FEMTOSECOND LASER TEXTURING EFFECT ON ABRASIVE WEAR OF CEMENTED CARBIDE TOOLS
Pâmella Jureves Esteves1; Antônio Cesar Bozzi1; Cherlio Scandian1; Ricardo Elgul Samad2; Nilson Dias Vieira Júnior2; Wagner de Rossi2; Rui Vilar3; Marcelo Bertolete Carneiro4; Patrícia Alves Barbosa5
1 Federal University of Espírito Santo; 2 Nuclear and Energy Research Institute; 3 Instituto Técnico Superior, Technical University of Lisbon; 4 Nuclear and Energy Research Institute and School of Engineering of São Carlos; 5 Nuclear and Energy Research Institute and Federal University of Espírito Santo
doi:10.20906/CPS/COB-2015-0821
Resumo
The objective is to investigate the femtosecond laser texturing effect on abrasive wear of cemented carbide tools. Therefore, micro-abrasive wear tests with fixed ball configuration were performed on non-textured and textured rake face. A SiC abrasive slurry with a concentration of 0.52 gSiC/cm³H2O and counterbody made of AISI 52100 hardened steels ball with 25.4 mm in diameter were used. Ball rotational speed and normal load were kept constant during the tests in 36.7 rpm and 1.25 N, respectively. The output variable used in this study was wear coefficient. Among the three microtexture patterns evaluated, the micro-grooves on Rake face 2 and 3 have shown promise for improving tribological performance, since there was wear coefficient reduction about 13.7% and 24.5%.
Palavras-chave: texturing; femtosecond laser; cemented carbide tool; micro-abrasion; wear coefficient