Definition of Aluminum coil
Aluminum coil is a continuous sheet of aluminum that has been rolled into a coil shape for convenient storage, pengangkutan, and processing.
These coils are commonly used in industries such as construction, Automotif, Aeroangkasa, elektronik, dan pembungkusan.
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.
Rolling panas
- 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.
Rolling sejuk
- Selepas rolling panas, the aluminum strip is cold rolled at room temperature.
- This process further improves thickness and increases surface finish, kekuatan, dan fleksibiliti.
- It is essential for applications that require precise dimensions and smooth surfaces.
Penyepuhlindapan (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:
- Anodizing (Rintangan kakisan)
- 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
- Akhirnya, the aluminum sheet is tightly rolled into a coil.
- It is packaged and shipped for use in construction, Automotif, elektronik, 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.
Di samping itu, its lightweight nature lowers transportation costs.
Excellent Workability
Highly malleable, aluminum can be effortlessly shaped, dicap, or formed to fit various applications.
Its adaptability makes it a go-to material for manufacturing techniques such as roll forming, lukisan, dan setem.
Rintangan kakisan unggul
Tidak seperti keluli, aluminum naturally resists rust and corrosion, enhancing its durability and longevity in various environments.
Keberkesanan kos
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.
Kekonduksian yang tinggi
As a strong conductor of heat and electricity, aluminum provides 62% of the conductivity of electrical-grade copper when measured by cross-sectional area.
Walau bagaimanapun, when compared by weight, it outperforms copper with 204% of its conductivity.
Common alloy grades, characteristics and uses of aluminum coils
| Gred aloi | Ciri -ciri | Aplikasi utama |
|---|---|---|
| 1050 | Kesucian tinggi (≥99%), excellent electrical/thermal conductivity, strong corrosion resistance, low strength, easy to process. | Chemical containers, packaging materials (Mis., Kerajang aluminium), electrical components, penukar haba. |
| 1060 | Ultra-high purity (≥99.6%), Rintangan kakisan yang luar biasa, 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%), kekuatan sederhana, Formabiliti yang sangat baik, Rintangan kakisan yang baik, Anodizable. | Building roofing/wall panels, radiator automotif, 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%), Rintangan kakisan yang luar biasa (Terutama dalam persekitaran laut), medium strength, easy to weld and process. | Marine/automotive sheet metal, Tangki Bahan Api, marine equipment, Tangki bahan api pesawat, Kapal tekanan. |
| 5083 | High magnesium (4.0-4.9%) + Mangan, ultra-high strength, seawater corrosion resistance, retains toughness at cryogenic temperatures (-196° C.). | Kapal kapal, Platform luar pesisir, liquefied natural gas (Lng) tangki simpanan. |
| 5754 | Lower magnesium content than 5083, superior weldability, excellent stress corrosion resistance, deep-drawable. | Automotive body panels, welded structures, chemical pressure vessels. |
| 6061 | Magnesium + silicon alloyed (0.8-1.2% Mg, 0.4-0.8% Dan), heat-treatable (T6 Temper), kekuatan tinggi, balanced mechanical properties. | Komponen Aeroangkasa, precision machinery parts, rail vehicle structures. |
| 8011 | Iron alloyed (0.5-1.0%), kekuatan sederhana, exceptional processability (ultra-thin foil rolling), strong barrier/sealing performance. | Food/pharmaceutical packaging foil, topi botol, Sirip penukar haba, capacitor foil. |
| 8079 | Besi + silicon alloyed (0.7-1.3% Fe, 0.05-0.3% Dan), higher strength, ultra-high barrier properties, moisture/oxidation resistance. | High-barrier packaging (Mis., vacuum metallized film), moisture-proof laminates, Pembungkusan farmaseutikal. |
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, kekuatan, 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 pembinaan, Automotif, Aeroangkasa, pembungkusan, and electrical industries.
Rintangan kakisan yang sangat baik – 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, Langhe aluminium 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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