Experimental Investigation of Ultrasonic Vibration Assisted Turning of 304 Austenitic Stainless Steel

Abstract

This research study focuses on the experimental analysis of the three-dimensional (3D) surface topography and surface roughness of the workpiece machined with ultrasonic vibration assisted turning (UAT) in comparison to conventional turning (CT). For the challenge that machining difficulties of 304 austenitic stainless steel (ASS 304) and high demands for the machined surface quality and machining precision represent, starting with cutting principle and processing technology, the ultrasonic vibration method is employed to scheme out a machining system of ultrasonic vibration assisted turning (MS-UAT). The experiments for turning the workpiece of ASS 304 are conducted with and without ultrasonic vibration using the designed MS-UAT, and then the 3D morphology evaluation parametersSaandSqare applied to characterize and analyse the machined surface. The experimental results obtained demonstrate that the process parameters in UAT of ASS 304 have obvious effect on the 3D surface topography and surface roughness of machined workpiece, and the appropriate choice of various process parameters, including ultrasonic amplitude, feed rate, depth of cut, and cutting speed, can enhance the machined surface quality efficiently to make the machining effect of UAT much better than that of CT.

Study of ultrasonic vibration–assisted thread turning of Inconel 718 superalloy

“…The chip edge would even bond with the insert, reducing surface quality. [29][30][31][32] As shown in Figure 12, in the study of the effect of UVAT on chip morphology, chips were obtained under different cutting speeds using the CT and UVAT methods. By comparing the characteristics of chip shapes, it can be seen that both the UVAT and the CT method can generate clumped chips.…”

Experimental study on chip shape in ultrasonic vibration–assisted turning of 304 austenitic stainless steel

“…The chips generated by the CT with serrated burrs and many surface defects are extremely detrimental to the highquality machining, which gives rise to uneven friction in the cutting area, which results in high temperature, large cutting force, high regenerative chatter, and fast tool wear. 11,19 On the contrary, owing to intermittent role between cutting tool and workpiece, chips are generated in UAT, which edges are relatively slick and surface defects are less. The above negative phenomena which are facile to occur in CT are obviously improved in UAT.…”

“…21 After adopting ultrasonic vibration, turning process has been immensely improved, and excellent process effect has been diffusely concerned. [9][10][11][12][13][14][15][16][17][18][19][20][21] The 304 austenitic stainless steel, which is a representative difficult-to-cut material, has a wide range of applications and a large amount of usage, but it is difficult to machine, and its mechanical machining property is more difficult than other alloy steels. 1,22 Hence, it is very meaningful to implement high-quality and highefficient machining on 304 austenitic stainless steel, and the problem of difficult machining is figured out commendably using UAT.…”

Research on an Ultrasonic Cutting Device Based on 0Cr18Ni9

“…In comparison with conventional processing schemes, ultrasonic machining has salient advantages, such as small cutting force, low cutting heat, high surface quality of the workpiece, smooth chip removal, and high production efficiency i [3,4]. Hence, it can be a potentially good solution to these difficult processes of materials, nonmetallic materials, and high surface quality requirements of parts machining problems [5,6].…”