A comparative study of cemented carbide parts produced by solvent on granules 3D-printing (SG-3DP) versus press and sinter

Cemented carbide parts have been manufactured from WC-12Co granules by “Solvent on Granules 3D-Printing” and compared with reference parts produced by conventional press and sintering. SG-3DP consists in growing a green part layer-by-layer by selective solvent jetting on powder-polymer granule beds....

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Bibliographic Details
Published in:International journal of refractory metals & hard materials 2021-06, Vol.97, p.105515, Article 105515
Main Authors: Carreño-Morelli, E., Alveen, P., Moseley, S., Rodriguez-Arbaizar, M., Cardoso, K.
Format: Article
Language:English
Subjects:
Binder removal
Cemented carbides
Compacts
Comparative studies
Densification
Full density
Granular materials
Heat treating
Hot isostatic pressing
Indentation
Injection molding
Liquid phase sintering
Liquid phases
Percussion
Percussion drilling
SG-3DP
Sintering (powder metallurgy)
Solvent on granules 3D-printing
Solvents
Theoretical density
Three dimensional printing
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Summary:Cemented carbide parts have been manufactured from WC-12Co granules by “Solvent on Granules 3D-Printing” and compared with reference parts produced by conventional press and sintering. SG-3DP consists in growing a green part layer-by-layer by selective solvent jetting on powder-polymer granule beds. Both 3D printed green parts and uniaxially pressed compacts have been consolidated by thermal debinding and liquid phase sintering. Further densification has been achieved by hot isostatic pressing. 3D-printed parts subjected to hot isostatic pressing exhibit 99.9% of theoretical density, 1308 ± 10 HV30 hardness and 12.1 ± 0.3 MPa∙m½ indentation toughness, which are comparable to properties of a commercial fine grained WC-12Co. Percussion drilling tests with fully dense SG-3DP drill plates have also been carried out successfully on concrete. •Solvent on granules 3D-printing” (SG-3DP) is an effective Additive Manufacturing route to produce hard metal parts.•Fully dense WC-12Co parts successfully processed by SG-3DP technique followed by Hot isostatic pressing.•3D-printed part microstructure equivalent to press and sintering microstructures.•3D-printed drill bits show good shape retention and B04 porosity.•Functional parts processed and successful percussion drilling tests performed.
ISSN:0263-4368
2213-3917
DOI:10.1016/j.ijrmhm.2021.105515