Gas shielded welding tool

The utility model discloses a gas shield welding tool which comprises a gas conveying pipe and a protective cover, the protective cover is in a shape with a narrow upper part and a wide lower part, a cover plate is arranged at the upper end of the protective cover, the gas conveying pipe is connected to the cover plate and communicated with the protective cover, a flat horn-shaped nozzle is arranged at the lower end of the protective cover, and the nozzle is communicated with the gas conveying pipe. The outer walls of the two ends, in the flat direction of the nozzle, of the protective cover are a front edge and a rear edge respectively, and the front edge and the rear edge obliquely extend from the upper end of the protective cover to the lower end of the protective cover respectively. The method is quite easy to operate, low in cost, wide in application range and capable of well improving the protection effect of the back face of the welding seam. 本实用新型公开了一种气体保护焊接工装，包括输气管和护罩，所述护罩呈上窄下宽形状，所述护罩的上端设置有盖板，所述输气管连接