Surface roughing method and device of wire cable

The invention provides a surface roughing method and device of a wire cable. The surface roughing device comprises an air pressure-limitation device, an air cooling device and an air blowing device, wherein the air blowing device comprises an air blowing device main body and a convex nozzle die, wherein the air pressure-limitation device is used for receiving a high-pressure gas, stabilizing the pressure of the high-pressure gas and transmitting the gas to the air cooling device via an air pipe, the air cooling device is used for controlling the received high-pressure gas to generate eddy, separating a cold gas and a hot gas and transmitting the cold gas to the air blowing device main body via the air pipe, and the air blowing device main body is used for transmitting the cold gas to a groove adaptive to a convex nozzle die structure and uniformly dispersing the cold gas on a surface of the wire cable by a funnel-shaped structure arranged at the convex nozzle die. The surface roughingdevice has the beneficial