A method for working a first component and a second component comprises the following steps: providing the first component, which comprises a thermally sprayed electrically conductive layer, providing the second component, which has a longitudinally extended strip of copper, which at least in a first region has a thickness transversely to the longitudinal direction of more than 0.1 millimeter, arranging the strip and the layer one on top of the other, so that the first region of the strip and the layer have a contact region in common with one another, emitting a laser beam onto the contact region and forming a welded connection, which connects the strip and the layer to one another.

A joining method including an overlapping step of overlapping a front surface of a first metal member and a back surface of second metal member such that the front surface is opposed to the back surface; and a welding step of performing a laser welding and a MIG welding by using a hybrid welding machine including a preceding laser welding unit and a following MIG welding unit, in which the laser welding is performed by emitting a laser beam onto a front surface of the second metal member, the MIG welding is performed on an inner corner portion formed by the front surface of the first metal member and an end surface of the second metal member, and a target position for the laser beam from the laser welding unit is located against the second metal member relative to a target position for a MIG arc by the MIG welding unit.

A joining method including an overlapping step of overlapping a front surface of a first metal member and a back surface of second metal member such that the front surface is opposed to the back surface; and a welding step of performing a laser welding and a MIG welding by using a hybrid welding machine including a preceding laser welding unit and a following MIG welding unit, in which the laser welding is performed by emitting a laser beam onto a front surface of the second metal member, the MIG welding is performed on an inner corner portion formed by the front surface of the first metal member and an end surface of the second metal member, and a target position for the laser beam from the laser welding unit is located against the second metal member relative to a target position for a MIG arc by the MIG welding unit.

Disclosed is an assessment method for making an assessment of laser welding between first and second cylindrical metal members, wherein the first and second cylindrical metal members are arranged coaxially to define an overlap range where the first and second cylindrical metal members overlap each other; and wherein the laser welding is performed on the overlap range along a circumferential direction of the overlap range. The assessment method includes: during the laser welding, carrying out a measurement of a position of a contour of at least one of the first and second cylindrical metal members; and judging the occurrence or non-occurrence of a position deviation of the at least one of the first and second cylindrical metal members based on a result of the measurement.

The automotive vehicle structural part (30) includes at least a main panel (40) and a wheel casing (42), the main panel (40) and the wheel casing (42) being made of two distinct three-dimensional parts made of different materials attached to each other by welding.

The automotive vehicle structural part (30) includes at least a main panel (40) and a wheel casing (42), the main panel (40) and the wheel casing (42) being made of two distinct three-dimensional parts made of different materials attached to each other by welding.

A bonding method includes: an oxide-film forming step, on an irradiated surface, an oxide film having a film thickness corresponding to a first output and an irradiation time of an oxide-film-forming laser beam; a first reflected-laser-beam detection step of detecting a second output; a first absorptance computing step of computing a first absorptance for the oxide-film-forming laser beam; laser-beam switching step of switching the oxide-film-forming laser beam radiated onto the irradiated surface to a heat-bonding laser beam; and a heat bonding step of heating a first bonding surface until the temperature thereof reaches a predetermined bonding temperature, and bonding the first bonding surface to a second bonding surface.

A display panel and a method of restoring vertical dark lines of a display panel are provided. The display panel has at least one fan-out trace with a double-decked conducting wire structure. The fan-out trace includes a first conducting wire and a second conducting wire stack-up. An insulating layer is disposed between the first and second conducting wires to insulate and space the first and second conducting wires. For the method of restoring vertical dark lines of the display panel, forming at least four welds at an equal interval on the fan-out trace to electrically connect the first and second conducting wires.

According to one embodiment, a disk device includes a disk-shaped recording medium, a head which processes data on the recording medium, and a housing accommodating the recording medium and the head. The housing includes a base with a side wall, and a cover having a welded portion welded to the side wall by laser welding. The welded portion includes a first welded portion welded to a first region of the side wall and having weld beads with a first shape, and a second welded portion welded to a second region of the side wall and having welded beads with a second shape different from the first shape.

The present invention has as its object to provide a laser welded joint excellent in joint strength preventing a bead from cracking and comprised of exactly the number of weld beads required for joint strength and a laser welding method for the same in overlay laser welding of steel sheets forming multiple ring-shaped weld beads. The present invention is a laser welded joint excellent in joint strength preventing a bead from cracking and comprised of exactly the number of weld beads required for joint strength in overlay laser welding of steel sheets forming multiple ring-shaped weld beads, produced by a step of overlaying a plurality of metal sheets and forming a first weld bead and a step of firing a laser beam to successively form a further two or more weld beads at the outside of the first weld bead by laser irradiation, the surface hardness of the weld bead increasing from the inside bead to the outside bead.