Lanthanum tungsten electrode has excellent arcing performance, and can even be said to be one of the types with the best arcing performance among all types of tungsten electrodes. This advantage is mainly due to the good electron emission ability of its doped lanthanum oxide (La₂O₃).
The following points can more specifically illustrate the characteristics of its arcing performance:
1.Easy to ignite the arc
The low arcing voltage required for lanthanum tungsten electrode can easily ignite the arc even under low current or sheet welding conditions, reducing arcing difficulties and “ignition” failures.
2.The arc start is soft and stable
The arcing process is smooth, without jumping, avoiding “undercuts” or splashing at the beginning of the weld, which helps to improve the appearance quality of the weld, especially suitable for robotic welding, precision welding or automated welding.
3.Strong ability to repeat the arc multiple times
Lanthanum tungsten electrodes have good heat resistance, are not easy to ablation, and can maintain good electron emission characteristics even after repeated arcing, which is not easy to damage the tip shape and prolong the electrode life.
4.Good compatibility with welding equipment
Whether using high-frequency arcing, high-voltage boost arcing, or contact arcing, lanthanum tungsten electrodes exhibit excellent responsiveness and stability, and are widely adaptable.
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