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 produced conventional press sintering. SG-3DP consists in growing a green part layer-by-layer selective solvent jetting powder-polymer granule beds. Both 3D printed uniaxially pressed compacts consolidated thermal debinding liquid phase Further densification has achieved hot isostatic pressing. 3D-printed subjected to pressing exhibit 99.9% of theoretical density, 1308 ± 10 HV30 hardness 12.1 0.3 MPa?m½ indentation toughness, which are comparable properties commercial fine grained WC-12Co. Percussion drilling tests fully dense drill plates also carried out successfully concrete.