{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,22]],"date-time":"2025-05-22T04:48:10Z","timestamp":1747889290400,"version":"3.41.0"},"reference-count":11,"publisher":"Trans Tech Publications, Ltd.","license":[{"start":{"date-parts":[[2022,7,22]],"date-time":"2022-07-22T00:00:00Z","timestamp":1658448000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2022,7,22]],"date-time":"2022-07-22T00:00:00Z","timestamp":1658448000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.scientific.net\/license\/TDM_Licenser.pdf"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["KEM"],"abstract":"<jats:p>The three cutting edge drills are not the most common drills, nevertheless, are characterized by superior stability, excellent precision and finishing, due to the intersection of three cutting edges at one point. In general, stainless steels are considered as difficult to machine materials due to their tendency to work harden, their toughness and relatively low conductivity, leading to poor surface finish, poor chip breaking and built-up-edge formation. In the case of duplex stainless grades, the high strength, and the very good corrosion resistance, only compared with austenitic steels, make these materials as an alternative to the austenitic stainless steels, with superior mechanical properties. In this study, the performance of the drills with two and three cutting edges were evaluated in the drilling of duplex stainless steels, when low-pressure external cooling or high-pressure internal cooling were applied. Whether used drills of two or three cutting edges, the most important factor to increase the number of holes made, is the use of high-pressure internal cooling, in detriment of external low-pressure external cooling. The drills of three cutting edges have better results in roughness and dimensional tolerance of the holes. However, these drills proved to be more fragile and more sensitive to the cutting parameters. The use of three cutting edges drills is recommended for situations where hole quality is more important, while two cutting edges drills is recommended for situations where productivity is the main objective.<\/jats:p>","DOI":"10.4028\/p-9qxyt3","type":"journal-article","created":{"date-parts":[[2022,7,22]],"date-time":"2022-07-22T11:34:13Z","timestamp":1658489653000},"page":"1660-1670","source":"Crossref","is-referenced-by-count":0,"title":["Comparative Study of the Drilling Operation in Duplex Stainless Steels with Drills of Two and Three Cutting Edges"],"prefix":"10.4028","volume":"926","author":[{"given":"Jo\u00e3o","family":"Marouvo","sequence":"first","affiliation":[{"name":"Polytechnic Institute of Coimbra"}]},{"given":"Pedro","family":"Ferreira","sequence":"additional","affiliation":[{"name":"Polytechnic Institute of Coimbra"}]},{"given":"Fernando","family":"Sim\u00f5es","sequence":"additional","affiliation":[{"name":"Polytechnic Institute of Coimbra"}]}],"member":"2457","published-online":{"date-parts":[[2022,7,22]]},"reference":[{"key":"4593918","unstructured":"Information on https:\/\/www.britannica.com\/technology\/stainless-steel."},{"key":"4593919","doi-asserted-by":"crossref","unstructured":"R. Venkata Rao, Machinability evaluation of work materials using graph theory and analytic hierarchy process methods, Manufacturing Technology. 28 (2004) 221-227.","DOI":"10.1007\/s00170-004-2348-4"},{"key":"4593920","unstructured":"A. Kulkarni, G. Joshi, and V. Sargade, Design optimization of cutting parameters for turning of AISI 304 austenitic. Indian Journal of Engineering & Material Science, 20 (2013) 252-258."