flow control causes the pin to rotatably slide in the select cam groove, causing the discharge tube to move linearly. A first and a second insert are coupled to the nozzle body, the first insert having a cam slot. The nozzle also includes a rotatable pattern sleeve. A cam follower is coupled to the pattern sleeve and engages the cam slot of the first insert. A determinable pattern of motion of the pattern sleeve is controlled by the first and second inserts. The first and second inserts are rearrangeable to change the pattern of motion of the pattern sleeve.

Abstract: A lead hole is formed in a base material of an injection hole member with a straight punch, and then, a taper hole is formed in the base material by widening the lead hole with a taper punch. An intersection line between a virtual plane perpendicular to a central axis of the lead hole and an inner peripheral surface of the lead hole is elliptic in shape, whose major axis is directed along an intersection line between a virtual plane, which includes the central axis of the lead hole and a thickness direction axis of the base material, and the virtual plane perpendicular to the central axis of the lead hole. An intersection line between a virtual plane perpendicular to a central axis of the taper punch and an outer peripheral surface of the taper punch is round in shape.

Abstract: A fiber preform is obtained by conforming panels of fiber texture on a former having a surface that reproduces the shape desired for a surface of the nozzle or the nozzle divergent section that is to be made. The panels are bonded together via their mutually contacting edges. A consolidated fiber reinforcement is formed by shaping the fiber preform impregnated with a consolidation composition including a resin. The shaping of the fiber preform is performed between the former and a jacket applied against the impregnated fiber preform so as the consolidated fiber reinforcement has a fiber volume percentage of at least 35%, and a thickness of less than 5 mm over at least a major fraction of its axial dimension. The densification of the fiber reinforcement is continued by chemical vapor infiltration after pyrolyzing the resin so that once densified, a part is obtained that has practically the shape and the wall thickness of the nozzle or the nozzle divergent section that is to be made.

Abstract: It is an object of the present invention to enhance the orifice design freedom and easy machine ability in a fuel injection valve in which orifices are formed by press-working.

Abstract: A method of manufacturing a hollow fiber spinning nozzle in which supply bores and a nozzle structure connected to these and having a mass discharge opening and a needle with a coagulation agent bore are formed in a base body. At least two plate-shaped bodies structured by means of micro-structure technology are joined together to form the base body.

Abstract: A showerhead is disclosed in this invention. The showerhead includes a bottom portion, at least one plate, and a top portion. The bottom portion includes a plurality of gas tubes which are integratedly formed on the bottom portion. The gas tubes include at least one first gas tube. The at least one plate includes a first plate. The first plate includes a plurality of first openings, wherein the gas tubes pass through the first openings. The top portion is coupled to the bottom portion for forming at least one inner space.

Abstract: A method of modifying a surface of the nozzle of a liquid dispenser used to dispense liquid for manufacturing a liquid crystal display (LCD) includes primarily modifying the surface of the nozzle by performing one of oxygen (O2) or ozone (O3) plasma treatment with respect to the surface of the nozzle, secondarily modifying the primarily modified surface of the nozzle by treating the primarily modified surface with aminopropyltriethoxysilane, and tertiary modifying the secondarily modified surface of the nozzle by allowing an epoxy resin to react with the secondarily modified surface of the nozzle.

Abstract: Disclosed herein is a method for processing an orifice capable of processing recessed portions and orifices, each having a unique hole diameter different from each other, to high positioning accuracy and in a short time. A press includes: a B-axis angle indexing device 3 disposed on a base 2b, the B-axis angle indexing device 3 including a table B; an A-axis angle indexing device 25 disposed on the table B, the A-axis angle indexing device 25 including a table A; a chuck 32 disposed on the table A, the chuck 32 for holding a work; a base Z 6 disposed on a base, the base Z 6 being operable in an axis Z-direction; a base X 8 disposed on the base Z, the base X 8 being operable in an axis X-direction; a punch holding portion 13 disposed on the base X, the punch holding portion 13 being operable vertically in an axis Y-direction; and a plurality of punches 19, 22 held on the punch holding portion in parallel with the axis Z.

Abstract: A production robust autofrettage process for strengthening fuel injector nozzle tips includes applying a vacuum to the interior volume of the nozzle tip. Plugs are suctioned over each of the nozzle outlets. Nozzle outlets are blocked by pressing the plugs between the nozzle tip and a fixture component. The nozzle tip is then autofrettaged at least in part by pressurizing the interior volume with an autofrettage liquid. The plugs are then removed from the nozzle outlets leaving the nozzle tip strengthened with compressive residual stress, especially in the sac region of the interior volume of the nozzle tip.

Abstract: A method of repairing a modular gas turbine fuel nozzle tip, having a fuel-conveying body and an annular cap fastened to the body by at least two fasteners, includes removing the fasteners, replacing the annular cap with a replacement annular cap, and interconnecting the replacement annular cap and the body using new fasteners.

