Cemented carbide parts have been manufactured from WC-12Co granules by "Solvent on Granules3D-Printing" and compared with reference parts produced by conventional press and sintering. SG-3DPconsists 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 debindingand 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 HV30hardness and 12.1±0.3 MPa∙m½ indentation toughness, which are comparable to properties of a commercialfine grained WC-12Co. Percussion drilling tests with fully dense SG-3DP drill plates have also been carriedout successfully on concrete.
展开▼
