Neodymium Magnets – Neodymium Rare Earth Magnets World

How to use Custom Rubber Coated Neodymium Magnets

Rubber’s elasticity, toughness, impermeability, adhesiveness, and electrical resistance make it useful as a coating material. Neodymium magnets wrapped in protective coating rubber feature waterproofing and crushproof, as well as apply to delicate metal surfaces, providing a good level of corrosion protection for outdoor use and leaving no scratch.

With neodymium magnets (NdFeB) inside, rubber coated magnets have extremely strong holding forces.

With rubber coating outside, neodymium magnets have great durability and high friction which can stand steadily on various surfaces, such as glass.
Rubber coated magnet assembly is a magnet system with bore, countersunk, eyebolt and hook that can be used with a range of standard fasteners and attachments.

How to use Custom Rubber Coated Neodymium Magnets?

These high strength, soft touch rubber coated magnets and assemblies are designed for different holding/mounting applications, such as furniture fixings, retail fixing, hanging artwork, keeping doors and drawers closed, holding heavy objects: lights, equipment, exhibit fixtures, tools, and other items in warehouses, manufacturing facilities, garages, work stations, etc.
Uncoated neodymium magnets are easily oxidized. To protect our NdFeB magnets from corrosion, we will use different plating.

Nickel-copper-nickel coating is the most common one. But even with electroplated coatings; you’d better use neodymium magnets exclusively in dry indoor areas.

If you want to use magnets in the water or outdoors, NiCuNi+plastic coated is the right choice.

Our plastic coated magnets are custom magnets wrapped with environment-friendly colorful plastic. They are waterproof and crushproof.

Where to use rubber-coated magnet assembly?
In the office (e.g. magnetic whiteboards)
Long-term use outdoors
In wet surroundings (e.g. bathroom)
Underwater (e.g. Use neodymium magnets in the aquarium to hold flag racks, powerheads)

Neodymium Strong magnet VS Common Magnet

Although many people know about magnets, they do not know that magnets can be divided into many kinds. Moreover, there are great differences between “ordinary magnets” and “Neodymium strong magnets“. Magnets used in different industries are also very different.

1. According to the material, magnets can be divided into Nd-Fe-B magnets, ferrite magnets, samarium-cobalt magnets and AlNiCo magnets. Among them, the popular ones are Nd-Fe-B magnets, which are called “the king of magnets” because of their super-strong magnetic force.

2. According to magnetism, it can be divided into permanent magnet and ordinary magnet.

3. According to the magnetic force, it can be divided into strong magnet and ordinary magnet.

So what are the differences between ordinary magnets and neodymium strong magnets?

1. High temperature resistance: The indoor temperature and Curie temperature of Nd-Fe-B magnets are higher than those of ordinary magnets. No matter which kind of strong magnet material is used, it is better than ordinary magnet, so the limit temperature of strong magnet itself can be greatly increased. In the industrial industry, the machine can run at high temperature.

2. Hardness: Because Nd-Fe-B magnets increase the density of rare elements, they will be harder in hardness than ordinary magnets. Therefore, in the use process, it greatly avoids the situation of fragmentation of magnets caused by collision, while ordinary magnets are fragile, and their appearance will rust over a long period of time.

3. Strong magnetism: Common magnets on the market are determined by the amount of coins they can absorb, while NdFeB strong magnets can absorb 640 times their own weight, and the magnetic force can be imagined to be how big, so when contacting strong magnets, attention should be paid to avoid being pinched by them.

4. Price: Although the magnetism of NdFeB magnet is very strong, its price is proportional to itself.

In summary, there is still a significant gap between neodymium magnets and ordinary magnets. Nd-Fe-B magnets are generally used in electronics and other industries.

For more information, please visit https://www.stanfordmagnets.com/

Is Neodymium Harmful to Humans

I. Historically Magnetized Water
Magnetism is one of the four fundamental forces in nature. The compass in modern China is an example of the ingenious use of magnetism.

2. Neodymium magnets, High Strength Magnet King
In 1983, the third generation of NdFeB, Na-Fe-B came out. Its magnetic field strength is more than ten times that of ordinary magnets. Its service life is over ten years. It is the highest permanent magnetic data of magnetic energy product (MGOE) discovered by human society so far, and it is known as the “King of Permanent Magnets“. It is widely used in national defense, aerospace technology, microwave, communication, electronics, medical care, and other high-tech areas.

3. Scale removal and scale prevention of neodymium
After neodymium high-intensity magnetization treatment of water, the angle and length of water molecule bond deformed simultaneously. The hydrogen bond angle decreased from 105 degrees to 103 degrees, resulting in a series of changes in the physical and chemical properties of water. The activity and solubility of water improved greatly. Calcium carbonate in water decomposed into lower solid calcium bicarbonate in the cooking process, which was not easy to accumulate on the wall and was easily carried away by water. In addition, the degree of polymerization of water improves, and the dissolved solid material becomes finer particles. When the particles are refined, the distance between the two ions is smaller, and it is not easy to condense on the wall, so as to achieve the effect of scale removal.

4. Neodymium Health Care Principle for Dispelling Diseases
Due to the difference of geographical environment and mineral content in water, harmless substances in water have a great impact on our life and health. Calcium salts and magnesium salts in water are insoluble, affecting the absorption and Photosynthesis of plants and animals. A large number of theoretical and scientific experiments have proved that NdFeB high-intensity magnetization can change the external tension, density, solubility of water, and seriously affect the chemical properties such as acid and alkali. Magnetized water can add the activity of enzymes in water and the permeability of biofilm, often drinking can strengthen health care and improve human immunity, prevent and treat a variety of diseases.

After high-intensity magnetization of water, water molecules are activated and oxygen content is high:
1. Regular drinking can add permeability of biofilm, reduce blood thinning, adhere to vascular elasticity, avoid thrombosis, prevent and dissolve stones;
2. Regular drinking can strengthen the body, improve human immunity, resist aging, prevent and treat many diseases, slow down and promote the aging of human epidermis, commonly used. It can make your skin smooth, tender and beautiful.

For more information, please visit https://www.stanfordmagnets.com/

Anything You Should Know About NdFeB magnets

1. What are the applications of Nd-Fe-B magnets?

Neodymium permanent magnets are rapidly developing and widely used because of their excellent properties, abundant raw materials, and reasonable prices. It is mainly used in micro-motor, permanent magnet instrument, electronic industry, automobile industry, petrochemical industry, nuclear magnetic resonance device, sensors, Halbach Arrays, audio equipment, magnetic levitation system, the magnetic transmission mechanism, and magnetic therapy equipment.

2. What materials are NdFeB made of?

The main materials of the Nd-Fe-B permanent magnet are rare earth metal Nd (32%), metal element Fe (64%) and non-metal element B (1%) (a small amount of Dy, Tb, Co, Nb, Ga, Al, Cu, etc.). Neodymium ternary permanent magnets are based on Nd2Fe14B compound, whose composition should be similar to that of Nd2Fe14B compound. However, when the composition of Nd2Fe14B is completely proportioned, the magnetic properties of the magnet are very low, even no magnetism. It is only when the content of Nd and B in the actual magnet is more than that of the Nd2Fe14B compound that better permanent magnet performance can be obtained.

3. How long can the magnetic properties of NdFeB last?

Neodymium magnets have high coercivity, and there will be no demagnetization and magnetic changes in the natural environment and general magnetic field conditions. Assuming that the environment is suitable, the magnetic properties of the magnet will not be greatly damaged even after a long time of use. So in practical applications, we often neglect the influence of time factor on magnetic properties.

4. What is the direction of the rare earth magnet?

The direction in which the magnet with anisotropic orientation can obtain the best magnetic properties is called the orientation direction of the magnet. The magnet is divided into:

a. Isotropic magnets: magnets with the same magnetic properties in any direction

b. Anisotropic magnets: The magnetic properties will be different in different directions, and there is a direction, i.e. orientation direction, in which the magnets with the highest magnetic properties are obtained. Sintered NdFeB permanent magnets are anisotropic magnets, so it is necessary to determine the orientation (magnetizing direction) before production.

5. Factors affecting the magnetism of neodymium magnets

Because sintered NdFeB is very sensitive to working temperature, the instantaneous maximum temperature and the continuous maximum temperature of the environment may produce different degrees of demagnetization for magnets, including reversible and irreversible, recoverable and irreversible.

