Das, R and Nayak, N and Barshilia, Harish C and Joshi, SS (2016) Wear and progression of life of plasma nitrided four-faceted high-speed steel drills with varying geometries. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 230 (10). pp. 1885-1896. ISSN 09544054
Full text not available from this repository.Abstract
TiN-coated high-speed steel drills are known to give improved performance. However, when coatings are coupled with a careful selection of drill geometry parameters, the performance can be improved further. Consequently, in this work, progression of flank wear land width on four-faceted split-point plasma nitrided high-speed steel drills with varying point and helix angles in drilling of SS304 was analyzed along with a conventional drill with a point angle of 118°. Elaborate experimentation was undertaken to test the drills and capture the effect of flank wear on the drill performance. The drills with moderate point angle of 124° outperformed other drills with point angles of 130° and 118°. As the wear progresses, the thrust and torque show a minor increase in the case of four-faceted drills as compared to the conventional drills. Abrasion and chipping were found to be the dominant wear mechanisms while drilling SS304, whereas major drill failure mechanisms appear to be excessive abrasive wear followed by chipping.
| Item Type: | Article |
|---|---|
| Subjects: | ENGINEERING > Mechanical Engineering PHYSICS > Plasma Physics |
| Depositing User: | Mrs SK Pratibha |
| Date Deposited: | 18 Feb 2019 08:40 |
| Last Modified: | 18 Feb 2019 08:40 |
| URI: | http://nal-ir.nal.res.in/id/eprint/13071 |
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