Have you ever noticed a slight “buzz” sound from a nearby portable radio when doing TIG welding? You’re not imagining things; this sound is caused by an interference from AC welding. Today our robotic welding team is sharing some insight as to why this occurs and how to prevent it from damaging your electrical equipment.
How Does TIG Welding Impact Radio Frequency?
Gas Tungsten Arc Welding (GTAW), also known as Tungsten Inert Gas (TIG) welding, does cause radio frequency interference. This is caused by high frequency (HF) that stabilizes the AC. While this is not typically true of newer AC inverters, a lot of GTAW machines or welding systems display arc instability in AC without the stabilizing HF.
Potential Damage from Interference
It’s important to be aware that this interference can damage your electrical equipment if left nearby. One example of the type of damage this can cause is in the case of using AC GTAW on an automobile. If you fail to unplug the solid-state vehicle modules and engine computer prior to welding, the robot controller could be destroyed.
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