Tungsten electrode is a tungsten electrode made of materials with high melting point, corrosion resistance, high density and good thermal and electrical conductivity. Tungsten electrodes are widely used for welding in their properties. Tungsten electrode grinding or polishing and black rod. The final colors are different, which can distinguish the differences. In tungsten electrodes, more importantly, their final color is different, and their tungsten content is also different. When welding, select the correct tungsten electrode to make welding easier. It is important to obtain high-quality welding. Some important factors to consider in making the right choice are the type of power supply (inverter or transformer), welding material (steel, aluminum or stainless steel) and material thickness.
Once launched, lanthanum tungsten electrode has attracted much attention and is very popular in the international welding industry with its excellent welding performance, especially sought after by the European Welding Academy. For this reason, the export volume of lanthanum tungsten electrode is second only to thorium tungsten, which is characterized by the conductivity closest to 2% thorium tungsten electrode, high durable current and minimum burning loss rate.
The most common lanthanum tungsten electrode contains 100% lanthanum oxide (la203), which is called lanthanum oxide. In Europe and Japan, lanthanum tungsten electrode has been the most commonly used alternative to thorium tungsten electrode in most applications. There are three kinds of lanthanum oxide: 2%, 1.5% and 1%. Lanthanum trioxide has the lowest electron escape work, the easiest arcing and the lowest tip temperature, which helps to prevent grain growth and improve service life. The test of lanthanum tungsten electrode containing 2% lanthanum shows that if there is no overload current, its service life is longer than that of thorium tungsten, and it is easier to start arc in most applications.
Especially good at (a) preventing thermal shock, (b) good welding in case of repeated ignition in short cycle welding, and (c) avoiding pollution. When welding pipes, welders are particularly satisfied with this lanthanum tungsten electrode. Reduce downtime due to long service life. Moreover, in general, the lanthanum tungsten electrode with 1.5% lanthanum oxide is also required. It is easy to start the arc at low current and can stabilize the arc at low current. Lanthanum in tungsten electrode is a rare earth and is not radioactive. This lanthanum tungsten electrode is mainly used for DC welding, and it will also have good results in AC welding. Lanthanum tungsten electrode containing 1.0% lanthanum oxide and cerium tungsten electrode appear on the market at the same time.
| Model | Added Impurity | Impurity quantity% | Tungsten% | Electric discharged power | Color sign |
| WL10 | La2O3 | 0.8-1.2 | The rest | 2.8-3.2 | Black |
| WL15 | La2O3 | 1.3-1.7 | The rest | 2.8-3.0 | Golden Yellow |
| WL20 | La2O3 | 1.8-2.2 | The rest | 2.6-2.7 | Sky blue |
Lanthanum tungsten electrode refers to the electrode product with an appropriate amount of lanthanum oxide added to the tungsten base. In many cases, it is used to replace thorium tungsten electrode. According to the doping amount of lanthanum oxide, the color of the color code coating head of lanthanum tungsten electrode material is also different: the color code of 0.8-1.2% electrode (WL10) is black, the color code of 1.3-1.7% electrode (WL15) is golden yellow, and the color code of 1.8-2.2% electrode (wl20) is sky blue. The results show that lanthanum oxide can significantly improve the service life of lanthanum tungsten electrode because of its low electron escape work, easy arcing and low tip temperature.
The tungsten lanthanum electrode with a content of 1.5% (different from 2.0%) has the conductivity closest to that of the 2.0% tungsten thorium electrode. Therefore, the welder can easily replace the electrode without changing the parameters of the equipment.
| Model | Dia | Length | Component | Welding material |
WL20 | 0.5MM | 150mm/175mm | La2O3， Yttrium oxide, cerium Allowance: Tungsten | carbon steel stainless steel copper aluminium |
| 1.0MM | ||||
| 1.6MM | ||||
| 2.0MM | ||||
| 2.4MM | ||||
| 3.0MM | ||||
| 3.2MM | ||||
| 4.0MM | ||||
| 4.8MM | ||||
| 5.0MM | ||||
| 6.0MM | ||||
| 7.0MM | ||||
| 8.0MM | ||||
| 10.0MM | ||||
| 12.0MM |
Packing:
10 pieces / plastic box, 150 mm or 175 mm in length, 1000 pieces per carton.
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