},{"issue":"1-2","key":"4593921","doi-asserted-by":"publisher","first-page":"20","DOI":"10.1016\/j.wear.2013.04.008","article-title":"Machinability study of first generation duplex (2205), second generation duplex (2507) and austenite stainless steel during drilling process","volume":"304","author":"Nomani","unstructured":"J. Nomani, A. Pramanik, T. Hilditch, and G. Littlefair, Machinability study of first generation duplex (2205), second generation duplex (2507) and austenite stainless steel during drilling process. Wear, 304 (2013) 20-28.","journal-title":"Wear"},{"key":"4593922","doi-asserted-by":"publisher","unstructured":"R. Bertelli, R. Cristel, G. Melotti, and T. Ceccon, Stainless steels machinability assessment model. Advanced Manufacturing Systems and Technology, 486 (2005) 577-588.","DOI":"10.1007\/3-211-38053-1_56"},{"issue":"1-3","key":"4690306","doi-asserted-by":"publisher","first-page":"203","DOI":"10.1016\/s0924-0136(98)00396-3","article-title":"Cutting performance of different coated twist drills","volume":"88","author":"Chen","unstructured":"W.C. Chen, C.C. Tsao, Cutting performance of different coated twist drills. Journal of Materials Processing Technology, 88 (1999) 203-207.","journal-title":"Journal of Materials Processing Technology"},{"issue":"4","key":"4593924","doi-asserted-by":"publisher","first-page":"461","DOI":"10.1016\/0890-6955(88)90059-4","article-title":"New type drill with three major cutting edges","volume":"28","author":"Ema","unstructured":"S. Ema, H. Fujii, E. Marui, and S. Kato, New type drill with three major cutting edges. International Journal of Machine Tools and Manufacture, 28 (1988) 461-473.","journal-title":"International Journal of Machine Tools and Manufacture"},{"issue":"3","key":"4593925","doi-asserted-by":"publisher","first-page":"361","DOI":"10.1016\/0890-6955(91)90081-d","article-title":"Cutting performance of drills with three cutting edges (effects of chisel edge shapes on the cutting performance)","volume":"31","author":"Ema","unstructured":"S. Ema, H. Fujii, and E. Marui, Cutting performance of drills with three cutting edges (effects of chisel edge shapes on the cutting performance). International Journal of Machine Tools and Manufacture, 31 (1991) 361-369.","journal-title":"International Journal of Machine Tools and Manufacture"},{"key":"4593926","doi-asserted-by":"publisher","unstructured":"J. Agapiou, Design characteristics of new types of drill and evaluation of their performance drilling cast iron - II. Drills with three major cutting edges. International Journal of Machine Tools and Manufacture, 33(3) (1993) 343-365.","DOI":"10.1016\/0890-6955(93)90046-w"},{"key":"4690307","doi-asserted-by":"publisher","first-page":"60","DOI":"10.1016\/j.mfglet.2019.08.006","article-title":"Early detection of drilling tool wear by vibration data acquisition and classification","volume":"21","author":"Dheeraj Simon","unstructured":"G.D. Simon and R. Deivanathan, Early detection of drilling tool wear by vibration data acquisition and classification. Manufacturing Letters, 21 (2019) 60-65.","journal-title":"Manufacturing Letters"},{"key":"4593928","doi-asserted-by":"publisher","first-page":"29","DOI":"10.1016\/j.wear.2015.04.018","article-title":"Wear and breakage of TiAlN- and TiSiN-coated carbide tools during high-speed milling of hardened steel","volume":"336-337","author":"Wang","unstructured":"C. Wang, Y. Xie, Z. Qin, H. Lin, Y. Yuan and Q. Wang, Wear and breakage of TiAlN- and TiSiN-coated carbide tools during high-speed milling of hardened steel. Wear, 2015 336-337.","journal-title":"Wear"}],"container-title":["Key Engineering Materials"],"original-title":[],"link":[{"URL":"https:\/\/www.scientific.net\/KEM.926.1660.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,5,21]],"date-time":"2025-05-21T20:39:07Z","timestamp":1747859947000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.scientific.net\/KEM.926.1660"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,7,22]]},"references-count":11,"URL":"https:\/\/doi.org\/10.4028\/p-9qxyt3","relation":{},"ISSN":["1662-9795"],"issn-type":[{"type":"electronic","value":"1662-9795"}],"subject":[],"published":{"date-parts":[[2022,7,22]]}}}