Experimental Study on Dry WEDM Finishing

Abstract

Comparing with conventional WEDM in emulsion, dry finishing of high-speed WEDM (HS-WEDM) has advantages such as higher material removal rate, better surface roughness and straightness. Authors have presented a new procedure as gas-liquid combined multiple cut, in which roughing is processed in dielectric liquid, and semi-finishing is in liquid or gas, while finishing is in gas. For better understanding the effect of machining parameters on surface roughness and cutting speed in dry finishing, a L25(56) Design was implemented. The analysis of variance shows that the effect of pulse duration on surface roughness is of high significance, and peak current is of significance respectively, and the effect of no load worktable feed on cutting speed is high significant.

High-Performance Heat-Insulated Coating Fabric and its Technology for Producing

“…Filler composition and coating thickness. When hollow glass bead poraver of the reflective layer is 4.5%, while rutile-type 2 O T i poraver of the radiant layer is 15%, the light reflective capability and heat radiant capability are in best state [12]. Generally speaking, coating heat-insulated capability strengthens along with the increase of coating thickness at the beginning.…”

Application of Uniform Design in Experiments of WEDM in Gas

“…The analysis of variance shows that the effect of pulse duration on surface roughness is of high significance, and peak current is of significance respectively, and the effect of no load worktable feed on cutting speed is high significant. Two factors as offset and wire length are not significant on R a and V w [8]. In this paper, the other four significant parameters, such as pulse duration, pulse interval ratio, peak current and no load worktable feed, were selected as factors in Uniform Design test.…”