For the first time, highly complex lattice structures that, for example, can be used in lightweight construction applications, can be (economically) manufactured through Additive Manufacturing. Lattice structures are very fine geometries, with strut diameters of < 300 µm. For this reason, the fabrication of such geometries requires particularly high resolution and accuracy. In this MTL, we will focus on the entire process chain of Laser Powder Bed Fusion (LPBF), a metal powder bed-based 3D printing process. The powdery material has powder particle sizes of approximately 15 – 45 µm.
During the subsequent melting of the powder material by means of laser radiation, deviations from the computer-generated target CAD geometry naturally occur. This deviation essentially results from the melt pool formation and size, which depends on a wide variety of influencing factors.
Here’s what you’ll do in this lab:
- Gain a basic understanding of AM, with a focus on metal materials
- Go through the entire LPBF process chain using the example of lattice structure manufacturing
- Acquire a deeper understanding of the entire LPBF process chain:
- CAD file
- Manufacturing process
- Quality assurance