A method for butt laser welding two metal sheets includes providing a first metal sheet and a second metal sheet and butt welding the metal sheets along a direction of welding. The butt welding step includes simultaneously generating a first front keyhole in the first metal sheet, generating a second front keyhole in the second metal sheet, and generating a back keyhole in the first and second metal sheets. The first and second front laser beams and the back laser beam are configured in such a manner that at each moment in time, a solid phase region and/or a liquid phase region of the metal sheets remains between the first front keyhole and the back keyhole and between the second front keyhole and the back keyhole.

A method for butt laser welding two metal sheets includes providing a first metal sheet and a second metal sheet and butt welding the metal sheets along a direction of welding. The butt welding step includes simultaneously generating a first front keyhole in the first metal sheet, generating a second front keyhole in the second metal sheet, and generating a back keyhole in the first and second metal sheets. The first and second front laser beams and the back laser beam are configured in such a manner that at each moment in time, a solid phase region and/or a liquid phase region of the metal sheets remains between the first front keyhole and the back keyhole and between the second front keyhole and the back keyhole.

A first member and a second member are formed of metal materials of the same type and a third member is formed of a material of a different type that is difficult to weld to the first member and the second member. The first member and the second member are welded to each other via a through hole with the third member interposed therebetween in a region corresponding to a first protrusion. For the first member and the third member, and the second member and the third member, each of respective outer peripheral portions of an overlapping portion of the first member and the third member and an overlapping portion of and the second member and the third member is welded.

A component includes a first part in which a first junction part is configured, a second part in which a second junction part and a cross junction part intersecting the second junction part are configured. The second junction part and the first junction part are welded at a preceding weld. The component also includes a third part in which a third junction part is configured. A part of the third junction part is overlapped with an opposite part of the first junction part, a remaining part of the third junction part is overlapped with the cross junction part, and the first part and the second part are welded to the third part at a following weld at each of the overlapped parts.

A component includes a first part in which a first junction part is configured, a second part in which a second junction part and a cross junction part intersecting the second junction part are configured. The second junction part and the first junction part are welded at a preceding weld. The component also includes a third part in which a third junction part is configured. A part of the third junction part is overlapped with an opposite part of the first junction part, a remaining part of the third junction part is overlapped with the cross junction part, and the first part and the second part are welded to the third part at a following weld at each of the overlapped parts.

The invention relates to a method for producing a component of an electromechanical transducer that has windings, as well as to the component itself.

A method for manufacturing a dissimilar metal joint product including joining a first member made of non-ferrous metal and having an end surface and a first surface adjacent to the end surface and a second member made of steel, the method includes: spraying a metal powder capable of being joined to the second member to the end surface and the first surface of the first member at a low temperature and at a high speed to form a coating to extend over the end surface and the first surface; disposing the first member and the second member such that the coating and the second member are close to or contact with each other; and performing fillet welding between the coating and the second member.

The present disclosure discloses a welding gas shielding device, a laser filler wire welding system and a welding method. The welding gas shielding device comprises an upper shielding gas dragging cover device and a back shielding gas device. The laser filler wire welding system comprises a welding gas shielding device, a height adjusting mechanism, a wire feeding system, a laser system, a numerical control console and the like. The welding gas shielding device for narrow gaps made of dissimilar materials is reasonable in structural design, gas shielding can be carried out on the upper area and the lower area of a welding area in the welding process of the narrow gaps made of dissimilar materials, the problem that laser narrow-gap welding gas shielding is insufficient and unstable is solved, the weld joint cooling speed can be adjusted and controlled, the shielding effect is enhanced, and the welding efficiency is improved.

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.

The disclosure relates to methods and systems for deep welding a workpiece, a surface of the workpiece being irradiated by a first laser beam and a second laser beam. In a workpiece surface plane (OE) a first beam width B1 of the first laser beam is larger than a second beam width B2 of the second laser beam and in at least the workpiece surface plane (OE) the second laser beam lies inside the first laser beam. The intensity of the first laser beam alone is sufficient to produce a keyhole in the workpiece. The keyhole produced in the workpiece has a width KB in the workpiece surface plane (OE), KB substantially equaling B1, and B2≤0.75*KB. The methods and systems provide good seam quality, high penetration depth, and high welding speed.