High-frequency arcing does pose a certain risk of damage to tungsten electrodes, but if operated correctly, the impact is manageable and small.
High-frequency arcing generates an electric arc between the tungsten electrode and the workpiece through high-frequency and high-voltage pulses, without the electrode directly contacting the weldment, and the arcing is fast and stable. However, this high-frequency voltage generates a strong electric field at and around the electrode, causing local electrical corrosion, ablation, or microscopic sparks on the surface of the tungsten electrode, resulting in damage to the electrode surface, manifested as slight roughness or ablation at the ends.
However, this type of damage is usually relatively minor, and the overall life of the tungsten electrode has little impact. Properly adjust the frequency and power of high-frequency arcing to avoid excessive frequent arcing, which can effectively reduce the wear of tungsten electrodes. At the same time, maintaining a good flow of protective gas and a clean operating environment also helps protect the electrodes.
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