A tube assembly includes at least first and second tubes configured for coupling at respective ends. The first and second tubes each include a base material, and a weld interface at the respective end. The weld interface is proximate to an inner diameter and an outer diameter of the first and second tubes, and includes a weld interface segment extending therebetween. A work hardened weld assembly couples the base material of each of the first and second tubes. The work hardened weld assembly includes a weld fusion zone between the weld interfaces of the first and second tubes and the weld interface segments of the first and second tubes. The weld fusion zone is work hardened and at least the weld interface segments of the first and second tubes are work hardened between the work hardened weld fusion zone and the base material of the first and second tubes.

A positioning structure of a frame welding assembly for a metal product, the metal product is a holding plate or a holding basket made of metal mesh and contains: multiple bodies, each of the multiple bodies is folded in a square shape and includes multiple raised faces and multiple slots which are stamped on a peripheral side of each body respectively. Two adjacent of the multiple bodies are connected together, and the two adjacent bodies have multiple recesses and multiple protrusions respectively formed on two connection sides thereof so that the multiple recesses retain with the multiple protrusions individually before welding the two adjacent bodies together.

A lap fillet arc-welded joint produced by overlapping two metal sheets and welding an end portion of one sheet of the two metal sheets to a surface of the other sheet along the end portion of the one sheet includes a protruding curved potion being bead-shaped and protruding from the surface of the other sheet; and a weld toe positioned on a top portion of the protruding curved portion.

A method of forming a welded connection between a hub and a plate component in a transmission assembly is provided. The method includes providing the plate component which includes a radially extending portion and an opening in a connection region to the hub, forming a flare bevel with an axial extension that extends beyond a projection of a thickness of the radially extending portion of the plate component at the opening, locating the plate component with the flare bevel and at least a portion of the axial extension on the hub, welding in a recess formed between the flare bevel and the hub to connect the plate component to the hub with the weld, and removing at least a portion of the axial extension after the welding.

A friction stir welded structure includes first and second members. The first member has a base defining opposed first and second surfaces, and spaced first and second walls extending outwardly from the second surface of the base to define a receptacle therebetween. The second member includes an elongate rib extending from a root portion to a first tip portion, the root portion having a uniform root portion thickness and the first tip portion having a first tip portion thickness not greater than the root portion thickness. The first tip portion is sized for insertion into the receptacle and shaped conformally with the receptacle so that the first tip portion engages a closed end of the receptacle. A friction stir weld joint extends through the base and at least portions of the first and second walls of the first member and into the first tip portion of the second member, thereby to join the first and second members.

Described are devices and assemblies (e.g., precursors to a devices) that include a friction stir weld or a joint useful for forming a friction stir weld, the devices containing two metal components that form the joint at which the friction stir weld can be produced, as well as methods for producing a devices, assembly, joints, or friction stir weld as described.

A steel welding component with an aluminum or aluminum alloy coating, using a steel welding blank with an aluminum or aluminum alloy coating. The welding blank is composed of a steel substrate (1) and coatings (2, 2); the coating (2) comprises an intermetallic compound alloy layer (21) which contacts the substrate (1), and a metal alloy layer (22) on the intermetallic compound alloy layer (21); on at least one of the coating surfaces of the welding blank, the coating (2) within an area (3) to be welded of the welding blank has been totally removed, and an end face (23) of the coating (2) on the side of the coating within the area (3) to be welded removed has an angle of with a plane vertical to a surface (11) of the substrate (1) which is parallel to the welding seam, wherein is 0-80. Also provided are welding and preparation methods for the steel welding component. The steel welding blank prepared by the method ensures the tensile strength, elongation, and corrosion resistance of a hot-stamped welded joint.

The disclosure relates to a tip member configured to be coupled to a blade structure for a turbomachine. A body of the tip member includes: a first surface configured to engage a radially outboard end of the blade structure, a second surface positioned opposite the first surface, and at least one perimeter sidewall positioned between the first and second surfaces, wherein the at least one perimeter sidewall has an airfoil cross-section; and an opening passing through the body from the first surface to the second surface, and having a single directional orientation therebetween, wherein the opening is sized to receive a post positioned on the radially outboard end of the blade structure.

The disclosure relates to a tip member configured to be coupled to a blade structure for a turbomachine. A body of the tip member includes: a first surface configured to engage a radially outboard end of the blade structure, a second surface positioned opposite the first surface, and at least one perimeter sidewall positioned between the first and second surfaces, wherein the at least one perimeter sidewall has an airfoil cross-section; and an opening passing through the body from the first surface to the second surface, and having a single directional orientation therebetween, wherein the opening is sized to receive a post positioned on the radially outboard end of the blade structure.

A joint method includes a groove formation step of removing part of a first projection and part of the second projection to form a groove region between the first projection and the second projection, a first welding step of joining a first member and a second member to each other by butt welding, and a second welding step of filling the groove region by buildup welding. The groove formation step forms a first inclined surface in the first projection facing the groove region to be gradually distant from a joint position joined with the second projection so as to be closer to an outer surface of the first projection, and forms a second inclined surface in the second projection facing the groove region to be gradually distant from the joint position joined with the first projection so as to be closer to an outer surface of the second projection.