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    Tungsten Electrode

    Tungsten Electrode
  • Tungsten Electrode
  • Tungsten Electrode

    Tungsten electrode has a high melting point, high-density, corrosion resistance, strong electronic emission ability, conduct electricity. By adding some rare earth oxides (CeO, LaO, ThO), tungsten electrodes can be improved in the area of recrystallization temperature increasing and the ability of electron emission. For that reason, its welding performance may be better than before. During the past years, thoriated tungsten electrodes were wildly used in inert gas shield arc welding, plasma arc welding, and cutting. However, these are radioactive and unhealthy, compared to other tungsten electrodes, thoriated tungsten electrodes are replaced by created tungsten, lanthanide tungsten, multi-compound rare-earth tungsten electrode. Besides argon arc welding, AEM tungsten electrodes are eagerly used in xenon lamp and 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

    Lanthanated tungsten electrode is similar to thoriated tungsten electrode with the characters of on-radioactive, excellent electric conductivity, welding performance, high carrying capability, and a minimum ratio of burnt area. It can be substituted for a thoriated tungsten electrode, which is 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

    The compound rare earth Tungsten electrode is doped with various 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 Main substitute of 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 substituted 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 discontinuous welding.

    Thoriated-Tungsten Electrode

    It is radioactive. If it is compared with pure Tungsten electrodes and others, its welding performance is more excellent, with the advantages of easy operating, stable electric arc, and long-life.
    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, nickel alloy.

    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 voltage for arc derivation, low current 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

    A long, 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

    The Tungsten electrode rod is manufactured by forging, drawing, coarse grinding, and fine grinding process. We can supply any specifications of the 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 the low current circumstance. Its usage condition is the same as kinds of Tungsten electrode.

     

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