Pipeline all-position automatic tungsten inert gas welding (TIG welding) machine and welding process thereof

Abstract

The invention discloses a pipeline all-position automatic tungsten inert gas welding (TIG welding) machine, belongs to the technical field of automatic welding equipment, and has wide applications inpipelines and pipe butt joint all-position automatic welding. The pipeline full-position automatic TIG welding machine comprises a walking welding trolley, wherein the welding trolley performs circular motion along a pipeline; a wire feeding mechanism and a welding gun are arranged on the body of the welding trolley; a hot wire nozzle is arranged at the tail end of the wire feeding mechanism; thehot wire nozzle is a copper pipe; one end of the hot wire nozzle is connected with a heating power supply through a lead wire; an anode connecting wire is also arranged; one end of the anode connecting wire is connected with the heating power supply; and the other end of the anode connecting wire is a free end. The invention solves the problem of preheating welding wires in the prior TIG welding,ensures that the welding wires are preheated before welding, and solves the problem that distance between a welding gun and a welding pipe fitting cannot be conveniently adjusted, so that wire feedingis stable, and welding quality and welding efficiency of the pipeline full-position automatic TIG welding are effectively improved.

Description

technical field [0001] The invention relates to an all-position automatic TIG welding machine for pipelines, which belongs to the technical field of automatic welding equipment and is widely used in all-position automatic welding of pipelines and pipes. Background technique [0002] There are many types of all-position pipeline automatic welding. According to whether preheating is performed before welding, it can be divided into hot wire welding and cold wire welding. The so-called hot wire welding means that the welding wire is preheated before entering the molten pool, so that the cladding efficiency and welding The speed is greatly improved compared with ordinary cold wire welding. As a typical representative of high-efficiency argon arc welding, hot wire argon arc welding not only ensures the welding quality, but also improves the melting speed and filling speed of the welding wire by preheating the welding wire, thus greatly improving the welding efficiency. Compared w...

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Problems solved by technology

[0007] The purpose of the present invention is to make up for the low degree of automation in TIG welding in the prior art, and to provide a pipeline that can realize welding wire preheating, welding torch can be easily adjusted during welding, and wire feeding is stable All-position automatic TIG welding machine and its welding process

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