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<p>Magnetic abrasive finishing technology can effectively process the surface of the workpiece. In this study, a planar magnetic abrasive finishing device based on the compound magnetic field of pulse electromagnet and alternating permanent magnet was designed, for the purpose of enhancing the magnetic field variation in processing area, promoting the renewal of magnetic abrasive particles in the finishing area. To prevent the permanent magnetic field abrasive only a single location to participate in the processing problem and improving the surface&#xa0;quality of grinding process. Simulations on compound magnetic field were carried out to analyze the distribution of magnetic field in different operational states. Experiments on magnetic abrasive finishing, microscopic morphology observation and roughness detection were conducted to study the effects of pulse voltage amplitude, alternating frequency of compound magnetic field, and grinding time on the surface quality of SUS304 stainless steel workpiece. What’s more, the optimized process parameters by response surface methodology were pulse voltage amplitude of 27&#xa0;V, alternating frequency of compound magnetic field of 5&#xa0;Hz, and a grinding time of 40&#xa0;min. Surface roughness reduced to Ra 0.027&#xa0;μm from original Ra 0.312&#xa0;μm under the optimal process parameters, and the absolute error witch predicted value 0.025&#xa0;μm is 8%, which indicates that response surface model exhibits good adaptability. Compound magnetic field of pulse electromagnet and alternating permanent magnet can make the magnetic abrasive particles maintain efficient grinding performance, effectively reduce the surface roughness and improve the surface quality of workpiece.</p>

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Magnetic Abrasive Finishing Process Based on Compound Magnetic Field of Pulse Electromagnet and Alternating Permanent Magnet

  • 期刊论文

  • 发表日期：

    2025年3月9日

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  • Yunlong Ding,
  • Bingyang Liu,
  • Yuhang Yan,
  • Huijiang Wang,
  • Bing Han,
  • Yan Chen

摘要

Magnetic abrasive finishing technology can effectively process the surface of the workpiece. In this study, a planar magnetic abrasive finishing device based on the compound magnetic field of pulse electromagnet and alternating permanent magnet was designed, for the purpose of enhancing the magnetic field variation in processing area, promoting the renewal of magnetic abrasive particles in the finishing area. To prevent the permanent magnetic field abrasive only a single location to participate in the processing problem and improving the surface quality of grinding process. Simulations on compound magnetic field were carried out to analyze the distribution of magnetic field in different operational states. Experiments on magnetic abrasive finishing, microscopic morphology observation and roughness detection were conducted to study the effects of pulse voltage amplitude, alternating frequency of compound magnetic field, and grinding time on the surface quality of SUS304 stainless steel workpiece. What’s more, the optimized process parameters by response surface methodology were pulse voltage amplitude of 27 V, alternating frequency of compound magnetic field of 5 Hz, and a grinding time of 40 min. Surface roughness reduced to Ra 0.027 μm from original Ra 0.312 μm under the optimal process parameters, and the absolute error witch predicted value 0.025 μm is 8%, which indicates that response surface model exhibits good adaptability. Compound magnetic field of pulse electromagnet and alternating permanent magnet can make the magnetic abrasive particles maintain efficient grinding performance, effectively reduce the surface roughness and improve the surface quality of workpiece.