Magnesium Depletion Flux for Aluminum Alloys

Magnesium removal flux for aluminum alloys is a functional additive specifically designed for aluminum alloy smelting processes. Its core function is to precisely reduce the excessive magnesium content in molten aluminum, while effectively removing oxide inclusions and providing degassing and purification. The dosage can be calculated based on the difference between the actual and target alloy composition, combined with the total weight of molten aluminum. The specific formula is: (Original magnesium content % - Required magnesium content %) × Aluminum molten weight × 6 kg. It is recommended for use within a melt temperature range of 710–740℃. Each bag is individually packaged in 5 kg portions for easy on-site application and precise dosing. This flux provides an efficient and controllable solution for fine-tuning aluminum alloy composition and purifying the melt.

Key Advantages

Precise and Controllable Magnesium Reduction Capacity: Based on a well-defined mathematical formula, operators can quickly calculate the precise amount of flux needed (6 kg per ton of aluminum for every 1% reduction in magnesium content) by combining the difference between the actual magnesium content measured before smelting and the target magnesium content required by the process, along with the total weight of aluminum melted in a single furnace. This avoids waste or insufficient addition, significantly improving the success rate of composition control.

Multiple Effects in One Flux, Simplified Process: During the simultaneous reduction of magnesium content, this flux actively adsorbs and separates oxide inclusions (such as Al₂O₃, MgO, etc.) in the melt, while also degassing, reducing the dissolution of harmful gases such as hydrogen in the molten aluminum. This achieves a three-step process of "magnesium reduction + impurity removal + degassing," helping to shorten smelting time.

Strong Temperature Adaptability: The product is designed to perform optimally within the common aluminum alloy smelting temperature window of 710–740℃, requiring no additional furnace temperature adjustments or changes to existing process specifications, making it easy to integrate into existing production processes.

Convenient Packaging and Feeding: Standardized 5 kg/bag packaging is suitable for precise weighing in small smelting furnaces and for multi-bag combination feeding in large smelting furnaces. The sealed packaging facilitates moisture protection, storage, and on-site management.

Product Applications: Composition Correction for Excessive Magnesium Content in Aluminum Alloys: Widely applicable to situations where the magnesium content is too high in wrought aluminum alloys (such as 6063, 6061, etc.) and cast aluminum alloys (such as A356, ZL102, etc.) due to raw material ratio deviations or the inclusion of recycled materials during production. Using this flux can safely and efficiently reduce the magnesium content to the target range, avoiding the scrapping or downgrading of the entire furnace of molten aluminum.

Improved Melt Purity: For high-end aluminum products requiring high purity (such as aerospace aluminum materials, automotive wheels, 5G communication housings, etc.), this flux not only solves the magnesium content problem but also simultaneously removes oxide films and non-metallic inclusions, improving the fluidity and feeding capacity of molten aluminum, and reducing casting porosity and slag inclusion defects.

Also functions as an auxiliary degassing agent: When a dedicated rotary degassing device is unavailable on-site or supplementary degassing is required, this flux can serve as an auxiliary degassing agent, reducing the hydrogen content in the melt and further improving the density and mechanical properties of the aluminum.

Suitable for various types of smelting equipment: This product can be used normally in resistance furnaces, gas furnaces, and induction furnaces, as long as the operating temperature is controlled within the range of 710–740℃. It is also suitable for in-furnace processing in centralized melting furnaces and crucible furnaces.