Title: Studies on surface quality of stainless steel implant material while machining with WEDM process

Authors: S. Sivakumar; M. Adam Khan; B. Muralidharan

Addresses: Department of Mechanical Engineering and Centre for Surface Engineering, School of Automotive and Mechanical Engineering (SAME), Kalasalingam Academy of Research & Education, Virudhunagar Dist., Tamilnadu, India ' Department of Mechanical Engineering and Centre for Surface Engineering, School of Automotive and Mechanical Engineering (SAME), Kalasalingam Academy of Research & Education, Virudhunagar Dist., Tamilnadu, India ' Department of Manufacturing Engineering, School of Mechanical Engineering, Vellore Institute of Technology, Vellore, Tamilnadu, India

Abstract: In this research work machinability studies on stainless steel (SS-107.12) implant by wire electrical discharge machining (WEDM) process was studied. The effect of heat affected zone (HAZ), mechanical load experienced and chemical effects after implantation are the significant factors influencing the degradation of machined surface. The metallurgical behaviour of the machined implant is investigated in detail. The experiments are conducted based on design of experiments by considering the input factors like pulse on time, pulse off time and voltage. The influencing responses measured are material removal rate and surface roughness. Further, the machined samples are subjected to metallurgical characterisation, using scanning electron microscope (SEM), spectroscopic (EDS) analysis and atomic force microscope (AFM). From the results it is observed that, increase in voltage has produced better surface finish and reduced the material removal rate (MRR).

Keywords: implant; steel; wire electrical discharge machining; WEDM; scanning electron microscope; SEM image; spectroscopic; EDS; material removal rate; MRR; surface roughness; Ra.

DOI: 10.1504/IJMMM.2020.109845

International Journal of Machining and Machinability of Materials, 2020 Vol.22 No.5, pp.374 - 385

Received: 12 Jun 2019
Accepted: 09 Oct 2019
Published online: 28 Sep 2020 *

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