The present invention includes: a primary joining process in which a coarse portion having a predetermined width is formed in the vicinity of a step side face within a plasticized region while the rotary tool is being moved one round along a first butted portion to perform friction stirring in a state that a tip of a tip side pin of a rotary tool being rotated is inserted to the same depth as or slightly deeper than a step bottom face and an outer circumferential face of a base side pin is in contact with a front face of a sealing body and the tip side pin is slightly in contact with at least an upper portion of a jacket body and an inspection process in which a passed position of the tip side pin is specified by performing, a flaw detection to detect the coarse portion.

A method for producing an overlap composite material from sheet metal is described, wherein a first sheet of a first metal and a second sheet of a second metal, which has a lower strength than the first metal, are positioned one above another in an overlapping manner in an edge region, and are then joined by rolling. The first sheet has a wedge-shaped edge in cross-section. The second sheet is to be positioned with its edge on a side surface of the first sheet formed by the wedge-shaped edge. The side surface formed by the wedge-shaped edge of the first sheet has a greater width than the side surface of the edge of the second sheet positioned on the said side surface of the first sheet, and, after positioning, the sheets are joined by rolling.

The present invention provides a lap fillet arc welding joint including a first metal sheet, a second metal sheet, and a weld bead. A region of the first metal sheet on one end side is bent. In a first direction, a position of a tip end of the bent region of the first metal sheet overlaps a region of the second metal sheet on one end side. In a second direction, an amount of deviation between a central axis of a region connected to the bent region of the first metal sheet and a central axis of the region of the second metal sheet on one end side is ½ times or less of average sheet thicknesses of the first metal sheet and the second metal sheet. A joint portion length is two times or more of the sheet thickness of the second metal sheet.

A terminal-equipped electric wire manufacturing method includes: an electric wire installation step of inserting a core-wire exposed part between inner wall surfaces of piece parts of a core-wire connection body, the core-wire exposed part having a core-wire diameter smaller than an interval between the inner wall surfaces of the piece parts; a melting step of melting the core-wire exposed part and the core-wire connection body by emitting a laser beam to the core-wire exposed part and the core-wire connection body from a free end side of each piece part; and a fixation step of fixing the core-wire exposed part and the core-wire connection body thus melted, with the emission of the laser beam stopped.

A variable gage blank is formed from a set of components joined by a joining process. The set of components include a web, a first flange, and a second flange. The components have respective thicknesses. The first flange and the second flange may be modified to include a transition region with a variable thickness that terminates on an edge having a thickness substantially similar to a thickness of the web.

Provided is a brazed aluminum member brazed with a member formed of a brazing sheet, in which two or more grooves are provided on a surface of the brazed aluminum member in a fillet forming area, a groove depth (D1) of the grooves is 0.005 mm to 0.50 mm, a groove width (W1) of the grooves is 0.005 mm to 0.50 mm, a ratio (W1/D1) of the groove width (W1) to the groove depth (D1) is 10.00 or less, and a space (P1) between adjacent grooves is 0.00 mm to 0.30 mm. The present invention can provide an aluminum material and a method for producing a brazed product that can secure good brazing properties even when the clearance between the jointed members is large in the case where the aluminum material is brazed without using a flux.

Provided is a brazed aluminum member brazed with a member formed of a brazing sheet, in which two or more grooves are provided on a surface of the brazed aluminum member in a fillet forming area, a groove depth (D1) of the grooves is 0.005 mm to 0.50 mm, a groove width (W1) of the grooves is 0.005 mm to 0.50 mm, a ratio (W1/D1) of the groove width (W1) to the groove depth (D1) is 10.00 or less, and a space (P1) between adjacent grooves is 0.00 mm to 0.30 mm. The present invention provides an aluminum alloy material and a method for manufacturing a brazed body that can secure good brazing properties even when the clearance between the jointed members is large in the case where the aluminum material is brazed without using a flux.

A method for watertight welding, and components formed using that welding method, wherein the welding method includes providing a first component half with a groove and a protruding ridge located therein, providing a second component half with a tenon shaped to match the profile of the groove, disposing the tenon inside the groove such that the tenon contacts the protruding ridge, applying an ultrasonic power source near the groove to melt the protruding ridge, and applying opposing vertical force to the first component half relative to the second component half, such that the protruding ridge wedges in a bonding seam between an outside surface of the tenon and an inside surface of the groove.

A method of providing a tool with a conformal cooling passage includes rough machining a cavity generally corresponding to a manufactured part shape using CAD data. Conformal cooling slots are cut in the cavity using the CAD data. The conformal cooling slots are welded shut using the CAD data to provide conformal cooling passages. A class A surface is machined over the conformal cooling passage and corresponds to a finished manufactured part shape using the CAD data.

An enclosed heat sink with a side wall structure is provided. The side wall structure includes a welding body having a first welding plane and a side wall structure having a second welding plane. The first welding plane and the second welding plane are pressured and welded to each other, such that the welding body and the side wall structure encapsulate a cavity. A width of the second welding plane is smaller than a width between two side surfaces of the side wall structure.