METHOD FOR LASER WELDING

• Main Authors: DAHMEN, Christian, STUHRMANN, Jan
• Format: Patent
• Language: English; French; German
• Published: 07.02.2024
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

A method is described for laser welding two joining partners (1d, 2d) made of a metal material and held together in a lap joint, wherein the first joining partner (1d) includes a joining flange (3) having a joint and the second joining partner (2d) includes a joining zone (6d) on a flat side, wherein for the process of laser welding, the first joining partner (1d) is held contacting the joining zone (6d) of the second joining partner (2d) with one side of its joining flange (3d), wherein between the two joining partners (1d, 2d), a gap (10d) widening in the direction pointing away from the side to which the laser is applied is provided and the laser beam (7) is directed in the fillet formed by joining zone (6d) and joining flange (3d) at an angle α of 1° to 45° in relation to the plane of the joining zone 6d and the welding is carried out so that the weld seam (12) formed extends into the gap 10d and in this way in the gap (10d) a gap base SB is formed, by which the opposing surfaces of the joining partners (1d, 2d) are spaced apart.