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Automated tool-path generation for rapid manufacturing and numerical simulation of additive manufacturing LMD geometries

 
: Biegler, Max; Wang, Jiahan; Graf, Benjamin; Rethmeier, Michael

:
Volltext urn:nbn:de:0011-n-5747376 (951 KByte PDF)
MD5 Fingerprint: d3b59457166c1f4ba6442fe4d4bb73fe
Erstellt am: 31.1.2020


Bleck, Wolfgang (Chairman) ; Stahl-Institut VDEh, Düsseldorf:
METEC & 4th ESTAD 2019, European Steel Technology and Application Days : Düsseldorf, Germany, CCD Congress Center Düsseldorf, 24-28 June 2019, DVD-ROM
Düsseldorf: Steel Institute VDEh, 2019
6 S.
International Metallurgical Trade Fair with Congresses (METEC) <10, 2019, Düsseldorf>
European Steel Technology and Application Days (ESTAD) <4, 2019, Düsseldorf>
Bundesministerium fur Wirtschaft und Energie BMWi (Deutschland)
IGF; 18737N; FOSTA
Welding distortion simulation
Englisch
Konferenzbeitrag, Elektronische Publikation
Fraunhofer IPK ()

Abstract
In additive manufacturing (AM) Laser Metal Deposition (LMD), parts are built by welding layers of powder feedstock onto a substrate. Applications for steel powders include forging tools and structural components for various industries. For large parts, the choice of tool-paths influences the build-rate, the part performance and the distortions in a highly geometry-dependent manner. With weld-path lengths in the range of hundreds of meters, a reliable, automated tool path generation is essential for the usability of LMD processes.
In this contribution, automated tool-path generation approaches are shown and their results are discussed for arbitrary geometries. The investigated path strategies are the classical approaches: “Zig-zag-” and “contour-parallel-strategies”. After generation, the tool-paths are automatically formatted into g-code for experimental build-up and ASCII for a numerical simulation model. Finally, the tool paths are discussed in regards to volume-fill, microstructure and porosity for the experimental samples.
This work presents a part of the IGF project 18737N “Welding distortion simulation” (FOSTA P1140)

: http://publica.fraunhofer.de/dokumente/N-574737.html