JOM

, Volume 69, Issue 3, pp 592–596 | Cite as

Binder-Jet Printing of Fine Stainless Steel Powder with Varied Final Density

Article

Abstract

Binder jetting is an additive manufacturing process that produces weak porous parts that are strengthened through sintering and/or infiltration. This article reports on two different methods of preparing fine 316 stainless steel powder and their impact on the final sintered density and dimensions relative to direct printing into <22 micron powder . The first method uses agglomerates of fine powder. In the second, nylon 12 powders are mixed with the steel powder as a fugitive space holder to increase porosity. Sintered density and sintering shrinkage of agglomerate material are shown to vary with the density of the spread powder bed. Nevertheless, with added nylon, the shrinkage correlates with the shrinkage of the base steel powder, whereas the density depends on the quantity of the nylon. Thus, it is possible to create varied sintered density with compatible shrinkage levels—a key step toward creating binder-jetting systems with spatially controlled porosity.

Keywords

Sintered Density Steel Powder Stainless Steel Powder Agglomerate Powder Spread Density 

References

  1. 1.
    D.R.I. Gibson and B. Stucker, Additive Manufacturing Technologies: 3D Printing, Rapid Prototyping, and Direct Digital Manufacturing, 2nd ed. (New York: Springer, 2014), pp. 1–3.Google Scholar
  2. 2.
    J. Yoo, M. Cima, E. Sachs, S. Suresh, Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures-B: Ceramic Engineering and Science Proceedings, vol. 16, issue 5, p. 755. Wiley, Hoboken (2008).Google Scholar
  3. 3.
    E. Sachs, M. Cima, and J. Cornie, CIRP Ann. 39, 201 (1990).CrossRefGoogle Scholar
  4. 4.
    A. Mostafaei, E.L. Stevens, E.T. Hughes, S.D. Biery, C. Hilla, and M. Chmielus, Mater. Des. 108, 126 (2016).Google Scholar
  5. 5.
    P.S. Liu and G.F. Chen, Porous Materials, 1st ed. (Boston: Butterworth-Heinemann, 2014), pp. 113–188.CrossRefGoogle Scholar
  6. 6.
    J. Song, J.C. Gelin, T. Barrière, and B. Liu, J. Mater. Process. Technol. 177, 352 (2006).CrossRefGoogle Scholar
  7. 7.
    C.H. Ji, N.H. Loh, K.A. Khor, and S.B. Tor, Mater. Sci. Eng. A 311, 74 (2001).CrossRefGoogle Scholar

Copyright information

© The Minerals, Metals & Materials Society 2016

Authors and Affiliations

  • Mohsen Ziaee
    • 1
  • Eric M. Tridas
    • 1
  • Nathan B. Crane
    • 1
  1. 1.Department of Mechanical EngineeringUniversity of South FloridaTampaUSA

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