Assembly comprising at least two metal parts connected together by welding, for the manufacture of such an assembly and welding installation for implementing such a process

摘要

The invention relates to an assembly (1) and a process for the manufacture of this assembly, with a first and second parts (2, 3), the first part (2, 3) is formed in the cold, and the parts (2, 3) are provided with portions of the surface (20, 21) are parallel and in the bearing surfaces arranged at an angle with respect to these parts for their mutual support without a slot and are connected together by means of a weld bead (17) made by welding to the beam on the assembly joint (16). The portions of the surface (20, 21) are arranged staggered with respect to each other by an offset (19). One of the parts (2, 3) has a projection of the support (6), which forms the bearing surface of the first part (2). The parts (2, 3) are positioned relative to one another, so that the second part (3) form with the first part (2) in the section of the first part (2) the assembly joint (16) in which a density of dislocation of the base material is smaller than the density of dislocation of the structure in a deformation zone (18) formed on the first part (2) by cold forming.