Conveners
Post-Processing: Post-Processing I
- Massimo Pellizzari (University of Trento, Dpt. Industrial Engineering)
Post-Processing: Post-Processing II
- Karl Neulinger (Hirtenberger Engineered Surfaces GmbH)
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Nils Stelzer (Aerospace & Advanced Composites GmbH)26/11/2019, 16:00Post-processing of AM partsOral PresentationAdditive manufacturing technologies allow manufacture of shapes that are not possible with conventional machining. This design freedom is very attractive for space hardware, as equipment performance could be significantly improved with increased shape complexity. Furthermore, conventional machining results in a high buy-to-fly ratio; i.e. more than 70% of the material is transformed to swarf,...Go to contribution page
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Faraz deirmina (Sandvik Additive Manufacturing)26/11/2019, 16:20Post-processing of AM partsOral PresentationIn this study, tempering behaviour of AISI H13 fabricated by Selective Laser Melting (SLM) in as-built and “austenitized and quenched” conditions are evaluated. Compared to the austenitized and quenched counterpart, secondary hardening peak is more pronounced and is shifted to a higher temperature in directly tempered H13. It is shown that the decomposition of retained austenite (RA), up to...Go to contribution page
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Wolfgang Hansal (Hirtenberger Engineered Surfaces)26/11/2019, 16:40Post-processing of AM partsOral PresentationWith the evolution of 3D printing of metals from the prototyping scale towards a serial production the different steps in the production chain have not only to be fully understood but also adjusted to each other and to the requirements of the final product. Among the different process steps, the post-processing of AM metal parts is a crucial element but nevertheless still an open issue at the...Go to contribution page
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Massimo Pellizzari (University of Trento, Dpt. Industrial Engineering, Via Sommarive 9, 38123 Trento, Italy)26/11/2019, 17:00Post-processing of AM partsOral PresentationThe AlSi10Mg alloy was fabricated by Selective Laser Melting (SLM) using different post processing conditions. Tensile and dilatometric specimens were obtained with longitudinal axis parallel to the building direction. A first set of samples has been directly aged in the as-built state (AB) while a second batch underwent solubilization annealing (SA) at 540°C for 60min just before artificial...Go to contribution page
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Cecilie Vase Funch (Technical University of Denmark (DTU))26/11/2019, 17:20Post-processing of AM partsOral PresentationThe selective laser melting process involves very high cooling rates and consequently results in non-equilibrium microstructures of the printed metal. Examples of this are the cellular sub-grain structure observed in austenitic stainless steels and the very fine hierachical martensite formed in Ti6Al4V titanium. Both stainless steels and titanium alloys are commonly heat treated in order to...Go to contribution page
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Giulio Maistro (Uddeholms AB)27/11/2019, 11:40Post-processing of AM partsOral PresentationHot isostatic pressing (HIP) is a well-established technology for reduction of residual porosity in cast materials as well as production of powder metallurgy tool steels. With the advent of additive manufacturing, especially for the medical and aerospace industry, HIP has become a standard treatment to close residual porosity or lack of fusion defects in order to increase the performance of 3d...Go to contribution page
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Stefan Thundal (Additive Innovation and Manufacturing Sweden)27/11/2019, 12:00Post-processing of AM partsOral PresentationSince 2 years or so AIM Sweden is working closely with Siemens Gas & Power in Duisburg with the goal to qualify the production of shrouded compressor impellers based on the EBM technology. This application sets up number of technical challenges that calls for solutions which are not to be found in the “std EBM toolbox”. AIM Sweden is well under way to do so and we look forward to share some...Go to contribution page