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Title: Application of nitriding and duplex treatment on steel drills-HSS
Authors: Feitor, Michelle Cequeira
Serra, Petteson Linniker Carvalho
Sousa, Rômulo Ribeiro Magalhães de
Barros Neto, João Rodrigues de
Libório, Maxwell Santana
Costa, Thércio Henrique de Carvalho
Keywords: Plasma nitriding;Duplex treatment;Drills;High-speed steel (HSS);Drilling
Issue Date: Apr-2020
Publisher: JMEST
Citation: SERRA, P.L.C.; Sousa, R.R.M.; BARROS NETO, J.R.; LIBORIO, M.S.; FEITOR, M.C.; COSTA, T.H.C.; FURTADO, A.S.. Application of nitriding and duplex treatment on steel drills-HSS. Journal of Multidisciplinary Engineering Science and Technology (JMEST), v. 7, n. 4, p. 11699-11708, abr. 2020. Disponível em: Acesso em 14 abr. 2021.
Portuguese Abstract: The present study aims to evaluate the application of plasma nitriding (at temperatures of 450° and 500°C) and duplex treatment (conventional nitriding followed by TiN deposition, using the cathodic cage deposition technique). Samples were characterized by Vickers Microhardness Test, Scanning Electron Microscopy-SEM, and Energy Dispersion Spectroscopy-EDS. Drill performance was evaluated after machining SAE1045 steel specimens, using flank wear and hole diameter measurements. The performance test pointed to the viability of the treatment at 450°C, whose treated drill had a longer life than in the untreated drill, in addition to meeting the dimensional quality in all holes. In contrast, the other tools, nitrided at 500°C and submitted to the duplex treatment, they presented performance below the expected, not showing viability for application in these conditions. Additionally, it was observed the existence of a thermal gradient formed during the treatment
ISSN: 2458-9403
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