13b. 2% Thoriated Red Tunsten Electrode

Tungsten electrodes are used in TIG welding, a process that uses a non-consumable electrode to produce the weld. The electrode is made of tungsten, which has the highest melting point of any metal (3,422°C). This means that the electrode does not melt during welding, which allows for precision and control.

There are three main types of tungsten electrodes: pure tungsten, thoriated tungsten, and ceriated tungsten. Pure tungsten electrodes are the most common type, and they are used for a wide variety of applications. Thoriated tungsten electrodes have a higher melting point than pure tungsten, and they are also more resistant to oxidation. Cerium tungsten electrodes have a lower melting point than pure tungsten, but they are more conductive.

The type of tungsten electrode that is used depends on the specific application. For example, pure tungsten electrodes are typically used for welding aluminum, while thoriated tungsten electrodes are often used for welding stainless steel.

The size and shape of the tungsten electrode also affects the welding process. The size of the electrode determines the amount of heat that is produced, and the shape of the electrode affects the arc stability. A sharp point is typically used for welding thin materials, while a ball-shaped tip is used for welding thicker materials.

The tungsten electrode is a critical component of the TIG welding process, and it is important to choose the right type and size of electrode for the specific application.

Here are some additional details about TIG tungsten electrodes:

• The diameter of the electrode ranges from 0.020" to 0.060".
• The length of the electrode ranges from 1" to 3".
• The tip of the electrode can be sharpened or rounded.
• The electrode is held in a TIG torch, which directs the arc and protects the electrode from the atmosphere.
• The inert gas that is used to protect the weld pool typically argon or helium.

TIG welding is a versatile process that can be used to weld a wide variety of metals. The use of tungsten electrodes allows for precision and control, which makes TIG welding a good choice for welding thin or delicate materials.