A joining method for overlapping and joining a plate-shaped portion of a first metal member and a plate-shaped portion of a second metal member, where the first metal member and the second metal member are made of dissimilar materials, includes a first step of forming an insertion hole in each of the plate-shaped portion of the first metal member and the plate-shaped portion of the second metal member, where the insertion holes communicate with each other when the plate-shaped portions of the first metal member and the second metal member are overlapped with each other, a second step of disposing a first joining member made of a metal material on a side of the plate-shaped portion of the first metal member opposite to the second metal member, a third step of inserting a second joining member made of the same metal material as that of the first joining member into the first metal member from a side of the second metal member through the insertion holes while the plate-shaped portions of the first metal member and the second metal member are overlapped with each other, and a fourth step of welding the first joining member and the second joining member and joining the first metal member and the second metal member through the first joining member and the second joining member.

A workpiece composite and a method for producing the workpiece composite having at least two workpieces are provided. A first workpiece and a second workpiece are positioned relative to each other, and an integral connection between the end face of the first workpiece and the second workpiece is formed in a joint section by way of a thermal joining method. Prior to forming the integral connection, the first workpiece is provided with an indentation or embossing, which adjoins the end face, at least in the joint section, whereby the thickness of the first workpiece is reduced in the region of the end face.

A method for joining a plated steel sheet includes forming a plurality of protrusions, overlapping a first steel sheet, and performing arc welding, by which first and second steel sheets, at least one of which is a plated steel sheet, are arc welded. In the forming, the plurality of protrusions that is substantially perpendicular to an edge portion of the first steel sheet and is positioned along the edge portion is formed in an overlapping surface of the first steel sheet. In the overlapping, the first and second steel sheets are overlapped such that the protrusions protrude in a direction toward an overlapping surface of the second steel sheet. In the performing the arc welding, an arc welding is performed linearly in the edge portion of the first steel sheet or second steel sheet.

A system for assembling a plurality of components into an assembly is provided. The system includes an installation table, a first transfer robot, a second transfer robot, and an adhesive dispensing robot. The first transfer robot is configured to assemble some of the plurality of components into a first sub-assembly and transfer the first sub-assembly to the installation table. The second transfer robot is configured to assemble remaining ones of the plurality of components into a second sub-assembly, transfer the second sub-assembly to the installation table, and attach the second sub-assembly to the first sub-assembly. The adhesive dispensing robot is configured to apply an adhesive between the first sub-assembly and the second sub-assembly, after the second sub-assembly is attached to the first sub-assembly, to bond the second sub-assembly to the first sub-assembly.

A method for producing a welded steel blank (1) includes providing two precoated sheets (2), each comprising a steel substrate (3) having a precoating (5) on each of its two main faces (4), each sheet (2) comprising, on each main face (4), at a weld edge (14), a removal zone (18) in which the precoating (5) is removed over a removal fraction; and butt welding the sheets (2) using a filler wire (20) so as to create a weld joint (22) having an aluminum content Al.sub.WJ comprised between 0.1 wt. % and 1.2 wt. %. The composition of the wire (20) and the proportion of wire (20) added is such that the weld joint (22) has: (a) a quenching factor FT.sub.WJ such that FT.sub.WJ−0.96FT.sub.BM≥0, (b) a nickel content Ni.sub.WJ≤14−3.4×Al.sub.WJ and a chromium content Cr.sub.WJ≤5−2×Al.sub.WJ, where Al.sub.WJ is the aluminum content of the weld joint (22).

A joining connection with a weld seam running between a first metal component and a second metal component and produced by a beam welding method. The weld seam has a weld seam main section extending along a joining gap formed between the metal components, the weld seam has a weld seam starting section leading from the direction of the joining gap into the first or second component. The first or second component has a recess in the region of the weld seam starting section that is lowered in relation to the upper edges of the two components forming the joining gap, and/or the weld seam has a weld seam end section leading from the direction of the joining gap into the first or second component.

A shock absorbing member of the present disclosure is a shock absorbing member including a first hollow member (11) and a second hollow member (12) that are made of aluminum alloy and are weld joined to each other, in which a weld material and weld beads (W) do not project from a side on which a joined surface between the first hollow member (11) and the second hollow member (12) is located.

An automotive framework member 1 includes a first steel sheet 10, a second steel sheet 20, and a first weld metal part 40 joining an interface between the first steel sheet 10 and the second steel sheet 20, in which tensile strength of the first steel sheet 10 is 1.0 GPa or more and 1.6 GPa or less, tensile strength of the second steel sheet 20 is 1.8 GPa or more and 2.5 GPa or less, the first steel sheet 10 includes a groove part 18, the second steel sheet 20 is overlapped with the groove part 18, and a minimum Vickers hardness of a region within 4 mm of a periphery of the first weld metal part 40 of the second steel sheet 20 is 80% or more of a hardness of an outside of the region of the second steel sheet 20.

A welded steel part obtained by welding a first sheet with a second sheet, at least one with a coating of aluminum alloy. The welding uses a welding wire which, after melting and cooling, constitutes a weld bead connecting the first sheet to the second sheet and being part of said welded steel part. The respective peripheral edge of the first and second sheets are in a joggled edge type configuration in which the peripheral edge of the first sheet is arranged above, and on or near the upper face of an end portion of the peripheral edge of the second sheet which is extended by an inclined junction portion, at least one part of the upper face of the inclined junction portion delimits at least laterally with the edge of the peripheral edge of the first sheet a groove receiving the weld bead, the inclined joining portion extending by a welding portion in longitudinal continuity with the peripheral edge of the first sheet.

An automotive framework member 1 includes a first steel sheet 10, a second steel sheet 20, and a first weld metal part 40 joining an interface between the first steel sheet 10 and the second steel sheet 20, in which tensile strength of the first steel sheet 10 is 1.0 GPa or more and 1.6 GPa or less, tensile strength of the second steel sheet 20 is 1.8 GPa or more and 2.5 GPa or less, the first steel sheet 10 includes a groove part 18, the second steel sheet 20 is overlapped with the groove part 18, and a minimum Vickers hardness of a region within 4 mm of a periphery of the first weld metal part 40 of the second steel sheet 20 is 80% or more of a hardness of an outside of the region of the second steel sheet 20.