TY - GEN
T1 - Experimental Investigation of Spreadability of Metal Powders in Recoating Process
AU - Neveu, Aurelien
AU - Tripathi, Naveen Mani
AU - Rigo, Oliver
AU - Francqui, Filip
AU - Lumay, Geoffroy
N1 - Publisher Copyright:
© European Powder Metallurgy Association (EPMA)
PY - 2020/1/1
Y1 - 2020/1/1
N2 - Metallic fine powders are widely used in many additive manufacturing (AM) industries. To control and optimize processing methods, powders must be precisely characterized either based on grain properties or behavior of bulk powder. In this research, we will focus on powder spreadability in Selective Laser Melting (SLM) process, which is a kind of bulk powder behavior. Three metallic powders (Nickel and Aluminium alloy) are studied. Powders spreadability is determined with the GranuDrum, a rotating drum enabling to quantify the influence of cohesion, shear-thinning/thickening as well as thixotropic behavior. It allows to assess the powder spreadability without applying compressive load during the powder testing what fits with the conditions seen by powders in AM processes. These measurements are correlated to powder performance in 3D printer, where a CCD camera is used to take several snapshots of powder bed. Two different recoater wipers and two recoating speeds (30 and 160mm/s) are explored.
AB - Metallic fine powders are widely used in many additive manufacturing (AM) industries. To control and optimize processing methods, powders must be precisely characterized either based on grain properties or behavior of bulk powder. In this research, we will focus on powder spreadability in Selective Laser Melting (SLM) process, which is a kind of bulk powder behavior. Three metallic powders (Nickel and Aluminium alloy) are studied. Powders spreadability is determined with the GranuDrum, a rotating drum enabling to quantify the influence of cohesion, shear-thinning/thickening as well as thixotropic behavior. It allows to assess the powder spreadability without applying compressive load during the powder testing what fits with the conditions seen by powders in AM processes. These measurements are correlated to powder performance in 3D printer, where a CCD camera is used to take several snapshots of powder bed. Two different recoater wipers and two recoating speeds (30 and 160mm/s) are explored.
KW - Additive manufacturing
KW - Cohesive index
KW - Experimental
KW - Recoating
KW - Rotating drum
KW - Spreadability
UR - http://www.scopus.com/inward/record.url?scp=85125108357&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85125108357
T3 - Proceedings - Euro PM2020 Congress and Exhibition
BT - Proceedings - Euro PM2020 Congress and Exhibition
PB - European Powder Metallurgy Association (EPMA)
T2 - European Powder Metallurgy Congress and Exhibition, Euro PM 2020
Y2 - 5 October 2020 through 7 October 2020
ER -
