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Reasons for Setting Magnetic Ring in Digital Equipment

The magnetic ring is an anti-interference electronic component made of ferrite material. The digital device transmission line has a cylindrical thing called the magnetic ring. Its function is to suppress high-frequency interference signals, so it is like a low pass filter that allows signals below the cut-off frequency to pass and suppresses absorption for high-frequency signals.

The motherboard, CPU, power supply, and IDE data cable in the computer case all work at a very high frequency, so there are a lot of stray electromagnetic interference signals in the case, and the signal strength is several times that of the outside of the case.

USB cables without magnetic loops are not shielded in this space, then these USB cables become good antennas to receive various messy high-frequency signals in the surrounding environment, and these signals are superimposed on the originally transmitted signals. It may even change the useful signal originally transmitted, which is prone to problems.

Different magnetic rings have different impedance characteristics at different frequencies. Generally, the impedance is very small at low frequencies. When the signal frequency increases, the impedance of the magnetic ring increases sharply. It can pass the normally useful signals well, and can well suppress the passage of high-frequency interference signals, and the cost is low.

Ningbo Tengxiao Magnetic Industry Co., Ltd. as a professional supplier of magnetic products and magnetic devices, the company adheres to market-oriented and customer needs as the criterion and is dedicated to high-quality neodymium iron boron magnets and magnetic devices. For more details, please continue to pay attention to us.

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Application of Neodymium Ring Magnet in Motor

The magnetic field distribution of the neodymium ring magnets is as follows: the inner space of the ring still belongs to the outer magnetic field distribution, and part of the magnetic induction line connects the magnetic poles of both ends through the inner hole of the ring.

What is the magnet?

A magnet is a substance that repels each other. If small molecules in an object can be arranged in the same direction, it becomes a magnet. Its composition is iron, cobalt, nickel and another special atomic structure, the atom itself has magnetic moments, the general arrangement of these mineral molecules is disorderly. Magnetic regions interact with each other to show no magnetism, but the direction of molecular alignment tends to be consistent under the guidance of external forces (such as magnetic field), showing magnetism, also known as a magnet.

The magnetization of magnets:

Most magnetic materials can be magnetized to saturation in the same direction, which is called “magnetization direction” (orientation direction). Magnets without orientation (also known as isotropic magnets) are much less magnetic than oriented magnets (also known as anisotropic magnets).

Advantages and disadvantages of ring magnet for motors

Ring magnets used in motors are usually bonded neodymium magnets with injection-molded ferrite rings. The disadvantage is that both materials have poor magnetic properties.

The advantage is that the cost is low, easy to assemble, and the general speed such as 5000rpm or so, no protection outside the magnet, but for the general motor is enough.

What are the advantages and disadvantages of neodymium ring magnets?

Advantages: simple structure, easy installation, and cost-saving.

Disadvantages: cost is more expensive than tile design.

Technically, the radiation ring has been very mature, and some large customers are using it in batches.

Thank you for reading our article, hope it can help you better understand the characteristics of NdFeB magnets. We, Ningbo Tengxiao Magnetic Industry Co., Ltd. have many neodymium ring magnets and custom industrial magnets products. Welcome to visit our website to check.

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Application of magnetic disk in daily life

1. Electromagnetic crane: Electromagnet has many applications in practice. The most direct application is electromagnetic cranes. The Magnetic Disk push pin installs the electromagnet on the crane. After power on, pull out a large amount of steel, move it to another location, cut off the current, and then put the steel down. Large electromagnetic cranes can lift several tons of steel at the same time.

2. Electromagnetic relay: Electromagnetic relay is an automatic switch controlled by electromagnet. The use of electromagnetic relay can control high voltage and high current, has low voltage and low current, and can be used for long-distance operation. What are the applications of magnetic Disk magnets in life?

3. The circuit is closed, the electromagnet attracts the elastic sheet, and the hammer moves toward the iron bell. The hammer struck the iron bell and made a sound. At the same time, the circuit is disconnected, the electromagnet is not magnetic, and the hammer bounces back. The circuit is closed. The ringtone repeatedly emits a continuous ringtone.

