Aluminium Strip
The raw materials in aluminum strips are mainly pure aluminum, hot-rolled aluminum coils, or aluminum alloy cast-rolled aluminum coils. Longitudinal slitting is performed in the slitting machine, and the aluminium strips of different widths formed after slitting can play their respective roles in actual operations. Those raw materials are rolled into different thicknesses and widths of aluminum coils in a cold mill. Then, put the aluminium coil into the slitting machine, forming different widths of the aluminum strips, which can operate in different industries.
Advantages of Aluminium Strip
Lightweight
Aluminum strip is very lightweight, with a density of only 2.7 g/cm3. This makes it a good choice for applications where weight is a concern, such as in the manufacture of beverage cans and other lightweight containers.
Corrosion Resistance
Aluminum strip is resistant to corrosion, making it a good choice for applications where it will be exposed to the elements. This is due to the formation of a thin, protective oxide layer on the surface of the aluminum strip.
Formability
Aluminum strip is easy to form, making it a good choice for applications where complex shapes are required. This is because aluminum strip has a relatively high ductility, which means that it can be stretched and bent without breaking.
Strength
Aluminum strip is strong enough for many applications, but it is also relatively soft, making it easy to work with. This makes it a good choice for applications where both strength and formability are important, such as in the manufacture of automotive parts and machinery.
Why Choose US
Our Factory
Henan Everwin is located in Zhengzhou city, Henan province, China. We are a company dedicated to exporting aluminum rolled products, committed to providing high-quality and diversified aluminum rolled products to global customers.
Professional Team
Since the establishment of the company, we have always adhered to the business philosophy of "quality first, customer first". We have a professional team in the production, research and sales department, able to provide personalized product solutions according to customer needs.
Our Product
Our main products are aluminium sheet, aluminium coil, aluminium foil, aluminium circle and aluminium strip, which are widely used in various industries such as construction, transportation, electronics, and packaging. We strictly control product quality from raw material procurement to production processes to ensure that every product meets customer requirements and expectations.
Our Service
We can provide one-stop services from production packaging to land and sea transportation, as well as comprehensive product after-sales technical support, providing customers with thoughtful service support throughout the process.
1060 Aluminium Strip
1060 is widely applicated in places where high corrosion resistance and formability are required, but low strength requirements. 1100 is typically used in chemical equipment. For processing parts that require good formability and high corrosion resistance but do not require high-strength components such as chemical products, installation, and storage containers for the food industry, sheet metal fabrications, deep-drawn or spun concave utensils, welded parts, heat exchangers, printing plates, nameplates, reflectors.
1100 Aluminium Strip
1100 aluminum strip has no rigid requirements for high-strength parts, but requires good corrosion resistance and formability in the processing environment. It is mostly used in the processing of devices and storage containers in the food industry, the processing of chemical products, and welding zero parts, heat exchangers, nameplates, reflectors and processing of printing plates, etc., are widely used.
3003 Aluminium Strip
In this type of aluminum strip, cold-worked bars, cold-worked wires, forgings, foils, heat sinks are mainly used in parts with high corrosion resistance, good formability, and good weldability. They can also operate well in industries such as pressure tanks, heat exchangers, chemical equipment, oil conduits, kitchen equipment, aircraft fuel tanks, and reflectors.
3004 Aluminium Strip
This type of aluminum strip is mostly used in the production and storage industry of chemical products, the production of lighting parts, the processing and production of cable ducts and sewers, as well as the building baffles and building processing parts industries, such as building baffles, cable ducts, sewers, various lighting components.
5052 Aluminium Strip
This kind of aluminum strip has high formability, corrosion resistance, corrosion resistance, moderate static strength, and fatigue strength. Therefore, the 5052 aluminum strip is mostly used in manufacturing industries such as aircraft fuel tanks and oil pipes, instrument and street lamp brackets, sheet metal parts for transportation vehicles and ships, and hardware products.
