Multi-jet hydrodynamic surface finishing and X-ray computed tomography (X-CT) inspection of laser powder bed fused Inconel 625 fuel injection/spray nozzles
Laser powder bed fused (L-PBF) components have poor surface finish quality that hinders their use in practical applications. Surface finishing the complex passages in the L-PBF components is particularly challenging. We aimed to produce a consistent surface finish on the internal passages of direct...
| Main Authors: | , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/160813 |
| _version_ | 1811689009780359168 |
|---|---|
| author | Nagalingam, Arun Prasanth Lee, Jian-Yuan Yeo, Swee Hock |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Nagalingam, Arun Prasanth Lee, Jian-Yuan Yeo, Swee Hock |
| author_sort | Nagalingam, Arun Prasanth |
| collection | NTU |
| description | Laser powder bed fused (L-PBF) components have poor surface finish quality that hinders their use in practical applications. Surface finishing the complex passages in the L-PBF components is particularly challenging. We aimed to produce a consistent surface finish on the internal passages of direct metal laser sintered (DMLS) Inconel 625 fuel nozzles—regardless of the as-built non-uniform surface—using a multi-jet hydrodynamic finishing technique. We effectively harnessed the hydrodynamic intensity and surface finished the fuel injection/spray tips comprising multiple branches. We found profile and areal surface roughness reduced up to 90 % across all branches. Also, the peak height above the core surface Spk at the nozzle inlet reduced by 40–75 %. X-ray computed tomography (X-CT) inspection post-finishing showed that roundness and circularity of the injection/spray tips improved, while most critical nozzle dimensions were within the tolerance. The results lend further credence that the proposed technique: Multi-jet hydrodynamic cavitation abrasive finishing (MJ-HCAF) can be used to surface-finish and deploy the L-PBF fuel nozzles in practical applications—ensuring safe implementation. |
| first_indexed | 2024-10-01T05:41:17Z |
| format | Journal Article |
| id | ntu-10356/160813 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:41:17Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1608132022-08-03T03:51:33Z Multi-jet hydrodynamic surface finishing and X-ray computed tomography (X-CT) inspection of laser powder bed fused Inconel 625 fuel injection/spray nozzles Nagalingam, Arun Prasanth Lee, Jian-Yuan Yeo, Swee Hock School of Mechanical and Aerospace Engineering Rolls-Royce@NTU Corporate Lab Engineering::Mechanical engineering Additive Manufacturing Powder Bed Fusion Laser powder bed fused (L-PBF) components have poor surface finish quality that hinders their use in practical applications. Surface finishing the complex passages in the L-PBF components is particularly challenging. We aimed to produce a consistent surface finish on the internal passages of direct metal laser sintered (DMLS) Inconel 625 fuel nozzles—regardless of the as-built non-uniform surface—using a multi-jet hydrodynamic finishing technique. We effectively harnessed the hydrodynamic intensity and surface finished the fuel injection/spray tips comprising multiple branches. We found profile and areal surface roughness reduced up to 90 % across all branches. Also, the peak height above the core surface Spk at the nozzle inlet reduced by 40–75 %. X-ray computed tomography (X-CT) inspection post-finishing showed that roundness and circularity of the injection/spray tips improved, while most critical nozzle dimensions were within the tolerance. The results lend further credence that the proposed technique: Multi-jet hydrodynamic cavitation abrasive finishing (MJ-HCAF) can be used to surface-finish and deploy the L-PBF fuel nozzles in practical applications—ensuring safe implementation. National Research Foundation (NRF) This work was performed within the Rolls-Royce@NTU Corporate Lab with support from the National Research Foundation (NRF) of Singapore under the Corp Lab@University Scheme. 2022-08-03T03:51:33Z 2022-08-03T03:51:33Z 2021 Journal Article Nagalingam, A. P., Lee, J. & Yeo, S. H. (2021). Multi-jet hydrodynamic surface finishing and X-ray computed tomography (X-CT) inspection of laser powder bed fused Inconel 625 fuel injection/spray nozzles. Journal of Materials Processing Technology, 291, 117018-. https://dx.doi.org/10.1016/j.jmatprotec.2020.117018 0924-0136 https://hdl.handle.net/10356/160813 10.1016/j.jmatprotec.2020.117018 2-s2.0-85098864906 291 117018 en Journal of Materials Processing Technology © 2020 Elsevier B.V. All rights reserved. |
| spellingShingle | Engineering::Mechanical engineering Additive Manufacturing Powder Bed Fusion Nagalingam, Arun Prasanth Lee, Jian-Yuan Yeo, Swee Hock Multi-jet hydrodynamic surface finishing and X-ray computed tomography (X-CT) inspection of laser powder bed fused Inconel 625 fuel injection/spray nozzles |
| title | Multi-jet hydrodynamic surface finishing and X-ray computed tomography (X-CT) inspection of laser powder bed fused Inconel 625 fuel injection/spray nozzles |
| title_full | Multi-jet hydrodynamic surface finishing and X-ray computed tomography (X-CT) inspection of laser powder bed fused Inconel 625 fuel injection/spray nozzles |
| title_fullStr | Multi-jet hydrodynamic surface finishing and X-ray computed tomography (X-CT) inspection of laser powder bed fused Inconel 625 fuel injection/spray nozzles |
| title_full_unstemmed | Multi-jet hydrodynamic surface finishing and X-ray computed tomography (X-CT) inspection of laser powder bed fused Inconel 625 fuel injection/spray nozzles |
| title_short | Multi-jet hydrodynamic surface finishing and X-ray computed tomography (X-CT) inspection of laser powder bed fused Inconel 625 fuel injection/spray nozzles |
| title_sort | multi jet hydrodynamic surface finishing and x ray computed tomography x ct inspection of laser powder bed fused inconel 625 fuel injection spray nozzles |
| topic | Engineering::Mechanical engineering Additive Manufacturing Powder Bed Fusion |
| url | https://hdl.handle.net/10356/160813 |
| work_keys_str_mv | AT nagalingamarunprasanth multijethydrodynamicsurfacefinishingandxraycomputedtomographyxctinspectionoflaserpowderbedfusedinconel625fuelinjectionspraynozzles AT leejianyuan multijethydrodynamicsurfacefinishingandxraycomputedtomographyxctinspectionoflaserpowderbedfusedinconel625fuelinjectionspraynozzles AT yeosweehock multijethydrodynamicsurfacefinishingandxraycomputedtomographyxctinspectionoflaserpowderbedfusedinconel625fuelinjectionspraynozzles |