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Neodymium arc segment magnets come in various types, each tailored to specific applications and requirements. Thus, understanding the key types will help buyers make the right choice for their needs. Here are the most common types of these magnets:
N35 is the most common type of neodymium arc magnet. Its grade indicates a magnetic energy of 1.25 MG.Oe (Measured in Mega Gauss Oersteds). Thus, it provides a very strong magnetic pull because of the large amount of neodymium that the segment is made of. This magnet grade is suitable for general-purpose applications, such as electric motors. Other suitable applications include magnetic holders and medical equipment.
N38 magnets are even stronger than N35 (1.3 MG.Oe) due to their large neodymium content. This makes them useful in machines where very strong magnetism is a must. These magnets are often used in large electric motors, generators, loudspeakers, and holding devices. Companies should consider N38 magnets when seeking high performance in space-limited designs.
N42 arc magnets are stronger than N35 (1.40 MG.Oe) and N38 segments (1.30 MG.Oe). The strength is due to the higher neodymium content. This makes them suitable for electric motors, generators, and loudspeakers. Large neodymium arc magnets like this one are also used in magnetic separators and hoists. So, these are great for companies who need powerful magnets for industrial uses.
Like N42, N45 arc magnets have a higher neodymium content for stronger magnetism. They also have a powerful magnetic pull, even in large sizes. Businesses will find these magnets useful in electric motors, generators, speakers, and magnetic separation. Consider N45 magnets when high strength is needed in large-scale industrial applications.
N52 magnets are at the top of the strength scale for neodymium magnets. They have the strongest magnetic force out of all the grades. This makes them ideal for electric motors, MRI machines, and magnetic separation. Companies should consider these very strong magnets for big projects where high magnetism and durability are needed.
The next step after understanding the different magnet grades is choosing the right one. Follow these tips to help make the selection process easier:
The grade of the neodymium arc segment magnet is key in its performance. It usually comes in codes like N35, N42, and so on. These grades show how strong the magnet is. The higher the number, the stronger the magnetic force. So, business owners should pick the right grade based on how much pull they need in their specific tasks.
Neodymium magnets are prone to corrosion, which affects their longevity. The right coating increases the segment's life. Common options are nickel, copper, epoxy, and gold. Nickel offers two-in-one protection: corrosion resistance and a shiny look. Copper works as a superconductor for magnets used in scientific work. For basic protection, epoxy coating is an affordable choice. As for gold, it is mainly used for decorative purposes.
The curved arc of the neodymium arc segment magnet must fit the specific surfaces in the task at hand. These segments often come in angles like 30°, 60°, 90°, or 180°. The arc curve affects how well the magnet sticks and how evenly the force is spread out. Buyers should pick a magnet with a curve that fits tightly to the surfaces for the best contact and bond.
The strength of the neodymium arc segment magnet is vital for its overall performance. It does not just refer to magnetic strength but also to pull force, remanence, coercive force, and the energy product. All these play a role in how the magnet interacts with other objects. So, it is important for business owners to consider the strength of the magnet. This ensures that they get the right segments for their applications.
The size of the neodymium arc segment magnet also impacts how it will perform. Larger segments create stronger magnetic fields. But they are also more difficult to fit into space-limited designs. Meanwhile, smaller segments are easier to install but may not provide enough magnetic force for high-demand tasks. Buyers should consider both factors when determining the right size for the magnets.
These segment magnets have diverse industrial uses. The key to their popularity is their strong magnetic power. Here are their most common uses:
Neodymium magnets boost electric motors by making them spin faster and creating more power. In generators, they help produce energy by increasing output. So, these magnets are essential to electric cars, wind turbines, and more, making them flip faster. Their strength makes machines work better while using less power.
Magnetic separators pull out tiny metal bits from materials. Neodymium magnets in these tools provide the strong pull needed to attract small metal scraps that other separators might miss. The magnets help keep the processed materials pure and safe from unwanted metal remains. This ensures quality in steel, food, and mining industries, where even small pieces can cause trouble.
Magnetic hoists and carriers use neodymium magnets to pick and move heavy metal scraps. The strong magnets can lift larger pieces than weaker ones, making them useful for managing scrap piles and optimizing recycling operations. Their strength lets the equipment handle more weight with less effort, speeding up the process. These magnets also cut down on the use of hooks and chains, which improves safety.
In medicine, neodymium magnets are vital for MRI machines. Their power helps the machines create clear pictures of organs and tissues. The strong magnets pull on hydrogen atoms in the body, making sharp images doctors can use for checks. Hospitals count on these magnets to deliver precise results for patient care.
In magnetic couplings, these magnets allow for a strong, tight link between two parts without direct contact. This way, there is no wear and tear, leading to a longer life. The strong neodymium magnets give a smooth, steady transfer of motion and power. This makes them great for tasks where parts need to work closely without breaking down over time.
For businesses that buy these magnets in bulk, DIY variants can be a great way to save costs. Below are steps to make the arc magnets at home:
The first step is to collect all the necessary items. For this project, businesses will need neodymium magnet material, adhesive glue, steel mold for the curved arc shape, and sandpaper. A cutting tool will also be needed in case the magnet material needs to be resized. Finally, get safety gear like gloves and goggles to protect against sharp edges and dust.
Using the steel pieces, make a mold in the shape of the arc magnet. Each steel half needs to form a smooth curved arc. Once both halves are done, attach them together tightly so the magnet material does not leak. A balanced mold creates an even powerful magnet, so double-check the curve matches the target shape before moving on.
Get the neodymium magnet material and cut it down to fit inside the mold. Use sandpaper to smooth out the pieces fully. Sharp edges or rough sides can lower the segment's strength.
Put the arced material into the steel mold. Make sure they fit snugly together with no gaps. These gaps will decrease the magnetic field strength. Once they are tightly in place, mix up the epoxy glue according to the package instructions. Carefully coat the area where the magnet material meets the steel mold with a thin even layer of glue.
Find a safe place where nothing will touch the setup. Allow the glue to dry fully per the brand's directions. Avoid bumping, moving, or tapping the mold while the glue dries to keep the arc shape intact. With some patience, the strong bond will form, and the magnet mold will be ready for use.
Separately, take off the steel parts of the mold. Carefully peel away any glued parts as well. Double-check that the epoxy dried fully before removing the segments. If it is still soft, wait longer before attempting to take them out.
Use sandpaper or a grinding tool to smooth out the surface of the final magnetic segments. This gives each arc a clean feel. A polished finish helps with even glue bonds if more gluing is needed later on.
A1: No, these arc magnets are not water-resistant. However, they can be waterproofed using an epoxy coating. Keep in mind that while this coating makes the magnet waterproof, it also decreases the magnet's strength.
A2: Many industrial sectors like automotive, electronics, marine, medical, and robotics use these magnets. They are also applied in metal processing. Businesses in high-tech fields value the exceptional permanent magnetism that these magnets offer.
A3: Yes, neodymium magnets, like these arc segment ones, can lose their magnetism. However, they do not lose their magnetism through regular use. They can lose their magnetism when exposed to extremely high temperatures of over 80 °C or severe physical harm.
A4: No, especially arc magnets cannot be modified once produced. They are shaped into specific curves and can only be cut or ground if the buyer requests such modifications. This is because neodymium magnets cannot be remagnetized once their magnetism has been destroyed.
A5: No, magnetic segment magnets are safe for humans. They will not affect human health in any way. Just make sure to keep strong magnets away from electronic devices. The strong magnetism can affect the functioning of electronic devices like phones and cameras.
