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Lanthanum oxide has the lowest electron work function and the lowest tip temperatureit, it is easy to arc, which helps prevent grain growth to improve service life.
Most of the thorium tungsten electrodes have good electron emission ability, and the electron work function is about 2.7eV, which can enhance combustion stability.
Thorium tungsten electrode has a strong electron emission, and its electron work function is generally at 2.7eV, with the large current density and stable arc burning, so it also used in DC of welding. Basic Parameter Code
Characteristic Electron work function of lanthanum tungsten electrode WL15 is 2.7-2.8eV, which is similar to thorium tungsten electrode, and the most important is that it has not radioactive damage.
If used improperly, it can cause arcing drift, and split, resulting in consuming more money. What's more, there is a certain risk. Add rare earth oxide in tungsten metal, which can stimulate the electron work function, thereby improving its welding performance.
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