Softness abrasive flow polishing method using constrained boundary vibration

The polishing efficiency of the soft abrasive flow (SAF) method is low, especially for the hard-brittle materials. To resolve this problem, an abrasive flow polishing method using ultrasonic vibration is proposed. The polishing mechanism is first introduced, then the Euler multiphase model is used t...

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Bibliographic Details
Published in:Powder technology 2021-04, Vol.382, p.173-187
Main Authors: Ge, Jiangqin, Li, Chao, Gao, Zhengyong, Ren, Yile, Xu, Xinsheng, Li, Chen, Xie, Yi
Format: Article
Language:English
Subjects:
Amplitudes
Boundary vibration
Brittle materials
Computational fluid dynamics
Dynamic pressure
Efficiency
Fluid flow
Hard-brittle materials
Kinetic energy
Polishing
Polishing efficiency
Soft abrasive flow
Softness
Ultrasonic testing
Ultrasonic vibration
Vibration
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Summary:The polishing efficiency of the soft abrasive flow (SAF) method is low, especially for the hard-brittle materials. To resolve this problem, an abrasive flow polishing method using ultrasonic vibration is proposed. The polishing mechanism is first introduced, then the Euler multiphase model is used to build the fluid mechanical model of the proposed method. The turbulence kinetic energy (TKE) and particle dynamic pressure (PDP) at different vibration amplitudes and frequencies are studied. Simulation results show that the boundary vibration can promote the TKE and PDP, and hence, affecting the polishing efficiency and quality. A set of comparative polishing experiments with or without boundary vibration and different vibration amplitudes for K9 glass are then conducted to explore the performance of the proposed method. It can be found that this method can produce highly smooth surface for K9 glass and exhibits higher polishing efficiency as compared to the traditional SAF method. [Display omitted] •Polishing performance was enhanced using ultrasonic vibration.•Turbulence kinetic energy and dynamic pressure were numerically studied.•Particle-wall collision was improved by acoustic wave and cavitation bubbles.•High smooth surface on K9 glasses was attained using this method.
ISSN:0032-5910
1873-328X
DOI:10.1016/j.powtec.2020.12.065