Laser die-cleaning technique and the system for powder-related manufacturing applications

Fraunhofer ILT partner has developed a laser-cleaning technique to be integrated in the die of Micro-FAST machine. The powder of the work piece can partially fuse with the material of the punch due to the high pressure and high temperatures during the sintering process: high viscosity of the liquid metal can lead to a significant build-up of residual layer on the punch and die in small cavities and, consequently, the inspection and cleaning of the punch is necessary to assure a high quality of the produced part. Cleaning stations consist of following modules: - Grabbing and moving the die-set - Station with air nozzle for cleaning with compressed air - Steering unit for moving the laser beam on to different parts of the cavity - Variable focus shifter for different beam diameters - Tool station for in-cavity cleaning