{"id":1428,"date":"2026-05-30T20:52:36","date_gmt":"2026-05-30T17:52:36","guid":{"rendered":"https:\/\/cfc.codev-eg.com\/?page_id=1428"},"modified":"2026-06-03T00:25:12","modified_gmt":"2026-06-02T21:25:12","slug":"aluminum-treatment","status":"publish","type":"page","link":"https:\/\/cfc.codev-eg.com\/tr\/products\/metallurgical-chemicals\/non-ferrous-metal-treatment\/aluminum-treatment\/","title":{"rendered":"Aluminum treatment"},"content":{"rendered":"\t\t
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Division 01 \u2014 Metallurgical \/ Non-Ferrous \/ Aluminium\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Aluminium\nTreatment<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Aluminium treatment is the chemical treatment of molten aluminium and its alloys \u2014 covering, drossing and cleaning fluxes, degassing, grain refinement, and modification \u2014 to remove oxides and dissolved hydrogen, recover metal from dross, and deliver clean, sound castings.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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CFC Egypt manufactures one of the region's most comprehensive aluminium flux ranges from our Sadat City plant. Our EGYFLUX series addresses every stage of the aluminium melting and casting cycle \u2014 protecting the melt surface against oxidation, degassing the bulk metal to remove dissolved hydrogen, recovering metal from dross, cleaning furnace walls, treating specific alloy contaminants such as excess magnesium and alkali metals, and providing mould release for permanent-mould and die-casting tooling. Variant formulations cover sodium-free, fluoride-free, calcium-free, and combined exclusion requirements to match alloy specification, regulatory compliance, and environmental policy.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
\n\t\t\t\t\t\n\t\tRequest a quote\n\t<\/a>\t\t\t\t\t\n\t\tNon-ferrous overview\n\t<\/a>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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01\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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What It Covers\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Aluminium treatment spans twelve product types, each addressing a specific function in the melting, holding, and casting cycle. Detailed product pages for each type are available via the links below.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Covering, Drossing & Cleaning Fluxes<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Multi-function flux powders and granules that protect the melt surface from oxidation, work dross to recover entrapped metal, and reduce suspended oxide inclusions. The workhorse product group for any aluminium melting operation.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Sodium-Free Flux<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Covering and drossing fluxes formulated without sodium compounds \u2014 essential where sodium contamination would over-modify Al-Si alloys or where sodium residues in dross create disposal issues. Suitable for sodium-modified alloys where flux sodium must not add to alloy sodium budget.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Fluoride-Free Flux<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Flux formulations free of fluoride salts \u2014 eliminating the HF fume risk of standard fluoride-bearing fluxes, reducing fume extraction requirements, and simplifying dross disposal by avoiding fluoride-regulated waste. Suited to foundries with strict fume emission limits.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Sodium & Calcium-Free Fluxes<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Specialist fluxes excluding both sodium and calcium \u2014 required where alloy specifications prohibit both elements, or where calcium contamination from flux residues would cause sludge formation or intermetallic compound build-up in the melt.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Fluxes for Alkali Removal<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Reactive flux formulations designed to reduce alkali metal concentrations \u2014 sodium, lithium, and potassium \u2014 in the aluminium melt. Elevated alkali levels cause porosity, loss of mechanical properties, and poor oxide structure. Alkali removal is especially important when processing mixed-source secondary aluminium scrap.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Furnace Wall Cleaning Flux<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Specialist flux applied to furnace refractory walls to dissolve and detach oxide and dross build-up \u2014 the adherent deposits that accumulate above the bath line over time, reducing furnace capacity and introducing contamination into the melt. Regular wall cleaning prevents capacity loss and extends refractory life.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Demagging Flux<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Reactive flux for reducing excess magnesium in the aluminium melt \u2014 essential when processing secondary aluminium with variable Mg content, or when alloy Mg has drifted above specification. Excess Mg causes hot shortness in die casting and difficulty releasing castings; demagging flux reacts with and removes the surplus Mg as slag.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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High-Pressure Die Casting Flux<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Flux formulated specifically for high-pressure die casting (HPDC) furnaces and holding pots \u2014 where the high metal velocity and turbulence during injection demand a clean, oxide-free melt. Reduces oxide films and inclusions that cause surface defects, porosity, and die erosion in HPDC production.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Degassing Flux<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Powder flux that releases gas into the aluminium melt to scavenge dissolved hydrogen. Effective degassing before each pour minimises gas porosity \u2014 the most common internal defect in aluminium castings \u2014 improving pressure tightness, mechanical properties, and x-ray quality of critical castings.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Reclamation of Aluminium from Hot Skimming<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Flux applied to freshly skimmed hot dross to recover the remaining metallic aluminium. Hot dross can contain 30\u201360% entrained metal; reclamation flux, worked into the hot dross immediately after skimming, separates this metal for recovery rather than landfill \u2014 improving overall metal yield and reducing waste disposal cost.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Degassing Tablets<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Pre-measured compact degassing tablets (EGYHEX AL) plunged to the furnace floor using a steel rod \u2014 releasing gas consistently throughout the bath depth. Tablets offer controlled dosing, minimal fume compared with powder degassing, and are particularly suited to smaller induction furnaces, crucible furnaces, and ladles where powder dispersion is impractical.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Mould Release Agent<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Release agents (EGYDYE 10, EGYDYE 88) applied to permanent moulds, gravity-casting dies, and sand cores to prevent aluminium from bonding to the mould surface. Good release chemistry prevents soldering, protects die surfaces from erosion, and maintains casting surface quality over many production cycles without excessive build-up.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Where It's Used\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Aluminium treatment chemistry is required in every foundry and casting plant that melts aluminium alloys \u2014 from primary ingot casters and automotive HPDC cells to secondary aluminium remelters and jobbing gravity foundries.