Argon tungsten arc welding

The invention discloses argon tungsten arc welding. A composite pipe, a wire outlet nozzle, a short pipe, an arc-shaped connecting plate and a wire feed pipe are adopted; one end of the composite pipe is connected with a welding machine; a rotating head is also mounted at the bottom of the composite pipe; the wire feed pipe is connected between the rotating head and the welding machine; the arc-shaped connecting plate is connected between the middle of the welding machine and the short pipe; and the wire outlet nozzle is also connected with one end of the short pipe. With the adoption of the structure, a worker is prevented from lying on the ground for operation, the harm to the body of the worker is reduced, the angle of the wire feed pipe can be flexibly changed, heating without deformation is realized under the welding condition, and wire feed operation can be better performed on some corners where wires cannot be manually fed easily.