article.page.titleprefix An experimental study on ultrasonic-assisted drilling of Inconel 718 under different cooling/lubrication conditions
Date
2024-01
Journal Title
Journal ISSN
Volume Title
Publisher
The International Journal of Advanced Manufacturing Technology
Abstract
Ultrasonic-assisted drilling (UAD) is one of the efficient and innovative methods to improve the drillability of difficult-to-cut materials. In the present study, the UAD of Inconel 718 was investigated under different cooling and/or lubrication conditions. The drilling tests were carried out at a constant cutting speed (15 m/min) and a feed (0.045 mm/rev) using uncoated and TiAlN-coated solid carbide drills under dry, conventional cutting fluid (CCF), and minimum quantity lubrication (MQL) conditions. The applicability of UAD to drilling Inconel 718 was evaluated in terms of thrust force, surface roughness, roundness error, burr formation, subsurface microstructure and microhardness, tool wear, and chip morphology. The test results showed that when compared to conventional drilling (CD), UAD reduced the thrust force and improved the hole quality, tool life, and surface integrity under all conditions. Good surface finish, lower roundness error and minimum burr heights were achieved under CCF conditions. MQL drilling provided lower thrust forces, better tool performance and good subsurface quality characteristics. In addition, the simultaneous application of CCF-UAD and MQD-UAD showed significantly better performance, especially when using the coated tool.
Description
Published by The International Journal of Advanced Manufacturing Technology; https://doi.org/10.1007/s00170-023-12735-w; Ömer Faruk Erturun, Hasan Tekaüt Turkish Aerospace Industries Inc, Ankara, 06980, Turkey; Adem Çiçek, Department of Mechanical Engineering, Faculty of Engineering and Natural Sciences, Ankara Yıldırım Beyazıt University, Ankara, 06010, Turkey, https://orcid.org/0000-0002-9510-3242; Necati Uçak, Department of Mechanical Engineering, Faculty of Engineering and Natural Sciences, Ankara Yıldırım Beyazıt University, Ankara, 06010, Turkey, https://orcid.org/0000-0002-8582-5911; Ramazan Hakkı Namlu, Department of Manufacturing Engineering, Atılım University, Ankara, Turkey, Graduate School of Natural and Applied Sciences, Atılım University, Ankara, Turkey, https://orcid.org/0000-0002-7375-8934; Bahram Lotfi, Department of Manufacturing Engineering, Atılım University, Ankara, Turkey, https://orcid.org/0000-0002-3027-3734; Sadık Engin Kılıç, Department of Manufacturing Engineering, Atılım University, Ankara, Turkey, https://orcid.org/0000-0002-8928-7487.
Keywords
Inconel 718, ultrasonic-assisted machining, minimum quantity lubrication, hole quality, tool wear
Citation
http://hdl.handle.net/20.500.14411/1998