Study on Finishing Cut with Dry WEDM

Abstract:

Utilizing gas as the dielectric instead of dielectric liquid has enabled the development of dry wire electrical discharge machining (WEDM) technology for finishing cut. This paper studies on the surface quality of tool steel with WEDM method, which is conducted in gas to improve the accuracy of finishing cut, and compares the surface quality in atmosphere and in water. Experiment results showed that Low-Speed WEDM in atmosphere offers advantages such as better straightness, lower surface roughness and shorter gap length, but WEDM in atmosphere has poorer material removal rate than conventional WEDM in water. It was also found the removal rate in atmosphere can be improved by increasing the wire winding speed.

• Periodical: Materials Science Forum (Volumes 532-533)
• Pages: 273-276
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.532-533.273
• Online since: December 2006
• Authors: Tong Wang, Xin Fu Zhang, Xue Fang Zhao
• Keywords: Dry WEDM, Finishing Cut, Straightness

References

[1] C. Furudate and M. Kunieda: Proc. of 2nd Int. Conf. on MMSS'2000, p.325.

[2] T. Wang and M. Kunieda: Proc. ISEM13, (2001), p.505.

[3] T. Wang and M. Kunieda: International Journal of Electrical Machining, (2002) No. 7, p.3. 0.

05.

1.

15.

2.

25.

3 Removal rate Vw/mm 3• min -1 Atmosphere Water.

5 1. 0 1. 5 Pulse duration ti/µs Fig. 8 Comparison of removal rate in water and atmosphere.