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Quality Study and Numerical Simulation Analysis of Solid-Liquid Two-Phase Magnetic Fluid Polishing Seven-Order
1Key Laboratory of Vehicle Transmission, China North Vehicle Research Institute, Beijing 100072, China.
Micromachines
|April 23, 2022
Summary
Solid-liquid two-phase magnetic fluid polishing (SLTPMFP) significantly improves variable-diameter pipe surface quality, reducing roughness by an order of magnitude. Higher wall shear stress in SLTPMFP leads to better surface finish, offering precision polishing support.
Area of Science:
- Materials Science
- Manufacturing Engineering
- Fluid Dynamics
Background:
- Variable-diameter pipe parts are crucial in automotive and aerospace industries.
- Enhancing surface quality is essential for performance and reliability.
- Solid-liquid two-phase magnetic fluid (SLTPMF) presents a novel polishing medium.
Purpose of the Study:
- To investigate the effectiveness of SLTPMF polishing for variable-diameter pipes.
- To explore the relationship between SLTPMF properties and surface roughness improvement.
- To provide technical and theoretical support for SLTPMF precision polishing.
Main Methods:
- Experimental research on seven-order variable-diameter pipes.
- Numerical simulation of SLTPMF behavior.
- Surface roughness measurement (Ra).
- Analysis of wall shear stress, velocity, and dynamic pressure.
Main Results:
- Achieved a surface roughness reduction by an order of magnitude to Ra 0.054 μm.
- Demonstrated the reliability and superiority of SLTPMF polishing.
- Correlated improved roughness with higher wall shear stress.
- Observed specific velocity and dynamic pressure patterns within the fluid.
Conclusions:
- SLTPMF polishing is a highly effective method for improving variable-diameter pipe surface roughness.
- Wall shear stress is a key factor influencing polishing performance.
- Understanding fluid dynamics is critical for optimizing SLTPMF precision polishing processes.
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