A stator of an electric rotary machine includes: a stator core; and a coil including a plurality of first coil segments and a plurality of second coil segments. An end part of the projection part of the first coil segment is joined with an end part of the projection part of the second coil segment through laser welding in a state of abutting to the end part of the projection part of the second coil segment. And abutting portions abutting to each other between the projection part of the first coil segment and the projection part of the second coil segment include joining surfaces joined with each other and engaging surfaces engaged with each other and orthogonal to the joining surfaces.

Using hydrogen in the shielding gas during laser welding is counter-intuitive to standard formulation design practices which often strive to limit or eliminate hydrogen from the shielding gas for laser welding (or from the welding arc and weld pool for other welding methods). The present disclosure is directed to a laser welding technique that utilizes hydrogen in the shielding gas to limit the production of slag, oxides, or silicates during welding or additive manufacturing.

In a method for joining different type of metals, an Al-based base material (2) made of an Al alloy or pure Al and a Cu-based base material (3) made of a Cu alloy or pure Cu are joined to each other. The Al-based base material (2) and the Cu-based base material (3) are joined to each other by laser welding for melting and solidifying a portion irradiated with laser light using a filler metal (5) made of an Al alloy containing at least one of Si and Cu.

In manufacturing method of shunt resistor according to the present invention, at least one of first and second conductors that is thicker than a resistance alloy plate member includes a joining surface abutted to the resistance alloy plate member with their edges on one side in a plate-thickness direction being aligned with each other, a first inclined surface that is gradually located on one side in the plate-thickness direction from the joining surface toward the side opposite to the resistance alloy plate member in the plate-surface direction, and a first plate surface extending to the side opposite to the resistance alloy plate member in the plate-surface direction from the first inclined surface. Electron beams or laser is emitted to the joining surfaces of the conductor having the larger thickness and the resistance alloy plate member from one side in the plate-thickness direction to weld the joining surfaces.

Firstly, an upper base material is disposed above a lower base material. Secondly, a laser beam is irradiated so that an area irradiated with a laser beam at a time of melting start is formed on only an upper surface of the upper base material or on only both the upper surface and an end surface of the upper base material, whereby the end surface of the upper base material and the lower base material are fillet welded. With the end surface as a reference, a side the upper surface and the lower surface are positioned is a first side, and an opposite side of the first side is a second side. The laser beam is set such that an intensity of the laser beam is lower toward the second side from the first peak area within the irradiation area of the laser beam.

Firstly, an upper base material is disposed above a lower base material. Secondly, a laser beam is irradiated so that an area irradiated with a laser beam at a time of melting start is formed on only an upper surface of the upper base material or on only both the upper surface and an end surface of the upper base material, whereby the end surface of the upper base material and the lower base material are fillet welded. With the end surface as a reference, a side the upper surface and the lower surface are positioned is a first side, and an opposite side of the first side is a second side. The laser beam is set such that an intensity of the laser beam is lower toward the second side from the first peak area within the irradiation area of the laser beam.

Connector assemblies that may be used to connect a cable to one or more contact tails of an electrical connector are disclosed. Some connector assemblies may include a wire extending from a cable and attached to an edge of a contact tail of a signal conductor. At least a portion of the wire may be flattened to form a planar surface that is attached to a corresponding planar surface of the edge of the contact tail. Moreover, some connector assemblies may include a wire extending from a cable that is attached to an edge of a contact tail via a metallurgical bond extending along at least a portion of an attachment interface between the wire and the contact tail.

A laser welding head with movable mirrors may be used to perform welding operations, for example, with wobble patterns and/or seam finding/tracking and following. The movable mirrors provide a wobbling movement of one or more beams within a relatively small field of view, for example, defined by a scan angle of 1-2. The movable mirrors may be galvanometer mirrors that are controllable by a control system including a galvo controller. The laser welding head may also include a diffractive optical element to shape the beam or beams being moved. The control system may also be used to control the fiber laser, for example, in response to the position of the beams relative to the workpiece and/or a sensed condition in the welding head such as a thermal condition proximate one of the mirrors.

A laser welding head with movable mirrors may be used to perform welding operations, for example, with wobble patterns and/or seam finding/tracking and following. The movable mirrors provide a wobbling movement of one or more beams within a relatively small field of view, for example, defined by a scan angle of 1-2. The movable mirrors may be galvanometer mirrors that are controllable by a control system including a galvo controller. The laser welding head may also include a diffractive optical element to shape the beam or beams being moved. The control system may also be used to control the fiber laser, for example, in response to the position of the beams relative to the workpiece and/or a sensed condition in the welding head such as a thermal condition proximate one of the mirrors.

A vehicle pillar structure and a method for manufacturing a vehicle pillar in which, in a pillar framework, a member is easily disposed on a surface facing a transparent panel in an overlapping manner, while reducing the width of the pillar framework, and a corner butt portion on the side of the transparent panel has increased welding accuracy are provided. A flange of an outer panel and a flange of an inner panel are welded by spot welding. An end surface of a front end of the inner panel is butted against an inner surface end of the outer panel, and is welded thereto by laser welding, such that welding beads are thereby linearly formed at established intervals.