Measurement of particle emissions in Laser Powder Bed Fusion (L-PBF) processes and its potential for in-situ process monitoring
- Laser Powder Bed Fusion (L-PBF) is a promising additive manufacturing (AM) technology for metal part production especially for complex and lightweight structures or functional designs. In L PBF processes several by-products including welding plume and its condensates, spatter and ejected powder are generated during laser exposure. Investigations of micro- and nano-sized by-products have received little attention in literature. This study focuses on the analysis of particle emissions in L PBF of 316L stainless steel using a scattered light aerosol spectrometer and a fast mobility particle sizer spectrometer during the process which allows for in-situ analysis of particle sizes in the range of 6 nm to 100 µm. A distinct correlation of emission signals to part position can be revealed. In addition, a significant influence of laser scanning vector directions on emission signals is presented. Furthermore, differing powder layer thicknesses can be recognised by deviations in emissionLaser Powder Bed Fusion (L-PBF) is a promising additive manufacturing (AM) technology for metal part production especially for complex and lightweight structures or functional designs. In L PBF processes several by-products including welding plume and its condensates, spatter and ejected powder are generated during laser exposure. Investigations of micro- and nano-sized by-products have received little attention in literature. This study focuses on the analysis of particle emissions in L PBF of 316L stainless steel using a scattered light aerosol spectrometer and a fast mobility particle sizer spectrometer during the process which allows for in-situ analysis of particle sizes in the range of 6 nm to 100 µm. A distinct correlation of emission signals to part position can be revealed. In addition, a significant influence of laser scanning vector directions on emission signals is presented. Furthermore, differing powder layer thicknesses can be recognised by deviations in emission signals.…
Autor*innen: | Gunther MohrORCiD, Stefan SeegerORCiD, Kai HilgenbergORCiD |
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Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Graue Literatur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Euro PM 2019 Proceedings |
Jahr der Erstveröffentlichung: | 2019 |
Organisationseinheit der BAM: | 4 Material und Umwelt |
4 Material und Umwelt / 4.2 Material-Mikrobiom Wechselwirkungen | |
9 Komponentensicherheit | |
9 Komponentensicherheit / 9.3 Schweißtechnische Fertigungsverfahren | |
Herausgeber (Institution): | EPMA |
Erste Seite: | 1 |
Letzte Seite: | 7 |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten |
Freie Schlagwörter: | Additive Manufacturing (AM); Aerosol measurements; Fume; Laser Powder Bed Fusion (L-PBF); Particle gas emission; Plume; Spatter |
Themenfelder/Aktivitätsfelder der BAM: | Material |
Material / Additive Fertigung | |
Veranstaltung: | Euro PM 2019 |
Veranstaltungsort: | Maastricht, The Netherlands |
Beginndatum der Veranstaltung: | 13.10.2019 |
Enddatum der Veranstaltung: | 16.10.2019 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 28.10.2019 |
Referierte Publikation: | Nein |