How to Choose The Right Aluminum Strip
Aluminum strip are a new type of environmentally friendly building material product made of high-purity aluminum, which has the characteristics of corrosion resistance. The aluminum strip is an essential material for making insulating glass, so the quality of the aluminum strip is closely related to the use effect of the glass. So how to choose the right and good quality aluminum strip?
Usually, the raw material of aluminum strip is high-purity aluminum, which is made after surface treatment. The aluminum strip is used with insulating glass and has good compatibility. You can choose aluminum strip from the following aspects:
Choose The Exterior Of Aluminum Strip
The hollow aluminum strip is mainly to separate the hollow glass and play an effective supporting role, so the surface of the aluminium strip needs to be flat without obvious oil stains. Besides, the aluminum strip must be straight and cannot be bent.
Choose The Right Type Of Aluminum Strip
Aluminum strip are divided into high-frequency welding aluminum strip and cold drew aluminum strip. Due to the low oxidation resistance of cold-drawn aluminum strip and their unsightly appearance. The cold-drawn aluminum strip is gradually replaced by high-frequency welding aluminum strip. So it is not recommended to buy cold-drawn aluminum strip.
Choose The Right Width Of Aluminum Strip
The width of the aluminum strip on the market is between 5.5mm and 26.5mm, and the appropriate specification should be selected according to the size of the insulating glass. In most cases, the specification of x.5 is more commonly used, such as 5.5A, 8.5A, and 11.5A.
Choose The Right Wall Thickness For Aluminum Strip
Wall thickness refers to the thickness of the inner wall of the aluminum strip, which can be divided into bending and non-bending. The thickness of the unbendable aluminum strip is 0.2mm-0.29mm. The thickness of the bendable aluminum strip is 0.3mm-0.35mm. The thicker the aluminum strip, the less the bending loss.
In addition, the thickness of the aluminum strip is 0.2mm-0.25mm, and the aluminum strip within this specification range is manually operated, which can save costs. Aluminum strip with a thickness of 0.23mm-0.29mm can be used both by hand and by machine. For machines and sheets, it is recommended to use aluminum strip with a thickness of 0.21mm or more. Aluminum strip with a thicker wall have better toughness and are less likely to be damaged by machines.
Choose The Right Height For Aluminum Strip
The height of the aluminum strip is fixed between 5.5mm-7mm. The higher the height, the thicker the aluminum strip. The international standard height of aluminum strip is 7mm with an error of +-0.025mm.
What Are the Uses of Aluminum Strip?
Electrical And Electronics
Aluminum strip is commonly used in electrical conductors, power cables, transformer windings, busbars, and printed circuit boards (pcbs) due to its high electrical conductivity.
Building And Construction
Aluminum strip finds applications in building and construction, including roofing, facades, window frames, doors, and structural components. Its lightweight nature, corrosion resistance, and ease of fabrication make it popular in the construction industry.
Automotive
Aluminum strip is used in the automotive industry for various applications, including heat exchangers, radiator fins, trim components, body panels, and wiring harnesses. Its lightweight nature helps in fuel efficiency and overall vehicle weight reduction.
Packaging
Aluminum strip is used in the production of packaging materials, such as cans, foils, and lids. Its excellent barrier properties against moisture, light, and oxygen make it suitable for preserving the freshness and integrity of food and beverages.
Heat Transfer
Aluminum strip is utilized in heat exchangers, air conditioning systems, and cooling devices due to its high thermal conductivity and lightweight nature.
Reflectors And Solar Applications
The reflective properties of aluminum strip make it suitable for reflectors, lighting fixtures, and solar energy applications, where efficient light reflection and energy conservation are essential.
Five Steps of Aluminum Strip Production
Aluminum sheet and strip refers to the aluminium sheet or strip which is made of aluminium as the main raw material and mixed with other alloy elements. Aluminum sheet and strip is an important basic material for the development of national economy in China. It is widely used in aviation, aerospace, construction, printing, transportation, electronics, chemical industry, food, medicine and other industries.
