Application of nitriding and duplex treatment on steel drills-HSS
| Author | 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 | |
|---|---|---|
| Publisher | JMEST | |
| Date | 2020-04 | |
| Keywords | Plasma nitriding Duplex treatment Drills High-speed steel (HSS) Drilling | |
| Citation | ||
| 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 | |
| URI | https://repositorio.ufrn.br/handle/123456789/45516 | |
| Collections | CT - DET - Artigos publicados em periódicos |
|---|