... high, it does not waste much time. In the meantime, it could achieve good surface roughness. . ADVNTAGE OF MIDDLE SPEED CNC WIRE CUTTING MACHINE ... cutting Machine. In additions, the efficiency can impoved 2-3 times for the workpiece with higher surface roughness. lin the process, the control ... (of the high-frequency pulse width, pulse, power control and the number of wire walking speed), and , ...