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Degassing Flux

Degassing Flux for Aluminum Casting – Overview


Our degassing flux aids hydrogen removal and inclusion flotation in molten aluminum. It helps reduce porosity and improves surface finish, yield, and mechanical properties. Suitable for primary smelting and remelt operations, it supports stable casting across billets, slabs, sheet, extrusion, and foundry alloys. Consistent results are achieved in both manual and automated processes.


Why Choose Our Degassing Flux


Proven performance backed by R&D and patents


Developed by a manufacturer integrating R&D, production, and sales since 1995. The formulation benefits from extensive patents and recognized innovation awards. Laboratory analysis and controlled trials ensure consistent results from pilot to mass production.


Certified quality and process control


Produced under IATF 16949:2016, ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018. Strict raw material control, stable particle distribution, and traceable batches deliver repeatable melt treatment.


Robust capacity and fast delivery


Four production bases and eight distribution centers enable dependable supply and responsive delivery. Regional warehouses in Fujian, Jiangsu, Chongqing, and Guangdong support just‑in‑time availability.


Trusted by industry leaders


Used by ~300 customers in ~40 countries, including leading aluminum groups. Proven in billet, slab, and foundry environments.


Degassing Flux Product Types and Options


Powder Degassing Flux


The powder disperses rapidly for maximum contact with the melt. It removes hydrogen and coalesces oxides for efficient skimming. Controlled moisture and low fume behavior support clean, repeatable results.


Typical applications and melt conditions


Effective in crucible, reverberatory, and tilting furnaces at common aluminum temperatures; adaptable to alloy windows and casting cycles.


Particle size and packaging options


Optimized particle size improves flow and coverage. Moisture‑protected packaging maintains stability from storage to the melt.


Granular Degassing Flux


Granular form offers controlled feed behavior and reduced dusting, ideal for automated feeders. The formulation targets rapid wetting and uniform distribution to enhance degassing efficiency.


Injection‑grade for rotary systems


Designed for lance or rotary degassing. This grade maintains stable reactivity under gas‑stirred conditions and helps shorten treatment time.


Chlorine‑free and low‑fume options


Variants meet environmental and workplace requirements, balancing hydrogen removal with minimal emissions.


How Degassing Flux Works in Aluminum Melt Treatment


Hydrogen removal and inclusion flotation mechanism


Fine bubbles and active sites strip dissolved hydrogen. Oxide films agglomerate and rise for easy skimming. Casting becomes more predictable with lower porosity.


Usage guidelines and addition methods


Add the material by sprinkling, feeding, or injection after heavy dross is removed. Use gentle agitation to aid dispersion. Dosage depends on melt quality, alloy, and furnace type. Start with a trial range and adjust to target gas levels and cleanliness.


Furnace and process compatibility


Compatible with crucible, reverb, and rotary setups. It supports DC casting, continuous casting, and foundry ladle treatments without disrupting alloy chemistry when conditions are controlled.


Technical Data and Quality Assurance


Consistency and traceability


Each batch undergoes incoming raw material checks and in‑process controls. These ensure uniform activity, moisture control, and predictable flow. Full traceability is maintained from production to delivery.


Typical properties


Tailored base chemistries and additives balance hydrogen removal, oxide capture, and fume behavior. Particle distributions are controlled for even coverage and reactivity.


Compliance and safety


Manufactured under certified environmental and health systems. Use standard PPE, dry tools, and adequate ventilation. Store in a dry area to preserve activity.


Applications and Alloy Coverage


Billet, slab, and sheet production


Supports stable hydrogen control in 1xxx–7xxx series. It improves macrostructure uniformity and helps minimize blister risk for rolling and extrusion.


Foundry and remelt operations


In foundry alloys and recycling streams, the treatment reduces gas pickup and entrained oxides to support consistent feeding and lower scrap.


Synergy with master alloys and grain refiners


Used alongside AlTiB grain refiners and master alloys, it cleans the melt before grain refinement and helps achieve target grain size.


Packaging and Delivery


Packaging formats


Supplied in moisture‑barrier bags and bulk options with batch labels for process control and traceability.


Lead times and distribution


Multiple production bases and regional warehouses enable swift dispatch and reliable replenishment. Contact us to request a quote and scheduling support.


Custom Degassing Flux Formulations


Alloy‑specific tuning


Custom formulations are available for high‑silicon, high‑magnesium, and high‑recycled‑content melts.


Trial support and process optimization


Technical teams provide trial plans, sampling protocols, and guidance on dosage and addition methods.


Category Note – Flux Family


Our flux family includes Degassing Flux and Refining Flux. This page focuses on hydrogen control and inclusion flotation; Refining Flux for broader impurity management is available in the related category.


Related Products


Refining Flux


Used upstream or in tandem for oxide removal and dross conditioning.


Grain Refiner (AlTiB)


Enables fine, uniform grains after gas levels are controlled.


Master Alloys


AlTi, AlB, AlSr, and other master alloys help tune microstructure and properties.


Alloying Metal Tablets


Tablets for Mn, Fe, Cu, Ni, Cr, Ti simplify composition adjustment with low dross.


FAQs about Degassing Flux


What is Degassing Flux?


A melt treatment aid that promotes hydrogen removal and inclusion flotation in molten aluminum.


How to choose between powder and granular?


Choose powder for rapid coverage and manual addition; choose granular for reduced dust and automated feeding.


Are chlorine‑free options available?


Yes. Chlorine‑free variants are available for operations that prioritize low emissions while maintaining effective hydrogen control.

Harbin Dongsheng Metal Co.,Ltd, 
the leading manufacturer of Aluminum alloying element additives,specialize in Alloying metal tablets,Master alloys,Grain refiners,Modifiers,and Fluxes products.

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