Compound Tungsten Electrode WR
Metallograph:
Welding Positions:
Description：
Combined Tungsten Electrode is the Tungsten material with two or more rare earth oxide additives. Every additive works to the benefit of others and serves as a complement at the same time to make its welding performance more outstanding.
Multivariate composite rare earth tungsten electrode: with the progress and development of welding industry, more stringent requirements are put forward in the relablity and stability of electrode material. Rare earth oxides with high melting point, the good thermal-electron emission property, excellent thermionic emission performance, become the main material instead of thoriated tungsten electrodes,and in small - specification welding has successfully replaced the thoriated tungsten of tungsten electrode; But in AC hydrogen arc welding, there still exists shortcomings such as poor arc initiation, short service life etc. In general, the arc characteristics of compound rare-earth tungsten electrode are better than the unit rare earth tungsten electrodes, also in the compound rare -earth tungsten electrode, the tri-compound is superior to the binary. Multivariate composite rareearth tungsten electrode is considered to be the best material to substitute the thorium-tungsten electrode.
Energy spectrum analysis:
