Gravitational mass flow measurements of various granular materials in relation to an extended Bond number

Angle of repose; Beverloo law; Cemented carbides; Granular bond number; Granular flowability; RTP-powder; Bond numbers; Flowability; Gravitational mass; Mass flow measurement; Ceramics and Composites; Mechanics of Materials; Mechanical Engineering; Metals and Alloys; Materials Chemistry; General Earth and Planetary Sciences; General Environmental Science

Abstract :

[en] Uniaxial die pressing is a commonly used shaping technique in powder metallurgy. The initial step within the compression cycle is the filling process of the cavity with granular materials. Here, the goal is to have a reproducible cavity filling to manufacture compressed parts of consistent quality. Besides effects linked to the geometry of the cavity and the mechanisms of filling, the flowability of the granular material plays a major role. Therefore, a deeper understanding of the flow behaviour is in the centre of the present study. In order to assess the flowability, two different experimental methods are used. Granular materials of the same composition but different granular size distributions are characterised by angle of repose (AOR) and mass flow rate measurements. The two methods deliver a set of parameters that are compared using the granular Bond number. Based on the empirical findings, a modification of the granular Bond number is suggested.

Disciplines :

Physics

Author, co-author :

JUST, Marvin ^✱; University of Luxembourg ; CERATIZIT Luxembourg S.à r.l.

MEDINA PESCHIUTTA, Alexander ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) ; CERATIZIT Luxembourg S.à r.l.

Hippe, F.; CERATIZIT Luxembourg S.à r.l.

Useldinger, R.; CERATIZIT Luxembourg S.à r.l.

BALLER, Jörg ^✱; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)

^✱ These authors have contributed equally to this work.

External co-authors :

Language :

English

Title :

Gravitational mass flow measurements of various granular materials in relation to an extended Bond number

Publication date :

April 2023

Journal title :

International Journal of Refractory Metals and Hard Materials

ISSN :

0263-4368

Publisher :

Elsevier Ltd

Volume :

112

Pages :

106142

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://api.elsevier.com/content/article/PII:S0263436823000422?httpAccept=text/xml

FnR Project :

FNR13320318 - Metal Powder Flow, 2018 (15/04/2019-14/04/2023) - Marvin Just
FNR14187658 - Rheology Of Hard Metal Pastes., 2019 (01/02/2020-31/01/2024) - Alexander Medina Peschiutta

Name of the research project :

MEPFLOW, RHAMEP

Funders :

FNR - Luxembourg National Research Fund
CERATIZIT Luxembourg S.à r.l.

Funding text :

This work was funded in whole, or in part, by the Luxembourg National Research Fund and by CERATIZIT Luxembourg S.à r.l . with two Industrial Fellowships grants. Grant acronyms and references are MEPFLOW [ 13320318 ] and RHAMEP [ 14187658 ].This work was funded in whole, or in part, by the Luxembourg National Research Fund and by CERATIZIT Luxembourg S.à r.l. with two Industrial Fellowships grants. Grant acronyms and references are MEPFLOW [13320318] and RHAMEP [14187658].

Data Set :

10.1016/j.ijrmhm.2023.106142

Available on ORBilu :

since 28 September 2023

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