Tig welding is a widely used welding technique because of its precision and accuracy. However, it requires a specific electrode to complete the welding process efficiently. Tig Tungsten Electrodes are of different varieties and are used for different purposes in the welding process. As a welder, it is essential to understand the tungsten electrode types, their uses, and how to select the right one. This blog post will be your guide in understanding tig tungsten electrode types, uses, and selections.
What Are Tig Tungsten Electrodes?
Tig Tungsten electrodes are specific types of welding rods used in the process of tungsten inert gas (TIG) welding. They consist of a tungsten alloy that is typically mixed with other elements like thorium, cerium, or lanthanum to create the best arc characteristics for a given application. TIG electrodes are available in various sizes and shapes, including pointed, rounded-fine and ball-shaped tips, as well as various alloys such as pure tungsten and coloured thoriated wire. The shape you choose depends on your project requirements – each creates an efficient arc with different characteristics.
Types Of Tig Tungsten Electrodes
Tig tungsten electrodes come in different types, classified based on their composition and additives. The common types include pure tungsten, Thoriated tungsten, Ceriated tungsten, Lanthanated tungsten, and Zirconiated tungsten. Pure tungsten is the most basic electrode type, but it has limitations when it comes to dealing with high amperes. Thoriated tungsten is a tungsten electrode with a small percentage of thorium oxide. It is known for its durability and excellent arc stability.
Created tungsten is ideal for welding low-amperage metals because it has a low burn-off rate. Lanthanated tungsten, on the other hand, has better arc stability and significant electrode life. Lastly, Zirconiated tungsten has excellent heat resistance and remains stable for longer, making it perfect for aluminium and other non-ferrous materials.
Uses Of Tig Tungsten Electrodes
The uses of tig tungsten electrodes vary based on the type. Pure tungsten electrodes are ideal for dealing with low-amperage metals like aluminium. Thoriated tungsten remains a favourite for many welders because of its versatility in dealing with various metals like steel, nickel, and titanium. Ceriated tungsten is commonly used for welding steel and stainless steel, while Lanthanated tungsten is suitable for aluminium, copper alloys, and nickel alloys. Zirconiated tungsten is perfect for welding aluminium alloys, copper alloys, titanium alloys, and nickel alloys.
How To Select Tig Tungsten Electrodes
The selection of the right tungsten electrode depends on the kind of material you are working on and the amperage of the welding task. The first step is to identify the type of metal that you will be welding. Different types of metals require different tungsten electrodes. Once you have identified the metal, you can select the tungsten type that is suitable for the material.
The next step is to determine the required amperage for the welding task. For low-amperage welding, you can opt for pure or created tungsten electrodes. For high-amperage welding, Thoriated or Lanthanated tungsten electrodes are a great choice. Zirconiated tungsten electrodes are perfect for alloys, especially when high amperage is required.
Best Practices for Handling Tig Tungsten Electrodes
Tig tungsten electrodes are delicate and require proper handling to protect their integrity. The electrodes are easily contaminated and can result in weak welds or arcs. Always handle the electrodes with clean gloves and avoid touching their surface with bare hands to prevent contamination. Proper storage in a dry place is also important to protect the tungsten electrode from moisture.
Conclusion
In conclusion, tig tungsten electrodes play a significant role in the tig welding process. Understanding the types, uses, and selection process is essential for accurate and precise welding results. With this guide, selecting the right tungsten electrode will be easier for both seasoned and aspiring welders. Remember to always handle the tungsten electrode with care to protect its integrity and ensure optimal welding results.