Flow of aluminium strip production
Melting - Static position - Casting - Homogeneous fire - Hot-rolling - Cold rolling - Finished product annealing - Packaging and warehousing - Casting and rolling
Melting casting
The purpose of melt casting is to produce alloys with high purity and satisfying composition, and to create favorable conditions for casting alloys of various shapes.
Several key parameters in casting process:
- Furnace temperature is generally set at 1050 C during smelting. The material temperature should be monitored during the process, and the metal temperature should not exceed 770 C.
- Slag removal operation at about 735 C. This temperature is favorable for slag-liquid separation.
- Refining generally adopts secondary refining method, primary refining reinforcement refining agent and secondary refining gas refining method.
- Casting should be done in time for 30 min-1 h after static inversion, otherwise refining is needed.
- Ai-Ti-B wires need to be continuously added in the casting process to refine the grain size.
Hot rolling
Hot rolling generally refers to the rolling above the recrystallization temperature of metals. Hardening and softening of metals exist simultaneously in the process of hot rolling. Due to the influence of deformation speed, as long as the recovery and recrystallization process is not enough, there will be some work hardening. The recrystallization of hot rolled metal is incomplete, that is, the recrystallization structure coexists with the deformed structure. Hot rolling can improve the processing properties of metals and alloys and reduce or eliminate casting defects.
Casting rolling
Casting and rolling process: Liquid metal, front box (liquid level control), casting and rolling mill (lubrication system, cooling water), shearing machine, coiler.
The casting and rolling temperature is generally between 680 ~700 C. The lower the better, the more stable the casting and rolling line will stop once a month or more, and the vertical plate will be restored. In the production process, the liquid level of the front box should be strictly controlled to prevent the liquid level from being low. Lubrication uses C powder with incomplete combustion of gas to lubricate, which is also one of the reasons leading to dirty surface of casting and rolling stock. The production speed is generally between 1.5m/min and 2.5m/min. The surface quality of products produced by casting and rolling is generally low, and can not meet the requirements of special physical and chemical properties.
Cold rolling
Cold rolling refers to the rolling mode below the recrystallization temperature. There will be no dynamic recrystallization during the rolling process, and the maximum temperature rises to the recovery temperature. The cold rolling has a work hardening state and a high work hardening rate. Cold-rolled strips have high dimensional accuracy, good surface quality, uniform structure and properties. Products in various states can be obtained by heat treatment. Cold rolling can produce thin strip, but it also has the shortcomings of large energy consumption and more processing passes.
Finishing
Finishing is a processing method to make cold-rolled sheet meet customer requirements, or to facilitate the follow-up processing of products. Finishing equipment can correct defects such as crack edge, oil strip, bad shape and residual stress in hot rolling and cold rolling process. It needs to ensure that no other defects are brought into the production process. There are various finishing equipments, such as cross cutting, longitudinal shearing, stretching and bending, annealing furnace, slitting machine, etc.
What Are the Types of Aluminum Strip Processing Methods
Drawing Process
The process involves degreasing, sanding, and water washing. In the aluminum strip sheet drawing process, a special film technique is used after anodizing treatment. Generally, a stainless steel wire brush or nylon sanding belt with a diameter of 0.1mm is used to create a film layer on the surface of the aluminum strip sheet, giving it a fine and silky appearance. The metal drawing process is increasingly used in the production of aluminum strip sheet products, providing both aesthetics and corrosion resistance.
Etching Process
The process involves grinding with jujube wood carbon to remove grease and scratches, creating a matte surface. Then, a pattern is printed using a screen printing plate, with ink models such as 80-39, 80-59, and 80-49. After printing, the sheet is dried in an oven, sealed at the back with instant adhesive, and the edges are sealed with tape. The sheet then undergoes the etching process. The etching solution for aluminum strip sheet consists of 50% ferric chloride and 50% copper sulfate, mixed with an appropriate amount of water, at a temperature between 15°c to 20°c. During etching, the sheet should be placed flat, and any reddish residue overflowing from the pattern should be removed with a brush. Bubbles will emerge on the aluminum strip surface, carrying away the residue. The etching process takes approximately 15 to 20 minutes to complete.
