Edge welding of laminated steel structure by pulsed Nd:YAG laser

The construction of the electric motor components consists of laminated electrical steel structure. However this design needs to fasten the separated sheets. One of the possible joining processes is the welding technology. Neverthless the welded seam geometry influences the magnetic loss during the operation of the motor. The smaller the depth of the seam, the less the magnetic loss. Next to the conventional welding the laser welding is an alternative technology to fix the laminated structure. In this research work the effect of the laser parameters on the geometry of the welded seam were investigated applying a pulsed Nd:YAG laser.