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Altering Powder Characteristics For High Density Components Fabricated Via Binder Jetting Additive Manufacturing

  • : Simon Hoeges1, Damian Kolodziej2, Alex Zwiren3, Chris Schade3
  • : 1GKN Sinter Metals Engineering GmbH, 2GKN Sinter Metals, 3Hoeganaes Corporation
  • : PDF Download
  • : 2017

Abstract

Binder Jetting technology differentiates itself from other Additive Manufacturing (AM) techniques through creating a green part and sintering for densification of components. Traditionally in this technique, a high temperature vacuum furnace or infiltration is utilized during sintering in order to help improve the final density of the component. Due to the low green density of the part directly after it has been printed, an alternative mechanism must be used to drive sintering to a high density. In this study, the aim is to achieve components with as high of a density as possible by altering the powder’s characteristics in coordination with pre-sintering and sintering process steps without infiltration. 316L stainless steel is used as the testing material and this paper will exhibit the influences of improved flowability, powder coatings, and size distributions on the physical properties of components fabricated via binder jetting technology.

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