Electrophoretic Coating Process
The process includes the following steps: Degreasing, hot water washing, water washing, neutralization, water washing, anodizing, water washing, electrolytic coloring, hot water washing, water washing, electrophoresis, water washing, and drying. In addition to the anodized film, a water-soluble acrylic paint film is uniformly applied to the surface of the profile through electrophoresis. This forms a composite film of anodized film and acrylic paint film. The aluminum strip sheet enters an electrophoretic tank with a solid content of 7% to 9%, a temperature of 20°c to 25°c, ph of 8.0 to 8.8, resistivity (20°c) of 1500 to 2500ωcm, voltage (dc) of 80 to 25ov, and current density of 15 to 50 a/m2. The sheet undergoes electrophoresis for 1 to 3 minutes to achieve a coating thickness of 7 to 12μm.
How to Store Aluminum Strip
Store the profiles indoors in a dry and clean place. Store the profiles covered as long as possible. This prevents dirt from coming in contact with the profiles. The profiles should also be protected from splashes occurring during welding and grinding which can produce small spots that are difficult to take away. The place of storage shall be ventilated. Ventilation helps to keep the profiles dry. If the profiles are stored in packages, you should open the packaging on both ends in order to avoid condensation on the profiles. You should also check whether the package is not wet or damaged otherwise.
Corrosion never occurs without water. Crevice corrosion can occur on the surface of untreated profiles if rain water or condensation water collects on adjoining aluminium surfaces, for example during storage or transport. This gives rise to spots, so called white rust, with different surface structure. The spots are very difficult to take away, but they do not affect the strength of the profiles. It is not recommended to store untreated profiles outdoors. The profiles can become discoloured if subjected to the influence of oxygen or moisture. Untreated profiles that have been affected by moisture should be immediately unpacked and wiped off. Store untreated profiles indoors in a dry place at constant temperature to avoid condensation. If you handle untreated aluminium profiles without gloves, they can corrode in those places where you leave your fingerprints. Therefore, always wear gloves when handling the goods.
Surface treated profiles should be cleaned regularly to keep their original appearance. The profiles should be cleaned with neutral cleaning agents. Use solvent on heavily soiled profiles. Never use alkaline agents because surface treated profiles are sensitive to such substances. Do not use detergents with polishing additives and avoid scrubbing as this increases the risk of mechanical damage.
Where the pitting is found only on certain faces of the sample, perhaps just a single face, and a sharp demarcation exists between the pitted area and a satisfactory area, the problem is probably due to corrosive media attacking exposed faces of the sample. A sharp demarcation line between the defect area and a normal area suggests shielding of the affected part by other parts or perhaps one face having been protected by lying on a shelf in storage (face-up, face-down). Pits often tend to run along die lines on extrusions where any natural protective oxide film is at its weakest. This is commonly observed with atmospheric corrosion of mill finish extrusions, particularly air quenched 6063 type extrusions, where the presence of a mixed magnesium oxide - aluminium oxide film on the surface, facilitates and accelerates the corrosion process. This type of corrosion is not readily visible on the mill finish sample, but is revealed by an etching pre-treatment, and can be seen immediately after the etching stage. It is often not detected until the final inspection of an anodized and sealed product. The pitting may only be on one or two faces of an extrusion depending upon its shape and how it has been stored. This type of corrosion cannot be removed by reprocessing. The only remedial action is to strip off the anodic film and then mechanically linish the surface to remove the pits. This is practically impossible on complex shapes and it is often more economic to re-extruded the alloy and ensure that it is handled and stored correctly prior to etching and anodizing.
FAQ
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