VERFAHREN ZUR OBERFLAECHENBEHANDLUNG VON WERKSTUECKEN MIT LASERSTRAHLUNG

摘要

Described is a process for treating the surfaces of workpieces (12) by using laser radiation (10) to heat edge zones, in particular for treating shafts for motor vehicles. The process calls for a laser beam to strike the surface (13) of the workpiece at an angle of incidence which is other than zero, producing an oval light spot (14), the beam being moved at right angles to it. In order to be able to work at high speed and produce products of high quality, linearly polarized laser radiation (10) is used and, to optimize the transfer of energy into the workpiece (12), the angle of incidence ( alpha 2) in at least one sector (15) of the light spot (14) differs from the angle of incidence ( alpha 3) in the other sectors (e.g. 16) of the light spot (14).