Future Market Additive Manufacturing for Automotive
To finish the part both surface vibration grinding and micro machining are applied. As expected, the as build rough EBM surface proves to be challenging for both processes resulting in Ra values of around 3,6 μm. Using equal finishing operations on the LBM part yields a polished surface with Ra values below 0,1 μm.
The second Ampower Insights closes with an evaluation of the cost structure and lead time of the process chain including pre- and post-processing. The LBM technology proves to be more cost efficient, if multi laser systems are employed. The thin walled structure leads to lower effective build rates on the EBM machine. It turns out that the fast lead time of around 25 days is a game changing benefit of additively manufactured automotive parts such as the reviewed tail pipe blend compared to traditional tool-bound production.