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How to consider the specifications and types of magnets

When choosing NdFeB magnets, customers should choose the magnet trademark suitable for them according to their working temperature. If the working temperature is higher than the...

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Square magnet

Horseshoe magnetA horseshoe shaped magnet is simply a bar magnet bent into a U-shaped shape. The U-shaped shape points the magnetic poles in the same direction, making the magnet stronger. This shape was originally created as a substitute for a bar magnet and has now become a universal symbol for magnets. According to the strength of a horseshoe magnet, it can be used to absorb metal objects of any size. For example, small horseshoe magnets can collect paper clips, while industrial sized horseshoe magnets are used in construction and engineering to absorb large amounts of heavy metals. A horseshoe magnet is also used at the bottom of the pendulum.Disk magnetWe can manipulate the shape of the magnet to increase the magnetic pole area, thereby increasing its suction. Due to its wide and flat surface, the disk magnet has a large magnetic pole area, making it a sturdy and effective magnet.Square magnetAccording to the size of the disk, this shape has multiple uses. Disk magnets are used da

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Calculate the strength of the magnet

We will start with electromagnets and see how they are measured, because in some aspects, it is easier to first understand electromagnets.Consider the two electromagnets shown above. The one on the right is a simple insulated copper wire coil wound around a piece of iron, such as a nail.The one on the left is the same, but the iron core has been bent into the shape of the letter "C", much like a horseshoe magnet.The left image makes it easier for us to see the so-called magnetic circuit coil creating a magnet with North and South poles, and the magnetic force moves in a circuit from north to south, passing through the air gap to reach there.In this regard, the magnetic circuit is similar to the circuit. Current always flows from one electrode to another, just like current flows from one end of a battery to the other.Magnetic flux is unwilling to propagate in the air. It is much easier to pass through iron. We say that air has a high reluctance and iron has a low magnetic resistance. Th

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Measures for permanent magnets

What is a good permanent magnet? We need a magnet with a very concentrated magnetic field. We also need a magnet that can maintain magnetism. To understand how we measure the strength and permanence of permanent magnets, it is helpful to imagine how we manufacture magnets.We start with a piece of iron or another ferromagnetic material. When we find it, we assume that it is not magnetized. To magnetize if, we place it in a magnetic field generated by another magnet. We will place our magnetic field in a magnetic field generated by an electromagnet, so that we can change the strength of the magnetic field and see what happens to iron.When the magnetic field intensity is low, the number of force lines concentrated in iron is also small. As the magnetic field strength increases, more small magnets (called magnetic domains) in iron align with the external magnetic field. The number of force lines in iron increases with the strength of the magnetic field. This will continue until all magnets

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Magnet installation

Selection based on installation method: As the installation method for magnets, you can refer to different types of magnets in the magnet product series and choose the installation position suitable for this structure. Due to the fact that magnetic materials made of neodymium and cobalt are solidified from sintered materials, they are not resistant to impact and stress concentration, which needs to be taken into account during installation.① Please make sure to place the magnet on a flat surface② If installing a bolt or threaded magnet, please confirm that the holes and screw holes on the magnet are not misaligned③ Before installing the flat head bolt, please confirm that there is no garbage attachedSelection based on environment: Magnet magnetism may be lost due to temperature. When the usage temperature is higher than room temperature, the magnetism will weaken, and when the temperature decreases, the magnetism will return to its original state. However, it should be noted that when

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Basic information of magnets

Cobalt magnets, officially known as "samarium cobalt magnets," have a magnetic strength second only to neodymium magnets. The advantage is that it is not easy to rust and has excellent high-temperature resistance. However, this type of magnet has poor mechanical strength and is very prone to cracking, so attention should be paid when using it.Neodymium magnet, also known as neodymium iron boron magnet. Among existing materials, the magnetic force is the strongest and can exert strong magnetic force in smaller sizes. The disadvantage is that it is easy to rust. Together with cobalt magnets, they are called rare earth magnets. It is a general term for strong magnets and is a type of artificial permanent magnetThe advantages of neodymium magnets are high cost-effectiveness, high remanence, high coercivity, high energy product, and easy processing into various sizes, such as disk magnets, ring magnets, rectangular magnets, arc magnets, and other shapes of magnets.

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Have you ever seen a magnet with magnetism on the front and almost no magnetism on the back?

There is a type of magnet that has magnetism on one side and almost no magnetism on the other side, and is mostly made of ferrite material. We call this type of magnet single-sided multipolar ferrite.Picture of a magnet with magnetism on the front and almost no magnetism on the back.I don't think a large part of people have seen this type of magnet before. It uses a multipole charging pole number, allowing only one side of the magnetic circuit to open, because there is no single pole in the magnetic pole. Therefore, this type of magnet cannot be a single pole. Omi is the crater, surrounded by a magnetic field composed of several double poles, with the other side being non magnetic. This side is the neutral point of the S and N poles.How do you see the distribution of magnetic circuits on the front with magnetism and almost no magnetism on the back?Our magnetic steel manufacturers usually use magnetic testing plates. In the absence of magnetic testing plates, we can also use a layer

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