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FAQ

Dongying power plant with 0.6mm thick insulation aluminum coil, manufacturers can be divided into small volumes?

How wide is the inside diameter of an aluminum roll; a roll of multiple. Small volume of MOQ is required.

I take an extracurricular aircraft class, and I got the okay to take some old painted sheet aluminum for another project I'm working on. The problem is, what I'm using it for I need bare aluminum. I heard around that air crafts are painted with something that regular (store-bought) paint stripper can't remove. Is this true? I am aware of the fact that stripping something like that will result in a toxic paint sludge, so I've taken precautions for that. I just need to know if heavy-duty paint stripper from Home Depot will do the job. Thanks :)

As above, an automotive shop might be able to help you with the correct stripper. If you can find someone who does aircraft finishing, he might help you. A lot of aviation type finishes (Imron, for example) are used in upper end automotive shops for exclusive finishing. You might get some help there. I would be careful about using ordinary strippers on aircraft aluminium. If your project is not going to fly, you would be safe. You might scratch the finish on your sheet though, getting the old paint off. If your project is going to fly, you need to use the correct process. It seems to me that (some time ago), I have heard of a sandblast process, using crushed walnut shells rather than sand, to remove paint from aircraft. Failing all that, you can try a commercial stripper on a small corner of your aluminium sheet to see what it does. Whatever you do, good luck, and have fun. It sounds to me like you could turn this into a research project all by itself.

To ensure the safety of individuals and prevent accidents, it is crucial to follow several safety precautions when handling aluminum coils. Here are some commonly recommended safety measures: 1. Personal Protective Equipment (PPE): It is essential to wear appropriate safety gear, such as safety goggles, gloves, and aprons, while working with aluminum coils. This protective equipment is necessary to safeguard against potential injuries from sharp edges, cuts, or burns. 2. Proper Handling Techniques: To avoid strain or injury, it is important to use proper lifting techniques while handling aluminum coils. Since these coils can be heavy, lifting with your legs instead of your back and using lifting aids or equipment, if required, is crucial. 3. Secure Storage: To prevent any accidents, it is vital to securely store aluminum coils. Avoid stacking them too high to prevent them from falling or rolling over and causing injuries. 4. Adequate Ventilation: To prevent the buildup of fumes or dust particles, it is important to ensure that the work area has proper ventilation. Aluminum coils may release harmful particles or gases during cutting or processing, making proper ventilation necessary for maintaining a safe working environment. 5. Fire Safety: Due to the high flammability of aluminum, it is extremely important to avoid sparks or open flames near aluminum coils. Using non-sparking tools and refraining from smoking or using flammable materials in the vicinity is crucial. 6. Sharp Edges: It is important to be cautious of sharp edges on aluminum coils as they can cause cuts or lacerations. Handling coils with care and using appropriate tools can help mitigate the risk of injury. 7. Training and Safety Guidelines: All personnel working with aluminum coils should receive proper training on handling procedures and safety guidelines. This includes knowing how to correctly use equipment, understanding emergency procedures, and being aware of any specific hazards associated with aluminum coil handling. 8. Regular Maintenance: Regularly maintaining equipment and tools is necessary to ensure they are in good working condition. This involves inspecting and repairing any damaged or worn-out parts that could pose a safety risk. 9. First Aid and Emergency Response: Keeping a well-equipped first aid kit nearby and ensuring that employees are aware of its location is important. Additionally, establishing clear emergency response protocols and training employees on what to do in case of an accident or injury is crucial. By following these common safety precautions, individuals can minimize the risks associated with working with aluminum coils and create a safer working environment.

In my line of work I see aluminum ground lugs, bonding nuts and straps and also neutral bars eat copper up, especially when exposed to the elements. I know how galvanic reaction works between elements under current load, but my question is why do aluminum and copper seem to hate each other more than any other? And, why would they still be required in usage together per NEC code?

This problem arises between various metals such as iron aluminium where some form of plastic barrier is needed to stop electrochemical reaction taking place where these metals are in long term contact with each other especially in a wet environment. As far as aluminium copper are concerned, the difference in their chemical reactivity is particularly large; aluminium is a highly reactive metal that quickly becomes dull by coating itself with a very thin layer of aluminium oxide whilst copper is one of the least reactive of all metals. However, once covered with a fine layer of aluminium oxide, aluminium will tend not to corrode further. The effect of this is that any copper that does go into solution as a result of contact with weak atmospheric acids will very readily precipitate again as metallic copper onto the aluminium. Reactions similar to those below will readily take place: H2O (rain) + CO2 --- H2CO3 (carbonic acid - carbon dioxide dissolved in rain water) Cu + H2CO3 --- CuCO3 + H2 In an aqueous environment, 3 CuCO3 + 2 Al --- Al2(CO3)3 + 3 Cu Copper aluminium are regularly used because they are relatively low cost when compared with potential alternatives, even with recent commodity price increases. Toughened plastic has replaced copper in certain plumbing applications which have obviously eliminated this galvanic reaction problem.

