Laser-based Powder Bed Fusion (LPBF) is typically performed at laser powers between 500 - 1000 W, and diameters of the laser beam between 50 μm - 500 μm. As the build rate is directly connected with the applied laser power, a reduction of the process time requires an increase of the applied laser power. In order to build large parts in a sufficient time, the implementation of high laser powers in LBPF is of high interest.
To increase the build rate, the laser power was set to be 16 kW and the diameter of the laser beam was determined to generate continuous melt beads. Additively manufactured samples of AlSi10Mg were used for the high-power experiments. The melting process was recorded with a high-speed camera. The generated beads were analysed metallographically to determine the extent and shape of the molten region and the porosity.
Diameters of the laser beam between 2.5 - 3.8 mm, feed rates within a range of 0.5 - 1.5 m/s lead at the laser power of 16 kW to continuous melt beads but show also strong hydrogen-induced porosity.
%0 Conference Proceedings
%1 Leis2021Laser-based
%A Leis, Artur
%A Bechler, Stefan
%A Weber, Rudolf
%A Graf, Thomas
%D 2021
%K additive additivemanufacturing high-power laser lpbf myown
%T Laser-based Powder Bed Fusion with 16 kW
%X Laser-based Powder Bed Fusion (LPBF) is typically performed at laser powers between 500 - 1000 W, and diameters of the laser beam between 50 μm - 500 μm. As the build rate is directly connected with the applied laser power, a reduction of the process time requires an increase of the applied laser power. In order to build large parts in a sufficient time, the implementation of high laser powers in LBPF is of high interest.
To increase the build rate, the laser power was set to be 16 kW and the diameter of the laser beam was determined to generate continuous melt beads. Additively manufactured samples of AlSi10Mg were used for the high-power experiments. The melting process was recorded with a high-speed camera. The generated beads were analysed metallographically to determine the extent and shape of the molten region and the porosity.
Diameters of the laser beam between 2.5 - 3.8 mm, feed rates within a range of 0.5 - 1.5 m/s lead at the laser power of 16 kW to continuous melt beads but show also strong hydrogen-induced porosity.
@proceedings{Leis2021Laser-based,
abstract = {Laser-based Powder Bed Fusion (LPBF) is typically performed at laser powers between 500 - 1000 W, and diameters of the laser beam between 50 μm - 500 μm. As the build rate is directly connected with the applied laser power, a reduction of the process time requires an increase of the applied laser power. In order to build large parts in a sufficient time, the implementation of high laser powers in LBPF is of high interest.
To increase the build rate, the laser power was set to be 16 kW and the diameter of the laser beam was determined to generate continuous melt beads. Additively manufactured samples of AlSi10Mg were used for the high-power experiments. The melting process was recorded with a high-speed camera. The generated beads were analysed metallographically to determine the extent and shape of the molten region and the porosity.
Diameters of the laser beam between 2.5 - 3.8 mm, feed rates within a range of 0.5 - 1.5 m/s lead at the laser power of 16 kW to continuous melt beads but show also strong hydrogen-induced porosity.},
added-at = {2021-09-14T06:56:26.000+0200},
author = {Leis, Artur and Bechler, Stefan and Weber, Rudolf and Graf, Thomas},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2cbe8df94483641cacb81c6be32db7c1b/arturleis},
ee = {http://dx.doi.org/10.1016/j.amc.2007.04.024},
eventdate = {21.-24. Juni 2021},
eventtitle = {Lasers in Manufacturing 2021},
interhash = {c08180c14525cebc8a89c38da6a58ada},
intrahash = {cbe8df94483641cacb81c6be32db7c1b},
keywords = {additive additivemanufacturing high-power laser lpbf myown},
organization = {Wissenschaftliche Gesellschaft Lasertechnik e.V.},
timestamp = {2021-09-14T05:01:12.000+0200},
title = {Laser-based Powder Bed Fusion with 16 kW},
year = 2021
}
