Tungsten Electrode
Tungsten electrode has the performance of high melting point, high density, corrosion resistance, strong ability of electronic emission, conduct electricity, etc.. Adding some rare earth oxides(CeO 、LaO 、ThO ), tungsten electrode can be improved in the area of recrystallization temperature increasing and the ability of electronic emission, for that reason, its welding performance may be better than before. During the past years, thoriated tungsten electrode were wildly used in the field of inert gas shield arc welding, plasma arc welding, cutting. However, radioactive and unhealthy, compared with other tungsten electrodes, thoriated tungsten electrode will be replaced by ceriated tungsten, lanthanated tungsten, Multi compond rare-earth tungsten electrode etc. Besides argon arc welding, AEM tungsten electrodes are wildly used in xenon lamp, painting fields.
Tungsten Electrode Specifications
|
Diameter |
Diameter Tolerance |
Length |
Length Tolerance |
|
mm |
inch |
mm |
mm |
mm |
|
1.00 |
0.040 |
±0.05 |
50, 75, 150, 175, 178 |
±0.10 |
|
1.60 |
1/16 |
±0.05 |
50, 75, 150, 175, 178 |
±0.10 |
|
2.00 |
5/64 |
±0.05 |
50, 75, 150, 175, 178 |
±0.10 |
|
2.40 |
3/32 |
±0.05 |
50, 75, 150, 175, 178 |
±0.10 |
|
3.20 |
1/8 |
±0.05 |
50, 75, 150, 175, 178 |
±0.10 |
|
4.00 |
5/32 |
±0.05 |
50, 75, 150, 175, 178 |
±0.10 |
|
4.80 |
3/16 |
±0.05 |
50, 75, 150, 175, 178 |
±0.10 |
|
6.40 |
1/4 |
±0.05 |
50, 75, 150, 175, 178 |
±0.10 |
|
8.00 |
5/16 |
±0.05 |
50, 75, 150, 175, 178 |
±0.10 |
|
10.00 |
25/64 |
±0.05 |
50, 75, 150, 175, 178 |
±0.10 |
Lanthanated-Tungsten Electrode
Lanthanted tungsten electrode, which is similar to thoriated tungsten electrode with the characters of on-radioactive, excellent electric conductivity and welding performance, high carryinh capability, minimum ratio of burnt area, can be substituted for thoriated tungsten electrode, mainly used for DC welding.
|
Type |
Oxide Addition |
Dopant |
Impurities |
W |
Electric Work Function |
Color |
|
WLa10 |
La2O3 |
0.8-1.2% |
<0.05% |
Bal. |
2.8 eV-3.2 eV |
Black |
|
WLa15 |
La2O3 |
1.3-1.7% |
<0.05% |
Bal. |
2.8 eV-3.2 eV |
Golden |
|
WLa20 |
La2O3 |
1.8-2.2% |
<0.05% |
Bal. |
2.8 eV-3.2 eV |
Sky blue |
Multi-compond Rare-earth Tungsten Electrode
Compound rare earth Tungsten electrode is doped with various of oxides, with excellent welding performance.
|
Type |
Oxide Addition |
Dopant |
Impurities |
W |
Electric Work Function |
Color |
|
WXY30 |
Multi-compond rare-earth |
1.0-4.0% |
<0.05% |
Bal. |
2.45 eV-3.10 eV |
Light blue |
|
Application |
Mainly substitute for radioactive thoriated Tungsten electrode and other Tungsten electrodes. |
Ceriated-Tungsten Electrode
Ceriated Tungsten electrode, with easier arc ignition and low arc maintaining current under low current circumstances, is substited for thoriated Tungsten electrode, especially for DC welding.
|
Type |
Oxide Addition |
Dopant |
Impurities |
W |
Electric Work Function |
Color |
|
WCe20 |
CeO2 |
1.8-2.2% |
<0.05% |
Bal. |
2.7 eV-2.8 eV |
Gray |
|
Application |
Applied for the welding of pipelines and small components, and discontinous welding. |
Thoriated-Tungsten Electrode
Radioactive. Compared with pure Tungsten electrodes and others, its welding perfomance is more excellent, with the advantages of easy operating, stable electric arc, long-life, etc.
|
Type |
Oxide Addition |
Dopant |
Impurities |
W |
Electric Work Function |
Color |
|
WTh10 |
ThO2 |
0.9-1.2% |
<0.05% |
Bal. |
2.0 eV-3.9 eV |
Yellow |
|
WTh20 |
ThO2 |
1.8-2.2% |
<0.05% |
Bal. |
2.0 eV-3.9 eV |
Red |
|
WTh30 |
ThO2 |
2.8-3.2% |
<0.05% |
Bal. |
2.0 eV-3.9 eV |
Purple |
|
WTh40 |
ThO2 |
3.8-4.2% |
<0.05% |
Bal. |
2.0 eV-3.9 eV |
Orange |
|
Application |
Mainly applied for carbon steel, stainless steel, nickle alloy, etc. |
Zirconium-Tungsten Electrode
Zirconiated Tungsten, with the advantages of AC welding, especially under high load current, can not be replaced by any other Tungsten electrodes.This kind of Tungsten electrode retains a balled end when welding, with corrosion resistance.
|
Type |
Oxide Addition |
Dopant |
Impurities |
W |
Electric Work Function |
Color |
|
WZr3 |
ZrO2 |
0.2-0.4% |
<0.05% |
Bal. |
2.5 eV-3.0 eV |
Brown |
|
WZr8 |
ZrO2 |
0.7-0.9% |
<0.05% |
Bal. |
2.5 eV-3.0 eV |
White |
|
Application |
Suitable for AC welding of aluminum, magnesium, and their alloys. |
Pure Tungsten Electrode
Non-addition,requiring a high coltage for arc derivation, low crrent capacity, and easily burnt.
|
Type |
Oxide Addition |
Dopant |
Impurities |
W |
Electric Work Function |
Color |
|
WTh10 |
--- |
--- |
<0.05% |
Bal. |
4.5 eV |
Green |
|
Application |
Suitable for AC welding of aluminum, magnesium, and their alloys. |
Yttrium-Tungsten Electrode
Long and thin arc beam with high compression, deeper burning groove under medium and high current circumstances.
|
Type |
Oxide Addition |
Dopant |
Impurities |
W |
Electric Work Function |
Color |
|
WY20 |
Y2O3 |
1.8-2.2% |
<0.05% |
Bal. |
2.0 eV-3.9 Ev |
Blue |
|
Application |
Mainly apllied for military industry and aerospace industry. |
Black Tungsten Electrode
Tungsten electrode rod is manufactured by the processes of forging, drawing, coarse grinding, fine grinding. We can supply customers with any other specification of Tungsten electrode rod.
|
Type |
Oxide Addition |
Dopant |
Impurities |
W |
Electric Work Function |
Color |
|
WCe20 |
CeO2 |
1.8-2.2% |
<0.05% |
Bal. |
2.7 eV-2.8 eV |
Yellow |
|
WLa15 |
La2O3 |
1.3-1.7% |
<0.05% |
Bal. |
2.8 eV-3.0 eV |
Red |
|
WTh20 |
ThO2 |
1.8-2.2% |
<0.05% |
Bal. |
2.0 eV-3.9 eV |
Purple |
|
Application |
Applied for argon arc welding under low current circumstance. Its usage condition is the same as kinds
of Tungsten electrode. |
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