Influence of oxide layer on grinding quality in ELID grinding bearing outer ring raceway with workpiece-cathode

  • Zhiqiang Wang
  • Chengzu RenEmail author
  • Guang Chen
  • Xiaofan Deng
  • Chunhui Ji


Surface quality of workpiece could be significantly improved by ELID grinding. However, ELID grinding bearing outer ring raceway with small inner diameter has small space, which limits installation of electrode. In this work, ELID grinding bearing outer ring raceway acting as cathode is proposed. But electric spark discharge will occur in ELID grinding with workpiece-cathode, which affects grinding quality. The purpose of this work is to investigate formation mechanism of electric spark discharge and influence of oxide layer on grinding quality. A novel experimental method is proposed to study state of oxide layer (mainly thickness and compactness) in ELID grinding bearing outer ring raceway with workpiece-cathode. Experimental results show that electric spark discharge occurs with thick oxide layer (characterized by control current), resulting in corroded pits on surface of oxide layer and workpiece in ELID grinding with workpiece-cathode. With increased control current, surface of oxide layer becomes smooth. Moreover, grinding force increases with increased control current. When control current is 0.5 A, surface roughness of workpiece is the largest. And surface roughness of workpiece increases with increased control current, as control current is greater than or equal to 1 A. The results are helpful to apply ELID to grind bearing outer ring raceway and improve ELID grinding performance.


Bearing outer ring raceway ELID Workpiece-cathode State of oxide layer Electric spark discharge 



Voltage of power supply


Resistance of protective resistance


Resistance of matrix of wheel


Resistance of oxide layer


Resistance of workpiece




Resistance of material


Electric field intensity


Scalar potential


Resistivity of material


Length of material


Sectional area of material


Resistivity of oxide layer


Thickness of oxide layer


Sectional area of oxide layer


Gap between anode and cathode


Density of the charge body


Dielectric constant of medium



The authors would like to acknowledge to the National Natural Science Foundation of China (Contract no. 51675377) and Tianjin application foundation and advanced technology research project (Contract No.15JCZDJC39500 & No.18JCZDJC10050) for providing the financial support to complete this work.


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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  • Zhiqiang Wang
    • 1
    • 2
  • Chengzu Ren
    • 1
    Email author
  • Guang Chen
    • 1
  • Xiaofan Deng
    • 1
  • Chunhui Ji
    • 1
  1. 1.Key Laboratory of Mechanism Theory and Equipment Design of Ministry of EducationTianjin UniversityTianjinChina
  2. 2.Tianjin Key Laboratory of High Speed Cutting and Precision MachiningTianjin University of Technology and EducationTianjinChina

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