TIG welding gun

Abstract

The invention provides a TIG welding gun. The TIG welding gun comprises a water electric pipe positioned in the axis position, a core rod arranged at the outer periphery of the water electric pipe, a tungsten electrode clamp fixed at one end of the core rod, an electric conducting connection base fixed at the other end of the core rod and connected with the water electric pipe, a water cooling jacket arranged at the outer side of the core rod, an insulation block fixedly connected between the water cooling jacket and the electric conducting connection base in the axial direction, a shell fixed at the outer periphery of the water cooling jacket, and a water outlet pipe fixed on the electric conducting connection base. An isolation part is arranged in the core rod near the tungsten electrode clamp. The water electric pipe extends to the position of the isolation part, and is provided with a first water outlet hole penetrating through in the radial direction. A first water cavity communicated with the first water outlet hole is formed between the core rod and the water electric pipe. The electric conducting connection base is provided with a first water inlet communicated with the first water cavity. A second water cavity is formed between the water cooling jacket and the shell. The electric conducting connection base and the insulation block are formed with a first communication hole for communicating the first water inlet with the second water cavity and a second communication hole for communicating the second water cavity with the water outlet pipe.

Description

technical field [0001] The invention relates to a TIG welding torch, in particular to a TIG welding torch capable of carrying large current for welding. Background technique [0002] Tungsten inert gas welding (Tungsten Inert Gas, abbreviated TIG) is often referred to as an arc welding method that generates heat between a non-consumable electrode and a work piece; the electrode rod, molten pool, arc and work piece are adjacent to the heated area. The protection of the gas state isolates the atmosphere from mixing. This protection is supplied by the gas or mixed gas flow. It must be able to provide full protection, because even a small amount of air mixing will pollute the weld bead. It can be seen that high-quality welding during TIG welding represent. However, traditional TIG welding still has obvious limitations. On the one hand, the welding speed is slow, generally 60 to 200 mm per minute, and the efficiency is low; It can penetrate workpieces with a wall thickness of l...

AI Technical Summary

Problems solved by technology

The key device of this kind of TIG welding is a high-current welding torch. However, when the standard welding torch on the market uses 500A current welding, it only has a duty cycle of 60% at most, and the maximum welding current is only 300A when the duty cycle reaches 100%. far from meeting the needs

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