TIG welding gun and welding cooling method

Abstract

The invention discloses a TIC welding torch; a torch head includes a tungsten electrode, a shielding gas hood and a fixing seat; a torch body includes an insulating liner, a cooling tube cylinder, a tungsten electrode clamp and a compression adjusting rod which are coaxially sheathed from the outside to the inside; the front end of the tungsten electrode clamp is against to the position of a conical hole in front of a through hole in the fixing seat; the shielding gas hood is sheathed in the periphery of the fixing seat body; the front end of the cooling tube cylinder is sheathed to the connection part of the fixing seat; a cooling water channel is formed between the insulating liner and the cooling tube cylinder; an annular gas chamber used as a shielding gas channel is formed in the torch body; gas distribution holes arranged in an acute angle with the coaxial direction are uniformly arranged along the circumferential direction on the fixing seat. In the welding cooling method, the torch body is cooled by the cooling water; the shielding gas firstly cools the tungsten electrode and the surrounding parts and then carries out protection to a welding line during a welding process. The welding torch and the welding cooling method can effectively cool the welding torch and the torch body, the tungsten electrode and the surrounding parts, and can avoid the leakage of the cooling water; the welding torch has a simple structure and is easily dismounted, thus improving the welding quality and the service life of the welding torch.

Description

technical field [0001] The invention relates to a welding device, in particular to a TIG welding torch and a cooling method. Background technique [0002] During the welding process of the TIG welding torch, the temperature of the tungsten electrode is extremely high. Rapid and long-lasting cooling of the tungsten electrode and the parts around the torch is required to ensure that the tungsten electrode will not be burned quickly and affect the welding quality. Such as figure 1 Shown, the welding torch of prior art is made up of mandrel 24, cooling pipe shell 23, insulating bushing 22, connecting seat 36, sealing ring 35,38, water distributor 37, radial water hole 28,29, compression cover 39, tungsten pole clip 34 and compression adjusting rod 33 etc. are formed. The protective gas distribution hole 26 is located at the front end of the mandrel 24, the front end of the cooling tube body 23 is provided with a water inlet 25 and a water return port 30, the tungsten electrode...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art that the cooling water is easy to leak, which seriously affects the welding quality and the service life of the welding torch, the structure of the welding torch is complex, and the requirements for sealing performance and sealing materials are high, the present invention provides a torch body capable of effectively cooling the welding torch , tungsten electrode and surrounding parts, and can avoid the leakage of cooling water, simple structure and easy to disassemble, and can improve welding quality and welding torch life.

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