Definition of Aluminum coil
Aluminum coil is a continuous sheet of aluminum that has been rolled into a coil shape for convenient storage, transport, and processing.
These coils are commonly used in industries such as construction, automobile, aérospatial, électronique, et emballage.
Aluminum coils come in various alloys, thicknesses, and coatings, depending on their intended application.
Aluminum coil production process
Aluminum coil can be produced from aluminum ingots or other forms of raw aluminum (called cold rolling or direct cast) or from a smelting process directly through rolling (called continuous cast).
Bauxite Mining and Alumina Refining
- The process starts with bauxite, the main raw material for aluminum.
- Bauxite is refined using the Bayer process to extract alumina (Al₂o₃).
Aluminum Smelting
- Alumina is converted into pure aluminum through the Hall-Héroult process (electrolytic reduction).
- The process takes place in an electrolytic cell using high voltage electricity and carbon electrodes.
Casting into Ingots
- Molten aluminum is cast into large ingots, slabs, or blooms.
- These are the raw materials for the rolling process.
Roulement chaud
- Aluminum sheet is heated to about 400–500°C (750–930°F).
- It passes through a rolling mill, where its thickness is reduced and its length is increased.
- This process enhances the mechanical properties of the metal.
Roulement froid
- Après le roulement chaud, the aluminum strip is cold rolled at room temperature.
- This process further improves thickness and increases surface finish, force, et la flexibilité.
- It is essential for applications that require precise dimensions and smooth surfaces.
Recuit (optional)
- Aluminum coils can be annealed (heat treated) to soften them and relieve internal stresses.
- This step depends on the desired mechanical properties.
Surface treatment and coating (if required)
Aluminum coils can be given a variety of surface treatments:
- Anodisation (résistance à la corrosion)
- Paint or coating (for decorative or protective finishes)
- Embossed (to add texture)
Slitting and cutting
- Aluminum coils are cut into narrower strips or sheets based on customer requirements.
Coiling and packaging
- Enfin, the aluminum sheet is tightly rolled into a coil.
- It is packaged and shipped for use in construction, automobile, électronique, and other industries.
Why Choose Aluminum over Other Metals?
Lightweight Advantage
Aluminum’s standout feature is its low weight compared to materials with similar properties.
This makes it a preferred choice in industries like automotive and aerospace, where reducing overall weight is crucial.
En plus, its lightweight nature lowers transportation costs.
Excellent Workability
Highly malleable, aluminum can be effortlessly shaped, timbré, or formed to fit various applications.
Its adaptability makes it a go-to material for manufacturing techniques such as roll forming, dessin, et tamponner.
Résistance à la corrosion supérieure
Unlike steel, aluminum naturally resists rust and corrosion, enhancing its durability and longevity in various environments.
Rentabilité
Compared to alternatives like copper, aluminum offers a more budget-friendly option without compromising on performance, helping manufacturers manage costs efficiently.
Eco-Friendly and Recyclable
Aluminum’s recyclability makes it an environmentally sustainable choice, as it can be reused repeatedly, minimizing waste and resource consumption.
Conductivité élevée
As a strong conductor of heat and electricity, aluminum provides 62% of the conductivity of electrical-grade copper when measured by cross-sectional area.
Cependant, when compared by weight, it outperforms copper with 204% of its conductivity.
Common alloy grades, characteristics and uses of aluminum coils
| Note d'alliage | Caractéristiques | Applications primaires |
|---|---|---|
| 1050 | Pureté élevée (≥99%), excellent electrical/thermal conductivity, strong corrosion resistance, low strength, easy to process. | Chemical containers, packaging materials (Par exemple, feuille d'aluminium), electrical components, échangeurs de chaleur. |
| 1060 | Ultra-high purity (≥99,6%), résistance à la corrosion exceptionnelle, good ductility in soft temper, conductivity near pure aluminum. | Corrosion-resistant equipment, conductive materials, architectural decoration, food industry containers. |
| 3003 | Manganese alloyed (1.0-1.5%), force modérée, excellente formabilité, Bonne résistance à la corrosion, anodisable. | Building roofing/wall panels, radiateurs automobiles, kitchenware, refrigeration components. |
| 3105 | Manganese and magnesium added, slightly higher strength than 3003, good fatigue resistance, surface-friendly for treatments. | Architectural cladding, shutters, vehicle interiors, general fabrication parts. |
| 5052 | Magnesium alloyed (2.2-2.8%), Résistance à la corrosion exceptionnelle (surtout dans les environnements marins), medium strength, easy to weld and process. | Marine/automotive sheet metal, réservoirs de carburant, marine equipment, Réservoirs de carburant des avions, vaisseaux de pression. |
| 5083 | High magnesium (4.0-4.9%) + manganèse, ultra-high strength, seawater corrosion resistance, retains toughness at cryogenic temperatures (-196° C). | Coque, plates-formes offshore, liquefied natural gas (GNL) réservoirs de stockage. |
| 5754 | Lower magnesium content than 5083, superior weldability, excellent stress corrosion resistance, deep-drawable. | Automotive body panels, welded structures, chemical pressure vessels. |
| 6061 | Magnésium + silicon alloyed (0.8-1.2% Mg, 0.4-0.8% Et), heat-treatable (T6), forte résistance, balanced mechanical properties. | Composants aérospatiaux, precision machinery parts, rail vehicle structures. |
| 8011 | Iron alloyed (0.5-1.0%), force modérée, exceptional processability (ultra-thin foil rolling), strong barrier/sealing performance. | Food/pharmaceutical packaging foil, bouchons de bouteille, nageoires d'échangeur de chaleur, capacitor foil. |
| 8079 | Fer + silicon alloyed (0.7-1.3% Fe, 0.05-0.3% Et), higher strength, ultra-high barrier properties, moisture/oxidation resistance. | High-barrier packaging (Par exemple, vacuum metallized film), moisture-proof laminates, emballage pharmaceutique. |
China High-Quality Aluminum Coil Supplier – Langhe Aluminum
Langhe Aluminum is a leading China-based aluminum coil supplier, known for providing high-quality aluminum products for various industries.
With a strong commitment to innovation and excellence, Langhe Aluminum specializes in manufacturing premium aluminum coils that meet international standards.
Why Choose Langhe Aluminum?
High-Quality Materials – We use top-grade aluminum to ensure durability, force, and superior performance.
Advanced Manufacturing – Our state-of-the-art production facilities guarantee precision and consistency in every coil.
Wide Range of Applications – Our aluminum coils are widely used in construction, automobile, aérospatial, conditionnement, and electrical industries.
Excellente résistance à la corrosion – Our products undergo advanced treatments to enhance longevity and protect against rust and corrosion.
Customizable Solutions – We offer various sizes, thicknesses, and coatings to meet diverse customer needs.
Competitive Pricing – We provide cost-effective solutions without compromising quality, making us a trusted choice for global buyers.
With years of expertise and a dedication to customer satisfaction, Aluminium Langhe is your go-to supplier for premium aluminum coils in China. Contact us today to learn more about our products and services!
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