Assessment of the machinability of additively manufactured steels

The conventional production based on subtractive machining produced a huge amounts of material scraps. This is economically and environmentally unsustainable for the companies which nowadays are looking for alternatives to conventional machining processes, such as Additive Manufacturing technologies. This work is an experimental work that aims to analyze the Assessment of the machinability of additively manufactured steels achieving the following goals : • Comparison of AM and conventional materials: the purpose is to verify the existence in literature a specific experiment that shows the better machining settings to work the additive manufactured Stainless steel AISI 304, but during the investigation, it has been realized that in the literature there isn’t a similar experiment with a direct comparison about machinability AM AISI 304 and the conventional one. In the article “Cutting forces analysis in additive manufactured AISI H13 alloy”of Montevecchi, N. Grossi, H. Takagi, A. Scippa, H. Sasahara, and G. Campatelli, it is compared the machinability of AISI H13 AM with the conventional one, a comparison quite similar to the comparison that is proposed in this work, showing that the AM material results harder to be machined. Additionally, the indicator of the machinability used is the cutting force correlated with the feed for tooth. • Comparison of cutting tools from KENDU (a tools maker): This task aims to verify which is the best cutting tools solution in order to machine the AM manufactured component, preserving a good surface quality of the piece in terms of roughness. In the literature, there aren’t papers that show an investigation in order to understand what is the best coating tool to machine AISI 304 AM components. But in some machining experiments with different workpiece material, they use for milling operation of AM components the TiAlN coating tool • Comparison of toolholders from LAIP (a toolholders maker): this task is carried out to understand the best choice in terms of toolholders that is more suitable to machine AM components through milling side operation, preserving a good quality surface of the piece.