Welding gas protection device

Abstract

The invention discloses a welding gas protection device, and relates to the technical field of pipeline welding. The welding gas protection device comprises a gas cover, a welding gun and a connectingrod assembly. The gas cover is provided with a first side face and a second side face which are oppositely arranged; the welding gun is connected with the gas cover and extends in the direction fromthe first side face to the second side face; and the connecting rod assembly is arranged on the second side face of the gas cover and used for applying action force in the preset direction to the gascover under the effect of a welding head, thus the gas cover can travel in the mode of being closely attached to a pipeline, and angle adjusting of the welding gun can be achieved in the radial planeof a welding seam where the to-be-welded pipeline is located. The welding gas protection device is flexible, easy and convenient to operate, low in argon consumption, high in work efficiency, good ingas protection effect and high in versatility, the angle of the welding gun in the radial plane of the welding seam where the to-be-welded pipeline is located can be adjusted in real time, and thus the welding seam forming quality is ensured.

Description

technical field [0001] The invention relates to the technical field of pipeline welding, in particular to a welding gas protection device. Background technique [0002] In the prior art, titanium and titanium alloys have active chemical properties, and the high-temperature zone of the weld is easily reacted with nitrogen, oxygen, and hydrogen in the air during the welding process, which affects the performance of the weld. Therefore, gas protection is required when welding titanium and titanium alloys, and gas protection is a key factor to ensure the quality of welded joints. It is commonly used in engineering to use argon gas protection with a drag gas hood, which has the following disadvantages: (1) The degree of automation is low, and workers usually need to manually move the drag gas hood; (2) The sealing performance is poor, and the usually used The gas hood is fixedly connected to the welding torch. According to the requirements of the welding process, it is often nec...

AI Technical Summary

Problems solved by technology

It is commonly used in engineering to use argon gas protection with a drag gas hood, which has the following disadvantages: (1) The degree of automation is low, and workers usually need to manually move the drag gas hood; (2) The sealing performance is poor, and the usually used The gas hood is fixedly connected to the welding torch. According to the requirements of the welding process, it is often necessary to adjust the angle of the welding torch during the welding process. As the welding progresses, the gap between the gas hood and the surface of the workpiece to be welded becomes larger and larger, resulting in poor welding gas protection. , affecting welding quality

Images