Study on Finishing Cut with Dry WEDM
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.
Chengyu Jiang, Geng Liu, Dinghua Zhang and Xipeng Xu
T. Wang et al., "Study on Finishing Cut with Dry WEDM", Materials Science Forum, Vols. 532-533, pp. 273-276, 2006