Abstract: [Problem] To provide: a roll-bonded body which is able to be suppressed in waviness in the surface; and a method for producing this roll-bonded body. [Solution] A roll-bonded body according to the present invention is obtained by bonding a first metal layer and a second metal layer with each other by means of rolling, and is characterized in that the surface of the first metal layer has an arithmetic average waviness (Wa1) 0.01-0.96 and a maximum waviness height (Wz1) of 0.2-5.0 ?m.

Abstract: A band feeding process, a band feeding system and a plant for the production of cores with stacked grain-oriented laminations for transformers are disclosed. The plant includes a processing unit to cut a band made of a ferromagnetic metal material, in particular made of magnetic silicon steel, so as to obtain one or more laminations. The processing unit includes an input, and the plant includes a feeding system having plurality of feeding stations. Each feeding station is configured to feed a respective band to the input.

Abstract: Provided is a titanium composite material 1 including: a first surface layer portion 2; an inner layer portion 4; and a second surface layer portion 3; wherein: the first surface layer portion 2 and the second surface layer portion 3 are composed of a titanium alloy; the inner layer portion 4 is composed of a commercially pure titanium including pores; a thickness of at least one of the first surface layer portion 2 and the second surface layer portion 3 is 2 ?m or more, and a proportion of the thickness with respect to an overall thickness of the titanium composite material 1 is 40% or less; and a porosity in a cross section perpendicular to a sheet thickness direction is more than 0% and 30% or less.

Abstract: A semifinished product with a sacrificial structure and two component carriers releasably formed on opposing main surfaces of the sacrificial structure. The component carriers include at least one electrically insulating layer structure, and at least one electrically conductive layer structure. The at least one electrically insulating layer structure relates to a respective one of the component carriers. Located closest to the sacrificial structure are pure or unprocessed electrically insulating layers without electrically conductive material therein.

Abstract: A tape having a fully wound stable state and a fully unwound stable state, configured for space applications, the intermediate states between the fully wound state and the fully unwound state comprises a single continuous portion of wound tape with a first radius of curvature greater than a threshold value and a single continuous portion of unwound tape with a second radius of curvature less than the threshold value, the value of the second radius of curvature being continuous over the unwound portio; the tape comprises a stack comprising fibrous layers extending in a longitudinal direction, the resulting stack having symmetry with respect to a longitudinal plane of its fibres to compensate for torsional deformations generated by variations in temperature.

Abstract: A composite structure comprises stacked sets of laminated fiber reinforced resin plies and metal sheets. Edges of the resin plies and metal sheets are interleaved to form a composite-to-metal joint connecting the resin plies with the metal sheets.

Abstract: A power module substrate includes a circuit layer, an aluminum layer arranged on a surface of an insulation layer, and a copper layer laminated on one side of the aluminum layer. The aluminum layer and the copper layer are bonded together by solid phase diffusion bonding.

Abstract: An apparatus for the plasma coating of a substrate, in particular a press platen, is provided and is used to perform a method to plasma coat the press platen. The apparatus includes a vacuum chamber and, arranged therein, an electrode, which is segmented. Each of the electrode segments has a dedicated connection for an electrical source. Also provided is the method for operating the apparatus. According to the method, a substrate to be coated is positioned opposite the electrode and at least one energy source that is assigned to an electrode segment is activated. Moreover, a gas is introduced, with the effect of bringing about plasma-enhanced chemical vapor deposition on the substrate.

Abstract: Disclosed are methods of welding a stack of metal foil layers together using a penetration weld. The methods include stacking of the metal foil layers, pressing or compressing the metal foil layers between end plates and welding the end plates and compressed metal foil layer stack together.

Abstract: A method (e.g., for creating a printing plate assembly of an ink jet print head assembly) includes coating one or more sides of plural planar subsection plates with a bonding material. The subsection plates include printing holes through which a fluid is to be ejected from the ink jet print head assembly. The method also includes placing the subsection plates of the printing plate assembly against each other with the printing holes axially aligned with each other and heating the bonding material between the subsection plates such that the subsection plates are affixed to each other. The subsection plates are coupled with each other to form a chamber printing assembly that is coupled to the ink jet print head assembly that prints fluid onto one or more objects by ejecting the fluid out of the printing holes of the subsection plates. The subsection plates may be hermetically bonded to each other by inductively heating the assembly.

