Analysis and modeling of surface characteristics in electrophoretic deposition–assisted internal polishing of AISI 304 steel

  • Nikhil V. KhatekarEmail author
  • Raju S. Pawade


This article reports inner surface characteristics of AISI 304 steel pipe by electrophoretic deposition–assisted polishing (EPDAP). Electrophoretic deposition is based on the principle of electrophoresis in combination with deposition of abrasives on tool electrode. The screening experiments were planned using one factor at a time approach and main experiments were conducted using Taguchi L9 orthogonal array design. The process parameters selected were grit size, polishing time, and polishing tool rotational speed. The response variables selected were percentage reduction in surface roughness (PRSR-Ra) and percentage increase in reflectivity (PIRL). The optimum polishing performance for PRSR-Ra obtained is 87.93% at abrasive grit size of 3000, polishing time of 30 min, and polishing tool rotational speed of 200 rpm. The optimum reflectivity performance for the PIRL obtained is 69.07% at abrasive grit size of 3000, polishing time of 30 min, and polishing tool rotational speed of 300 rpm. The surface roughness (Ra) achieved is 0.035 μm (35 nm).


AISI 304 steel Electrophoretic deposition PRSR PIRL 



Maximum diameter of the abrasive grain, mm


Diameter of indentation, mm


Rotational speed of the polishing tool, rpm


Polishing time, min


Hardness of the workpiece material, N/mm2 (160 BHN)


Normal indentation force, N


Shear force or viscous resistance, N


Centrifugal force on the abrasive particle, N


Mass of the abrasive slurry accumulating the workpiece fixture, kg


Density of the abrasive slurry, kg/m3


Radius of the tool shaft, m


Diameter of the tool shaft, m


Length of the tool shaft, mm


Angular velocity of the tool, rad/s


Length of the workpiece, mm


Shear or tangential stress in the abrasive slurry, N/mm2


Radial clearance between the tool shaft and the workpiece surface, mm


Depth of indentation of abrasive particles into the workpiece surface, mm


Torque required by the polishing tool shaft to overcome viscous resistance


Constant of proportionality accounting for various factors which contribute to surface roughness



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

Authors and Affiliations

  1. 1.Mechanical Engineering DepartmentDr. Babasaheb Ambedkar Technological UniversityLonereIndia

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