Efeitos da adição de níquel em ligas ferro- cromo. Parte II: tempo de vida da

Abstract The aim of this work was to study the influence ofNi content on coated cemented carbide tool wear duringthe machining process of stainless alloys. For thispurpose alloys were prepared with an 18%Cr-0.01%C-0.2%Si-0.4%Mn base composition and variable Nicontent (0, 10, 20, 40 and 60 weight %). Tests werecarried out with coated cemented carbide tools; classM15 with TiC/Al2O3/TiN coating. All alloys weremachined under the same process conditions(Vc = 230 m/min, ap = 0.6 mm and f = 0.1 mm/rotation),so the only variation source was the Ni content.Preliminary results indicate that the tool life lowerswhen Ni content rises. Keywords: Stainless steels, Ni alloys, tool wear,tribology, machinability. Efeitos da adicao de niquel em ligas ferro-cromo. Parte II: tempo de vida daferramenta em processo de torneamento Daniel Cirillo Marques Faculdade de Engenharia Mecânica da Unicamp, Campinas, SP. E-mail: dcirillo@fem.unicamp.br Celia Cristina Moretti Decarli Faculdade de Engenharia Mecânica da Unicamp, Campinas, SP. E-mail: cdecarli@fem.unicamp.br