Abstract: A method reinforcing an axisymmetric annular metal part by including a winding of composite material. A metal blank for the part is prepared, a cavity is formed therein that opens out into a coaxial inside face thereof, and that presents a right cross-section of axial extent that decreases from the inside towards the outside, a reinforcing yarn is wound in the cavity, the cavity is closed, the assembly is subjected to a hot isostatic compression process, and the blank is machined to obtain a final part.

Abstract: A method of manufacturing a reinforcing edge for attachment to a turbo machine aerofoil, wherein the reinforcing edge comprises a relatively thick nose portion contoured for fitting along the edge of the turbo machine aerofoil, and a pair of opposing, relatively thin, tail portions for overlapping the suction surface and pressure surface respectively of the aerofoil, the method comprising: pressure forming a predefined hollow workpiece under fluid pressure from a respective pre-form, the hollow workpiece incorporating the reinforcing edge; and cutting out said reinforcing edge from the hollow workpiece, wherein the pre-form is created by bonding a pair of relatively thin metal sheets to opposite faces of a relatively thick inner plate or bonded stack of inner plates, the inner plate or stack of inner plates having an opening which defines a closed cavity between the metal sheets for introducing said fluid pressure, each tail portion of the reinforcing edge being constituted by part of a respective one of the

Abstract: A transducer and method of forming a transducer is disclosed. The method comprises locating a feed wire for forming a drive pin on a reed surface, welding a first end of the feed wire to the reed, cutting the feed wire to form a drive pin, and securing the drive pin to a paddle. The first end of the feed wire can be welded to the reed by a laser welding operation. The laser melts the reed to form a molten reed material, and the feed wire is pushed through the molten reed material to form a weld between the feed wire and the reed, once the molten reed material solidifies. The wire coil is then cut with a second laser to form the drive pin. The drive pin is then adhered to a paddle with an adhesive.

Abstract: A structure includes a first part provided in a first plane and second and third parts provided in a second plane located under the first plane. The second and third parts are welded together at a welded seam. The first part has at least one recess configured to receive a welding mechanism that forms the welded seam on the second and third parts. Another structure includes an “n” number of layers, n being at least three. Adjacent layers are in contact with one another and are connected by a welded seam. The structure also includes an outer surface. The layers between the outer surface and the respective welded seam define a recess through which a welding mechanism is configured to be passed as far as the respective layers to be welded to produce the welded seam.

Abstract: Disclosed is a multilayered steel composite which compatibly achieves properties such as strength and ductility that are incompatible in conventional steels and is excellent in strength, ductility, weldability, toughness and fatigue strength. Also, disclosed is a method for producing the multilayered steel which is produced by rolling with least two kinds of steels having different chemical compositions and microstructure or different mechanical properties, in combination.

Abstract: A laminate aluminum block for forming an article includes a series of aluminum laminate plates to collectively form a tool body for forming an article in a forming operation. A series of aluminum brazing layers are formed for brazing together adjacent aluminum laminate plates. The series of aluminum laminate plates and the series of aluminum brazing layers are deoxidized. Draining apertures are formed through a plurality of the series of aluminum laminate plates. The series of aluminum laminate plates are stacked alternating with the aluminum brazing layers between adjacent aluminum laminate plates without a flux. The stacked series of alternating aluminum plates and aluminum brazing layers are pressed. The stacked series of alternating aluminum plates and aluminum brazing layers are heated in a vacuum furnace to a temperature wherein the aluminum brazing layers braze the aluminum laminate plates together and excess braze material drains from the draining apertures.

