Weldynasty SJ101 Fluorine-Basic Sintered Flux with Stable Arc & Easy Slag Removal
Weldynasty SJ101 is a fluorine-basic sintered flux designed for high-quality, reliable submerged arc welds. It delivers exceptional arc stability and superior slag detachability, producing clean, aesthetically pleasing welds with outstanding low-temperature impact toughness in the deposited metal.
Key Advantages
Versatile Power Supply: Compatible with both AC and DC (electrode positive for DC).
Excellent Bead Appearance: Creates smooth, visually superior weld seams.
Enhanced Toughness: Ensures high impact resistance of the weld metal, even at low temperatures.
Easy Slag Removal: Saves time and effort with effortless slag detachability.
Broad Application: Ideal for multi-wire, tandem, narrow gap, and double-sided single-pass welding.
Specifications
| Item | Specification |
|---|---|
| Type | Fluorine-Basic Sintered Flux |
| Standard | AWS A5.17 F6A0-EM12 / F7A4-EH14 |
| Basicity | ~1.8 |
| Particle Size | 10–60 mesh |
| Compatible Wires | AWS A5.17 EM12, EM12K, EH14, and other compatible low-alloy wires |
| Equipment | Standard submerged arc welding machines and tractors |
Usage Instructions / Operating Notes
Storage
Store in a dry, sealed environment. Keep the original packaging closed until use.
Avoid moisture exposure, which can cause porosity and hydrogen cracking.
Before Use
If the flux has absorbed moisture, dry it at 300–350°C for 1–2 hours before use.
Remove rust, oil, and moisture from the workpiece surface for best weld quality.
Welding
Use with compatible SAW wires such as EM12, EM12K, or EH14.
Suitable for AC or DC (electrode positive) power supply.
Maintain a proper flux layer to fully cover the arc and weld pool.
After Use
Recycle or properly dispose of unused flux. Do not mix with other flux types.
Clean slag from the weld bead after cooling.
Applications / Ideal For
Shipbuilding: Welding low-alloy structural steels in hull and marine structures.
Boiler and Pressure Vessels: Critical welds requiring high toughness and reliability.
Pipeline Construction: Suitable for multi-layer and double-sided single-pass welding.
General Heavy Fabrication: Multi-wire, tandem, and narrow-gap submerged arc welding.
FAQ
Q: What is the difference between sintered flux and fused flux?
A: Sintered flux is manufactured at lower temperatures, allowing alloying elements and deoxidizers to be added. It typically offers better toughness and crack resistance than fused flux, but is more sensitive to moisture.
Q: What wires are compatible with SJ101?
A: It is compatible with AWS A5.17 EM12, EM12K, EH14, and other low-alloy submerged arc welding wires.
Q: Can SJ101 be used with both AC and DC power?
A: Yes. It supports both AC and DC (electrode positive for DC).
Q: Does the flux need drying before use?
A: If stored in a dry environment and the packaging is intact, drying is usually unnecessary. If moisture absorption is suspected, dry at 300–350°C for 1–2 hours.
Q: What positions is SJ101 suitable for?
A: It is designed for flat and horizontal submerged arc welding, including multi-layer, double-sided single-pass, multi-wire, tandem, and narrow-gap applications.
Q: How should the flux be stored?
A: Keep it in a dry, sealed environment in its original packaging. Avoid moisture, which can cause porosity and hydrogen-induced cracking.
Q: What is the basicity of SJ101?
A: Approximately 1.8, making it a fluorine-basic flux with good toughness and bead appearance.