Laser Powder Bed Fusion (LPBF) is limited in the achievable accuracy, surface quality and structure size due to its inherent
melting process. The achievable structure sizes are mainly dependent on the focal diameter and the grain size of the
powder. Smaller structures, especially deep and narrow slits with a width below 100 µm, are still a major challenge.
Combining continuous wave and ultrashort pulsed lasers in the same optical system enables consecutive additive and
subtractive processes. This results in a quasi-simultaneous manufacturing process, where the emerging part can be
precisely machined with ultrafast laser ablation after each additively added layer. In the talk the system technology used
for the superposition of the lasers as well as the results of the combined additive and subtractive processes for the
fabrication of deep and narrow slits in stainless steel parts will be shown.
%0 Conference Paper
%1 Henn.2021.Combining
%A Henn, Manuel
%A Buser, Matthias
%A Onuseit, Volkher
%A Weber, Rudolf
%A Graf, Thomas
%B Proceedings of the Lasers in Manufacturing Conference
%D 2021
%K myown from:manuelhenn lpbf micromaterialprocessing ultrashortpulse processdevelopment
%N 4
%T Combining LPBF and ultrafast laser processing to produce parts with deep microstructures
%U https://wlt.de/sites/default/files/2021-10/ablation_drilling_cutting/Contribution_175_final.pdf
%X Laser Powder Bed Fusion (LPBF) is limited in the achievable accuracy, surface quality and structure size due to its inherent
melting process. The achievable structure sizes are mainly dependent on the focal diameter and the grain size of the
powder. Smaller structures, especially deep and narrow slits with a width below 100 µm, are still a major challenge.
Combining continuous wave and ultrashort pulsed lasers in the same optical system enables consecutive additive and
subtractive processes. This results in a quasi-simultaneous manufacturing process, where the emerging part can be
precisely machined with ultrafast laser ablation after each additively added layer. In the talk the system technology used
for the superposition of the lasers as well as the results of the combined additive and subtractive processes for the
fabrication of deep and narrow slits in stainless steel parts will be shown.
@inproceedings{Henn.2021.Combining,
abstract = {Laser Powder Bed Fusion (LPBF) is limited in the achievable accuracy, surface quality and structure size due to its inherent
melting process. The achievable structure sizes are mainly dependent on the focal diameter and the grain size of the
powder. Smaller structures, especially deep and narrow slits with a width below 100 µm, are still a major challenge.
Combining continuous wave and ultrashort pulsed lasers in the same optical system enables consecutive additive and
subtractive processes. This results in a quasi-simultaneous manufacturing process, where the emerging part can be
precisely machined with ultrafast laser ablation after each additively added layer. In the talk the system technology used
for the superposition of the lasers as well as the results of the combined additive and subtractive processes for the
fabrication of deep and narrow slits in stainless steel parts will be shown.},
added-at = {2022-03-22T17:08:32.000+0100},
author = {Henn, Manuel and Buser, Matthias and Onuseit, Volkher and Weber, Rudolf and Graf, Thomas},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2ec9630e428a6c08128fd3225dea4db6d/ifsw},
booktitle = {Proceedings of the Lasers in Manufacturing Conference},
ee = {http://dx.doi.org/10.1002/qre.1500},
interhash = {303455222d9106686136782e34385d9c},
intrahash = {ec9630e428a6c08128fd3225dea4db6d},
keywords = {myown from:manuelhenn lpbf micromaterialprocessing ultrashortpulse processdevelopment},
language = {english},
number = 4,
organization = {WLT},
timestamp = {2022-03-22T16:08:32.000+0100},
title = {Combining LPBF and ultrafast laser processing to produce parts with deep microstructures},
url = {https://wlt.de/sites/default/files/2021-10/ablation_drilling_cutting/Contribution_175_final.pdf},
year = 2021
}
