Double-wire additive gun body based on cold cathode electron beam optical internal fuse additive

The invention relates to a double-wire additive gun body based on cold cathode electron beam optical internal fuse additive. Comprising an anode, an insulator, an inner cathode, an outer cathode, an annular wire nozzle, a discharge cavity, an upper plywood, a wire guide tube, a pipeline for cooling the cathodes and a high-voltage power supply, an insulator is arranged in the anode, an inner cathode is arranged in the middle of the lower end of the insulator, and an outer cathode is integrally annular and connected with the lower portion of the insulator. A through hole, a water cooling channel, an air supply channel and a high-voltage power supply channel are arranged in the insulator, the two wire guide pipes penetrate through the through hole, the water cooling channel, the air supply channel and the high-voltage power supply channel, and the annular wire nozzle arranged at the lower end of the insulator is in a conical tube shape with the wide upper portion and the narrow lower portion. A wire feeding dual