A system, apparatus, and method in which an induction head is used to impinge an electromagnetic force field on a molten metal bead to shape same, e.g., to flatten same.

A device and a method for welding together conductor ends disposed on a component of an electric machine in a conductor end assembly. To be able to also process larger conductor end assemblies in a safe process, more rapidly and with considerably lower costs, the device includes an illuminating device for illuminating the conductor end assembly, an optical recognition device for recognizing the position of the illuminated conductor ends, a laser device capable of directing, depending on the recognized position, a laser beam onto each group of conductor ends, which is to be welded together, of the entire conductor end assembly, and a mount, by means of which the component is held stationary relative to the laser device during the welding process.

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.

A method for butt laser welding two metal sheets (2, 4) includes providing a first metal sheet (2) and a second metal sheet (4) and butt welding the metal sheets (2, 4) along a direction of welding. The butt welding step includes simultaneously emitting a first front laser beam (12) creating a first front spot (18) at the intersection with the first metal sheet (2), and generating a first front keyhole (19) in the first metal sheet (2) at the first front spot (18); a second front laser beam (14) creating a second front spot (20) at the intersection with the second metal sheet, and generating a second front keyhole in the second metal sheet (4) at the second front spot (20); and a back laser beam (16) creating a back spot (22) on the first and second metal sheets (2, 4), and generating a back keyhole (23A) in the first and second metal sheets (2, 4) at the back spot (22). The first and second front laser beams (12, 14) and the back laser beam (16) are configured in such a manner that at each moment in time, a solid phase region (25) and/or a liquid phase region (13, 23B) of the metal sheets (2, 4) remains between the first front keyhole (19) and the back keyhole (23A) and between the second front keyhole and the back keyhole (23A).

A method for producing a welded metal blank (16) includes cutting a first initial metal sheet (1) and a second initial metal sheet (3) from a first and second metal strip (4); joining the first and second initial metal sheets (1,3) by welding so as to obtain an initial welded metal blank (9), the initial welded metal blank (9) comprising a weld joint (10) joining the first and the second initial metal sheets (1,3); and cutting said initial welded metal blank (9) by a process involving metal melting so as to obtain at least one final welded metal blank (16) comprising a first metal blank portion (17) and a second metal blank portion (18) joined by a weld joint portion (19) consisting of a portion of the weld joint (10) obtained during the joining step.

While a laser-beam application position is moved along a locus which circularly or elliptically circles around a locus center so as to cross a weld line that is a boundary between a first metal plate and a second metal plate overlapped with each other, the locus center is moved in a direction parallel to a weld line. A moving direction of the laser-beam application position is set such that the laser beam is first applied to the first metal plate and then to the second metal plate when the laser beam passes through an unmelted zone of the first metal plate and the second metal plate. The unmelted zone is located downstream of a range through which the laser beam has already passed in the direction parallel to the weld line.

While a laser-beam application position is moved along a locus which circularly or elliptically circles around a locus center so as to cross a weld line that is a boundary between a first metal plate and a second metal plate overlapped with each other, the locus center is moved in a direction parallel to a weld line. A moving direction of the laser-beam application position is set such that the laser beam is first applied to the first metal plate and then to the second metal plate when the laser beam passes through an unmelted zone of the first metal plate and the second metal plate. The unmelted zone is located downstream of a range through which the laser beam has already passed in the direction parallel to the weld line.

A compressor comprises a housing; a motor and a cylinder in the housing; a crankshaft for transmitting rotation force of the motor to pistons of the cylinder for compressing refrigerant; a compressing space formed by an upper cylinder cover, a lower cylinder and the cylinder and the upper cylinder cover and the lower cylinder cover are also used to prop up the crankshaft. The upper cylinder cover is disposed between the motor and the cylinder. The upper cylinder cover includes an through-hole for holding the crankshaft. The upper cylinder cover includes a first side facing the motor and a second side facing the cylinder. An inner wall of the casing is laser welded with an outer periphery of the first side and/or an outer periphery of the second side of the upper cylinder cover.

The invention relates to a method for joining two components to one another by laser welding, wherein a first component and a second component are arranged adjacent to one another to form a component arrangement, in that the component arrangement has an irradiation surface which has a first radiation partial surface on the first component and a second radiation partial surface on the second component, wherein the irradiation surface is irradiated with a laser beam along an irradiation direction in a joining region. In the method, the irradiation surface has a gap in the joining region, the gap extending from the irradiation surface in the irradiation direction, wherein the first component and the second component are joined to one another by heat conduction welding.

The invention relates to a method for joining two components to one another by laser welding, wherein a first component and a second component are arranged adjacent to one another to form a component arrangement, in that the component arrangement has an irradiation surface which has a first radiation partial surface on the first component and a second radiation partial surface on the second component, wherein the irradiation surface is irradiated with a laser beam along an irradiation direction in a joining region. In the method, the irradiation surface has a gap in the joining region, the gap extending from the irradiation surface in the irradiation direction, wherein the first component and the second component are joined to one another by heat conduction welding.