Impact of powder recoating speed on built properties in PBF-LB process
Paper i proceeding, 2022

In powder bed fusion laser-beam (PBF-LB), powder deposition parameters are not commonly adjusted for different materials. In this study, the recoater speed was varied from 150 mm/s to 500 mm/s to study its influence on processability of two different powders. The 420 steel powder possesses better flowability and higher packing density than Inconel 718 at different testing speeds. This is reflected on surface roughness (Sa): Inconel 718 samples show larger variations than 420 steel ones across different locations on the build plate and under different recoating speeds. This demonstrates the necessity of accounting for powder properties for robust PBF-LB processing.

surface roughness

Powder Bed Fusion - Laser Beam

porosity

LPBF

recoating

Författare

Laura Cordova Gonzalez

Universiteit Twente

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Zhuoer Chen

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Procedia CIRP

22128271 (eISSN)

Vol. 115 125-129

10th CIRP Global Web Conference on Material Aspects of Manufacturing Processes
Gothenburg, Sweden,

Additive Manufacturing using Metal Pilot Line (MANUELA)

Europeiska kommissionen (EU) (EC/H2020/820774), 2018-10-01 -- 2022-09-30.

Ämneskategorier

Keramteknik

Bearbetnings-, yt- och fogningsteknik

Materialkemi

DOI

10.1016/j.procir.2022.10.061

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Senast uppdaterat

2023-01-11