Electrode wire for electrical discharge wire-cutting machining and preparation method electrode wire

The invention provides an electrode wire for electrical discharge wire-cutting machining and a preparation method of the electrode wire. The electrode wire comprises a brass wire core and a coating layer coating the wire core, wherein three-dimensional dendritic cracks exist in the coating layer, part of the three-dimensional dendritic cracks extend to the surface of the electrode wire so that discontinuous V-shaped or/and herringbone cracks can be formed on the surface of the electrode wire, and the tips of the cracks point to the stretching direction in the machining process of the electrodewire. The invention further provides a preparation method of the electrode wire for electrical discharge wire-cutting machining. According to the electrode wire for electrical discharge wire-cuttingmachining and the preparation method of the electrode wire, the discontinuous V-shaped or/and herringbone cracks are formed on the surface of the electrode wire, so that the discharge abrasion of a conductive block in a slow w