Principles, Advantages and Disadvantages of Tungsten Argon Arc WeldingⅡ

China Cutting Torch Manufacturers share with you.
④Suitable for thin plate welding, all-position welding Even with a small current of several amps, tungsten argon arc can still burn stably, and the heat is relatively concentrated, so it can weld 0.3 mm thin plates; pulsed tungsten argon arc welding It can also perform all-position welding and single-sided welding without padding and double-sided welding.
⑤ The welding process is easy to automate. The arc of tungsten arc welding is open arc. The welding process parameters are stable and easy to detect and control. It is an ideal automation and even robotic welding method.

⑥ No slag in the welding area Welders can clearly see the forming process of the molten pool and weld.
Tungsten arc welding has the following disadvantages:
① Poor wind resistance Tungsten arc welding uses gas for protection, and its ability to resist lateral wind is poor. When the side wind is small, the protection effect can be ensured by reducing the distance from the nozzle to the workpiece and increasing the protective gas flow; when the side wind is large, wind prevention measures must be taken.
② High requirements for workpiece cleaning. Because inert gas is used for protection, there is no metallurgical deoxidation or dehydrogenation. In order to avoid defects such as pores and cracks, oil contamination and rust on the workpiece must be removed strictly before welding.
③ Low productivity Due to the limited current carrying capacity of tungsten electrodes, especially the allowable current of tungsten electrodes in AC welding is lower, which results in lower penetration capacity of tungsten electrode argon arc welding, lower welding speed and lower welding productivity.
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