B. Brenner, S. Bonss, M. Seifert, F. Tietz, Fraunhofer IWS, Dresden, Germany
The paper will give an overview about new technological and technical developments for laser hardening processes and their industrial use in Germany.
Special attention will be paid to the use of High Power Diode Lasers (HPDL). From the technological point of view, different methods for avoiding annealing zones between the hardening tracks, avoiding oxidation, the tailoring of the laser energy distribution to the local heat conduction and strategies for a wear optimized treatment are considered. The successful industrial use of these developments will be described at turbine blades for steam turbines, cylinder liners, several types of tools, turbo charger shafts, needles for knitting machines and components of diesel engines.
Finally, a new machine system, consisting of two simultaneous co-operative working robots and two 6 kW-HPDL and equipped with PC-controlled flexible beam shaping systems for the surface hardening of big 3D-shaped machine components, will be presented.
Summary: The paper gives an overview about new technological and technical developments for laser hardening processes and their industrial use in Germany.
Special attention is paid to the use of High Power Diode Lasers (HPDL). From the technological point of view different methods for avoiding annealing zones between the hardening tracks, for avoiding oxidation, the tailoring of the laser energy distribution to the local heat conduction and strategies for a wear optimized treatment are considered. The successful industrial use of these developments will be described at turbine blades for steam turbines, cylinder liners, several types of tools, turbo chargers shafts, needles for knitting machines and components of diesel engines.
Finally a new machine system, consisting of two simultaneous co-operative working robots and two 6 kW-HPDL and equipped with PC-controlled flexible beam shaping systems for the surface hardening of big 3D-shaped machine components is presented.
