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<p>A new Magnetic Abrasive Finishing (MAF) process employing a multipole magnetic field is proposed to enhance the surface quality of SUS304 stainless steel after machining. This study introduces an innovative magnetic finishing solution utilizing shear thickening fluids (STFs) to overcome the limitations of conventional MAF, particularly the non-uniform distribution and weak bonding of abrasive particles within the finishing medium. The fundamental mechanisms governing material removal, abrasive particle dynamics, and the interaction between the magnetic field and the workpiece surface are systematically analyzed. Additionally, the characteristics of the multipole magnetic field including its intensity, spatial distribution, and effects on finishing performance are comprehensively investigated. To validate the feasibility and effectiveness of the proposed method, an experimental system was designed, and a series of controlled trials were conducted. The influence of key process parameters, including STF concentration, working gap, eccentricity, and rotational speeds of the magnetic disc and yoke, on surface finishing quality was examined. Experimental results demonstrate a significant enhancement in surface smoothness, achieving a nanometer-level roughness (Ra = 10.153&#xa0;nm), thereby confirming the potential of this approach for precision finishing applications.</p>

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A new magnetic abrasive finishing using a permanent multi-magnetic yoke for surface finishing of SUS304 material

  • 期刊论文

  • 发表日期：

    2025年6月9日

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  • Nguyen Minh Quang,
  • Nguyen Nhat Tan,
  • Nguyen Tien Tung

摘要

A new Magnetic Abrasive Finishing (MAF) process employing a multipole magnetic field is proposed to enhance the surface quality of SUS304 stainless steel after machining. This study introduces an innovative magnetic finishing solution utilizing shear thickening fluids (STFs) to overcome the limitations of conventional MAF, particularly the non-uniform distribution and weak bonding of abrasive particles within the finishing medium. The fundamental mechanisms governing material removal, abrasive particle dynamics, and the interaction between the magnetic field and the workpiece surface are systematically analyzed. Additionally, the characteristics of the multipole magnetic field including its intensity, spatial distribution, and effects on finishing performance are comprehensively investigated. To validate the feasibility and effectiveness of the proposed method, an experimental system was designed, and a series of controlled trials were conducted. The influence of key process parameters, including STF concentration, working gap, eccentricity, and rotational speeds of the magnetic disc and yoke, on surface finishing quality was examined. Experimental results demonstrate a significant enhancement in surface smoothness, achieving a nanometer-level roughness (Ra = 10.153 nm), thereby confirming the potential of this approach for precision finishing applications.