Thorium-Tungsten Electrode is widely used as an additive oxide electrode, having much more advanced comprehensive welding performance than the properties of pure tungsten electrode and other additive oxide electrodes. It can not be replaced by other oxide electrodes during long using process. It can be operated easily, has a high current load and produces arc easily and steadily. In adddtion, the gap of the
breaking arc is big, loss less and life longer. It has higher recrystallizing temperature, better conductivity and mechanical cutting property. Now, Thorium-Tungsten Electrode is widely used in welding carbon steel, stainless steel, nickel alloy and titanium metal. It becomes the first selection material for hight quality welding.
Cerium-Tungsten Electrode is a nonradiative and green product. It can stare performing arc with a low current. It is known to be expecially goo for direct welding with low amperage because it starts very
easily at low amps. Therefore it is very popular in twelding of pipeline, fine parts, short welding cycles
and given number welding.
Lanthanum-Tungsten Electrode is well known its good welding performance. It is the electrode added with 1-2% of LaO. The power of its electronic transgression is 2.7-2.8ev. Bearing the closest features to those of thorium-tungsten electrode. Its arc features and burn spoilage endurance are better when used in small or medium currents condition.
Lanthanum-Tungsten Electrode is the most promising substitution product of thorium-tungsten electrode
because of its nonradiation. Its another advantage is the endurance of high current but low burn spoilage rate.
The pure Tungsten Electrode is the electrode without any addition of oxide. The power of electrode transgression is as high as 4.5ev. Requiring a high voltage of arc derivation; it has a low current capacity
and easily burnt. Consequently, it is commonly used in condition of AC and low welding requirments.
