Surface deposition method based on double-tungsten-electrode coordinated control oscillating arc

The invention discloses a surface deposition method based on a double-tungsten-electrode coordinated control swing arc, which comprises the following steps: selecting a welding power supply which is composed of two power supplies which are cooperatively controlled and both output direct-current sinusoidal current, and the phase difference of the two currents is a half wave; the two tungsten electrodes are close to each other, belong to two power sources and are symmetrically arranged in the welding direction, the included angle between the length and the vertical direction and the distance between the tips of the two tungsten electrodes can be adjusted, the two tungsten electrodes are connected with the negative electrode, and the workpiece is connected with the positive electrode; the electric arc is generated between the double-tungsten-electrode electrode and a workpiece and periodically swings left and right along with the change of the current; a welding wire is conveyed to a high-temperature area on the