at Google ScholarTitle data
Hofmann, Andreas ; Grotz, Tim ; Köstler, Nico ; Mahr, Alexander ; Döpper, Frank:
Electrical Smoothing of the Powder Bed Surface in Laser-Based Powder Bed Fusion of Metals.
In: Journal of Manufacturing and Materials Processing.
Vol. 8
(2024)
Issue 3
.
- 112.
ISSN 2504-4494
DOI: https://doi.org/10.3390/jmmp8030112
Abstract in another language
Achieving a homogeneous and uniform powder bed surface as well as a defined, uniform layer thickness is crucial for achieving reproducible component properties that meet requirements when powder bed fusion of metals with a laser beam. The existing recoating processes cause wear of the recoater blade due to protruded, melted obstacles, which affects the powder bed surface quality locally. Impairments to the powder bed surface quality have a negative effect on the resulting component properties such as surface quality and relative density. This can lead either to scrapped components or to additional work steps such as surface reworking. In this work, an electric smoother is presented with which a wear-free and contactless smoothing of the powder bed can be realized. The achievable powder bed surface quality was analyzed using optical profilometry. It was found that the electric smoother can compensate for impairments in the powder bed surface and achieve a reproducible surface quality of the powder bed regardless of the initial extent of the impairments. Consequently, the electric smoother offers a promising opportunity to reduce the scrap rate in PBF-LB/M and to increase component quality.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Institutions of the University: | Faculties > Faculty of Engineering Science > Chair Manufacturing and Remanufacturing Technology Faculties > Faculty of Engineering Science > Chair Manufacturing and Remanufacturing Technology > Chair Manufacturing and Remanufacturing Technology - Univ.-Prof. Dr.-Ing. Frank Döpper Research Institutions > Affiliated Institutes > Fraunhofer-Projectgroup Processinnovation |
| Result of work at the UBT: | Yes |
| DDC Subjects: | 600 Technology, medicine, applied sciences 600 Technology, medicine, applied sciences > 600 Technology 600 Technology, medicine, applied sciences > 620 Engineering 600 Technology, medicine, applied sciences > 670 Manufacturing |
| Date Deposited: | 03 Apr 2025 09:01 |
| Last Modified: | 03 Apr 2025 09:01 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/93158 |