Abstract: A process for manufacturing an inkjet print head comprising the steps of providing a print head wafer comprising a plurality of print head dice coated with a barrier layer, each print head die comprising a plurality of actuators and interconnections, the barrier layer comprising a plurality of openings in correspondence with the plurality of actuators and interconnections, providing a debondable SOI wafer comprising a handle layer, a buried layer, and a device layer, forming a protective layer on the surface of the device layer, bonding the device layer to the barrier layer, debonding the handle layer from the SOI wafer, etching the device layer so as to realize a plurality of openings in correspondence with the plurality of actuators and interconnections, and removing the protective layer in correspondence of the plurality of openings.

Abstract: A fuel nozzle sheath has a lateral opening for admitting air about a nozzle stem. The stress distribution along the perimeter of the window is smoothed out by increasing the corner radius of the window corner presenting higher stress concentration.

Abstract: There is provided a method for manufacturing a liquid discharge head that includes a discharge port, a supply path for supplying the liquid to the discharge port, a transparent member, and an absorptive member, wherein the transparent member and the absorptive member include supply path sections that become a part of a wall of the supply path. The method includes bringing the transparent and absorptive member into contact with each other in such a manner that surfaces of both members including the supply path sections are brought into contact with each other in the vicinity of the supply path sections, welding the both members by irradiating the contact portion where the both members are in contact with each other with the laser beam, and exhausting gas from an exhaust path formed on the liquid discharge head in the vicinity of the contact portion at least throughout the welding process.

Abstract: A nozzle for delivering a measured quantity of viscous liquid including a flared opening defined by a horizontal perimeter and a flare wall extending inward from the perimeter, a cylindrically-shaped barrel wall extending from the flare wall downward to a break point defined by a circle parallel to the flare opening and spaced-apart therefrom, a cone-shaped wall extending downward from the circular break point and inward therefrom to a circular exit opening, and a small-diameter exit tube extending from the circular exit opening to a circular exit aperture.

Abstract: A method for manufacturing a liquid ejection head including a substrate and a member, disposed above the substrate, having passages communicatively connected to discharge ports through which a liquid is ejected includes providing first solid layers made of a positive photosensitive resin above the substrate such that outer side surfaces of the first solid layers form an obtuse angle with the substrate; providing a second solid layer above the substrate such that the second solid layer abuts the outer side surfaces of the first solid layers, the second solid layer being processed into at least one portion of a mold for the passages; exposing portions of the outer side surfaces of the first solid layers through the second solid layer; removing the exposed portions from the first solid layers; and providing a cover layer over the second solid layer, the cover layer being processed into the member.

Abstract: A method of fabrication of a rocket engine nozzle assembly using pressure brazing generally includes initially assembling a rocket engine nozzle liner into a rocket engine nozzle jacket for a rocket engine nozzle assembly. The rocket engine nozzle assembly may then be sealed. Prior to pressure brazing the rocket engine nozzle assembly, pressure brazing parameters may be determined. The pressure brazing may be performed with the determined pressure brazing parameters to complete the fabrication of the rocket engine nozzle. The rocket engine nozzle assembly may include a rocket engine nozzle jacket and a rocket engine nozzle liner having a plurality of channels, with the space between each channel defining a land, and the rocket engine nozzle liner having at least a pair of endlands disposed at each end thereof. The rocket engine nozzle liner is bonded to the rocket engine nozzle jacket by the endlands being bonded to the nozzle jacket and the lands being pressure brazed to the nozzle jacket.

Abstract: A floating collar is metal injected molded with an excess portion intended to be separated, such as by shearing, from the reminder of the molded floating collar to leave a chamfer thereon and/or remove injection marks.

Abstract: Apparatus for supplying a fluid comprising a pipe having at least one aperture through a wall of the pipe, each of the at least one apertures comprising a first portion in an inner surface of the wall, a second portion in an outer surface of the wall, the first portion intersecting the second portion to form an opening, the first portion having a first cross-sectional area at the inner surface that is greater than a second cross-sectional area of the opening; wherein the first cross-sectional area and the second cross-sectional area have a first ratio within a first predetermined range so as to enable fluid flowing through the pipe at a predetermined flow rate to exert a predetermined pressure to spray fluid from the at least one aperture to atmosphere and also to flush the first portion.

Abstract: A floating collar is metal injected moulded with an excess portion intended to be separated, such as by shearing, from the reminder of the moulded floating collar to leave a chamfer thereon and/or remove injection marks.

Abstract: A hose coupling fitting is furnished with a coupling head portion having a connecting hole, and a nipple portion having a nipple hole, and is fabricated through sequential cold forging steps carried out on a rod material. Specifically, a first pilot hole is formed along the center axis from a first end of the rod material, and a second pilot hole is formed along the center axis from the other end of the rod material. The second pilot hole is connected to the first pilot hole, and is formed with smaller diameter than the first pilot hole and larger diameter than the nipple hole. The surrounding area of the second pilot hole is then worked to form the nipple portion.