Abstract: A brazed aluminum counter-flow heat exchanger particularly suited for use in Ocean Thermal Energy Conversion is produced by assembling and welding subassemblies of corrugated fins that were previously vacuumed brazed in a stacked group. After the brazing operation, the stacked group of subassemblies are later separated and rearranged to create a subsequent stack of alternating layers of corrugated layers and layers having wide open saltwater passageways. To complete the unit, a friction stir welding process provides final exterior weld seams that penetrate to the internal saltwater passageways in the heat exchanger. The full weld penetration eliminates corrosion-conducive crevices at the welded joints, thus making the aluminum heat exchanger suitable for saltwater use.

Abstract: Fabrication techniques for and examples of metallic composite materials with high toughness, high strength, and lightweight for various structural, armor, and structural-armor applications. For example, various advanced materials based on metallic-intermetallic laminate (MIL) composite materials are described, including materials with passive damping features and built-in sensors.

Abstract: Approaches for helping to decrease the amount of inactive gas necessary for reflow to interconnect connection terminals of a head slider and a suspension. Inactive gas is blown from a nozzle of a reflow apparatus toward interconnection joints of a head slider and a suspension. The head slider is bonded onto a gimbal tongue. The nozzle comprises a duct through which the inactive gas passes and a porous member fitted in an ejection outlet of the tube. Placing the porous member close to the head slider achieves effective reduction of oxygen concentration around solder balls.

Abstract: Recent semiconductor device becomes high powered, and on the material of heat sinks on which these devices are mounted, lower thermal expansion coefficient and higher thermal conductivity are needed. For this requirement, material with thermal conductivity as high as Cu alone and also with low thermal expansion coefficient, is needed. An aspect in accordance with the present invention provides, a cladding material in which 1st material layer and 2nd material layer are laminated alternately, wherein thermal expansion coefficient of said 2nd material is lower than the thermal expansion coefficient of said 1st material, and thermal conductivity of said 2nd material is lower than the thermal conductivity of said 1st material, and a total number of laminated layers composed of said 1st material and said 2nd material is 5 or more.

Abstract: A chemical reactor 1 for the reaction of fluid reaction mixtures is disclosed. The reactor includes at least one adiabatic reaction zone 2 with a catalyst bed 3 and at least one heat exchanger 4 downstream of the reaction zone 2. The heat exchanger 4 includes plates 5, 6 which are layered on top of one another and joined to one another. The individual plates 5, 6 have at least two separate fluid flow channels 7, 8 arranged in a predetermined pattern. The plates have fluid flow channels 7, 8 which are arranged so that the reaction mixture flows through the heat exchanger 4 in a first flow path direction and the heat-transfer medium used in the heat exchanger 4 flows through the heat exchanger 4 in a second flow path direction. The plates 5, 6 in the heat exchanger 4 are joined to one another by hard soldering.

Abstract: An apparatus for placing solder bumps on a mold plate includes: a solder fill head configured for dispensing molten solder onto the mold plate, the solder fill head also configured for relative movement over the mold plate; and a control mechanism configured for controlling positions of the solder fill head relative to the mold plate.

Abstract: The present invention relates to a device and method for brazing a heat pipe assembly with copper-silver alloy filler rings to improve heat dissipation efficiency of a heat pipe. The device comprises a brazing furnace and a conveyor. The brazing furnace comprises an open ended passage with a multi-stage brazing heater and cooler. The conveyor comprises an input bracket assembly, an output bracket assembly and a steel mesh belt. The method comprises steps of (A) providing multiple heat pipe components, (B) assembling the heat pipe components to form heat pipe assemblies, (C) injecting mixed gas, (D) turning on the multi-stage brazing heater and cooler, (E) placing the heat pipe assemblies on the conveyor, (F) brazing the heat pipe assemblies to form heat pipes, (G) cooling the heat pipes and (H) removing the heat pipes from the conveyor.

Abstract: A method and apparatus for performing a unified metal alloying of jet stacks without the use of a bond press, and without the use of a continuous belt driven furnace. The method may include horizontally stacking fusible parts onto a fixture and transporting the fixture into an interior of a reaction chamber of a diffusion furnace. An operator may seal the interior of the reaction chamber and the diffusion furnace may increase a temperature of an atmosphere of the interior of the reaction chamber to a predefined dwell temperature to perform a first level alloying for a predefined dwell time. The diffusion furnace may thereafter increase the temperature of the interior of the reaction chamber to a predefined brazing temperature to perform a second level alloying for a predefined brazing time.

