A die for a terminalized electric wire is provided with a first electrode, a hole forming jig, an electric wire pressing jig which surrounds a periphery of the first electrode, a second electrode and conductor accommodation parts. The conductor accommodation parts are recessed in molded inner wall surfaces at both sides of the electric wire pressing jig which holds a superposed configuration part in which the end side is superposed on the root side of the annular conductor in the vertical direction. A part of a molten conductor of the superposed configuration part flows into the conductor accommodation parts.

A die for a terminalized electric wire is provided with a first electrode, a hole forming jig, an electric wire pressing jig which surrounds a periphery of the first electrode, a second electrode and conductor accommodation parts. The conductor accommodation parts are recessed in molded inner wall surfaces at both sides of the electric wire pressing jig which holds a superposed configuration part in which the end side is superposed on the root side of the annular conductor in the vertical direction. A part of a molten conductor of the superposed configuration part flows into the conductor accommodation parts.

In order to further improve a method for joining a multilayer component (10) to another component (11) in a way that allows the multilayer component (10) to be mechanically and electrically joined to other elements, it is provided that an intermediate layer (14) of the multilayer component (10) be displaced in the region of the joining site (32), and that the two outer structural elements (12, 13) of the multilayer component be joined to one another by applying an electric voltage; and that the other component (11) be joined as a fastening element to the multilayer component (10) in the region of the joining site (32).

A method can be used to produce a component from a sandwich material in sheet or strip form, which sandwich material comprises at least two metallic surface layers and a plastic layer disposed between the metallic surface layers. The method may involve at least partially heating the sandwich material along an edge region to soften the plastic in the edge region. The plastic may then be substantially completely displaced out of the edge region by exerting a force on at least one of the metallic surface layers. In this way a plastic-free edge region is produced in which the metallic surface layers are in contact in sub-regions or at points. Further, a component comprised of a sandwich material may include at least two metallic surface layers and a plastic layer disposed between the metallic surface layers. The sandwich material may have, at least along one edge, a plastic-free region in which the metallic surface layers are in contact in sub-regions or at points.

A method can be used to produce a component from a sandwich material in sheet or strip form, which sandwich material comprises at least two metallic surface layers and a plastic layer disposed between the metallic surface layers. The method may involve at least partially heating the sandwich material along an edge region to soften the plastic in the edge region. The plastic may then be substantially completely displaced out of the edge region by exerting a force on at least one of the metallic surface layers. In this way a plastic-free edge region is produced in which the metallic surface layers are in contact in sub-regions or at points. Further, a component comprised of a sandwich material may include at least two metallic surface layers and a plastic layer disposed between the metallic surface layers. The sandwich material may have, at least along one edge, a plastic-free region in which the metallic surface layers are in contact in sub-regions or at points.

A welding electrode for use in engaging an aluminum alloy workpiece during a spot welding process has a weld face that includes a base surface and a plurality of circular ridges that project outwardly from the base surface. The circular ridges are blunted, and their presence on the weld face provides the first welding electrode with several useful capabilities, including the ability to establish better mechanical and electrical contact with the aluminum alloy workpiece.

A welding electrode for use in engaging an aluminum alloy workpiece during a spot welding process has a weld face that includes a base surface and a plurality of circular ridges that project outwardly from the base surface. The circular ridges are blunted, and their presence on the weld face provides the first welding electrode with several useful capabilities, including the ability to establish better mechanical and electrical contact with the aluminum alloy workpiece.

A one-side spot welding device includes a base which is formed in a cylindrical shape, a welding head and a welding tip. The base has a push rod operable in an upward and a downward direction with respect to the base and has a slide groove in an upper inner circumferential surface thereof. The welding head is installed at an upper side of the base so as to be slidable in a radial direction and equally divided in a circumferential direction so as to include a plurality of unit welding heads in close contact with one another. The unit welding heads are capable of being spaced apart from one another in the radial direction by the push rod. The welding tip is formed in a cylindrical shape so as to be configured at an outer circumference of the base, operates in an upward and a downward direction and is capable of applying welding electric current to the welding head.

A welded shaped steel manufacturing device for weld-connecting a butt portion of a web member having an end butting perpendicularly against a flange member and thereafter correcting in shape the flange member subjected to thermal deformation caused by heat input during welding, the device includes: a corrective device including flange-member correcting rollers arranged for respective ends of the flange member, each configured to press each end on a web-member side of the flange member so as to correct the thermal deformation over a range of the flange member from each end thereof to the butt portion thereof against the web member, and web-member supporting rollers configured to support a web surface of the web member, wherein the flange-member correcting rollers arranged for the respective ends of the flange member apply independent pressures to the respective ends so as to correct the thermal deformation.

An overlapped body 10 includes at least three steel plates 1a, 1b and 1c and in which at least one steel plate interface 2a has a contact resistance different from the contact resistance of another steel plate interface 2b. A molten pool is formed at the steel plate interfaces so as to join the steel plates 1a, 1b and 1c, and an energization point 5 is formed at the steel plate interface 2b having the largest contact resistance. Initial spot welding is performed under a condition in which a branch current is generated in the energization point 5 so as to form the molten pool. By doing so, it makes it difficult to generate the expulsion and surface flash at the steel plate interface where resistive heating is large and form the molten pool having a sufficiently large size at the steel plate interface where resistive heating is small.