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Faculté des Sciences appliquées
Faculté des Sciences appliquées
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Travail de fin d'études et stage[BR]- Travail de fin d'études : Study and design of a recycling process by magnetic separation of unmelted bimetallic powder from L-PBF[BR]- Stage d'insertion professionnelle

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Vandermolen, Marie-Anne ULiège
Promotor(s) : Bruls, Olivier ULiège
Date of defense : 28-Jan-2022 • Permalink : http://hdl.handle.net/2268.2/13890
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Title : Travail de fin d'études et stage[BR]- Travail de fin d'études : Study and design of a recycling process by magnetic separation of unmelted bimetallic powder from L-PBF[BR]- Stage d'insertion professionnelle
Author : Vandermolen, Marie-Anne ULiège
Date of defense  : 28-Jan-2022
Advisor(s) : Bruls, Olivier ULiège
Committee's member(s) : Mertens, Anne ULiège
Duysinx, Pierre ULiège
Marchal, Martin 
Language : English
Number of pages : 127
Keywords : [en] powder
[en] aerosint
[en] metal
[en] maraging
[en] M300
[en] 316L
[en] CuCrZr
[en] magnetic separation
[en] additive manufacturing
[en] powder bed fusion
[en] laser
Discipline(s) : Engineering, computing & technology > Civil engineering
Funders : Aerosint
Research unit : Université de Liège
Target public : Researchers
Professionals of domain
Student
General public
Institution(s) : Université de Liège, Liège, Belgique
Degree: Master : ingénieur civil mécanicien, à finalité spécialisée en mécatronique
Faculty: Master thesis of the Faculté des Sciences appliquées

Abstract

[fr] Laser Powder Bed Fusion (LPBF) process allows powders of different materials to be selectively melted together. However, the unsintered powders are mixed together and therefore cannot be used anymore. To reduce waste, a method to separate powders presents a great interest. The goal of this thesis is to find and design a method to separate two powder mixes: 316L/CuCrZr and M300/CuCrZr. The difficulty lies in similar powder properties, such as density, particle size distribution and electrical resistivity. After discussion on different separation methods, the focus will be on magnetic separation process. For the 316L/CuCrZr couple, it appears that 316L shows a ferromagnetic behaviour only for smallest particles. This heterogeneous magnetic property makes a separation by magnetism difficult to achieve. On the other side, since M300 presents strong ferromagnetic behaviour, while CuCrZr a non-magnetic one, a magnetic-based separation is considered for this couple. A prototype is developed, based on free-fall separation and powered by an ultrasonic device. Some issues are raised and system parameters are discussed to find an optimal solution for the separation process.


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Author

  • Vandermolen, Marie-Anne ULiège Université de Liège > Master ing. civ. méc., à fin.

Promotor(s)

Committee's member(s)

  • Mertens, Anne ULiège Université de Liège - ULiège > Département d'aérospatiale et mécanique > Metallic materials for additive manufacturing
    ORBi View his publications on ORBi
  • Duysinx, Pierre ULiège Université de Liège - ULiège > Département d'aérospatiale et mécanique > Ingénierie des véhicules terrestres
    ORBi View his publications on ORBi
  • Marchal, Martin AEROSINT
  • Total number of views 57
  • Total number of downloads 1










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