Definition of Aluminum coil
Aluminum coil is a continuous sheet of aluminum that has been rolled into a coil shape for convenient storage, trasporto, and processing.
These coils are commonly used in industries such as construction, automobile, aerospaziale, elettronica, e imballaggio.
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.
Rotolamento caldo
- 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.
Rotolamento a freddo
- Dopo la rotolamento caldo, the aluminum strip is cold rolled at room temperature.
- This process further improves thickness and increases surface finish, forza, e flessibilità.
- It is essential for applications that require precise dimensions and smooth surfaces.
Ricottura (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:
- Anodizzante (Resistenza alla corrosione)
- 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
- Finalmente, the aluminum sheet is tightly rolled into a coil.
- It is packaged and shipped for use in construction, automobile, elettronica, 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.
Inoltre, its lightweight nature lowers transportation costs.
Excellent Workability
Highly malleable, aluminum can be effortlessly shaped, timbrato, or formed to fit various applications.
Its adaptability makes it a go-to material for manufacturing techniques such as roll forming, disegno, e timbratura.
Resistenza alla corrosione superiore
A differenza dell'acciaio, aluminum naturally resists rust and corrosion, enhancing its durability and longevity in various environments.
Costo-efficacia
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.
Alta conducibilità
As a strong conductor of heat and electricity, aluminum provides 62% della conduttività del rame per uso elettrico misurato in base all'area della sezione trasversale.
Tuttavia, se confrontato in peso, supera il rame con 204% della sua conduttività.
Gradi di leghe comuni, caratteristiche ed usi dei coils in alluminio
| Grado di lega | Caratteristiche | Applicazioni primarie |
|---|---|---|
| 1050 | Elevata purezza (≥99%), eccellente conducibilità elettrica/termica, forte resistenza alla corrosione, bassa resistenza, facile da elaborare. | Contenitori chimici, Materiali di imballaggio (PER ESEMPIO., foglio di alluminio), componenti elettrici, scambiatori di calore. |
| 1060 | Purezza ultraelevata (≥99,6%), Eccezionale resistenza alla corrosione, buona duttilità nella tempra morbida, conduttività vicino all'alluminio puro. | Attrezzature resistenti alla corrosione, materiali conduttivi, decorazione architettonica, contenitori per l'industria alimentare. |
| 3003 | Legato al manganese (1.0-1.5%), forza moderata, Ottima formabilità, Buona resistenza alla corrosione, anodizzabile. | Pannelli per coperture/pareti di edifici, radiatori automobilistici, stoviglie, componenti di refrigerazione. |
| 3105 | Aggiunti manganese e magnesio, resistenza leggermente superiore a 3003, buona resistenza alla fatica, adatto alla superficie per i trattamenti. | Rivestimento architettonico, persiane, interni del veicolo, parti generali di fabbricazione. |
| 5052 | Lega di magnesio (2.2-2.8%), Resistenza alla corrosione eccezionale (Soprattutto negli ambienti marini), forza media, facile da saldare e lavorare. | Lamiere navali/automobilistiche, serbatoi di carburante, marine equipment, serbatoi di carburante dell'aeromobile, vasi a pressione. |
| 5083 | High magnesium (4.0-4.9%) + manganese, ultra-high strength, seawater corrosion resistance, retains toughness at cryogenic temperatures (-196° C.). | Scafi di navi, offshore platforms, liquefied natural gas (GNL) serbatoi di stoccaggio. |
| 5754 | Lower magnesium content than 5083, superior weldability, excellent stress corrosion resistance, deep-drawable. | Automotive body panels, welded structures, chemical pressure vessels. |
| 6061 | Magnesio + silicon alloyed (0.8-1.2% Mg, 0.4-0.8% E), heat-treatable (Temperatura T6), alta resistenza, balanced mechanical properties. | Componenti aerospaziali, precision machinery parts, rail vehicle structures. |
| 8011 | Iron alloyed (0.5-1.0%), forza moderata, exceptional processability (ultra-thin foil rolling), strong barrier/sealing performance. | Food/pharmaceutical packaging foil, tappi di bottiglia, pinne di scambiatore di calore, capacitor foil. |
| 8079 | Ferro + silicon alloyed (0.7-1.3% Fe, 0.05-0.3% E), higher strength, ultra-high barrier properties, moisture/oxidation resistance. | High-barrier packaging (PER ESEMPIO., vacuum metallized film), moisture-proof laminates, Packaging farmaceutico. |
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, forza, 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 costruzione, automobile, aerospaziale, confezione, and electrical industries.
Eccellente resistenza alla corrosione – 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, rendendoci una scelta affidabile per gli acquirenti globali.
Con anni di esperienza e dedizione alla soddisfazione del cliente, Langhe alluminio è il tuo fornitore di riferimento per premium aluminum coils in Cina. Contattaci oggi per saperne di più sui nostri prodotti e servizi!
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