Machining of PAM green Y-TZP: Influence of build and in-plane directions on cutting forces and surface topography

Machining of PAM green Y-TZP: Influence of build and in-plane directions on cutting forces and surface topography


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Abstract. The combination of the pellet additive manufacturing (PAM) process and green ceramic machining within the same hybrid machine is a very promising route to obtain green ceramic parts with complex shapes, smooth surface topography and tight tolerances. However, there is still a lack of data due to the novelty of this manufacturing route. This article studies the possible influence of the build and in-plane directions on the cutting forces and surface topography during the milling of Y-TZP green ceramic parts obtained by the PAM process. The RMS cutting forces, arithmetic and total roughness (Ra and Rt, respectively) were measured. The in-plane direction (aligned with one of the horizontal part edges) did not have a significant influence neither on the cutting forces nor on the surface topography. Conversely, the build direction has a significant effect on the cutting forces recorded. The layers deposited the furthest from the build platform required 57.5% less force to be milled than those in contact with it. The surface topography was not significantly modified across the build direction, all values of Ra were within the 0.8 µm Ra class while all Rt values were < 5 µm. Keywords
Green Ceramics, Pellet Additive Manufacturing, Milling, Surface Topography, Hybrid Manufacturing

Published online 4/19/2023, 9 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: SPITAELS Laurent, RIVIÈRE-LORPHÈVRE Edouard, MARTIC Grégory, JUSTE Enrique, DUCOBU François, Machining of PAM green Y-TZP: Influence of build and in-plane directions on cutting forces and surface topography, Materials Research Proceedings, Vol. 28, pp 1245-1253, 2023


The article was published as article 135 of the book Material Forming

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