Silver tungsten electrode is also called silver tungsten rod or silver tungsten bar. It has the advantages of high melting point, high hardness, easy cutting performance, high conductivity, good wear resistance, nice resistance to welding and oxidation. The conductivity W-Ag electrode is even higher than that of tungsten copper alloy. Silver tungsten offers the ideal combination of the conductivity of silver and the arc resistance of tungsten. The common seen grades of silver tungsten electrode are AgW30, AgW40, AgW50, AgW55,…

Yttrium tungsten electrode is tungsten electrode added with 2% yttrium oxide (Y2O3). Its grade is WY20. The W-Y electrode’s resistance to burning is good at high current load, but the arc is unstable at low current load and the processing performance is poor. W-Y electrode, which has narrow arc beam, high compressing strength, and the highest welding penetration at medium and high current, is mainly applied in military industry and aerospace industry. Similar to thoriated tungsten electrode and cerium tungsten…

Zirconiated tungsten electrode is the electrode of tungsten containing small amount of zirconium oxide (ZrO2). There are two grades including WZ3 and WZ8. And their color signs are brown and white respectively. During welding, pure tungsten electrode is easily self-melt to contaminate the work piece under high load conditions. W-Zr electrode is developed to improve this condition. The W-Zr electrode is produced for AC welding as it retains a balled end for welding of aluminum and magnesium alloys, and has…

Cerium tungsten electrode is the electrode of tungsten added with 2% CeO2. It is the earliest developed non-radioactive tungsten electrode product in China. Its grade is WC20 with color sign of gray. Cerium tungsten electrode has excellent arc starting performance under low current load condition, and the arcing current is so small that it is often applied for welding pipes, stainless steel products and parts with high precision. The W-Ce electrode can meet the requirements of stainless steel welded pipe…

Lanthanated tungsten electrode is a new tungsten electrode developed to replace thoriated tungsten electrode. Its conductivity is closest to 2% thoriated tungsten electrode. And it has good endurance of high current and low burn spoilage rate without radioactive pollution. The lanthanated tungsten electrode is popular due to the relative ease of striking an arc and lower amperage required. It performs exceptionally well in both AC & DC applications. This type of electrode is effective for welding aluminum alloys, copper alloys,…

Thoriated tungsten electrode is the earliest used rare earth tungsten electrode. Compared with pure tungsten electrode, it has lower electronic ding, higher recrystallization temperature, better conductivity and mechanical cutting performance. Thoriated tungsten electrode is normally sharpened by grinding as part of the standard procedure while preparing to perform gas tungsten arc welding (GTAW). While this type of tungsten electrode contains thorium – a low-level radioactive material that emits alpha particles as well as some beta and gamma radiation, so that…

Pure tungsten electrode is the earliest electrode that applied for argon arc welding, and it is only used as a welding electrode or a resistance welding electrode under AC conditions as this type of electrode is prone to appear the phenomenon of no arc or pilot arc instability under DC welding conditions. This problem can be greatly approved by adding rare earth oxides. Generally, the tip of pure tungsten electrode is spherical, and is used in the process of sine…

Tungsten electrode is referred to as an electrode made of tungsten. It can be classified in accordance with the color of the electrode tip. There are a variety of tungsten electrodes. Tungsten electrode is divided into various types such as pure tungsten electrode, thoriated tungsten electrode, cerium tungsten electrode, composite tungsten electrode, lanthanated tungsten electrode, and silver tungsten electrode, etc. It depends on whether rare earth additive is added or not. Some types of tungsten electrode are shown as follows:…