Abstract: Fabrication techniques for and examples of metallic composite materials with high toughness, high strength, and lightweight for various structural, armor, and structural-armor applications. For example, various advanced materials based on metallic-intermetallic laminate (MIL) composite materials are described, including materials with passive damping features and built-in sensors.

Abstract: A method for bonding metallic plates includes: sandwiching a laminated body, which includes a plurality of metallic plates and is formed with an inner cavity opening on a surface thereof, between a pair of jigs each having a flat abutment surface abutting against respective surfaces of the laminated body, wherein at least one of the jigs is formed with an atmosphere communication path, which communicates with the inner cavity and atmosphere; and heating the laminated body while applying pressure to the laminated body with the pair of jigs in a lamination direction of the laminated body.

Abstract: Fabrication techniques for and examples of metallic composite materials with high toughness, high strength, and lightweight for various structural, armor, and structural-armor applications. For example, various advanced materials based on metallic-intermetallic laminate (MIL) composite materials are described, including materials with passive damping features and built-in sensors.

Abstract: A preform with edges overlapped and jointed each other and first and second outer members for forming outer surfaces of a hydroformed product, and reinforcement members that are jointed to the first and second outer members to form reinforcement ribs that divide a hollow cross section of the outer surfaces, the reinforcement members having dimensions capable of suppressing elongation in a tensile direction due to a tensile force that develops during hydroforming.

Abstract: A filter is formed by a sintered non-woven metal fiber cloth adapted to be installed in a liquid passage, and, in the filter, a substance sticking to the surface of metal fibers which is present in the outermost part of the filter and in the vicinity thereof is removed together with the surface layer of the metal fibers.

Abstract: The present invention relates to diffusion bonding of patterned sheets to form a fluid flow handling structure, and to a method of preventing bonding between a load distribution block and a plate set of stacked sheets during the diffusion bonding process.

Abstract: A CMC sandwich used to fabricate CMC structures includes facesheets bonded to a core reinforced with a ceramic truss comprising an array of CMC pins. The binder matrix in the ends of the pins is removed, leaving exposed, flexible ceramic fibers. The exposed ceramic fibers are bent so as to extend parallel to the facesheets, and are bonded to one or more plies of the facesheets. The binder matrix in the ends of the ceramic pins may be removed by mechanical or chemical processes.

Abstract: A UBM pad has a first material layer which has a first material, and a second material layer which has a second material and represents an end layer or is arranged between an end layer and the first material layer. The first material and the second material exhibit properties with regard to a solder material that the presence of the second material prevents any metallurgical reactions of the first material with the solder material in the entire temperature range of connecting and of the operation of the structured electronic device which are detrimental to the reliability of the overall joint.

Abstract: A method and apparatus for producing a sandwich structure that is lightweight and many times stiffer than regular sheet metal, and which is easily formable into curved structures as well as structures having compound curves. In one embodiment, a formed core includes a plurality of cells comprising alternating front and rear projections extending outwardly in front of and behind a median plane, with each projection having a bonding surface area or land configured to be bonded with corresponding external sheets on both sides of the formed core. A plurality of micro-abrasions or indentations are formed on the bonding lands, allowing stronger bonding joints to be formed between the core and the external sheets by facilitating improved capillary action by the core during the bonding process.

Abstract: Fabrication techniques for and examples of metallic composite materials with high toughness, high strength, and lightweight for various structural, armor, and structural-armor applications. For example, various advanced materials based on metallic-intermetallic laminate (MIL) composite materials are described, including materials with passive damping features and built-in sensors.

