Wire electrical discharging machining is a non-traditional, thermoelectric process in which workpiece material is eroded by a series of discrete sparks between the workpiece and a tool electrode immersed in a liquid dielectric medium and has been used...
Wire electrical discharging machining is a non-traditional, thermoelectric process in which workpiece material is eroded by a series of discrete sparks between the workpiece and a tool electrode immersed in a liquid dielectric medium and has been used widely in production, aerospace, medical and virtually all areas of conductive material machining. But the heat-affect layer is produced by the heat under machining.
In this study, the variation of surface roughness, hardness and residual stress along the Co-containing amount of tungsten carbide in the same machining condition and along the machining energy in the same Co-containing amount of tungsten carbide are presented experimentally. These are compared to the SEM.
In conclusion, the more Co-containing amount, the more surface roughness increases, the hardness decreases and the residual stress is not affected. As a machining energy increases, a Co-omittance increases.