Advances in Manufacturing ›› 2025, Vol. 13 ›› Issue (1): 245-263.doi: 10.1007/s40436-024-00533-w

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Mechanism and machinability in novel electroplastic-assisted grinding ductile iron

Jia-Hao Liu1, Dong-Zhou Jia1,2, Chang-He Li2, Yan-Bin Zhang2, Ying Fu3, Zhen-Lin Lv4, Shuo Feng1   

  1. 1. College of Mechanical Engineering and Automation, Liaoning University of Technology, Jinzhou 121001, Liaoning, People's Republic of China;
    2. School of Mechanical & Automotive Engineering, Qingdao University of Technology, Qingdao 266520, Shandong, People's Republic of China;
    3. Songshan Lake Material Laboratory, Dongguan, 523808 Guangdong, People's Republic of China;
    4. School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, People's Republic of China
  • Received:2024-03-15 Revised:2024-04-07 Published:2025-02-26
  • Contact: Dong-Zhou JIA,E-mail:jia_dongzhou@163.com E-mail:jia_dongzhou@163.com
  • Supported by:
    This study was financially supported by the China Postdoctoral Science Foundation Funded Project (Grant No. 2023M732826), the Liaoning Provincial Science and Technology Program Project (Grant No. 2023JH1/10400074), and the Special Fund of Taishan Scholars Project (Grant No. tsqn202211179).

Abstract: Owing to the hard brittle phase organization in their matrixes, brittle materials are prone to the formation of pits and cracks on machined surfaces under extreme grinding conditions, which severely affect the overall performance and service behavior of machined parts. Based on the electroplastic effect of pulsed currents during material deformation, this study investigates electroplastic-assisted grinding with different electrical parameters (current, frequency, and duty cycle). The results demonstrate that compared to conventional grinding, the pulsed current can significantly decrease the surface roughness (Sa) of the workpiece and reduce surface pits and crack defects. The higher the pulsed current, the more pronounced the improvement in the surface quality of the workpiece. Compared to traditional grinding, when the pulsed current is 1 000 A, Sa decreases by 46.4%, and surface pit and crack defects are eliminated. Under the same pulse-current amplitude and frequency conditions, the surface quality continues to improve as the duty cycle increases. When the duty cycle is 75%, Sa reaches a minimum of 0.749 μm. However, the surface quality is insensitive to the pulsed-current frequency. By investigating the influence of pulsed electrical parameters on the surface quality of brittle material under grinding conditions, this study provides a theoretical basis and technical support for improving the machining quality of hard, brittle materials.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-024-00533-w

Key words: Electroplasticity, Grinding machining, Brittle material, Pulse parameters, Surface quality