Water-cooling welding gun

Abstract

The invention discloses a water-cooling welding gun and relates to the technical field of welding. The water-cooling welding gun comprises a gun body, an electrode bar and an end water-cooling body; the gun body sleeves the electrode bar; one end part of the electrode bar is an electric arc bearing part; the electric arc bearing part extends out of one end of the gun body; the electric arc bearing part is conical; the electric arc bearing part is used for generating and bearing an electric arc; the end water-cooling body is in a sleeve shape, the end water-cooling body is sleeved on the electric arc bearing part, and the tip end of the electric arc bearing part extends out of the end water-cooling body; and an insulating layer is arranged outside the end water-cooling body. According to the water-cooling welding gun, electric arc rising is restrained through the cooling effect of the end water-cooling body on the electric arc bearing part of the electrode bar and the insulating layer on the surface of the end water-cooling body, so that the effect of compressing the electric arc is achieved, the density and stiffness of the electric arc are improved, small current and great welding penetration are achieved, the welding efficiency is improved, and the welding cost is reduced.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a water-cooled welding torch. Background technique [0002] Arc welding uses an electrode to carry an arc to provide a heat source to the workpiece to be welded, thereby melting the welding wire and the base metal to achieve the purpose of permanent connection. Traditional tungsten argon arc welding (TIG welding) is widely used in various industrial fields due to its non-melting characteristics of electrodes, high arc quality, and high-quality welding. However, due to the limited current carrying capacity of the tungsten electrode, the low current density and low arc pressure of the TIG welding arc lead to low welding efficiency, which limits further production applications. [0003] In order to improve the ability of the tungsten electrode to carry current and improve the shortcomings of low efficiency of traditional TIG welding, scholars at home and abroad have proposed a hig...

AI Technical Summary

Problems solved by technology

However, these welding methods cool the tungsten pole in the tungsten cylinder area. When the welding current increases, the temperature of the tungsten pole tip will inevitably rise, and the arc will rise on the tungsten cone surface. Hole welding requires high stability

In order to improve the stability of the K-TIG arc, domestic universities such as Tianjin University and South China University of Technology have proposed different small hole welding methods under the magnetic control mode, but these methods need to increase the magnetic control device and improve the phenomenon of the cathode arc climbing limited

Images