Abstract
Nowadays Additive Manufacturing processes are increasingly utilized for manufacturing parts with complex shapes in numerous fields such as internal-channel parts in aerospace and automobile industries. However, the geometrical quality of internal channel is still an unsolved problem. In order to provide guidance for the manufacturing of internal-channel parts via Selective Laser Melting process, this paper studies the influence of process parameters, such as build orientation, laser power, scanning speed, layer thickness and scanning strategy. A group of simulations are carried out with Design of Experiments, and the results show the build orientation is the parameter with significant impact. The impact trend and the optimal parameter combination for internal-channel part geometrical quality are analyzed, which is beneficial for high-fidelity internal-channel parts manufacturing.
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