Product description

SJ101 Sintered SAW Flux is a fluoride-basic sintered flux with gray-white spherical particles sized 2.0–0.28 mm (10–60 mesh). Compatible with AC/DC power sources, it operates optimally under DC+ polarity. Metallurgically neutral, it minimizes Si/Mn pickup in weld metal. For welding base metals of 430MPa/490MPa/550MPa/620MPa tensile strength grades, such as Q235, Q345, Q460, and Q500 steels. Widely used in engineering machinery, construction equipment, pressure vessels, and steel structures.

Process Advantages:

• Superior arc stability

• Effortless slag removal (no pitting/sticking)

• Aesthetic bead profile

• High low-temperature impact toughness

Specialized Performance:

• 90° fillet joints: Excellent slag peeling & smooth weld transition

• High-current welding (≥800A) at 1.8 m/min: Gas pore resistance with ribbon-like slag detachment

Wire Compatibility & Applications:

Critical Industries:

• Ship hulls

• Boilers & pressure vessels (ASME Sec. VIII)

• Pipelines (API 5L compliance)

• Supports: Multi-pass, double-sided single-pass, tandem-wire, and narrow-gap SAW

Mechanical Performance of Deposit Metal

Chemical Composition (%)

Precautions:

1. Weld surfaces must be cleaned of oil, moisture, rust, and other contaminants prior to welding.

2. Storage conditions require strict moisture-proof measures.

3. Flux must be baked at 300–400°C for 2 hours before welding.

4. Excessive flux height impairs bead appearance.

5. Periodically replenish with fresh flux to prevent poor bead surface quality caused by reused flux.