Lanthanum Tungsten Electrode Manufacturing Method And Composition

Lanthanum tungsten electrode manufacturing method relates to a method mainly used for TIG ( tungsten inert gas welding ) and PLASMA ( plasma ) technology for metal welding , cutting, spray coating , smelting a method of manufacturing the tungsten electrode . Wherein : a, and include use of lanthanum acetate APT, tungsten and tungsten trioxide powder made ​​of solid material slurry water mixed to prepare lanthanum tungsten-coated powder ; b, lanthanum tungsten-coated powder decomposition of lanthanum the process is carried out in a hydrogen atmosphere . The method of the present invention can be more fully decomposed lanthanum , significant improvement in the melt down process Chinese conductivity material , and the decomposition of the lanthanum salt and reduction process in the same equipment at the same time , simplify the process, which can effectively reduce the hours of work, saving energy.

Lanthanum tungsten electrode welding in alternating current outstanding performance . Also, because the end of the electrode in the welding process spherical, contamination resistance is very strong, very suitable for welds shall be subjected to serious pollution of the occasion . 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.


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