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Materials for high speed sintering

Published online by Cambridge University Press:  15 July 2014

Adam Ellis ,
Christopher J. Noble ,
Liam Hartley ,
Charis Lestrange ,
Neil Hopkinson  and
Candice Majewski
Adam Ellis*
Affiliation:
Department of Mechanical Engineering, The University of Sheffield, Sheffield S1 3JD, United Kingdom
Christopher J. Noble
Affiliation:
Department of Mechanical Engineering, The University of Sheffield, Sheffield S1 3JD, United Kingdom
Liam Hartley
Affiliation:
Department of Mechanical Engineering, The University of Sheffield, Sheffield S1 3JD, United Kingdom
Charis Lestrange
Affiliation:
Department of Mechanical Engineering, The University of Sheffield, Sheffield S1 3JD, United Kingdom
Neil Hopkinson
Affiliation:
Department of Mechanical Engineering, The University of Sheffield, Sheffield S1 3JD, United Kingdom
Candice Majewski
Affiliation:
Department of Mechanical Engineering, The University of Sheffield, Sheffield S1 3JD, United Kingdom
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

High Speed Sintering (HSS) is a novel additive manufacturing technology which currently uses Nylon 12 as the standard feedstock material. To expand the number of processable materials, the preferred characteristics of polymeric powder as a feedstock powder are presented, appropriate materials identified, parts made, and mechanical properties measured. Two commercially available laser sintering (LS) grade powders previously untested for HSS were selected, DuraForm® HST10 and ALM TPE 210-S. Tensile test specimens were manufactured using each material and mechanical properties analyzed and compared to the manufacturers' specification for LS. Tensile test specimens built using DuraForm® PA show higher tensile strength and elongation at break than LS whereas DuraForm® HST10 shows somewhat reduced tensile strength but slightly increased elongation at break. ALM TPE 210-S shows elongation at break of more than double that of LS demonstrating the capability of HSS to process viscous materials. The results indicate that HSS is capable of processing LS grade polymeric powders and may extend beyond.

Keywords

High Speed SinteringMaterialsAdditive Manufacturing
Type
Invited Papers
Information
Journal of Materials Research , Volume 29 , Issue 17: Focus Issue: The Materials Science of Additive Manufacturing , 14 September 2014 , pp. 2080 - 2085
Copyright
Copyright © Materials Research Society 2014 

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References

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