What Are the Benefits of TIG Welding?

Understanding of TIG Welding

TIG welding is an arc welding method that uses external gas as a protective medium. Its advantages are good visibility of the arc and molten pool, and easy operation. There is no or little slag, and there is no need to clean the slag after welding. However, special windproof measures need to be taken when working outdoors.

According to whether the electrode melts during TIG welding, gas shielded welding can be divided into non-melting electrode (tungsten electrode) gas shielded welding and melting electrode gas shielded welding. The former includes tungsten inert gas welding, plasma arc welding, and atomic hydrogen welding. Atomic hydrogen welding is rarely used in production now.

In special applications, a small amount of hydrogen can be added to tungsten inert gas arc welding. Tungsten electrode argon arc welding is called when using argon gas as the shielding gas, and tungsten electrode helium arc welding is called when using helium gas. Due to the expensive price of helium gas, tungsten electrode argon arc welding is much more widely used in industry than helium arc welding.

Understanding TIG Welding Types

The operation modes of TIG welding types are divided into manual welding, semi-automatic welding, and automatic welding. In manual tungsten electrode argon arc welding, the movement of the welding gun and the addition of the filler wire are entirely manual; in semi-automatic tungsten electrode argon arc welding, the movement of the welding gun is manual, but the filler wire is automatically fed in by the feeding mechanism; In automatic tungsten electrode argon arc welding, if the workpiece is fixed, the welding gun is mounted on the welding carriage, and the travel and filler wire can be added by cold wire or hot wire. Hot wire refers to increasing the deposition speed. In some cases, such as welding thin plates or root passes, there is no need to add filler wire. Among the three welding methods mentioned above, manual tungsten electrode argon arc welding is the most widely used, and semi-automatic tungsten electrode argon arc welding is rarely used.

Advantages of TIG Welding Uses

• The use of TIG welding gas can effectively isolate the surrounding air; it itself is not soluble in metal and does not react with metal. During tungsten electrode argon arc welding, the arc also has the function of automatically removing the oxide film on the surface of the workpiece. Therefore, it can successfully weld easily oxidized, nitrated, and chemically active non-ferrous metals, stainless steel, and various alloys.

• The tungsten electrode arc used in TIG welding is stable, and it can still burn stably even at very small welding current (<10A), especially suitable for welding thin plates and ultra-thin sheet materials.

• The heat source and the filler wire in TIG welding can be controlled separately, so the heat input is easy to adjust, and various positions of welding can be performed. It is also an ideal method to achieve single-sided welding and double-sided formation.

• As the filler wire does not pass through the arc, there is no spatter, and the weld seam is beautiful.

As a leading metal processing supplier in China, Hunkmachining can provide you with quality TIG welding services in accordance with your own needs. Feel free to contact us at any time.