4. Electromagnetic concentrator: The electromagnetic concentrator is manufactured based on the principle that magnets are attractive to iron ore. When the electromagnetic concentrator works, iron sand will fall into the B tank. During the descent of the ore, the non-ferrous metal ore will not be attracted by the electromagnet when it passes through the electromagnet. The strong magnet pushpin directly falls into the A box due to gravity; the iron ore can be attracted by the electromagnet, adsorbed on the drum and connected with the drum Rotate together. When the magnet is placed above Box B, the electromagnet has very little attraction to the ore, so the ore falls into Box B due to gravity.

5. Maglev train: Maglev train is a high-speed magnetic levitation train system that uses non-contact electromagnetic levitation, guidance and drive systems. It can reach more than 500 kilometers per hour. It is the fastest ground passenger vehicle in the world. It has the advantages of fast speed, strong climbing ability, low energy consumption, low operating noise, safety and comfort, no fuel, and less pollution. It uses elevated roads and occupies very little arable land. Maglev trains mean that these trains use the basic principles of magnetism to float on the track instead of the old steel and train trains. Magnetic levitation technology uses electromagnetic force to lift the entire train carriage, get rid of annoying friction and unpleasant buzzing, and achieve fast "flying" without touching the ground and without fuel.

6. Speaker: A speaker is a device that converts electrical signals into acoustic signals. It is mainly composed of fixed permanent magnets, colored plastic magnetic pin coils and cones. When sound passes through the coil in the speaker in the form of audio current, the magnetic field generated by the magnet on the speaker will exert a force on the coil, and the coil will vibrate at different frequencies due to the change. The current intensity drives the paper cone to emit sounds of different frequencies and intensities. The cone transmits vibration through the air, so we hear the sound.

7. Household appliances: Electromagnets can be used in refrigerators and vacuum cleaners. Electromagnets are also used in motors, generators and electromagnetic relays. The inlet and outlet valves of the fully automatic washing machine and the induction flush valve in the bathroom are also controlled by Magnetic Ring Manufacturers

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Reasons for the popularity of magnetic badges

The use of Badge Magnets in our daily lives is very common. Our previous "three good student cards" pin badges will gradually fade out of our lives. In most cases, the magnetic badge still exists. It is most used in offices, hotels, restaurants, etc., and is often used as a location sign. Pin badges have the following inconveniences. First of all, it is inconvenient to wear. Needle type needs to wear clothes to fix the position. Rusty pins will damage clothes and rust stains. It is difficult to clean white clothes. Because the new magnetic badges are mostly beautiful in appearance, and the materials are acrylic, luminous plastic, aluminum, etc., everyone likes to wear this badge. Today's strong magnets have a great attraction. So the badge is fixed on the clothes, very strong and will not slip off easily.

First of all, the magnetic badge adopts the principle of magnetism, which can avoid the damage of ordinary badge products and the side effects of skin irritation when worn. Safe and convenient to prevent general accidents.

The magnetic badge allows you to print on paper yourself. It can be replaced by itself without any restrictions. When using the magnet badge badge, please remove the magnet on the back and place it on the inside of your clothes. At the same time, put the surface of the card on the outside of the clothes. To make it natural, the company's magnetic badge uses a new magnetic design to protect clothing and skin, making it safe and portable.

Second, office magnets, which are used in all aspects of life, such as opening and closing of many backpacks, the adsorption design on the pencil case, and the switch design of some diaries. The magnet is reasonably priced under the same magnetic force and can be customized according to customer requirements .

The use of office magnets requires care to reduce collisions and avoid heating to prevent magnets from demagnetizing. Do not let magnets close to objects that are afraid of magnetism: such as mechanical watches, monitors, etc. Pay special attention to the magnet not to be close to all kinds of magnetic cards! A slight negligence will lead to huge losses. When using or storing the magnet, please avoid corrosive gas containing electromagnet, high conductivity environment, acidic environment of Office Magnet fixing plate and organic solvent. Otherwise it will cause the magnet to corrode and weaken the magnetic performance and mechanical strength.

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Introduction to Permanent Magnet

Permanent magnets in Permanent Magnet Components are unique components in the energy conversion process. They usually operate in a dynamic cycle, in which energy is converted from electrical or mechanical form to field energy, and then back to its original form.

This process is critical, as permanent magnets are a part of almost all the most important products in our lives. As new methods of manufacturing permanent magnets are created and new markets drive demand for better magnets, permanent magnets are beginning to change.