Abstract: The invention relates to a sheet metal plate, especially made of steel, for producing motor vehicle body components. In order to make the body component sufficiently rigid at highly stressed points in spite of using lightweight materials, the sheet metal plate (11) is provided with local reinforcement zones (13, 14). To this avail, the sheet metal plate (11) is joined together from at least two cut metal sheets (7, 9) with a straight seam (10). At least one of the cut metal sheets (7) comprises several parallel strips (2 to 6) having different strengths while each local reinforcement zone (13, 14) lies within a reinforced strip (2, 3).

Abstract: A method for superplastically forming a preform to manufacture a structural assembly with a contoured configuration is provided. The preform includes first and second structural members in a stacked configuration, with at least one additional peripheral member abutting the stack and joined thereto by a friction welded butt joint. In some cases, the preform defines dissimilar forming characteristics throughout, such as variations in material or thickness according to the amount of superplastic forming to be performed in each portion of the preform.

Abstract: A preform with edges overlapped and jointed each other and first and second outer members for forming outer surfaces of a hydroformed product, and reinforcement members that are jointed to the first and second outer members to form reinforcement ribs that divide a hollow cross section of the outer surfaces, the reinforcement members having dimensions capable of suppressing elongation in a tensile direction due to a tensile force that develops during hydroforming.

Abstract: A composite metal sheet for use in making lightweight cookware or as a food warming tray comprising a layer of aluminum roll bonded to a layer of stainless steel defining a food-contacting surface on a first side. The food warming tray embodiment also includes a layer of stainless steel mesh roll bonded on a second side. A method of making a composite metal sheet for cookware comprising the steps of: providing a roll pack of ordered layers consisting of (a) a layer of Alclad aluminum, (b) a layer of stainless steel foil, (c) a reusable plate or platen of stainless steel, (d) a layer of stainless steel foil, and (e) a layer of Alclad aluminum; heating the roll pack to a rolling temperature of about 725°-775° F., preferably about 750° F.

Abstract: A speaker collective substrate with component insertion hole sections and electrode sections has a plurality of speaker forming areas. An electrical speaker section, which comprises a magnetic circuit section and a vibration section, is inserted into each of the component insertion hole sections. Then, a collective lid, in which a plurality of lids have been formed for sealing the electrical speaker sections, is attached onto the speaker collective substrate. After that, the speaker collective substrate and the collective lid are divided into individual speaker forming areas along partition lines extending in the directions of the X and Y axes to form individual dynamic speakers. Thus, it is possible to mass-produce dynamic speakers with uniform quality through a collectively manufacturing process.

Abstract: Cookware having improved uniform heat transfer over the entire cross section thereof, the cookware formed from a multi-layered composite metal having a layer of stainless steel roll bonded at or near the core of the composite. The stainless layer is roll bonded to layers of aluminum which, in turn, is roll bonded to layers of stainless steel or aluminum. The layer of stainless steel adjacent to the cooking range may be a ferromagnetic grade of stainless steel if induction-type heating is desired. The cookware may include a non-stick surface applied thereto.

Abstract: A head suspension for a disk drive has a base plate (19) to be attached to a carriage of the disk drive and a load beam (21) consisting of a rigid part (27) and a resilient part (29), to apply load onto a slider. The rigid part and resilient part are separately formed. The rigid part is joined to a first side (29a) of the resilient part. The suspension also has a reinforcing plate (37) to hold and fix a second side (29b) of the resilient part between the reinforcing plate and the base plate. The base plate stably and resiliently supports the load beam. This suspension satisfies required characteristics.

Abstract: A ceramic armor is disclosed in several embodiments. In a first embodiment, a metal base plate has a metal frame assembled on it having a central opening into which the ceramic material is placed. A cover plate is placed over the frame to enclose the ceramic material on all sides. In a second embodiment, the frame has an open central area that has two crossing walls that define four sub-chambers. Four pieces of ceramic material are placed in the respective sub-chambers and a covering plate is placed over it. In a further embodiment, the frame has a plurality of cavities mechanically formed in it. A ceramic tile or plate is placed in each cavity and a cover plate is placed over the frame. The metal used to encapsulate the ceramic material may, if desired, comprise a Titanium alloy such as Ti-6Al-4V, and the ceramic material may comprise Silicon Carbide, Boron Carbide, Tungsten Carbide, Titanium Diboride or Aluminum Nitride.

