Tungsten Electrodes

Tungsten electrode product is the traditional and advantages product in our Factory. From the'80s, the factory began to the tungsten electrode product research and development, While unceasingly optimizes the cerium tungsten, the thorium tungsten, the pure tungsten and so on ordinary electrode production craft, our factory centralized scientific research strength, successively researches and develops the lanthanum Tungsten electrode, zirconium tungsten electrode, yttrium tungsten electrode and so on, receives the market widespread welcome. We can offer WC, WT. WL. WZ. WY and Proprietary-Compound Tungsten electrode which is belongs to the state 863 Hi-Technology R&D projects. 

Introduction of Tungsten Electrodes: 

Cerium Tungsten Electrode has good starting arc performance under the condition of low current. The arc current is low, therefore the electrodes can be used for welding of pipe, stainless and fine parts. Cerium Tungsten Electrodeis the first choice for replacing Thoriated Tungsten Electrode under the condition of low DC.

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

 
Lanthanated Tungsten Electrodes
The lanthanated tungsten electrode 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 electrode is being able to bear high current and having the lowest burn-loss rate.

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

 
Zirconiated Tungsten Electrodes
Zirconiated tungsten electrode 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 and processing properties.

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 Electrodes
Thoriated tungsten electrode is the most commonly used tungsten electrode, 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 Electrodes
Suitable for welding under alternating current;
Yttrium Tungsten Electrodes
 Mainly applied in military and aviation industry with narrow arc beam, high compressing strength, highest welding penetration at medium and high current;
Composite Tungsten Electrodes: Their performances can be much improved by adding two or more rare Earth oxides which are mutually complementary. The Composite tungsten 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 Stade Developing Plan for new products.

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