Refining Flux

Refining Flux for molten aluminum alloys removes oxides, entrapped dross, and hydrogen to stabilize the melt and support consistent casting quality. This aluminum refining flux suits common alloy series and furnace practices. We manufacture reliable, low-fume formulations that separate slag efficiently and help preserve metal yield.

How it works in the melt

The flux wets oxide films and nonmetallic inclusions so they coalesce and float for easier skimming. It also supports hydrogen removal, which reduces gas-related porosity. With cleaner metal, downstream processing is more stable and properties are more repeatable.

Grades and compositions

• General-purpose grade: A balanced chloride–fluoride system for common casting alloys (1xxx, 3xxx, 6xxx) and remelt operations. It aids oxide removal and hydrogen control with easy skimming and low residue.




• Low-fume / low-residue: Formulated for indoor furnaces and tighter environmental controls. These grades reduce smoke and dust while maintaining purification efficiency and limiting melt loss.




• Companion to degassing: Designed to work with degassing treatments and rotary equipment. It promotes inclusion coalescence and improves bubble contact before filtration and casting.

Operating window and dosage

Typical working temperature is 680–780°C, depending on alloy and furnace practice. A common starting dosage is 0.3–1.0 kg per metric ton of melt. Adjust to scrap content, melt condition, and target cleanliness. Allow 5–10 minutes of contact time before dross removal. Verify compatibility for Mg-bearing alloys and fine-tune through trials.

Application and safety

Apply as powder or granules by:

• Manual distribution over the bath with light agitation




• Lance injection with argon or nitrogen




• Integration with rotary degassing to maximize dispersion

Ensure adequate mixing, allow reaction time, and skim thoroughly. Use appropriate PPE, maintain ventilation, and keep furnaces clean and dry.

Measured outcomes

Users typically see fewer inclusions, lower hydrogen levels, smoother metal flow, and fewer pinholes or porosity defects. Cleaner melts support stable mechanical properties and help reduce rework in billet, slab, and foundry casting lines.

Quality and certifications

Established in 1995, we combine in-house R&D, spectral analysis, and controlled furnacing to deliver batches with consistent activity and low residue. Our systems are certified to IATF 16949:2016, ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018. We also contribute to national standards for aluminum alloy additives. Certificates of analysis and lot traceability are available on request.

Packaging and supply

Products are available in moisture-proof bags (e.g., 25 kg), lined drums, and palletized shipments for easy storage and dosing. With four production bases, eight distribution centers, and regional warehouses in Fujian, Jiangsu, Chongqing, and Guangdong, we provide steady supply for domestic and international customers.

Integration with grain refiners and master alloys

Use the melt refiner before AlTiB grain refiners, AlSr modifiers, and master alloys such as AlSi, AlMn, and AlTiB. A clean melt enables effective grain refinement and modification, supporting final properties.

Selection guide

Choose a grade by alloy series (1xxx–7xxx), magnesium content, furnace type, casting method, and environmental requirements. General-purpose grades fit routine melts. Low-fume options suit confined spaces. Companion grades align with rotary degassing and filtration lines. Our technical team can recommend a formulation based on your melt condition and performance targets.

FAQs

• What is the difference between Refining Flux and Degassing Flux? The refiner targets oxides, inclusions, and dross coalescence. Degassing focuses on hydrogen removal, often with inert gas or rotary equipment.




• Will it affect alloy composition? Properly selected grades minimize melt loss and avoid undesirable reactions. Confirm compatibility for Mg-bearing alloys and observe process temperature.




• How do I minimize residue? Use low-residue formulations, ensure adequate dispersion, allow proper reaction time, and skim thoroughly. Keep the furnace clean and dose correctly.

Contact

Discuss your alloy, furnace practice, and target outcomes with our team, or request a quote for trial and validation.