Mitigation of gravity-induced distortions of binder-jetting components during rotational sintering
Artikel i vetenskaplig tidskrift, 2024

Using theory and simulations, the challenge of gravity-induced distortions during sintering is addressed and a mitigation strategy is proposed. Based on the continuum theory of sintering, the finite element simulation demonstrates the advantages of a rotating furnace to counteract gravity forces during sintering. Its application for stainless steel hollow parts produced by additive manufacturing (binder jetting) is demonstrated, numerically, for reliable industrial production of complex shapes. Sintering a tube in a very slow rotating motion exhibits an improvement in the final deformation ratio compared to a conventional sintering process. The same concept has been adapted for higher furnace revolution speeds and the centrifugal force is now surpassing the effects of gravity. An extended study of sintering under microgravity for space-borne applications is also widely depicted with the same model. Indeed, it shows the possibility of reproducing Earth's sintering conditions at places where gravity is insufficient to provide acceptable densification and shape conservation during sintering.



Binder jetting

Rotating sintering

Finite element methods


Thomas Grippi

San Diego State University

Elisa Torresani

San Diego State University

Alberto Cabo Rios

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Andrii L. Maximenko

San Diego State University

Marco Zago

Universita degli Studi di Trento

Ilaria Cristofolini

Universita degli Studi di Trento

Alberto Molinari

Universita degli Studi di Trento

Rajendra K. Bordia

Clemson University

Eugene Olevsky

San Diego State University

University of California

Additive Manufacturing Letters

27723690 (eISSN)

Vol. 10 100215


Metallurgi och metalliska material



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