The Influence of Electrical Parameters on the Penetration of Tungsten into the SKD61 Workpiece Surface in PMEDM using Tungsten Carbide Powder
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Abstract
In the study, the authors studied the effect of the electrical current ($I_{p}$); the time-on discharge ($T_{on}$) on the penetration of tungsten into the surface of SKD61 steel at different concentrations of tungsten carbide powder used in powder mixed electrical discharge machining. The research has shown that the electrical current and the time-on discharge can impact greatly on the penetration of tungsten and the carbidation of the steel surface. In the mode of low electrical discharge, the penetration of tungsten into the surface and the carbidation of the surface is better than that of the mode of high electrical discharge.
Keywords
EDM, PMEDM, Surface modification, Tungsten carbide powder
Article Details
References
[1] K. Furutani, A. Saneto, H. Takezawa, N. Mohri. H. Miyake, Accertation of titanium carbide by electrical discharge machining with powder suspended in working fluid, Prec. Eng. 25 (2001) 138-144.
[2] W.S. Zhao, Q.G. Meng, Z.L. Wang. The application of research on powder mixed EDM in rough machining. J. Mater. Process. Technol.129 (2002) 30-33.
[3] A. Erden, S. Bilgin, Role of impurities in electric discharge machining.in: Proceedings of 21st International Machine Tool Design and Research Conference, Macmillan, London, 1980, pp. 345-350.
[4] C.H. Wang, Y.C. Lin, B.H. Yan, F.Y. Huang, Effect of characteristics of added powder on electric discharge machining, J. Jpn. Inst. Light Met. 42 (12) (2001) 2597-2604.
[5] N. Mohri, N. Saito, M.A. Higashi, A new process of finish machining onfree surface by EDM methods, Annals CIRP 40 (1) (1991) 207-210.
[6] N. Mohri, J. Tsukamoto, M. Fujino, Mirror-like finishing by EDM, in: Proceedings of the 25th International Symposium on Machine Tool Designand Research, UK, 1985, pp. 329-336.
[7] N. Mohri. J. Tsukamoto, M. Fujino, Surface modification by EDM-an innovation in EDM with semi-conductive electrodes, in: Proceedings of Winter Annual Meet ASME, vol. 34, 1988, pp. 21-30.
[8] Y. Uno, A. Okada, Y. Hayashi, Y. Tabuchi, Surface integrity in EDM of aluminum bronze with nickel powder mixed fluid, J. Jpn. Soc. Elec. Mach. Eng. 32 (70) (1998) 24-31 (in Japanese).
[2] W.S. Zhao, Q.G. Meng, Z.L. Wang. The application of research on powder mixed EDM in rough machining. J. Mater. Process. Technol.129 (2002) 30-33.
[3] A. Erden, S. Bilgin, Role of impurities in electric discharge machining.in: Proceedings of 21st International Machine Tool Design and Research Conference, Macmillan, London, 1980, pp. 345-350.
[4] C.H. Wang, Y.C. Lin, B.H. Yan, F.Y. Huang, Effect of characteristics of added powder on electric discharge machining, J. Jpn. Inst. Light Met. 42 (12) (2001) 2597-2604.
[5] N. Mohri, N. Saito, M.A. Higashi, A new process of finish machining onfree surface by EDM methods, Annals CIRP 40 (1) (1991) 207-210.
[6] N. Mohri, J. Tsukamoto, M. Fujino, Mirror-like finishing by EDM, in: Proceedings of the 25th International Symposium on Machine Tool Designand Research, UK, 1985, pp. 329-336.
[7] N. Mohri. J. Tsukamoto, M. Fujino, Surface modification by EDM-an innovation in EDM with semi-conductive electrodes, in: Proceedings of Winter Annual Meet ASME, vol. 34, 1988, pp. 21-30.
[8] Y. Uno, A. Okada, Y. Hayashi, Y. Tabuchi, Surface integrity in EDM of aluminum bronze with nickel powder mixed fluid, J. Jpn. Soc. Elec. Mach. Eng. 32 (70) (1998) 24-31 (in Japanese).