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Efficient optimization of the debinding and sintering of non-beam based additive manufactured components

 
: Quadbeck, P.; Strauß, A.; Riecker, S.; Andersen, O.; Kieback, B.

European Powder Metallurgy Association -EPMA-:
Euro PM2018 Proceedings : 14 – 18 October 2018, Bilbao, Spain
Shrewsbury: EPMA, 2018
ISBN: 978-1-899072-50-7
International Powder Metallurgy Congress and Exhibition (Euro PM) <2018, Bilbao>
Englisch
Konferenzbeitrag
Fraunhofer IFAM, Institutsteil Pulvermetallurgie und Verbundwerkstoffe Dresden ()

Abstract
Non-beam based additive manufacturing methods of metal components typically make use of organic binder and additives, which need to be thermally removed prior to sintering. However, the parameterisation of such processes is not trivial, since decomposition of the organic components and the subsequent thermochemical reactions between process atmosphere and metal parts need consideration. Therefore, an in-situ monitoring instrument has been introduced which uses infrared spectroscopy and mass spectrometry in debinding furnaces in order to understand the decomposition of the organic components and the subsequent thermochemical reactions between process atmosphere and metal component. This method enables an efficient optimization of the temperature-time schedules and needed atmosphere composition in order to realize dense components with low contamination levels. In the contribution, the parameterisation routine will be shown and the achievable properties will be illustrated by various examples of components out of stainless steel 316L.

: http://publica.fraunhofer.de/dokumente/N-582561.html