A Comparison between Ultrasonic Machining and Traditional Machining on Inconel 718 to Assess the Parameters Including Surface Roughness, Tool Wear, and the Cutting Force

چکیده مقاله

Ultrasonic vibration-assisted (UVAM) machining is a valuable process for precision machining of hard and brittle materials. In this study, in order to improve the machining conditions of Inconel 718 alloy, longitudinal ultrasonic vibrations in the range of 25 kHz with an oscillation amplitude of 15 microns are exerted on the workpiece during traditional machining. Machining forces, surface roughness, and tool wear have decreased by 18%, 10%, and 8% on average, respectively, compared with those in traditional machining, and surface quality has been improved. By reducing the feed rate, cutting speed, the amount of loading and the oscillation amplitude of the tool, surface quality, tool wear and cutting forces increase. A scanning electron microscope is used to measure surface hardness and chip hardness. In total, UVAM machining has a better performance than traditional machining in terms of surface roughness, tool wear, and cutting forces. And also due to use of a scanning electron microscope, surface hardness and chip hardness are measured with better quality and less hardness in UVAM machining than in traditional machining.

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