Impact Assessment of Input Factors on Tool Electrode Wear in Die Sinking EDM of Steel EN43CrMo4

Abstract:

The paper deals with the wear of tool electrodes for Die Sinking EDM. In the experiment were used the electrodes of copper and graphite. The workpiece material was steel EN43CrMo4. For the assessment the effects of each parameter was used the statistical method Design of Experiments (DOE). Assessed input factors were the peak current, pulse on-time, pulse off-time, and the electrode material. The result of the effects of each input factors was tool electrode wear. For calculating the relative wear of electrodes was used the percentage of the ratio of the electrode and the workpiece weight. The results show that the expression of the relative wear in practice can be described as a method unusable due to the absorption of the graphite electrode used in the experiment.

• Periodical: Key Engineering Materials (Volume 756)
• Pages: 127-135
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.756.127
• Online since: September 2017
• Authors: Slavomíra Hašová*, Ľuboslav Straka, František Špalek
• Keywords: Design of Experiments, Electrical Discharge Machining (EDM), Tool Electrode, Tool Wear

References

[1] I. Maňková, Progressive technologies I, Košice, Vienala, 2000, pp.144-147.

[2] Ľ. Straka, S. Hašová, Wear of copper and graphite tool electrodes in the die-sinking, in: ISCAME 2015. Debrecen, University of Debrecen, 2015, pp.196-201.

[3] Ľ. Straka, S. Hašová, Study of tool electrode wear in EDM process, Key Engineering Materials 669 (2016) 302-310.

DOI: 10.4028/www.scientific.net/kem.669.302

[4] T. Krenický, P. Jacko, Real-time monitoring of technical systems operation (Real-time monitoring prevádzky technických systémov), Strojárstvo Extra 5 (2011) 32/1-32/2. (in Slovak).

[5] Information on http: /www. penta-edm. sk/produkty/penta/?produkt=penta-433-m. [cit. 02. 03. 2017].

[6] Information on http: /scaleman. com/mettler-toledo-pl303-digital-milligram-electronic-balance. html [cit. 14. 02. 2017].

[7] Information on http: /jkz. jb-webshare. com/cs/printpdf/produkty/ocel-k-zuslechtovani-15-142 [cit. 12. 02. 2017].

[8] Information on http: /www. rdisro. cz/edm/grafit-pro-edm-elektrody. html [cit. 10. 02. 2017].

[9] Information on http: /www. elero. sk/produkty [cit. 12. 02. 2017].

[10] T. Krenický, Automated non-contact system for characterization of surface geometry (Automatizovaný bezkontaktný systém pre charakterizáciu geometrie povrchov), in: Proc. of Workshop ARTEP 2012, 22-24 February 2012, Stará Lesná, Slovakia; Košice: TUKE, 2012, pp.38-5.

[11] Ľ. Straka, S. Hašová. Assessing the influence of technological parameters on the surface quality of steel MS1 after WEDM, MM Science Journal, Vol. 2016 (2016) 1194-1200.

DOI: 10.17973/mmsj.2016_11_201629