SUNConferences, RAPDASA 2014

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THE EFFECT OF PROCESSING PARAMETERS ON PART POROSITY IN HIGH SPEED (30 CUBIC MILLIMETERS PER SECOND) SELECTIVE LASER MELTED (3D PRINTED) TI6AL4V PARTS
Daniël Francois Louw

Last modified: 2014-10-21

Abstract


THE EFFECT OF PROCESSING PARAMETERS ON PART POROSITY IN HIGH SPEED (30 CUBIC MILLIMETERS PER SECOND) SELECTIVE LASER MELTED (3D PRINTED) TI6AL4V PARTS

 

D.F.Louw[1]*

1Department of Materials Science and Metallurgical engineering

University of Pretoria, South Africa

dlouw@csir.co.za

 

 

ABSTRACT

 

Selective laser melting (SLM) machines available on the market utilize scanning speeds of 1 m/s or less, and laser powers of 1 kW or less. This means large parts take a lot of time to manufacture. The current paper shows that high power (3 kW and higher), high scan speed (3m/s and higher) SLM is feasible. Rectangular blocks with dimensions 70x20x3.5mm were printed. Part porosity of 0.05% (as measured with optical microscope) at a building rate of 24mm3/s and  part porosity of 0.15%  at a building rate of 40mm3/s  is demonstrated.

 


[1] The author is enrolled for a Msc (Applied Science Metallurgy) degree in the Department of Materials science and Metallurgical engineering, University of Pretoria

*Corresponding author




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