Advancements in Permanent Magnets

One of the major advancements in permanent magnets, and one of the most consequential, is the ability to produce permanent magnets through additive manufacturing. Producing magnets without any tooling, and with very little waste, opens up a plethora of design opportunities.

In fact, researchers recently announced that the permanent magnets produced through additive manufacturing outperform traditional bonded magnets and produced less waste. Additive manufacturing creates new capabilities in permanent magnets.

Ningbo Tengxiao Magnetic Industry Co., Ltd. not only owns Permanent Magnet Components and other products, but is also a Countersunk Magnet manufacturer. Welcome to contact us, we will provide you with quality service.

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The Influence of Temperature on NdFeB Magnets

It is very important to know the maximum operating temperature of each grade of the magnet in the application of the NdFeB magnet. NdFeB magnets work best at lower temperatures and become even stronger when the temperature drops to about -130 ° C. However, some grades of NdFeB magnets can also be exposed to very high temperatures before the change of their properties and the loss of their magnetism, either temporarily or permanently. Then how does temperature affect NdFeB magnets? In this article, let’s try to find out the answer.

Normally, for every 1 degree Celsius rise in temperature, NdFeB magnets lose 0.11 percent of their magnetism. As long as the maximum operating temperature is not exceeded, this small loss can be fully recovered on cooling. However, if it is exceeded, the small loss will not be recovered on cooling, and continuous hot-cold cycles will result in a decrease in magnetic properties.

Usually, there are two letters following the grade name, which determine the temperate rating and represent the maximum operating temperature the magnet can withstand before its magnetic properties are seriously affected. But these ratings should always be regarded as guidance values because other factors (such as size and shape) can also affect the performance of magnets at high temperatures.

Ordinary NdFeB magnets are strongest at temperatures below 80 ° C, but after that, they lose their magnetic output.

In addition, NdFeB magnets can be subject to permanent demagnetization fields and radiation, so it is important to always fully understand the environment in which the magnets will be used. For instance, the demagnetization temperature of a NdFeB magnet free space is lower than that of an equal-sized magnet connected to a piece of mild metal.

Magnets love cold. A NdFeB magnet will continue to work when the operating temperature drops to -130°C, at which point the direction of magnetism is said to shift, reducing performance by about 15%. Magnets really hate to be moved quickly from a very cold temperature to a very hot temperature, because this thermal shock may cause them to break or crack.

Ningbo Tengxiao Magnetic Industry Co., Ltd. is not only a Strong NdFeB Magnet supplier, but also an Office Magnet manufacturer. Welcome to visit our official website.

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Permanent Magnet Motors and Induction Motors

At present, motors can be classified according to the working power source, structure and working principle, different starting and operating modes, and different uses. Among them, the motors suitable for driving new energy vehicles mainly include Permanent Magnet Motor Assembly, induction motors and switched reluctance motors.

An induction motor can also be called an AC asynchronous motor. It is a type of motor in which the rotating magnetic field formed after the stator winding and the magnetic field of the induced current in the rotor winding interact physically to generate an electromagnetic torque to drive the drive to rotate. The permanent magnet motor mainly refers to a permanent magnet synchronous motor. The so-called synchronization means that the rotation speed of the rotor is always consistent with the current frequency of the stator winding.

With regard to these two types of motors, the current market share of permanent magnet synchronous motors in China is higher.

First of all, at the same technological level, in addition to field weakening control, permanent magnet synchronous motors perform better than induction motors in terms of torque density, power density and efficiency, and their energy efficiency and cruising range are relatively high;

Secondly, the permanent magnet synchronous motor can still guarantee high efficiency in the transient state, and the motor is small in size and light in weight, suitable for frequent start and stop conditions and small passenger car layout space.

Third, the permanent magnet motor does not require an efficient and complex cooling system like induction motors, which is conducive to the design and manufacture of the entire vehicle.

Finally, permanent magnet materials such as neodymium iron boron required by permanent magnet synchronous motors are important rare earth resources, and China has 70% of the world's rare earth resources, and the total output of neodymium iron boron and other magnetic materials has reached 80% of the world. Due to the great advantage of domestic rare earth resources, it is most logical to choose a high-efficiency permanent magnet synchronous motor.

But in fact, induction motors and permanent magnet motors have no exact distinction between advantages and disadvantages. Judging from the current technical advantages, permanent magnet synchronous motors have a higher market share. This does not mean that induction motors are inferior to permanent magnet motors.

