Spherical all-welded ball valve middle channel double-gun submerged arc welding device and welding process

Abstract

The invention provides a spherical all-welded ball valve middle channel double-gun submerged-arc welding device and a welding process, and belongs to the technical field of welding. The spherical all-welded ball valve middle channel double-gun submerged-arc welding device comprises a stand column and a placing table, wherein, the placing table is located on one side of the stand column, the lower end of the stand column is fixedly connected with a mounting base, the rear end of the stand column is slidably connected with a lifting sliding plate, the upper end of the stand column is fixedly connected with a driving mechanism, the rear end of the lifting sliding plate is slidably connected with a cross beam, the left end of the cross beam is fixedly connected with a T-shaped beam, the left end of the T-shaped beam is slidably connected with two transverse moving sliding plates, the left ends of the two transverse moving sliding plates are each provided with a set of welding mechanism, two sets of welding mechanism are corresponding to the placing table, and the placing table is provided with a set of fixing mechanism. The welding device aims at solving the problems that in the prior art, when most middle channel double-gun submerged arc welding devices are used for welding ball valves, welding wires are prone to melting and splashing, and in addition, due to the fact that the surfaces of welding seams are rough, the post-welding procedures of the ball valves are tedious.

Description

technical field [0001] The invention belongs to the field of welding technology, and in particular relates to a double-gun submerged arc welding device and a welding process in the center of a spherical fully welded ball valve. Background technique [0002] In the prior art, the ball valve is a relatively common valve that controls fluid flow through a rotary motion switch. It is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. The ball valve is widely used in petroleum refining. , long-distance pipelines, chemical industry, papermaking, pharmaceuticals, water conservancy, electric power, municipal, steel and other industries, occupy a pivotal position in the national economy. The cock body spool is a sphere with a cylindrical through hole or channel passing through the valve axis. It has an action adjustment range of 90 degrees of rotation, and it can be closed tightly only by operating a small angle of rotation. The ball valv...

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Problems solved by technology

[0004] The object of the present invention is to provide a spherical fully-welded ball valve middle channel double-gun submerged arc welding device and welding process, aiming at solving the problem of welding wire when most of the middle channel double-gun submerged arc welding devices in the prior art perform ball valve welding. It is easy to melt and splash. In addition, due to the rough surface of the weld seam, the post-welding process of the ball valve is cumbersome.

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