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    Tungsten Electrode

    Tungsten Electrode
  • Tungsten Electrode
  • 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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