Tungsten Electrode for TIG Welding
In the vast landscape of modern science and industry, the tungsten boat emerges as a remarkable tool with diverse and crucial applications.
Tungsten boats are crafted from tungsten, a metal known for its exceptional properties. Tungsten has an incredibly high melting point, excellent thermal conductivity, and remarkable resistance to chemical reactions. These qualities make it the ideal material for creating vessels that can withstand extreme conditions.
One of the primary applications of tungsten boats is in the field of vacuum deposition. Here, the boat is heated to high temperatures within a vacuum chamber. Materials placed on the boat vaporize and deposit onto a substrate, forming thin films with precise thickness and composition. This process is essential in the manufacturing of semiconductors. For instance, in the production of microchips, tungsten boats help deposit layers of materials like silicon and metals, creating the complex circuitry that powers our digital world.
In the realm of optics, tungsten boats play a vital role. They are used to deposit coatings on lenses and mirrors, enhancing their reflectivity and transmissivity. This leads to improved performance in optical devices such as cameras, telescopes, and laser systems.
The aerospace industry also benefits from tungsten boats. Components exposed to high temperatures and harsh environments during space travel are fabricated using the controlled deposition facilitated by these boats. Materials deposited in this manner provide superior heat resistance and durability.
Tungsten boats are also employed in the development of new materials for energy storage and conversion. They assist in the synthesis and characterization of materials for batteries and fuel cells, driving the search for more efficient and sustainable energy solutions.
In material science research, they enable the study of phase transitions and the properties of substances under controlled evaporation conditions. This helps scientists understand and manipulate the behavior of materials at the atomic level.
Furthermore, in the production of specialized coatings for various industrial applications, tungsten boats ensure the uniform and precise application of materials, enhancing the performance and longevity of the coated surfaces.
The tungsten boat is an indispensable component in numerous cutting-edge technologies. Its ability to facilitate controlled material deposition and evaporation makes it a key enabler of progress in multiple fields, shaping the future of science and industry.
Our standard product range
We produce evaporation boats made of molybdenum, tungsten, and tantalum for your application:
Tungsten evaporation boats
Tungsten is highly corrosion-resistant compared with many molten metals and, with the highest melting point of all metals, is extremely heat-resistant. We make the material even more corrosion-resistant and dimensionally stable by means of special dopants such as potassium silicate.
Molybdenum evaporation boats
Molybdenum is a particularly stable metal and is also suitable for high temperatures. Doped with lanthanum oxide (ML), molybdenum is even more ductile and corrosion-resistant. We add yttrium oxide (MY) to improve the mechanical workability of molybdenum
Tantalum evaporation boats
Tantalum has a very low vapor pressure and a low evaporation speed. What is most impressive about this material, however, is its high corrosion resistance.
Cerium-Tungsten Electrode
Cerium-Tungsten Electrodes have good starting arc performance under the condition of low crrrent. The arc current is low, therefore the electrodes can be used for welding of pipe,stainless and fine parts. Cerium-Tungsten is the first choice for replacing Thoriated Tungsten under the condition of low DC.
|
Trade mark |
Added |
Impurity |
Other |
Tungsten |
Electric |
Color |
|
WC20 |
CeO2 |
1.80 - 2.20% |
<0.20% |
The rest |
2.7 - 2.8 |
Grey |
Lanthanated Tungsten Electrode
The lanthanated tungsten became very popular in the circle of welding in the world soon after it was developed because of its good welding performance. The electric conductivity of lanthanated tungsten is most closed to that of 2% thoriated Tungsten. Welders can easily replace thoriated tungsten Electrode with lanthanated tungsten electrode at either AC or DC and not have to make any welding program changes. The radioactivity from thoriated tungsten can thus be avoided. Another advantage of lanthanated tungsten is being able to bear high current and having the lowest burn-loss rate.
|
Trade mark |
Added |
Impurity |
Other |
Tungsten |
Electric |
Color |
|
WL10 |
La2O3 |
0.80 - 1.20% |
<0.20% |
The rest |
2.6 - 2.7 |
Black |
|
WL15 |
La2O3 |
1.30 - 1.70% |
<0.20% |
The rest |
2.8 - 3.0 |
Yellow |
|
WL20 |
La2O3 |
1.80 - 2.20% |
<0.20% |
The rest |
2.8 - 3.2 |
Sky blue |
Zirconiated Tungsten Electrode
Zirconiated tungsten has good performance in AC welding, especially under high load current. Any other electrodes in terms of its excellent performance can not replace Zirconiated tungsten electrodes. The electrode retains a balled end when welding, which results in less tungsten permeation and good corrosion resistance.
Our technical staffs have been engaged in research and testing work and succeeded in solving the conflicts between zirconium contents and processing properties.
|
Trade mark |
Added |
Impurity quantity |
Other |
Tungsten |
Electric |
Color sign |
|
WZ3 |
ZrO2 |
0.20 - 0.40% |
<0.20% |
The rest |
2.5 - 3.0 |
Brown |
|
WZ8 |
ZrO2 |
0.70 - 0.90% |
<0.20% |
The rest |
2.5 - 3.0 |
White |
Thoriated Tungsten
Thoriated tungsten is the most commonly used tungsten material, Thoria is a low-level radioactive material, but it was the first to display a significant improvement over pure tungsten.
Thoriated tungsten is a good general use tungsten for DC applications, because it operates well even when overload with extra amperage, thus improves the performance of welding.
|
Trade mark |
ThO2 Content（%） |
Color sign |
|
WT10 |
0.90 - 1.20 |
Primary |
|
WT20 |
1.80 - 2.20 |
Red |
|
WT30 |
2.80 - 3.20 |
Purple |
|
WT40 |
3.80 - 4.20 |
Orange Primary |
Pure Tungsten Electrode: Suitable for welding under alternating current;
Yttrium Tungsten Electrode: Mainly applied in military and aviation industry with narrow arc beam, high compressing strength, highest welding penetration at medium and high current;
Composite Tungsten Electrode: Their performances can be much improved by adding two or more rare Earth oxides which are mutually complementary. The Composite Electrodes have thus become out of the ordinary in the electrode family. The new type Composite Tungsten Electrode developed by us has been listed in State Developing Plan for new products.
|
Electrode Name |
Trade |
Added impurity |
Impurity quantity |
Other impurities |
Tungsten |
Electric discharged power |
Color sign |
|
Pure Tungsten Electrode |
WP |
-- |
-- |
<0.20% |
The rest |
4.5 |
Green |
|
Yttrium-Tungsten Electrode |
WY20 |
YO2 |
1.80 - 2.20% |
<0.20% |
The rest |
2.0 - 3.9 |
Blue |
|
Composite Electrode |
WRex |
ReOx |
1.00 - 4.00% |
<0.20% |
The rest |
2.45 - 3.1 |