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Determination of a process window with consideration of effective layer thickness in SLM process

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Abstract

Selective laser melting (SLM) process based on metallic powders has been broadly adopted for its higher accuracy. In the SLM process, the building of a process window is a fundamental work for fabricating a full-dense part for a new material. Single-track test (STT) has been widely used due to its simplicity. Due to the different environmental conditions of between STTs and a real fabrication, stable process parameters obtained from the STTs cannot ensure successful fabrication. To resolve the problem, this paper proposes a new method to build a process window based on multi-layered fabrication. From the comparison between existing and proposed method, it is concluded that the proposed method can stably build a process window for a hard-processed material and provide more information for a geometrically accurate fabrication and the surface quality of a fabricated part.

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Acknowledgments

I wish to thank Son yong and his team in Korea Institute of Industrial Technology (KITECH) for their help in the fabrication of specimens.

Funding

This research was supported by the Tongmyong University Research Grants 2017A002.

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Authors and Affiliations

  1. School of Mechanical Engineering, Tongmyong University, Busan, 48520, South Korea

    Il Hyuk Ahn

  2. Center for Mechanical Convergence Engineering, Busan, 48520, South Korea

    Il Hyuk Ahn

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  1. Il Hyuk Ahn
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Correspondence to Il Hyuk Ahn.

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Ahn, I. Determination of a process window with consideration of effective layer thickness in SLM process. Int J Adv Manuf Technol 105, 4181–4191 (2019). https://doi.org/10.1007/s00170-019-04402-w

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  • DOI: https://doi.org/10.1007/s00170-019-04402-w

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