Thorium Tungsten Electrode
- Details
- Category: Tungsten Information
- Published on Wednesday, 27 January 2016 08:55
Thorium tungsten electrode is kind of rare earth tungsten electrode which adding 1% -2% of thorium oxide in tungsten-based alloys, produced by powder metallurgy. Thorium tungsten electrode is the first used rare earth electrode and has best welding performance. It has low electronic features, high recrystallization temperature, good electrical conductivity, good mechanical cutting and other good properties. However, because thoria is a radioactive material, which is affected by the radiation produced in the welding process and radioactive contamination. The harm caused by radiation on the human body is mainly external irradiation and enters the body through the respiratory and digestive systems occurs in vivo exposure. So people gradually developed a variety of rare earth tungsten electrode to take place tungsten electrodes thorium, such as cerium tungsten electrode, lanthanum tungsten electrodes.
The tip color of thorium tungsten electrodes is varies according to the amount of doping, when thorium oxide (ThO2) doping amount between 0.90% to 1.20%, the tip color is yellow; doping amount between 1.8% ~ 2.2%, the tip color is red; doping amount between 2.80% - 3.20%, the tip color is purple; doping amount between 3.80% - 4.20%, the color is orange.
Thorium tungsten electrodes has good operating performance which can operate well in the current overload, so often as the DC negative electrode or as the positive electrode using in carbon, stainless steel, the nickel alloys, and titanium alloy. The experiment found that the thorium tungsten electrode which content 2% thorium oxide has the lowest work function, so that it can work well in an overload voltage and has long life. Its performance is better than adding 1% thorium tungsten electrode which added 1% thorium oxide. When using the electrode for welding should fast and be careful to take place DC welding in front of the AC welding. Because when AC welding, ball balled will not melt, so the effect is not well as liquid ball.
| Tungsten Supplier: Chinatungsten Online www.chinatungsten.com | Tel.: 86 592 5129696; Fax: 86 592 5129797;Email:sales@chinatungsten.com |
| Tungsten News & Prices, 3G Version: http://3g.chinatungsten.com | Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn |
sales@chinatungsten.com
闽公网安备 35020602000140号