Compared with permanent magnet motors, induction motors have a wider speed range, lower cost, simpler process, and their operation is also reliable and durable. Although induction motors do not have the advantage in terms of weight and size, if the battery mileage increases significantly in the future and the induction motors are optimized for volume, its market share will increase greatly in the future.

Generally speaking, induction motors are more suitable for high-performance and high-speed working conditions, while permanent magnet synchronous motors are more suitable for frequent start-stop working conditions. Induction motors and Permanent Magnet Components have their own strengths and weaknesses. The type of motor used depends mainly on the positioning of the model and the technical field that the company is good at.

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The Potential of Permanent Magnets

Permanent magnets are unique components in the energy conversion process. They usually operate in a dynamic cycle, in which energy is converted from electrical or mechanical form to field energy, and then back to its original form.

As mentioned, permanent magnets are in nearly all the products we use. In that way, it’s difficult to accurately describe the entire scope of changes new permanent magnet capabilities will make.

For example, the ability to manufacture permanent magnets in virtually any shape leads to new capabilities in highly power-dense electrical machines. While this in itself has several different applications, one of the most notable is in transport applications.

Efficiency in electric vehicles is highly dependent on the weight of the vehicle. Permanent magnets produced through additive manufacturing – with their power-dense design – enable lighter electric vehicles, significantly improving their efficiency.

There are many other applications that have the potential to be dramatically improved through additive manufacturing of permanent magnets. Recent advancements in permanent magnets will have widespread effects.

Thanks for reading our article. Ningbo Tengxiao Magnetic Industry Co., Ltd. specializes in the production of permanent magnet motor assembly and other products. If you are interested, please contact us.

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Advantages of magnetic hooks

Because the resources of the indoor working space are precious, it is important to realize a unique office style without wasting office resources. The use of small objects for the working environment is particularly important. Magnetic Hook is one of them.

For example, install a magnetic hook on the wall, which can hold folders or light clothes, and you can also use this magnetic hook to hang all kinds of decorative artworks or briefcases.

Once the traditional hook is installed, it will not only damage the wall, but also cannot move, the appearance of the magnetic hook can solve this problem. After laying a piece of metal on the wall, the magnetic hook can move freely within the range of the metal, which can handle many indoor space limitation problems. In addition, ordinary hooks usually cannot hang objects with excessive net weight, while the bearing capacity of magnetic hooks is much higher, which not only expands the application space of the working environment, but also makes it more convenient.

Magnetic hooks can be used not only in work environments, but also in bedrooms, living rooms, study rooms and many other places.

When using a magnetic hook, pay special attention not to leave it with other magnetic tools for a long time, as this will cause the magnetic hook or other magnetic tools to decrease and fail their original function. In addition, the magnetic hook is not suitable for being placed in a wet and cold natural environment, such as a bathroom or kitchen, which will reduce the service life of the magnetic hook.

Among all the magnetic hooks, the neodymium iron boron magnetic hook is a movable hook. Usually the NdFeB magnet hook is embedded in the shell base, usually connected to refrigerators, dryers and metal filled cabinets, mobile homes, tool boxes, workshop lockers, steel kitchen backdrops, magnetic whiteboards, steel shelves Or any other magnetic surface. The maximum weight supported by the NdFeB magnetic hook can be specifically determined. long magnetic hooks can effectively help organize tools, sports equipment, kitchen utensils, keys, gardening equipment, cables, wires, etc. very convenient.

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The role of magnetic badges

The Badge Magnets is made by adding magnetic materials to the synthetic part of the badge to make it more convenient to hang and wear. The place and purpose of the magnetic badge are more formal and professional, and it adds authority. Government, court, etc. Most authoritative places are used.

Magnetic breastplate is a kind of work number plate or small introduction sign hanging or buckled on the left side of the jacket. Most of the signs are worn on suits, formal wear, and suits, and serve as an introduction to the unit. His use is more casual, mostly in corporate, corporate, and general office environments.

1. The magnet mentioned in the name badge is just a way of wearing the back of the badge. It can be said that most of the badges on the market can be worn in the form of magnets.

2. When consulting the specific price, it is necessary to figure out the surface material, craft, style, size and other factors of the badge to get the most accurate quotation.

3. Since the magnet is made of rare earth materials, the price of Magnetic Name Badge accessories is relatively high at present due to the surge of rare earth materials.