Theoretical and Experimental Investigation on a Novel Cavitation-Assisted Abrasive Flow Polishing Method

Area of Science:

• Materials Science and Engineering
• Fluid Dynamics
• Surface Finishing Technologies

Background:

• Traditional abrasive flow polishing methods face limitations in achieving high material removal rates.
• Cavitation, the formation and collapse of bubbles, can generate localized high-energy micro-jets.
• Optimizing fluid dynamics and bubble behavior is crucial for enhancing abrasive particle motion.

Purpose of the Study:

• To develop and investigate a novel material polishing method utilizing cavitation-induced micro-jets.
• To optimize the Venturi tube geometry for efficient cavitation generation and abrasive particle acceleration.
• To determine process parameters for maximizing material removal efficiency on flat workpieces.

Main Methods:

• Numerical simulations were employed to optimize the Venturi tube design for cavitation.
• Experimental investigation of process parameters to achieve an optimal cavitation ratio.
• Comparative analysis of the novel method against traditional abrasive flow polishing.

Main Results:

• The optimized Venturi structure effectively generated cavitation bubbles and micro-jets.
• Process parameters were identified for maximizing the polishing efficiency.
• An approximate 60% enhancement in processing efficiency was achieved compared to traditional methods.

Conclusions:

• The proposed polishing method, leveraging cavitation bubbles within a specialized Venturi tube, significantly increases material removal rates.
• This cavitation-enhanced abrasive flow polishing offers a promising, highly efficient alternative for surface finishing applications.
• The integration of numerical simulation and experimental analysis facilitated the optimization of this novel polishing technique.