Wire cutting electrode and wire cutting device using the same

An electrical discharge wire cutting device comprising:

• a workpiece;
• a wire cutting electrode;
• and
• a pulse power comprising a first electrode electrically connects with the wire cutting electrode, and a second electrode electrically connects with the workpiece,
• wherein the wire cutting electrode comprises a carbon nanotube composite wire, a carbon nanotube composite wire tensile strain rate is less than or equal to 3%;
• and the carbon nanotube composite wire comprises a carbon nanotube wire and a metal layer coated on an outer surface of the carbon nanotube wire, the carbon nanotube wire comprises a plurality of carbon nanotubes spirally arranged along an axial direction of the carbon nanotube wire, a carbon nanotube wire twist ranges from about 10 r/cm to about 300 r/cm, and a carbon nanotube wire diameter ranges from about 1 micron to about 30 microns;
• and a metal layer thickness ranges from about 1 micron to about 5 microns.