Abstract
The machinability of titanium alloys (Ti-6Al-4V) have been reviewed in many publications recently special grinding and mill-ing as these are among the key processes for the production of compressor and turbine blades for jet engine, where high heat resistance materials are preferred. Titanium alloys differ from other metallic materials, because of its low density, high strength to weight ratio, low thermal conductivity and high resistance to corrosion and erosion. These aerospace materials have been under investigation for a possible replacement for nickel based super alloys in aircraft engines components because of weight issue. Since it has been difficult to be machined through the traditional grinding methods, vibration assisted machining technique (VAM) was introduced in the perpendicular direction of the grinding wheel to reduce cutting forces, energy consumption, wheel wear and to improve material removal rate, surface roughness and to extend the grinding tool life. Experiments were carried out under wet conditions, employing aluminium oxide (Al2O3) grinding wheel instead of super abrasive grinding wheels due to work-piece surface damage issues. The experimental results showed that implementing (VAM) in the axial direction of the spindle has reduced grinding forces by 40% and increased the materials removal rate by 25%. Consequently, energy consumption has been reduced and surface quality has been improved at specific boundary conditions (100 Hz vibration frequency, 130 µm vibration displacement, 17 m/s wheel speed and 250 mm/s feed rate) where burnout, chatter and crack disappeared.
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Ibrahim, E.E., Ewad, H., Chen, X., Batako, A.D.L. (2022). Grinding of Titanium Alloys (Ti-6Al-4V) Using Vibration Assisted Machining. In: Batako, A., Burduk, A., Karyono, K., Chen, X., Wyczółkowski, R. (eds) Advances in Manufacturing Processes, Intelligent Methods and Systems in Production Engineering. GCMM 2021. Lecture Notes in Networks and Systems, vol 335. Springer, Cham. https://doi.org/10.1007/978-3-030-90532-3_7
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