A process for manufacturing a light-alloy hybrid wheel, implements the following separate operation phases: making a flange with an internal profile capable of constituting a tire bead seat; making a rim with, on one side, an outer profile capable of constituting a tire bead seat and, on the other side, a circular flank for assembly with a part of the flange; and assembling the flange with the rim, at the seat of said flange and the circular flank of the rim. The rim is made according to the following consecutive operations: an operation of manufacturing a circular flank; then an operation of expanding said circular flank to the size of the final rim in a single step; then an operation of cold or hot flospinning of said circular flank so as to obtain the rim in the final shape and profile thereof, comprising a shoulder only on the side that will not be welded to the flange.

A friction stir spot welding method according to one aspect of the present invention includes: performing a plunging process of moving a shoulder (28) toward a second workpiece (102) from a first workpiece (101) side while rotating a rotary tool to plunge the shoulder into the first and second workpieces; and performing a backfilling process of pushing stirred materials that have flowed into an inside of the shoulder in the plunging process out of the shoulder and backfilling a plunging hole with the stirred materials, the plunging hole being formed by the plunging of the shoulder. In the plunging process, the shoulder is plunged to a position that is shifted from a boundary between the first workpiece and the second workpiece to the second workpiece side by 1 mm or more, such that a component of a protective layer (104) is concentrated in a central portion of a stirred portion (105) when the backfilling process is completed.

Disclosed is a method for joining a metal member and a thermosetting resin member together with a thermoplastic resin interposed therebetween.

The present invention includes: a preparation step in which a stepped portion including step bottom and step side surfaces is formed along an inner circumferential edge of a jacket body; a placing step in which a sealing body is placed on the jacket body forming first and second butted sections; and a main joining step in which friction stir welding is performed by moving a rotary tool along the first butted section, while only a stirring pin of the rotary tool is in contact with only the sealing body. During friction stir welding, a central axis of rotation of the rotary tool is tilted towards a central side of the jacket body so that the angle of tilt with respect to the step side surface is equal to the angle of inclination of an outer circumferential surface of the stirring pin with respect to the central axis of rotation.

To provide a pellicle frame for FPD (flat Panel display), which can maintain the rigidity required for a pellicle for a large FPD (flat Panel display) even if the cross-sectional area of the frame is reduced and can enlarge the inner dimensions of the frame by reducing the cross-sectional area, and has high dimensional accuracy and flatness, and an efficient manufacturing method thereof. The present invention provides a pellicle frame for FPD (flat panel display) composed of an extruded material of an aluminum alloy powder sintered body containing Si: 20 to 40% by mass, Mg: 0.2 to 1.2% by mass, Cu: 2% by mass or less, Fe: 2% by mass or less, Cr: 0.4% by mass or less, the balance being Al and unavoidable impurities to provide.

A head piece and a welding tool, in particular an FSW tool, equipped therewith, and a welding method. The head piece has a through-opening for a plasticizing welding means, in particular a rotating welding pin. The head piece also has a profiled end face which faces the workpiece during welding and has end face regions of different heights and a sloping shoulder, which conducts the plasticized material of the workpiece and connects the end face regions.

Solid-state additive manufacturing processes for joining dissimilar materials and parts are described. Processes include feeding a first material through a hollow tool of a solid-state additive manufacturing machine to contact a second material, generating deformation of the materials by applying normal, shear and/or frictional forces using a rotating shoulder of the tool such that the materials are in a malleable and/or visco-elastic state in an interface region, and mixing and joining the materials in that region. The joining can include interlocks of various shapes in the interface region. One or multiple taggants can be included in deposited material and/or layers, which taggants respond when triggered by specific external stimulus, such as becoming visible upon subjecting to light of a particular wavelength, heating, electric field, and so on. Some taggants are capable of multiple levels of security effects which can be seen by the naked eye or by using special detectors/readers.

A welded blank assembly includes aluminum-based sheet metal blanks joined by a friction stir weld and an oxide removal zone on a surface of at least one of the blanks. The average thickness of an oxide layer in the oxide removal zone is less than elsewhere along the surface. The weld is at least partially located in the oxide removal zone and is substantially free from oxide remnants. A method of making a welded blank assembly includes removing at least a portion of an oxide layer on an aluminum-based sheet metal blank to form the oxide removal zone, then joining the blanks together at the oxide removal zone with a weld. Oxide regrowth in the oxide removal zone can be minimized and/or inhibited by welding within a pre-determined time after oxide removal, control of the local environment between oxide removal and welding, and/or use of an oxide inhibitor.

An additive manufacturing system for depositing an extrudate onto a substrate comprises a deposition head. The deposition head comprises a stirring tool, rotatable about an axis of rotation AR and comprising a tool distal end and a tool proximal end, axially opposing the tool distal end along the axis of rotation AR. The stirring tool defines a bore, extending from the tool proximal end to the tool distal end. The bore is configured to receive feedstock, biased toward the tool distal end. The deposition head also comprises a die, which is positioned adjacent to the stirring tool, defines a die axis AD1, and comprises a die distal end and a die proximal end, axially opposing the die distal end along the die axis AD1. The die axis AD1 is parallel with the axis of rotation AR of the stirring tool.

Shear assisted extrusion processes (ShAPE) for forming Metal-NCCF extrusions are provided. The processes can include: using a die tool, applying a rotational shearing force and an axial extrusion force to a feedstock material comprising a metal and NCCF (NanoCrystalline Carbon Films); and extruding a mixture comprising the metal and NCCF through an opening in the die tool to form the Metal-NCCF extrusion. ShAPE feedstock materials are provided that can include a metal and NCCF. Conductive solid material mixtures are provided that can include a metal and a NCCF. Portions of the metals and NCCF of the material mixtures can have an isotropic crystallographic orientation. Assemblies relying in part on conductivity can include: a conductive solid material mixture that includes: a metal; and a NCCF.