Abstract: A fuel injector for a gas turbine engine includes an inlet having a fuel inlet fitting for receiving fuel. A feed arm is mounted to the inlet and has an internal conduit in fluid communication with the inlet for conveying fuel from the inlet fitting through the feed arm. A nozzle body is operatively connected to the feed arm for injecting fuel from the internal conduit into a combustor of a gas turbine engine. At least one of the inlet, feed arm, and nozzle body includes a lattice support structure.

Abstract: Methods and systems of ejecting ink drops from an inkjet printer are disclosed. The methods and systems can include a printhead with one or more stepped nozzles each with an associated entrance diameter and exit diameter. Ink can be received into the printhead and formed into ink drops in the stepped nozzles. The ink drops can each have an associated drop mass and drop speed. The stepped nozzles can be provided such that the exit diameter can independently dictate the drop mass and the entrance diameter can independently dictate the drop speed. As such, the complexity of jet design optimization is reduced.

Abstract: In a method for producing plastic sanitary articles having surfaces metallized by electroplating, the sanitary article has at least one electrically nonconductive component, before said article is metallized by electroplating using an external current source. This component at least partially decouples the water-bearing regions of the sanitary article from the current flow during metallization by electroplating using the external current source. The component is preferably a separate component which can be reversibly connected to the sanitary article. The invention also includes the component for decoupling the current itself, and a sanitary article which is provided with the component.

Abstract: A showerhead is disclosed in this invention. The showerhead includes a bottom portion, at least one plate, and a top portion. The bottom portion includes a plurality of gas tubes which are integratedly formed on the bottom portion. The gas tubes include at least one first gas tube. The at least one plate includes a first plate. The first plate includes a plurality of first openings, wherein the gas tubes pass through the first openings. The top portion is coupled to the bottom portion for forming at least one inner space.

Abstract: A top nozzle for a nuclear fuel assembly and a method of manufacturing the top nozzle are provided. The top nozzle can include a coupling plate, a perimeter wall and a hold-down spring unit. The coupling plate can be coupled to a guide thimble of the nuclear fuel assembly. The perimeter wall can protrude upwards from the perimeter of the coupling plate. A spring clamp can be provided on the upper surface of the perimeter wall. The hold-down spring unit can be mounted to the upper surface of the perimeter wall in such a way to couple a corresponding end of the hold-down spring unit to the spring clamp. A fastening pin hole can be vertically formed through an upper surface of the spring clamp. A spring insert hole into which the hold-down spring unit can be inserted and formed by electro-discharge machining in an insert direction of the hold-down spring.

Abstract: A remanufacturing and salvaging strategy for fuel injector tips such as high flow fuel injector tips includes blocking a first set of spray orifices in the fuel injector tip, including at least partially filling the first set of spray orifices with a material, for example by laser welding. New spray orifices are formed in virgin material of the fuel injector tip, offset from the former spray orifices, also for example via a laser. A remanufactured fuel injector tip includes blocked former spray orifices as well as new spray orifices configured to permit spraying of fuel from the fuel injector tip.

Abstract: A lead hole is formed in a base material of an injection hole member with a straight punch, and then, a taper hole is formed in the base material by widening the lead hole with a taper punch. An intersection line between a virtual plane perpendicular to a central axis of the lead hole and an inner peripheral surface of the lead hole is elliptic in shape, whose major axis is directed along an intersection line between a virtual plane, which includes the central axis of the lead hole and a thickness direction axis of the base material, and the virtual plane perpendicular to the central axis of the lead hole. An intersection line between a virtual plane perpendicular to a central axis of the taper punch and an outer peripheral surface of the taper punch is round in shape.

Abstract: A secondary fuel nozzle is formed by brazing and welding a central core, a cylindrical body, and a unitary secondary fuel nozzle portion. The central core has a central bore for receiving a liquid fuel cartridge, and at least two passages concentric with the central bore. The secondary fuel nozzle portion includes a base flange and a main shaft having a central bore for aligning with the central bore of the core and for receiving the liquid fuel cartridge, and a plurality of peripheral bores disposed at spaced locations about the central bore for flow communication with the concentric passages of the core. The core is brazed to the base flange and the cylindrical body is disposed around the core and welded to the base flange to define a one-piece secondary fuel nozzle assembly.

Abstract: The present application provides a method of mounting lip seals within a sleeve assembly of a fuel nozzle. The method may include the steps of sliding a first lip seal along a second diameter tube until the first lip seal contacts a first tube flange of a first diameter tube, sliding a seal spacer along the second diameter tube until the seal spacer contacts the first lip seal, and sliding a second lip seal along the second diameter tube until the second lip seal contacts the seal spacer.

Abstract: A method of assembling a fuel nozzle includes providing a first nozzle component and a second nozzle component, wherein the first nozzle component is configured and adapted to engage within the second nozzle component. Braze is applied to at least one of the first and second nozzle components. The first nozzle component is assembled into the second nozzle component to provide a diametral interference fit therebetween. The method further includes joining the first and second nozzle components together. A fuel nozzle includes a first cylindrical nozzle component, a second cylindrical nozzle component disposed with an interference fit on an outward surface of the first nozzle component, and a layer of braze joiningly disposed between the first and second nozzle components.