Ultrasonic assisted electrolytic grinding of titanium alloy Ti-6Al-4V

Wu, Yilin; Li, Sisi; Nomura, Mitsuyoshi; Kobayahi, Satoshi; Tachibana, Toru

doi:10.1504/ijnm.2017.083852

Cited by 5 publications

(4 citation statements)

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“…According to their structural features and machining modes, machine tools are classified into vertical and horizontal. In previous research on UAECG [ 5 , 7 , 8 , 9 , 18 ], very small lightweight conductive grinding wheels and integrated ultrasonic electric spindles were used; the conductive grinding wheel on-machine dressing was not considered, and all machine tools were all vertical structures. For the ICUAECG, a large conductive grinding wheel and ordinary grinding electric spindle are used, the ultrasonic vibration system needs to be installed, the volume and weight of the grinding electric spindle and conductive grinding wheel are large, and considering the conductive grinding wheel on-machine dressing, the horizontal structure is appropriate for the special machine tool.…”

Section: Structural Design Of Special Machine Toolmentioning

confidence: 99%

“…Ultrasonic-assisted electrochemical grinding (UAECG) is a novel hybridized electrochemical grinding technology developed by combining ultrasonic vibration-assisted machining [ 3 , 4 ] and electrochemical grinding [ 5 , 6 ]. Compared with ordinary ECG, the UAECG process is more stable [ 7 ], the grinding force is smaller [ 5 , 7 ], the conductive grinding wheel wear is alleviated [ 5 ], and the machined surface roughness is reduced [ 5 , 7 , 8 , 9 ]. Therefore, with high-end equipment and precision machinery technology development, UAECG is receiving increasing attention and application in industry.…”

Section: Introductionmentioning

confidence: 99%

“…For UAECG, Wu et al [ 5 , 7 , 18 ] developed an ultrasonic-assisted electrochemical mill-grinding vertical machine tool by installing an ultrasonic electric spindle on a 3-axis NC machine tool. They studied the planar ultrasonic-assisted electrochemical mill-grinding of Ti-6Al-4V with a metal-bonded CBN grinding wheel of 1.8 mm in diameter.…”

Section: Introductionmentioning

confidence: 99%

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Structural Design of a Special Machine Tool for Internal Cylindrical Ultrasonic-Assisted Electrochemical Grinding

Jiao

Bie

et al. 2023

Micromachines

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During the process of internal cylindrical ultrasonic-assisted electrochemical grinding (ICUAECG), both the workpiece and the conductive grinding wheel are rotating, the machining space is closed and narrow, the electrolyte is difficult to spray into the machining area, and the insulation between the workpiece and the machine bed is challenging. According to the machining characteristics of ICUAECG, the structure of a special machine tool was designed to mitigate these problems. In particular, the rotation, electrolyte supply, electric connection, and insulation modes of the workpiece clamping parts were studied, yielding a novel workpiece clamping- and rotating-device design. This structure can fully use the internal space of the hollow spindle of the machine tool, effectively reduce the external moving parts, and achieve the appropriate liquid injection angle of the electrolyte. The ultrasonic vibration system and its installation mechanism, the dressing device of the conductive grinding wheel, and the electric grinding spindle-mounting and -fixing device were analyzed in detail. Then, a special machine tool for ICUAECG was designed, the operability and feasibility of which were verified by experiments involving conductive grinding wheel dressing and ICUAECG.

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Section: Structural Design Of Special Machine Toolmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structural Design of a Special Machine Tool for Internal Cylindrical Ultrasonic-Assisted Electrochemical Grinding

Jiao

Bie

et al. 2023

Micromachines

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“…S.S. Li, et al was conducted to compare and analyze the difference in cutting force of workpieces between UAECG technology and ultrasonic-assisted pulse electrochemical grinding processing technology. The results showed that the normal stress and tangential stress of ultrasonicassisted electrochemical grinding are respectively reduced by about 57% and 56% in comparison with that of traditional grinding [20][21][22].…”

Section: Introductionmentioning

confidence: 96%

Effects of processing parameters on the surface quality of wrought Ni-based superalloy by ultrasonic-assisted electrochemical grinding

Yin

Zhang

et al. 2022

Int J Adv Manuf Technol

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Ni-based GH625 superalloy has been widely employed in the aerospace industry due to its high strength, outstanding corrosion resistance and high temperature resistance. A novel hybrid processing method of ultrasonic-assisted electrochemical grinding (UAECG) can achieve the high-effective removal rate for difficult-to-process materials and thereby avoids the stray corrosion during the process. This study systematically investigated the electrochemical dissolution behaviors of GH625 alloy at low current density and effects of processing parameters on its surface roughness. A qualitative model was proposed to further reveal its removal mechanism for GH625 alloy during UAECG process. Polarization curves depicted that an efficient and stable electrochemical dissolution was achieved at an appropriate temperature (20℃) and concentration (10 wt.%) of NaNO3 electrolyte. The findings also revealed that selective corrosion preferentially occurred on the grain boundary or near the NbC carbides under different current density corrosion circumstance. Compared with ECG process, the excellent surface quality (Ra = 0.37 μm) and taper of the small holes (taper = 0.04 ± 0.005°) are obtained at the optimized condition of pulse voltage of 5.8V, feed rate of 0.6mm /min, cathode speed of 12kr /min and ultrasonic drive amplitude of 60 % by UAECG technology.

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