WD-SJ68 Sintering flux for submerged arc welding


WD-SJ68 is an aluminum-alkali type sintering flux with an alkalinity of about 2.4. It has the appearance of gray-black spherical particles of 10-60 mesh (2.0-0.28mm).

Subclassification:

· High Strength Steel


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  • Product description
    • Commodity name: WD-SJ68 Sintering flux for submerged arc welding
    • Commodity ID: 1057227597315661824

    WD-SJ68 is an aluminum-alkali type sintering flux with an alkalinity of about 2.4. It has the appearance of gray-black spherical particles of 10-60 mesh (2.0-0.28mm).

    Standard:

    GB/T5293  S55A3AB-SU4M32  AWS A5.23M-97  F8A3-EA3  14174-S A AB 1

     

    Introduction:

    WD-SJ68 is an aluminum-alkali type sintering flux with an alkalinity of about 2.4. It has the appearance of gray-black spherical particles of 10-60 mesh (2.0-0.28mm). This flux has advantages as follows: good moisture absorption resistance; high particle strength; small loose packing density; low flux consumption during welding; the maximum welding current of the flux in the welding process can reach 1200A with arc stability; short slag is formed after welding; narrow gap de-slagging is easy; cylinders do not drip slag in welding small diameter; weld formation is beautiful; pure deposited metal, low SiO2 content; reduce the transition of silicon; has a high low temperature impact toughness. The wire is connected to the positive electrode when DC welding. With the corresponding wire, multi-layer welding, double-sided single-pass welding, multi-wire welding and narrow gap submerged arc welding, etc., can be used to weld higher strength marine steel, pressure vessel steel, pipeline steel, marine platforms and fine grain structural steel for important welded products.

     

    Applications:

    It can be used for butt and fillet welds of ships, pressure vessels, storage tanks, steel structures, bridges, spiral welded pipes and other structures.

     

    Reference value of chemical composition of solder(%):

    SiO2+TiO2

    CaO+MgO

    Al203+MnO

    CaF2

    S

    P

    15.2

    29.8

    38.8

    10.2

    ≤0.06

    ≤0.08

     

    Reference values for mechanical properties of molten metal:

    Mating wire

    Yield strength
    (MPa)

    Tensile strength
    (MPa)

    Elongation
    (%)

    KV2 (J)

    -20°C

    -40°C

    H08MnA

    ≥360

    450-550

    ≥22

    ≥34

    -

    H10Mn2

    ≥400

    480-650

    ≥24

    ≥60

    ≥34

     

    Notice:

    1. The flux shall be baked at 300-350°C for 2 hours before use.

    2. Rust, oil, water and other impurities should be removed from the welded parts before welding.
     

    Key words:
    • flux
    • welding
    • Welding wire

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