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Agglomerated Flux GJ-105
GJ-105

Agglomerated Flux GJ-105

Fluoride-basic type agglomerated flux for surfacing

  • GB/T 5293-2018
  • NB/T 47018.4-2017

Basic Information

  • BASICITY :

    2.2 (basic)

  • DENSITY :

    1.2g/cm³

  • GRAIN SIZE :

    10-60 mesh

  • PACKAGING :

    25 kg plastic valve bags, 500/1000 kg large bags

Application

  • 01GUJIN

    A fluoride-basic sintered flux specifically formulated for submerged arc surfacing and cladding applications, providing excellent alloy recovery and low dilution.

  • 02GUJIN

    When paired with hardfacing wires, suitable for surfacing roller surfaces, mill rolls, continuous casting rolls, and other wear-resistant components in steel mills and mining operations.

  • 03GUJIN

    The high calcium fluoride content provides good slag fluidity and excellent slag release at high deposition rates, ensuring smooth clad surface with uniform hardness.

  • 04GUJIN

    Can be used for both single-layer and multi-layer surfacing. Suitable for circumferential surfacing of rolls, flat surfacing of wear plates, and repair of worn components.

Main constituents

SiO2+TiO2

CaO+MgO

Al2O3+MnO

CaF2

S

P

18-22

33-37

10-20

25-30

<=0.06

<=0.08

Mechanical Properties of Deposited Metal

Application

Wire Type

Surface Hardness

Dilution

Layer

Roll surfacing

Cr-Mo-V

HRC 50-60

<=20%

2-3 layers

Wear plate

High-Cr cast iron

HRC 55-65

<=15%

2 layers

Note

  • Sintered flux for surfacing. Must be dried at 300-350C for 2 hours before use to prevent porosity in the clad layer.

  • Base metal preparation: Clean surfacing area thoroughly, remove all oil, rust, cracks, and fatigue layers. Preheat base metal according to material and hardness requirements.

  • Dilution control: Adjust current, travel speed, and oscillation to control dilution. Multi-layer surfacing required to achieve target hardness and chemistry.

  • Post-weld treatment: Slow cooling or stress relief may be required depending on base metal and clad alloy. Conduct hardness testing and crack inspection after surfacing.

WHY US

Consistent Quality, Direct Factory Pricing.

  • TECHNOLOGY
    GUJIN

    TECHNOLOGY

    100% batch consistency ensured by our advanced in-house QA lab.

  • EXPERIENCE
    GUJIN
    20
    +

    EXPERIENCE

    20+ years mastering SAW metallurgical synergy for heavy industries.

  • OEM SERVICE
    GUJIN

    OEM SERVICE

    Full OEM empowerment, from custom formulations to private labeling.

  • MANUFACTURING SCALE
    GUJIN

    MANUFACTURING SCALE

    Massive automated capacity to stabilize your bulk supply chain.

  • GLOBAL TRUST
    GUJIN

    GLOBAL TRUST

    Long-term partner to hundreds of industrial conglomerates worldwide.

FAQ

How do you prevent the agglomerated flux from absorbing moisture during long-distance sea freight?

Moisture control is critical for submerged‑arc welding fluxes. Our standard packaging is 25‑kilogram multi‑layer kraft paper bags lined with heavy‑duty moisture‑proof plastic bags. For extreme environments or ultra‑low hydrogen requirements (such as H5 grade), we can also provide custom heavy‑duty aluminium foil vacuum packaging. All goods are stacked on wooden pallets and tightly wrapped with multiple layers of industrial shrink film to ensure 100% dryness upon arrival at the port.

We are fabricating API 5L X70 pipes. Can we use standard neutral fluxes like GJ-301?

No. For High-Grade Oil & Gas pipeline fabrication (such as API X60 to X70), standard neutral fluxes like 301 or active fluxes like 501 are not suitable, as they cannot guarantee the required extreme low-temperature impact toughness. You must use our dedicated pipeline-grade Fluoride-Basic agglomerated flux, GJ-101Q (or GJ-101G), combined with Mo/Ni-alloyed wires (e.g., EA2 or S3Ni1Mo).This combination ensures zero loss of alloying elements and guarantees impact values of ≥27J(or much higher) at -40°C to -50°C.

What is your minimum order quantity (MOQ) and typical delivery time for a 20ft container?

Our standard MOQ for international orders is normally 5 tons per item. For a full 20‑foot FCL container, the loading capacity is usually 24 tons subject to container space constraints, and it can reach 27 tons without pallets. A 40HQ high‑cube container can hold a maximum of 28 tons. Backed by our robust production capacity, we can finish production, quality inspection and packaging within 7‑10 days upon receiving the deposit, and deliver the goods to major Chinese ports such as Qingdao Port or Tianjin Port.

Our workshop wants to save time and energy. Is there a way to use the agglomerated flux directly without the re-baking process?

Yes! We fully understand that re-baking costs time and electricity. For customers who want to skip this step, we highly recommend selecting our Heavy-Duty Aluminum Foil Vacuum Packaging. The flux is vacuum-sealed immediately after high-temperature manufacturing. When you open the bag in your workshop, the flux is in a 100% factory-dry state and can be poured directly into the welding hopper for immediate use.

Our steel plates have light rust and mill scale, and we cannot perfectly sandblast all of them before welding. Which flux can prevent porosity in this situation?

For structural steel with surface impurities like rust, oil, or mill scale, standard neutral or high-basic fluxes will likely cause porosity. You need our GJ-501A (Aluminate-Rutile Active Flux). It features a highly active deoxidizing slag system that offers exceptional tolerance to surface contaminants. This allows you to achieve flawless, X-ray quality welds at high speeds without rigorous pre-weld grinding, significantly boosting your shop floor efficiency.

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