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Investigation of fully dense laser sintering of tool steel powder using a pulsed Nd:YAG (neodymium-doped yttrium aluminium garnet) laser

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posted on 26.05.2009 by W.-N. Su, Poonjolai Erasenthiran, Phill M. Dickens
A 550W neodymium-doped yttrium aluminium garnet (Nd:YAG) pulsed laser was used in the solid freeform fabrication (SFF) process to form fully dense sintered parts. Tool steel powder was chosen due to its wide acceptance in the tool-making industry. Unlike many processes applying either thermoplastic binder or metals of low melting points in the powder mixture, this process enables a direct fusion of material to solid parts without a further post-processing step. This paper presents a methodology and the results of high-power laser sintering of tool steel powder. The investigation includes the effects of various process parameters on the fully dense laser sintering results on a single bead and single layer and the related scan strategy to build up solid cubes. This process could eventually produce pre-forms with complex material structures rather than finished tools or parts.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Citation

SU, W.-N., ERASENTHIRAN, P. and DICKENS, P.M., 2003. Investigation of fully dense laser sintering of tool steel powder using a pulsed Nd:YAG (neodymium-doped yttrium aluminium garnet) laser. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 217 (1), pp. 127-138

Publisher

Professional Engineering Publishing / © IMechE

Version

VoR (Version of Record)

Publication date

2003

Notes

This article was published in the journal, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science [© IMechE]. It is also available at: http://journals.pepublishing.com/content/119771

ISSN

0954-4062

Language

en

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