Cerium-Tungsten Electrode 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. |
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Trade mark |
Added
impurity |
Impurity
quantity |
Other
impurities |
Tungsten |
Electric
discharged
power |
Color
sign |
|
WC20 |
CeO2 |
1.80 - 2.20% |
<0.20% |
The rest |
2.7 - 2.8 |
Grey |
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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 |
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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.
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|
Trade mark |
Added
impurity |
Impurity
quantity |
Other
impurities |
Tungsten |
Electric
discharged
power |
Color
sign |
|
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 |
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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 content |
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and processing properties.
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|
Trade mark |
Added
impurity |
Impurity quantity |
Other
impurities |
Tungsten |
Electric
discharged
power |
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.
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|
|
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 | |
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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 |
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out of the ordinary in the electrode family. The new type Composite Tungsten Electrode developed by us has been listed in Stade Developing Plan for new products.
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Electrode Name |
Trade
mark |
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 |
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