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Automotive Die Casting (HPDC & LPDC)\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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High-pressure die casting of aluminium engine components, structural nodes, and EV battery housings demands extremely clean metal. Any oxide film entrained during injection causes cold-shuts, surface blisters, and porosity that fail post-cast x-ray or pressure testing. HPDC flux, degassing, and covering chemistry \u2014 applied in the holding furnace before each shot \u2014 are critical process controls for automotive quality levels.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Gravity & Low-Pressure Permanent Mould\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Gravity and low-pressure casting of wheels, cylinder heads, and pump housings uses the same flux and degassing chemistry at the melting furnace, plus mould release agents on the steel die surfaces. Release agent selection \u2014 water-based vs solvent-based, dilution rate, spray pattern \u2014 directly affects die temperature, casting release, and surface appearance. CFC EGYDYE release agents are formulated for aluminium permanent-mould applications.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Secondary Aluminium Remelting\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Remelters processing scrap aluminium face the full range of melt chemistry challenges: variable alloy composition, elevated Mg and alkali levels, high dross generation, and furnace wall build-up. CFC's complete aluminium flux range \u2014 covering, drossing, alkali-removal, demagging, furnace wall cleaning, and reclamation fluxes \u2014 addresses each of these issues systematically, improving metal recovery and bringing recycled alloys back within specification.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Sand & Shell Casting of Aluminium\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Aluminium sand castings \u2014 pump housings, gearbox casings, marine components, and prototype parts \u2014 require the same melt preparation as die castings but with greater design freedom for complex geometries. Degassing and covering flux treatment at the holding furnace removes hydrogen before the pour into sand or shell moulds, where gas cannot easily escape through the mould face. Proper melt treatment is the first line of defence against porosity in gravity sand-cast aluminium.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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CFC Aluminium Treatment Products\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Our full EGYFLUX aluminium series and supporting products \u2014 covering, drossing, degassing, sodium-free, fluoride-free, calcium-free, alkali-removal, demagging, furnace wall cleaning, HPDC, hot skimming reclamation, degassing tablets, and mould release agents. All manufactured in Sadat City, Egypt.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Frequently Asked Questions\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Technical questions on aluminium flux treatment, degassing, and mould release answered plainly. For application-specific recommendations, contact our technical team.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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What is aluminium treatment in foundry practice? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Aluminium treatment is the chemical treatment of molten aluminium and its alloys \u2014 covering, drossing and cleaning fluxes, degassing, grain refinement, and modification \u2014 to remove oxides and dissolved hydrogen, recover metal from dross, and deliver clean, sound castings. The treatment cycle typically begins once the charge is molten: the melt surface is covered with a flux, the bulk metal is degassed, dross is removed, the furnace walls are cleaned periodically, and specific contaminants such as excess magnesium or alkali metals are treated before pouring. On the mould side, release agents are applied to permanent dies and gravity moulds to prevent aluminium bonding to the die surface.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t
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What are covering, drossing, and cleaning fluxes for aluminium? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Covering fluxes form a protective molten blanket on the aluminium bath surface, preventing oxidation by separating the metal from the atmosphere. Drossing fluxes are worked into the dross layer with a tool to separate entrapped metal droplets from the oxide mass, allowing the metal to drain back into the furnace and increasing metal recovery. Cleaning fluxes penetrate below the surface to reduce suspended oxide inclusions and improve melt cleanliness. Many CFC EGYFLUX products combine two or more of these functions in a single formulation, providing economy of application while addressing multiple melt quality concerns simultaneously.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t
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How is aluminium degassed, and which CFC product should I use? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Aluminium is degassed by introducing gas into the melt \u2014 either through a reactive degassing flux powder (EGYFLUX 400) spread or plunged into the melt, or through pre-measured degassing tablets (EGYHEX AL) plunged to the furnace floor. The gas released nucleates bubbles throughout the bath, which scavenge dissolved hydrogen as they rise and release it at the surface. Tablets (EGYHEX AL) offer precise dosing and low fume, making them the preferred choice for smaller furnaces and crucible operations. Powder (EGYFLUX 400) is typically more economical for large reverberatory or induction furnaces where dispersion across a large bath area is required. Both are used before each pour on castings with gas porosity requirements.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t
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What is the difference between sodium-free and fluoride-free aluminium flux? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Sodium-free flux (EGYFLUX 700, EGYFLUX G 700) contains no sodium compounds, which is important when processing alloys where sodium would cause over-modification of the Al-Si eutectic, or where sodium in dross creates waste classification difficulties. Fluoride-free flux (EGYFLUX 600) contains no fluoride salts \u2014 eliminating fluoride fume risks during application and simplifying waste dross disposal since fluoride-bearing dross may require specialist treatment under environmental regulations. Sodium-and-calcium-free flux (EGYFLUX 206) excludes both elements for the most sensitive alloy specifications. The right variant depends on your alloy grade, furnace type, and applicable environmental legislation.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t
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What is demagging flux and when is it needed? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Demagging flux (EGYFLUX 100) removes excess dissolved magnesium from an aluminium melt. Magnesium above the alloy specification limit causes hot shortness and increased porosity in die casting, and makes melt handling more difficult. This situation arises when processing variable-composition secondary aluminium scrap, or when the alloy Mg level drifts upward through evaporation loss of other elements or contamination from high-Mg charge material. The demagging flux reacts with dissolved Mg to form a magnesium compound that can be skimmed from the bath as slag, bringing the Mg level back within specification. It is an essential tool for secondary aluminium foundries operating with mixed-source scrap.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t