Three-dimensional printing of hard materials

Tungsten cemented carbide parts have been produced by the “Solvent on Granule” 3D-Printing technique. It consists in growing layer-by-layer a green part by spreading a powder-polymer granule bed, followed by selective solvent jetting, and layer consolidation after solvent evaporation. The granules a...

Full description

Saved in:
Bibliographic Details
Published in:International journal of refractory metals & hard materials 2020-02, Vol.87, p.105110, Article 105110
Main Authors: Carreño-Morelli, E., Alveen, P., Moseley, S., Rodriguez-Arbaizar, M., Cardoso, K.
Format: Article
Language:English
Subjects:
Binder removal
Cemented carbides
Cobalt
Drill bits
Fully dense sintering
Granular materials
Hard materials
Liquid phase sintering
Liquid phases
Rapid prototyping
Solvent on granule 3D-printing
Solvents
Three dimensional printing
Tolerances
Tungsten carbide
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Tungsten cemented carbide parts have been produced by the “Solvent on Granule” 3D-Printing technique. It consists in growing layer-by-layer a green part by spreading a powder-polymer granule bed, followed by selective solvent jetting, and layer consolidation after solvent evaporation. The granules are prepared by wet blending, drying, milling and sieving to appropriate size range. The printed green parts are consolidated by thermal debinding and liquid phase sintering. Fully dense WC-Co test parts and a drill bit have been produced from presintered powder and elementary Co powder. The microstructures are equivalent to those of press and sintered parts. Good shape retention and tolerances are achieved. •« Solvent on granule » 3D-printing is an effective Additive Manufacturing route to produce hard metal parts•Granules prepared from presintered WC-Co powder and additional elementary Co•3D-printed dense WC-17.7Co parts•3D-printed part microstructure equivalent to press and sintering microstructures•Complex 3D-printed drill bit shows good shape retention and porosity less than A04
ISSN:0263-4368
2213-3917
DOI:10.1016/j.ijrmhm.2019.105110