Raw material reprocessing for cost-efficient multi-material production
The MULTITRENN technology project, which is decisive for the future of additive multi-material manufacturing, dealt with the recycling of powder materials in the multi-material laser beam melting process (LBM process). The aim was to recycle unsolidified metal powder after the construction process to be reused for further construction jobs. This is because, in contrast to the processing of just one powder material, the metal powders mix to a certain extent in multi-material production and must be separated by type as far as possible. Particle sizes of less than 100 µm and the great similarity of the materials used prevent the direct application of sorting processes from the recycling industry.