Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Influences of scan strategy and exposure parameters on diameter and surface quality of struts in lattice structures

Einflüsse der Scanstrategie und der Belichtungsparameter auf Durchmesser und Oberflächenqualität von Stäben in Gitterstrukturen
 
: Korn, Hannes; Koch, Peter; Kordaß, Richard; Schöne, Christine; Müller, Bernhard; Holzhausen, Stefan; Stelzer, Ralph

:
Volltext urn:nbn:de:0011-n-4875266 (987 KByte PDF)
MD5 Fingerprint: 85e41433f6aa8ce0cd7ecd9aa15a89ef
Erstellt am: 23.3.2018


Fraunhofer Additive Manufacturing Alliance, Dresden; Fraunhofer-Institut für Werkzeugmaschinen und Umformtechnik -IWU-, Chemnitz:
Fraunhofer Direct Digital Manufacturing Conference, DDMC 2018 : Berlin, March 14-15, 2018
Stuttgart: Fraunhofer Verlag, 2018
ISBN: 978-3-8396-1320-7
7 S.
Fraunhofer Direct Digital Manufacturing Conference (DDMC) <2018, Berlin>
Englisch
Konferenzbeitrag, Elektronische Publikation
Fraunhofer IWU ()
additive Fertigung; Belichtungsstrategie; Laser-Strahlschmelzen; Gitterstruktur; Leichtbau

Abstract
A modified point-exposure strategy is presented which enables the use of point-exposure on industry-standard laser beam melting systems without modifying its software configuration. Therefore exposure points are replaced by short scan vectors of defined power and scan speed. The influence of the length of the exposure vectors as well as of the laser power and the scan speed on the strut diameter and the surface quality are investigated. It is shown that with this method manufacture of lattice structures which exhibit strut diameters of 150 μm or less and smooth surfaces compared to contour hatch-exposure is possible. Additionally a qualitative comparison of the micro structures of contour hatch-exposed and point-exposed specimens out of Ti6Al4V is carried out. Specimens of both exposure strategies show a similar micro structure.

: http://publica.fraunhofer.de/dokumente/N-487526.html