Article: Performance evaluation of Cu-W-Si green P/M composite electrode for surface modification of P20+Ni steel using electrical discharge machine Journal: International Journal of Machining and Machinability of Materials (IJMMM) 2021 Vol.23 No.3 pp.281 - 305 Abstract: The current experimental research is being carried out to investigate the correlation between the process parameter of the electrical discharge machine (EDM) with the composite electrode (Cu-W-Si) produced through the process of powder metallurgy (P/M). The experiments on P20+Ni die steel were planned and performed using the rotatable second-order central composite design (CCD). The mathematical response model was obtained through response surface methodology. MRR, TWR and SR have been studied on the significance of compaction pressure (Cp), peak current (Ip), pulse-on time (Ton) and duty cycle (τ). ANOVA was conducted to investigate the contribution percentage of the parameters. The optimal set of process parameters was obtained using a multi-objective optimisation technique called 'composite desirability'. The predicted results of responses were confirmed with the experimental results. The reasonable agreements between predicted and experimental results of MRR and TWR have been obtained with error lying within 5.19% and −3.33% respectively. Inderscience Publishers - linking academia, business and industry through research

Title: Performance evaluation of Cu-W-Si green P/M composite electrode for surface modification of P20+Ni steel using electrical discharge machine

Authors: J.L. Ramdatti; A.V. Gohil; Vineet Jain; K.G. Dave

Addresses: Department of Production Engineering, Government Engineering College, Bhavnagar, Gujarat, India ' Department of Production Engineering, Shantilal Shah Engineering College, Bhavnagar, Gujarat, India ' Department of Mechanical Engineering, Mewat Engineering College, Nuh, Haryana, India ' Department of Mechanical Engineering, L.D. Engineering College, Ahmedabad, Gujarat, India

Abstract: The current experimental research is being carried out to investigate the correlation between the process parameter of the electrical discharge machine (EDM) with the composite electrode (Cu-W-Si) produced through the process of powder metallurgy (P/M). The experiments on P20+Ni die steel were planned and performed using the rotatable second-order central composite design (CCD). The mathematical response model was obtained through response surface methodology. MRR, TWR and SR have been studied on the significance of compaction pressure (C_p), peak current (I_p), pulse-on time (T_on) and duty cycle (τ). ANOVA was conducted to investigate the contribution percentage of the parameters. The optimal set of process parameters was obtained using a multi-objective optimisation technique called 'composite desirability'. The predicted results of responses were confirmed with the experimental results. The reasonable agreements between predicted and experimental results of MRR and TWR have been obtained with error lying within 5.19% and −3.33% respectively.

Keywords: electrical discharge machine; EDM; P/M composite electrode; response surface methodology; RSM; multi-objective optimisation; material removal rate; MRR; tool wear rate; surface roughness; composite desirability.

DOI: 10.1504/IJMMM.2021.115310

International Journal of Machining and Machinability of Materials, 2021 Vol.23 No.3, pp.281 - 305

Received: 31 Aug 2020
Accepted: 29 Nov 2020
Published online: 27 May 2021 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article

Title: Performance evaluation of Cu-W-Si green P/M composite electrode for surface modification of P20+Ni steel using electrical discharge machine

Keep up-to-date