Troubleshooting Why Your Tig Welder Will Not Strike an Arc

Do you have a TIG welder that is not striking an arc? If so, then you have likely encountered a common problem that many welders have had to deal with at some point. While this problem can be frustrating, it is important to keep in mind that it can usually be solved. In this article, we will discuss some of the possible reasons why your TIG welder will not strike an arc and what you can do to troubleshoot the issue.

The Basics of What Causes an Arc to Form

Before we can look at some of the reasons why your TIG welder will not strike an arc, it is important to understand the basics of what causes an arc to form. The arc forms when an electrical current passes between the tungsten electrode and the metal being welded. This current is supplied by the welder and is then converted into a spark, which then creates the arc.

Common Reasons Why Your TIG Welder Will Not Strike an Arc

Now that we have discussed the basics of what causes an arc to form, let’s look at some of the common reasons why your TIG welder will not strike an arc.

1. Incorrect/Damaged Tungsten Electrode

The tungsten electrode is an essential part of the welding process and is responsible for allowing the current to pass between it and the metal. If the tungsten electrode is not of the correct size or shape, or if it is damaged, then it will not be able to allow the current to pass, which can cause the welder to not strike an arc. Make sure to check your tungsten electrode for any signs of damage or incorrect size or shape.

2. Faulty/Dirty Gas Nozzle

The gas nozzle is responsible for delivering the shielding gas that protects the weld as it forms. If the gas nozzle is clogged or faulty, then it will not be able to deliver the gas properly, which can cause the welder to not strike an arc. Make sure to inspect your gas nozzle for any signs of damage or dirt and replace it if necessary.

3. Incorrectly Set Amperage and Voltage

The amperage and voltage settings on your TIG welder are essential for creating a successful weld. If the settings are not set correctly, then the welder will not be able to produce enough current to create the arc. Make sure to double-check your amperage and voltage settings and adjust them as needed.

4. Dirty or Poor Quality Welding Cable

The welding cable is responsible for delivering the electrical current from the welder to the tungsten electrode. If the welding cable is dirty or of poor quality, then it will not be able to deliver the current properly, which can cause the welder to not strike an arc. Make sure to inspect your welding cable for any signs of damage or dirt and replace it if necessary.

Conclusion

If your TIG welder will not strike an arc, then there are a few possible causes. The most common causes are an incorrect or damaged tungsten electrode, a faulty or dirty gas nozzle, incorrectly set amperage and voltage, and a dirty or poor quality welding cable. Make sure to inspect each of these components and adjust or replace them as needed to ensure that your welder is able to strike an arc.