In a vehicle body structure, an end portion of a first vehicle body member having a plate shape is coupled to a second vehicle body member having a plate shape. The first vehicle body member is made of a first metal and the second vehicle body member is made of a second metal. The vehicle body structure includes a third vehicle body member made of the first metal. The third vehicle body member includes an interposed portion having general portions and a convex portion. The convex portion has a weld-joint portion configured to be joined to the end portion of the first vehicle body member by welding. Each of the general portion has a swage-joint portion configured to be swaged and jointed to the second vehicle body member in a circular shape viewed from a thickness direction, and a cutout portion.

A spot welded member includes a spot weld formed by holding a sheet stack of multiple steel sheets between a pair of electrodes and spot-welding the sheet stack, in which at least one of the multiple steel sheets is a high-strength zinc-based coated steel sheet having a tensile strength of 780 MPa or more, the high-strength zinc-based coated steel sheet having a coating with an Al content of 0.5% or more by mass, and in which the heat shock region of the spot weld outwardly extending from an edge of a corona bond area includes a coated layer including an FeAl alloy layer having an average thickness of 0.3 ?m or more and a zinc-based coated layer having an average thickness of 2.0 ?m or more on the FeAl alloy layer at the interface between the base steel sheet of the high-strength zinc-based coated steel sheet and the coating.

This heat exchanger includes fluid circulation channels extending lengthwise along a first axis, and layers that are flat and superposed on one another along a second axis. To improve performance, each layer is made up of metal strips so the strips a layer all extend lengthwise perpendicular to the second axis and adjacent one another, without necessarily touching. Each channel is jointly defined by first through third layers, the second being intercalated, along the second axis, directly between the first and third layers so each channel is delimited by a face of the first and third layers and edges of the second layer running parallel to the first axis and transversely to the second layer, these edges being formed by strips of this second layer fusion-welded to the first and third layers in zones extending along the length of the channel and situated on either side of the channel.

Heating element for user-touchable areas in a vehicle with a foamed carrier material in which at least one heating conductor, which comprises an electrical insulation, is embedded, and with connecting conductors which are electrically connected to the ends of the heating conductor via at least one connection part and form an electrical feed line. The at least one connection part is arranged within the foamed carrier material and the connection part is foam-covered in an electrically insulating manner by the carrier material. The connection part is brought into electrically conductive contact at least partially with the respective connection end of the heating conductor due to applied pressure and/or applied heat, at least partially destroying the electrical insulation in the region of the connection part. Furthermore, a method for producing such a heating element using a mold tool is indicated.

The present invention is provided with a roof side rail, a side outer panel that is formed of a dissimilar metal material having a higher electrical conductivity than the roof side rail, and a metal layer that is formed of the same metal material as the roof side rail and is disposed between the roof side rail and the side outer panel. Forming a nugget, which is a joint portion, between the roof side rail and the metal layer by carrying out resistance welding with the metal coating disposed between the roof side rail and the side outer panel makes it possible to accommodate the enhanced strength of an iron member and to render prepared hole processing unnecessary.

A packaged semiconductor device has a plurality of leads. A respective lead is to be welded to an electrical coupling that has a substantially rectangular end section. The end section has a width that is greater than a width of the respective lead. The respective lead is aligned within the width of the end section, such that the respective lead extends in a direction substantially perpendicular to the width of the end section. With the respective lead and the end section aligned, the respective lead is welded to the end section.

Devices and methods for resistance-welding a metallic component to a sandwich sheet having a thermoplastic layer disposed between two metallic cover layers may involve heating a region of the sandwich sheet to be welded such that the thermoplastic layer softens. The cover layers of the sandwich sheet may then be compressed so as to displace the thermoplastic layer from the region of the sandwich sheet to be welded. Electrical circuitry may then be employed to interconnect the metallic cover layers and the metallic component by passing a current through a pair of electrodes positioned on opposing sides of a combination including the sandwich sheet and the metallic component.

The method for manufacturing a laminated metal foil (1) according to the present invention includes: a first step of forming, in a weld site (A) of laminated layers of a metal foil (2), by the use of a cutter (C) whose longitudinal cross-sectional shape is a substantially V-shape, a notch (3) that is linear in a planar view and penetrates the laminated layers of the metal foil (2) in a lamination direction (S), to cause the laminated layers of the metal foil (2) to bond to each other along the lamination direction (S) at ends (3a) of a linear notch; and a second step of bringing an electrode (E) for resistance welding into press-contact with the weld site (A) and then energizing the weld site (A) via the electrode (E), to perform resistance welding on the laminated metal foil (1).

A frame member is a high-tensile steel member included in a frame. The frame is a part of a body structure of a body of an automobile. The frame member includes a plate-like attachment for abutting other member of the automobile. The attachment includes a welding part configured to be welded to the other member. The welding part is thinner than other parts of the attachment.

A spot welded joint in which a high CTS is obtained even if including one or more high strength steel sheets and a method of welding of the same, that is, a spot welded joint 1 including a plurality of steel sheets, wherein one or more steel sheets is a tensile strength 750 to 2500 MPa high strength steel sheet and, at a cross-section in the sheet thickness direction of the steel sheets, when defining superposed surfaces of a high strength steel sheet S1 arranged at an outermost side and another steel sheet 1B as the plane A and defining a plane passing through a point of one-half of a distance between a nugget end position E of a high strength steel sheet S1 side on the line L1 in the sheet thickness direction and a crossing point O of the plane A and the line L1 and parallel to the plane A as the plane B, at a square area SA of sides of 30 m centered about a crossing point X of a line L2, which is separated by 250 m to the heat affected zone side from a tangent at any position on a nugget end line NEL sandwiched between the plane A and plane B and parallel to that tangent, and a line L3 vertical to L2 included in a heat affected zone 4 having a high strength steel sheet S1 as a base material, an average value of widths of the blocks formed from lath martensite is 0.5 to 7.0 m.