A methodology for precision manufacture of a nozzle using hybrid laser powder-bed fusion: A case study
| Autor: | Luke Berglind, S.M. Afazov, Willem Denmark, Erdem Ozturk, Lamin Ceesay, Owen Larkin |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0209 industrial biotechnology
Fusion Materials science Mechanical Engineering Acoustics Nozzle 02 engineering and technology Surface finish Laser Industrial and Manufacturing Engineering law.invention 020303 mechanical engineering & transports 020901 industrial engineering & automation 0203 mechanical engineering law Distortion Powder bed |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture. 235:751-760 |
| ISSN: | 2041-2975 0954-4054 |
| Popis: | This paper presents a methodology for precision manufacture of a nozzle using the hybrid laser powder-bed fusion (L-PBF) technology. A new distortion predictive model for hybrid L-PBF was developed using finite element techniques. The model was validated against experimentally measured distortion using optical scanning. The validated model was utilised to mitigate distortion by applying additional stiffeners to the nozzle geometry where the distortion was reduced by 60% to acceptable tolerance of ± 200 µm. Micro-milling trials were conducted to identify optimum cutting parameters delivering high material removal rates while maintaining the average surface roughness of less than 1 µm. Finally, a nozzle with reduced distortion and desirable surface finish was manufactured, which has been used in industrial research context for process and product development of food products. |
| Databáze: | OpenAIRE |
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