Yes, aluminum coils can be used for architectural applications. Aluminum is a versatile and lightweight material that offers excellent corrosion resistance, making it suitable for various architectural purposes. Aluminum coils can be used for exterior cladding, roofing, facades, and even interior applications like ceilings and wall panels. The coils can be easily formed, cut, and shaped, allowing for flexibility in design and creative architectural solutions. Additionally, aluminum coils can be coated with various finishes, such as paint or anodized coatings, to provide enhanced aesthetics and durability. Overall, aluminum coils are a popular choice in the architectural industry due to their versatility, durability, and aesthetic appeal.

The lifespan of an aluminum coil can differ depending on several factors, including the quality of the aluminum, the environment it encounters, and the level of maintenance and care it receives. Generally, aluminum coils are known for being durable and having a long lifespan. Typically, a properly installed and well-maintained aluminum coil can endure for 15 to 30 years. However, it is essential to note that this is merely an average estimation, and some coils may last even longer if properly cared for. Various elements can impact the longevity of an aluminum coil, such as exposure to severe weather conditions like extreme heat, cold, or humidity, as well as exposure to corrosive substances or chemicals. Consistently cleaning and maintaining the coil, including the removal of debris and addressing any signs of damage or wear, can also assist in extending its lifespan. To summarize, the average lifespan of an aluminum coil usually ranges from 15 to 30 years, but it is crucial to consider multiple factors that can influence its durability. Regular maintenance and appropriate care can significantly prolong the lifespan of an aluminum coil.

The elongation values of aluminum coils can vary based on the specific alloy and temper of the aluminum. Generally, aluminum coils possess exceptional elongation characteristics, enabling them to undergo stretching or deformation without breaking. To illustrate, the frequently utilized alloy 3003-H14 typically exhibits an elongation value of approximately 20-30%. This implies that the aluminum coil can stretch up to 20-30% of its original length before reaching the point of fracture. Conversely, high-strength alloys such as 7075-T6 possess lower elongation values, typically ranging from 9-13%. These alloys are specifically designed for applications where strength is of utmost importance, albeit at the expense of sacrificing some elongation properties. It is worth noting that elongation values can also be influenced by the processing and treatment methods employed on the aluminum coils. For instance, annealing or heat treatment can enhance the elongation properties of specific alloys. In conclusion, the elongation values of aluminum coils can span from 9% to 30%, depending on the alloy, temper, and processing methods utilized.

Aluminum coils are processed for further fabrication through a series of steps to transform them into various products. The first step is typically uncoiling the coil to separate it into individual sheets or strips. This can be done manually or through an automated process. Next, the coils undergo a surface cleaning process to remove any dirt, oil, or other contaminants. This is important to ensure proper adhesion and surface finish in the subsequent fabrication steps. The cleaning process may involve chemical treatments, rinsing, or mechanical brushing. After cleaning, the coils are often subjected to a pre-treatment process, such as chemical conversion coating or anodizing. These treatments improve the surface properties of the aluminum, providing better corrosion resistance, enhanced adhesion for coatings, and improved paint adhesion. Once the pre-treatment is complete, the coils are ready for fabrication. This can involve various techniques such as cutting, bending, stamping, or roll forming. Cutting can be done through shearing, sawing, or laser cutting, depending on the required dimensions and accuracy. Bending and forming are commonly used to shape the aluminum coils into desired profiles or structures. This can be achieved through press brakes, roll forming machines, or specialized bending equipment. Stamping is another popular method of fabrication, where the coils are pressed into specific shapes using dies and punches. This technique is commonly used in the production of automotive parts, household appliances, and electronics. Once the desired fabrication is complete, the coils may undergo additional surface treatments or coatings to provide protection or enhance their appearance. This can include painting, powder coating, or applying protective films. In conclusion, aluminum coils are processed for further fabrication through a series of steps including uncoiling, surface cleaning, pre-treatment, cutting, bending, stamping, and surface treatments. These processes allow for the transformation of the coils into various products with the desired properties and characteristics.