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An experimental investigation on surface quality of 3D metal printed SS316L by direct metal laser sintering technique

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Abstract

The use of additive manufacturing, specifically 3D printing, has significantly altered the manufacturing process for complex geometries composed of various materials. This study investigates the experimental implementation of the Direct Metal Laser Sintering (DMLS) technique for the 3D printing of SS316L. The primary objective of this research is to assess the optimal configuration of operational variables, namely laser power, scan speed, and layer thickness, in order to achieve a desired level of surface roughness. Utilizing laser power levels of 300, 330, and 360 W, scan rates of 800, 900, and 1000 mm/s, and layer thicknesses of 20, 40, and 80 μm, the L27 orthogonal array is utilized to produce SS316L test samples. The evaluation of surface roughness takes into account three primary parameters: Ra, Rz, and Rq. The results of the experiment illustrate the influence of various operational parameters on surface roughness. To determine the significance of individual parameters as well as their interactions, statistical analysis and correlation studies are utilized. As a decision-making instrument, the Analytical Hierarchy Process (AHP) is adapted to determine the optimal combination of operating parameters. In addition, the AHP facilitates the development of a hierarchical framework for evaluating the significance of individual parameters and their respective weights in achieving the most desirable combination. The outcomes demonstrate the impact of laser power, scan speed, and layer thickness on the surface roughness of SS316L printed specimens. In addition, the determination of the optimal combination of operating parameters improves surface quality. This study’s findings make a substantial contribution to the advancement of 3D printing technology and provide valuable insights for industries seeking to employ the DMLS technique with SS316L for manufacturing applications.

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Authors and Affiliations

  1. Department of Mechanical Engineering, National Institute of Technology, Tadepalligudem, Andhra Pradesh, 534101, India

    Vemuri Venkata Phani Babu & Veeresh Kumar GB

  2. Department of Mechanical Engineering, MLR Institute of Technology, Hyderabad, Telangana, 500043, India

    Vemuri Venkata Phani Babu

  3. Department of Mechanical Engineering, Faculty of Engineering, Universidad Tecnológica Metropolitana, Av. José Pedro Alessandri 1242, Santiago, Chile

    Praveen Barmavatu

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  1. Vemuri Venkata Phani Babu
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Phani Babu, V.V., GB, V.K. & Barmavatu, P. An experimental investigation on surface quality of 3D metal printed SS316L by direct metal laser sintering technique. Int J Interact Des Manuf (2024). https://doi.org/10.1007/s12008-024-01801-6

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