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Additive Manufacturing Using Water Atomised Steel Powders

  • : Simon Hoeges1, Alex Zwiren2, Christopher Schade2
  • : 1GKN Sinter Metals Engineering GmbH, 2Hoeganaes Corporation
  • : PDF Download
  • : 2016

Abstract

Additive Manufacturing (AM) has the potential to lead to a major change in production processes as they are known today. Still economic and quality aspects need to be considered to enable broader application of the technology. To achieve a higher productivity and enable economies of scale water atomisation of steel is being developed. Powder characteristics for AM technologies are constricted concerning size and morphology to ensure a homogenous and reproducible powder deposition and process stability. To overcome these limitations this paper analyses the influence of powder particle size and flowability of SS 316L on the process robustness in Laser melting. Microstructure, static mechanical and fatigue properties are analysed and compared to standard material properties. Along with recent development on AM process speed increase the outcome of this paper increases the potential to apply AM for serial production. Applications in Prototyping including surface finishing are shown for automotive applications.

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