Lanthanum Tungsten Electrode Composition and Performance

Lanthanum tungsten electrode is a hundred years European countries have introduced a class of products , the purpose is expected to replace with radioactive thorium tungsten electrode . Once launched , lanthanum tungsten electrode will by the international community praised the welding , and its export volume has considerable tungsten electrodes with thorium . Lanthanum tungsten electrode is characterized by conductive properties closest to 2% thoriated tungsten electrodes , durable high burning rate of the current minimum .

Lanthanum oxide, lanthanum component comprising tungsten oxide, lanthanum into 2 %, 1.5% , 1%, three levels . Lanthanum is a rare earth, and no radioactive , it is known as lanthanum tungsten electrodes substituted products thoriated tungsten electrode . Lanthanum tungsten electrode is mainly used for DC welding, AC welding can also play a good effect . 1.5% lanthanum tungsten electrode , low current, easy arc starting and stable low current arc . 2% lanthanum tungsten thorium tungsten electrode life longer than in most use arcing easier . Especially good (a) to prevent thermal shock , (b) short cycle repeated ignition welding case , the welding good (c) to avoid contamination.

Lanthanum tungsten electrode welding performance is to add 1-2 % tungsten lanthanum oxide electrodes , electron work function at the 2.7-2.8ev, thorium tungsten electrode has the most similar properties. When used in the small current arc resistance and burning performance than thoriated tungsten electrodes have improved .

Lanthanum tungsten electrode due to non-radioactive and become a more promising alternative to thoriated tungsten electrodes . Another advantage is its high durability and burning rate of the current minimum , so lanthanum tungsten electrodes by Asia, Europe , America and Japan and other countries clients.


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