WC20 Cerium Tungsten Electrode for TIG Welding

Short Description:

Tianqiao brand cerium tungsten electrode is a tungsten electrode product made by adding rare earth cerium oxide to a tungsten base through powder metallurgy and rolling, grinding and polishing processes. Tianqiao brand cerium tungsten electrode has no radioactive pollution and is a green product. It can start an arc easily with only a small current, and the arc current is also small. Under low-current DC conditions or the electrode diameter is less than 2.0mm, cerium-tungsten electrode is the first choice for thorium-tungsten electrode.


  • Min.Order Quantity: 1 ton
  • Supply Ability: 2000 tons per Month
  • Free Sample: Available
  • Custom packaging: Welcome
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    The cerium tungsten electrode contains 2% cerium oxide. Cerium tungsten electrode is suitable for DC welding at low voltage, because it is easy to start arc at low voltage, and it is 10% lower than thorium tungsten at work. For pipeline welding, cerium tungsten electrode is the most popular, and it is also usually used to weld small parts. Compared with pure tungsten electrode, cerium tungsten electrode has lower burning rate or evaporation rate. As the content of cerium oxide increases, these advantages also increase. Cerium has the highest mobility, so at the beginning of welding, the welding performance is very good. Over time, as the crystal grains grow, the mobility will decrease significantly. However, under low voltage, the lifetime is longer than that of thorium tungsten electrodes. It is because of these characteristics that it is usually beneficial to short-cycle welding or specific welding volume before the electrode can be replaced. It is best to use thorium tungsten electrode or lanthanum tungsten electrode for high current and voltage welding. The cerium-tungsten electrode can also be used for direct current or alternating current, but it is mainly used for direct current welding, because the cerium-tungsten electrode is easy to split during AC welding.

    Compared with thorium tungsten electrodes, cerium tungsten electrodes have the following advantages: thorium tungsten electrodes have slight radiation, and they can only operate under high current conditions. However, the cerium tungsten electrode is a non-radiative welding material and can be operated at low current. Cerium-tungsten electrode is the preferred alternative to thorium-tungsten electrode. In addition, the cerium-tungsten electrode has small cathode spots, low pressure drop, and no combustion, so it is the most widely used in argon arc welding.

    Features:

    1. No radiation, no radioactive pollution;

    2. The electronic work function is low, and the performance of arc starting and arc stabilization is excellent;

    3. The arc can be easily started with a small current, and the arc current is small;

    4. Lower burning rate or evaporation rate, long service life

    5. The cathode spot is small, the pressure drop is small, and it does not burn

    Model: WC20

    Classification:  ANSI/AWS A5.12M-98       ISO 6848

    Main ingredients:

    The main components are tungsten (W) with 97.6~98% of the element content, 1.8-2.2% of cerium (CeO2).

    Packing: 10pc/box

    Welding current: please refer to the table below

    Nib color: gray

    Optional sizes:

    1.0 * 150mm / 0.04 * 5.91 inches 1.0 * 175mm / 0.04 * 6.89 inches
    1.6 * 150mm / 0.06 * 5.91 inches 1.6 * 175mm / 0.06 * 6.89 inches
    2.0 * 150mm / 0.08 * 5.91 inches 2.0 * 175mm / 0.08 * 6.89 inches
    2.4 * 150mm / 0.09 * 5.91 inches 2.4 * 175mm / 0.09 * 6.89 inches
    3.2 * 150mm / 0.13 * 5.91 inches 3.2 * 175mm / 0.13 * 6.89 inches

    Weight: about 50-280 grams / 1.8-9.9 ounces

     

    COMPARISON TABLE OF TUNGSTEN ELECTRODE DIAMETER AND CURRENT

    DIAMETER

    DC- (A)

    DC+ (A)

    AC

    1.0mm

    10-75A

    1-10A

    15-70A

    1.6mm

    60-150A

    10-20A

    60-125A

    2.0mm

    100-200A

    15-25A

    85-160A

    2.4mm

    170-250A

    17-30A

    120-210A

    3.0mm

    200-300A

    20-25A

    140-230A

    3.2mm

    225-330A

    30-35A

    150-250A

    4.0mm

    350-480A

    35-50A

    240-350A

    5.0mm

    500-675A

    50-70A

    330-460A

    Please select the corresponding tungsten electrode specifications according to your current use

    Application:

    The cerium tungsten electrodes are suitable for direct current or alternating current welding, especially for rail pipes and small precision parts with the best welding effect under low current. Mainly used for welding carbon steel, stainless steel, silicon copper, copper, bronze, titanium and other materials

     

    Main Characters:

    Model

    Added

    Impurity

    Impurity

    quantity%

    Other

    Impurities%

    Tungsten%

    Electric

    discharged

    power

    Color

    sign

    WC20

    CeO2

    1.8-2.2

    <0.20

    The rest

    2.7-2.8

    Gray


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