An experimental study on ultrasonic-assisted drilling of Inconel 718 under different cooling/lubrication conditions

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 c...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology 2024, Vol.130 (1-2), p.665-682
Main Authors: Erturun, Ömer Faruk, Tekaüt, Hasan, Çiçek, Adem, Uçak, Necati, Namlu, Ramazan Hakkı, Lotfi, Bahram, Kılıç, S. Engin
Format: Article
Language:English
Subjects:
Advanced manufacturing technologies
Aircraft
Aviation
CAE) and Design
Computer-Aided Engineering (CAD
Cooling
Cutting fluids
Cutting parameters
Cutting speed
Drilling
Engineering
Heat conductivity
Heat treating
Industrial and Production Engineering
Lubricants & lubrication
Lubrication
Manufacturing
Mechanical Engineering
Media Management
Microhardness
Nickel base alloys
Original Article
Roundness
Superalloys
Surface finish
Surface roughness
Thrust
Tool life
Tool wear
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Summary: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.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-023-12735-w