Abstract: A method of affixing head suspension components to one another using an edge weld formed at the edge of one head suspension assembly component positioned in an overlapping fashion relative to another head suspension assembly component, and an apparatus assembled by the method.

Abstract: A plate of an expanded metal and two metal plates are overlaid on one another. The expanded metal plate has a plurality of meshes. The linear expansion coefficient of the expanded metal is equal to or less than 8×10?6/° C., and the thermal conductivity of the metal plates is equal to or more than 200 W/(m·K). Then, the metal plates and the expanded metal plate are subjected to hot rolling to be rolled and joined. The rolling and joining are performed in two stages. In the first stage, the meshes of the expanded metal plate are filled with the material of the metal plates. In the second stage, the rolling and joining are performed such that the composite material has a predetermined thickness. The volumetric ratio of the expanded metal plate to the composite material is in a range between 20% and 70%, inclusive. The composite material, which has an improved thermal conductivity and strength and is suitable for heat dissipating substrate, is manufactured at a reduced cost.

Abstract: One joint member having a melting point different from that of the other joint member is joined to each bonding pad of a slider and further joined to each bonding pad of a suspension through the other joint member. The slider is exfoliated from the suspension in the state that the one joint member is attached to the slider by heating and melting the other joint member.

Abstract: A method for mechanically cutting a continuous circular shaped groove in a foil sheet for use in a metal matrix composite product. In one form the foil sheet is held adjacent a rotating machine tool by vacuum and a cutting tool is moved relative thereto to cut a spiral groove.

Abstract: A method of manufacturing a loudspeaker comprises: continuously forming diaphragm portions and alignment portions on a band resin film; positioning one of a frame and a protector at an upper die or lower die; aligning other alignment portions formed on the frame, the protector, or the upper or lower die having the film disposed thereon, with the alignment portion formed on the film; bonding the frame and the resin film that is to form the diaphragm; and cutting a diaphragm out of the resin film. A position of bonding the diaphragm to the frame or the protector can be easily determined by aligning the alignment portion formed on the band resin film with another alignment portion provided on the frame, the protector, or the lower or upper die on which the frame or protector is disposed. Further, a conventionally-indispensable ring can be eliminated to reduce a number of components.

Abstract: A stator for an automotive alternator is provided with good installation characteristics for stator coils and which can lower noise. The stator includes a stator core in which a plurality of slots are formed at an inner circumference thereof and stator coils which are fitted into the slots. A rotor is provided inside the stator and includes a rotor coil, and a pole core for housing the rotor coil. Two slots are provided for each set of stator coils, each phase and each magnetic pole and the total number of slots is seventy-two or more. The stator core formed by laminating a plurality of sheet-shaped magnetic members. The stator coils are disposed in the slots, and the stator core is rounded such that the stator coils become the inner side thereof and both end surfaces thereof are contacted to connect the stator core in an annular shape.

Abstract: A method of diffusion bonding three metal work pieces to form a fan blade, where each workpiece has a flat surface and an excess portion larger than a predetermined size needed to produce a finished fan blade; longitudinally extending slots are provided to interconnect the flat surfaces of the excess portions of the work pieces; the work pieces are assembled into a stack with the flat surfaces in mating abutment and the stack is evacuated from one end of the stack through the slots; heat and pressure are applied across the thickness of the work pieces to diffusion bond the work pieces together to form an integral structure; the excess portions with the slots are then removed.

Abstract: A method of forge welding laminates of titanium and titanium alloys includes interleaving first and second pluralities of metal pieces in an enclosure, filling the enclosure with an inert gas, heating the enclosure and the first and second pluralities of metal pieces, and mechanically pressing the enclosure on a first axis with a force sufficient to cause the first and second pluralities of metal pieces to forge-weld together. The first and second pluralities of metal pieces may be metallurgically dissimilar from each other, and may each comprise a percentage of titanium.