You are here

Home » Content

Investigation on the effect of copper tool’s grain refinement on surface finish in EDM processing

Journal Name:

  • Cumhuriyet Üniversitesi Fen Fakültesi Fen Bilimleri Dergisi

Publication Year:

  • 2015

Key Words:

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
Electrical discharge machining is a modern machining method. With the ever-increasing industrial developments, much research is conducted to improve the output parameters of this process. Meanwhile, previous studies have considered changing the structure and properties of the machining tool materials through different methods as an approach to improve such parameters. The extrusion process or the equal channel angular pressing is a new and efficient method for the production of fine-grained high-strength materials with desirable mechanical and physical properties which can also be used as a new method to improve machining conditions. This study investigated the effect of extruding the electrical discharge machining tool through this method on the output parameter of workpiece surface finish. The machining tool was made of pure copper, and the extrusion process was performed in four and eight stages. Grain size was determined using EBSD. Tool conditions, spark current, and pulse on-time were considered as variable parameters, each of which was changed in three levels. Test results showed that extruding the copper tools reduced the workpiece surface finish quality by 14.1%.
Bookmark/Search this post with
FULL TEXT (PDF): 
PDF icon 5000139390-5000241467-1-pb.pdf
  • 6
1102
1110
  • English

REFERENCES

References: 

[1] Y. Zhang, Y. Liu, Y. Shen, R. Ji, Z. Li, C. Zheng, Investigation on the influence of the
dielectrics on the material removal characteristics of EDM, Journal of Materials Processing
Technology, Vol. 214, Issue 5, pp. 1052-1061, 2014.
[2] B. Ndaliman, M., A. Khan, A., Y. Ali, M., A. M. Hambiyah, M., "Modeling the surface
roughness behavior of an EDMed workpiece with different tool electrodes using DOE",
IOP Conferences Series: Materials Science and Engineering, Vol. 53, Issue 1, 2013.
[3] M. K. Das, K. Kumar, T. K. Barman, P. Sahoo, Optimization of surface roughness and
MRR in EDM using WPCA, Procedia Engineering, Vol. 64, pp. 446-455, 2013.
[4] T. Vijayashakthivel, T. N. S. Dath, R. Krishnamurthy, Response of copper to equal channel
angular pressing with different processing temperature, Procedia Engineering, Vol. 97, pp.
56-63, 2014.
[5] K. O. Sanusi, O. D. Makinde, G. J. Oliver, Equal channel angular pressing technique for
the formation of ultra-fine grained structures, South African Journal of Science, Vol. 108,
No. 9-10, 2012.
[6] E. Zeynali, H. Bisadi, Comparing plastic deformations produced by HPT and ECAP
processes using the finite element analysis method, International Journal of Mechanics and
Applications, Vol. 2(1), pp. 20-24, 2012.
[7] K. O. Sanusi, G. J. Oliver, Effects of grain size on mechanical properties of nanostructured
copper alloy by severe plastic deformation (SPD) process, Journal of Engineering/Design
and Technology, Vol. 7, No. 3, pp. 335-341, 2009.
[8] Sh. R. Bahadori, K. Dehghani, F. Bakhshandeh, Microstructure, texture and mechanical
properties of pure copper processed by ECAP and subsequent cold rolling, Materials
Science & Engineering A, Vol. 583, pp. 36-42, 2013.
[9] B. Tolaminejad, K. Dehghani, Microstructural characterization and mechanical properties
of nanostructured AA1070 aluminum after equal channel angular extrusion, Materials and
Design, Vol. 34, PP. 285-292, 2012.
[10] M. Greger, J. Valicek, P. Hlavacek, Microstructure and hardness of copper after pressing
by ECAP, in 13th International Research/Expert Conference, Trends in the Development
of Machinery and Associated Technology, Hammamet, Tunisia, pp. 749-752, 2009.
[11] F. A. Matoofi, Copper Heat Treatment And Its Alloy Standards, Tehran: Fadak Isatis,
2006.(In Persian)
[12] Keskin, Y., S. Halkaci, H., Kizil, M., "An experiment study for determination of the effects
of machining parameters on surface roughness in electrical discharge machining", The
International Journal of Advanced Manufacturing Technology, Vol. 28, Issue 11-12, pp.
1118-1121, 2006.
[13] k. Das, M., Kumar, K., k. Barman, T., Sahoo, P., "Optimization of surface roughness and
MRR in EDM using WPCA", Procedia Engineering, Vol. 64, pp. 446-455, 2013.
[14] F. Al-Mufadi, F. Djavanroodi, Effect of equal channel angular pressing process on impact
property of pure copper, International Journal of Chemical/Nuclear/Materials and
Metallurgical Engineering, Vol. 8, No. 1, 2014.

Thank you for copying data from http://www.arastirmax.com