Study on Ultrasonic Assisted Electrochemical Drill-Grinding of Superalloy

Kong, Huanghai; Liu, Yong; Zhu, Xiangwei; Peng, Tengfei

doi:10.3390/chemosensors8030062

Cited by 9 publications

(7 citation statements)

References 30 publications

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“…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%

“…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. Liu et al [ 8 , 9 ] developed an ultrasonic-assisted electrochemical drill-grinding machine tool for dealing with the precision machining of small holes with a diameter of 1.8 mm. They studied the ultrasonic-assisted electrochemical drill-grinding of 304 stainless steel plates with a thickness of 0.5 mm using metal bonded diamond ball head grinding tools.…”

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: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Jiao

Bie

et al. 2023

Micromachines

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“…Through the experiment, it was found that the efficiency and precision of the special section tube micro-groove machining could be improved by using synchronous laser-assisted STEM. Huang et al [ 26 ] proposed the ultrasonic-assisted electrochemical drill-grinding technology to reduce the surface roughness of the hole sidewall of the nickel-based superalloys from Ra 0.99 to Ra 0.14 µm. The existing research found that the electrochemical mechanical machining process could not only ensure the machining accuracy but also improved the harmonic profile with high frequency.…”

Section: Introductionmentioning

confidence: 99%

Profile Evolution and Cross-Process Collaboration Strategy of Bearing Raceway by Centerless Grinding and Electrochemical Mechanical Machining

Yan

Fan

et al. 2022

Micromachines

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Roundness is one of the most important evaluation indexes of rotary parts. The formation and change of roundness in the machining of parts is essentially the formation and genetic process of profile. Centerless positioning machining is one of the main surface finishing methods of rotary parts. The rounding mechanism of centerless positioning machining determines its unique roundness profile formation and genetic characteristics. How to eliminate the roundness error of centerless positioning machining has become one of the important issues in the research of high-precision rotary part machining. This paper explores the influence of process parameters on the roundness error from the perspective of profile evolution during centerless grinding and electrochemical mechanical machining, with the aim of providing a cross-process collaboration strategy for improving bearing raceway accuracy. Through an experiment of centerless grinding, the influence law and mechanism of process parameters on the profile are discussed. On this basis, electrochemical mechanical machining experiments are designed to explore the variation rules and mechanisms of different profile shapes in the machining process. The cross-process collaboration strategy is studied, and reasonable parameters of centerless grinding and electrochemical mechanical machining are determined. The results show that in the centerless grinding stage, increasing the support plate angle can form a multiple-lobe profile with high frequency within a wide range of process parameters. Electrochemical mechanical machining can effectively smooth the high-frequency profile and appropriately expanding the cathode coverage can improve the roundness error and reduce the requirement of initial accuracy of a multiple-lobe profile workpiece to a certain extent. Therefore, the combined machining technology of “centerless grinding + electrochemical mechanical machining” provides an efficient technical means to realize the precision machining of rotary parts such as bearing raceways.

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“…Traditional ECG usually uses conductive grinding heads with abrasive grains for material removal 3 . In recent years, to further improve the processing quality, methods such as ultrasonic-assisted ECG 4 , 5 , electrochemical jet-assisted grinding 6 , dry electrochemical mechanical machining 7 , and abrasive-free electrochemical mechanical machining 8 have been developed, and the application of ECG in the processing of metals and semiconductor materials has been promoted by these methods. In addition, many scholars have tried to promote the matching effect of dissolution and grinding by improving the flow field distribution.…”

Section: Introductionmentioning

confidence: 99%

Flow field characteristics and experimental research on inner-jet electrochemical face grinding of SUS420J2 stainless steel

Feng

et al. 2022

Sci Rep

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Electrochemical grinding (ECG) is processed by the combination of dissolution and grinding. It is very suitable for the processing of difficult-to-cut stainless steel, but its processing performance is restricted by the matching effect of dissolution and grinding. In this work, the processing of the torus surfaces of the stainless steel shaver cap was taken as the research object. A flow field model including the through-hole structure and the rotation of the grinding head was proposed to optimize the flow field distribution and promote the uniform dissolution of materials. The flow field simulation results showed that the rotational flow formed by the high-speed rotation prolonged the electrolyte flow path and was not conducive to the discharge of electrolytic products, and the reasonable selection of the diameter and distribution of the through-hole could reduce the velocity difference. The effects of rotational speed, feed rate, and inlet pressure on the flatness and surface roughness of the torus surfaces were experimentally investigated, and a better matching effect of dissolution and grinding was obtained. Moreover, the experimental results showed that the inner-jet ECG had a good prospect in the batch processing of high-hardness stainless steel parts.

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Study on Ultrasonic Assisted Electrochemical Drill-Grinding of Superalloy

Cited by 9 publications

References 30 publications

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

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

Profile Evolution and Cross-Process Collaboration Strategy of Bearing Raceway by Centerless Grinding and Electrochemical Mechanical Machining

Flow field characteristics and experimental research on inner-jet electrochemical face grinding of SUS420J2 stainless steel

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