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<p>With the increasing demand for high-precision manufacturing technologies in the micro-mold industry, ultrasonic-assisted magnetic abrasive finishing, which combines an ultrasonic vibration effect and magnetic force, is an effective way to achieve superior surface quality and accuracy for hardened surfaces. This study investigated the effects of four process parameters on surface roughness of SKD11. Based on Taguchi’s orthogonal design and ANOVA analysis, ultrasonic amplitude exhibited the most significant effect, accounting for approximately 89 % of the surface improvement, followed by rotational speed and magnetic flux density, while feed rate was not statistically significant. Verification experiments demonstrated that surface roughness was improved by 64 %, from 0.300 µm to 0.108 µm, under the optimal condition of 60 mT, 35 µm, 800 rpm, and 20 mm/min. These findings showed that the suggested finishing process provides a highly effective and reliable approach for precision surface finishing of hard-to-machine materials.</p>

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Evaluation of surface improvement of rotary ultrasonic-assisted MAF of hardened SKD11

  • 期刊论文

  • 发表日期：

    2026年2月9日

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  • Junghee Lee,
  • Jaeseob Kwak

摘要

With the increasing demand for high-precision manufacturing technologies in the micro-mold industry, ultrasonic-assisted magnetic abrasive finishing, which combines an ultrasonic vibration effect and magnetic force, is an effective way to achieve superior surface quality and accuracy for hardened surfaces. This study investigated the effects of four process parameters on surface roughness of SKD11. Based on Taguchi’s orthogonal design and ANOVA analysis, ultrasonic amplitude exhibited the most significant effect, accounting for approximately 89 % of the surface improvement, followed by rotational speed and magnetic flux density, while feed rate was not statistically significant. Verification experiments demonstrated that surface roughness was improved by 64 %, from 0.300 µm to 0.108 µm, under the optimal condition of 60 mT, 35 µm, 800 rpm, and 20 mm/min. These findings showed that the suggested finishing process provides a highly effective and reliable approach for precision surface finishing of hard-to-machine materials.