Open AccessExperimental model on the wire wear for WEDM of hard to machine materials
Author(s) -
D. Poroś,
S. Zaborski,
M. Wiśniewska
Publication year - 2019
Publication title -
journal of machine engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.588
H-Index - 7
eISSN - 2391-8071
pISSN - 1895-7595
DOI - 10.5604/01.3001.0013.6234
Subject(s) - brass , electrical discharge machining , materials science , machining , metallurgy , wire drawing , electrode , die (integrated circuit) , thermal conductivity , titanium alloy , composite material , thermal expansion , alloy , copper , chemistry , nanotechnology
In this study, the wear of wire electrodes was investigated experimentally in wire electrical discharge machining. Naked brass wire, 0.25mm diameter, zinc oxide coated brass wire and brass CuZn20 coated with brass CuZn50 wire were applied in the conducted research. The wire wear ratio of WEDM of titanium alloy Ti6Al4V and cemented carbide B40 was described. As important WEDM parameters, the following variables were chosen: discharge time ton, average working voltage U. The following properties of machined materials, such as: melting point Tt, electrical conductivity σ, thermal conductivity K, thermal expansion coefficient k, density ρ, heat capacity cp, were also selected to develop the semi – empirical model of the wear of wire electrodes. The variation of the wire wear with cutting different materials by applying three different wire electrodes and process parameters was modelled semi – empirically by employing dimensional analysis.