6. What is the working temperature range of neodymium magnets?

Temperature limitation of Nd-Fe-B magnets has led to the development of a series of grades of magnets to meet different operating temperature requirements. Please refer to our performance catalog to compare the operating temperature ranges of different grades of magnets. It is necessary to confirm the maximum operating temperature before selecting neodymium magnets.

How to Separate Strong Magnets

Many people want to find a way to separate the magnets from an old hard disk due to the strong magnetic force among permanent magnets.

Well, how to merge and separate strong magnets?

It is a big and serious problem while people working with them.
The strong magnet is NdFeB magnet. Compared with ferrite magnets, AlNiCo, and SmCo magnets, Nd-Fe-B magnets can absorb 640 times weight of their own, so neodymium magnets are often called powerful magnets by outsiders.

The role of powerful magnets:

1. refers to the north and the South

2. attract small objects

3. electromagnet can be used as an electromagnetic relay.

4. motor

5. generator

6. electroacoustics

7. magnetic therapy

8. magnetic levitation

9. nuclear magnetic resonance

In daily life, strong magnets should be placed away from easily magnetized items, such as floppy disks, credit cards, computer monitors, watches, mobile phones, medical devices, etc. The magnet should be far away from the pacemaker. For larger size magnets, plastic or cardboard gaskets should be added between each piece to ensure that the magnets can be easily separated. Magnets should be stored in a dry and constant temperature environment.

Sintered neodymium magnets, even with small sizes, have the very strong magnetic force that will surprise you definitely. Permanent magnets belong to the dangerous object; when you handle them:
1. You should get some magnet safety-danger tips.
2. Do some clean-ups in the workplace to keep iron items away.
3. Prepare some tools like work glove, safety glasses, and woodblock, the wood block is a good spacer for big strong magnets.
4.Although demagnetizer is a way to separate magnets. But it will lose magnetic force. So it is very important to know the principle of separating magnets as below picture:

Due to the long shape of neodymium cylinder magnets to let you have the area to grab, you can separate two small cylinder magnets by hand. But for small thin neodymium disc magnets or other very big strong magnets, the first method is the right way. Here are the reasons:
1. Seek leverage from another object such as desk and/or find a better way to grab the magnets
2. Separate magnets apart parallel, which requires less force.

For more information, please visit https://www.stanfordmagnets.com/

Which Magnet is Used for Industrial Purpose

Nd-Fe-B magnetic materials, as the latest development of rare earth permanent magnets, are called “magnetic king” because of their excellent magnetic properties. Fe-B is the best magnet with small volume, lightweight and strong magnetism. Major materials for producing NdFeB high-strength magnets are neodymium, pure iron, ferroboron alloy and other additives.

In the healthcare industry, lots of practice and scientific experiments have proved that high-intensity magnetization of neodymium iron boron magnet can change the surface tension, density, solubility and other physical properties of water, and have a significant impact on chemical properties such as acid and alkali. Magnetized water can increase the activity of enzymes in water and permeability of biofilm, often drinking can strengthen health care. Regulate the human body’s microcirculation system, digestive system, endocrine system, and nerve function, improve human immunity, prevent and treat a variety of diseases.

In the scale removal and anti-scaling industry, the angle and length of water molecular bond are deformed simultaneously after high-intensity magnetization of NdFeB. The hydrogen bond angle is reduced from 105 to 103 degrees, which changes the physical and chemical properties of water.

The activity and solubility of water are greatly improved. Calcium carbonate in water is decomposed into lower and soft calcium bicarbonate during cooking. It is not easy to accumulate on the wall and easy to be taken away by water. In addition, the degree of polymerization of water increases, and the dissolved solid matter becomes finer particles. When the particles are refined, the distance between the two ions is smaller, and it is not easy to coagulate on the wall, thus achieving the effect of scale removal.

Environmental protection and energy saving of neodymium cylinder magnet is becoming an important factor affecting the development of manufacturing industry in various countries, and neodymium is one of the main raw materials for environmental protection and energy saving products. For example, the application of NdFeB in automobiles, compressors, wind turbines and other fields is precisely for the consideration of environmental protection and energy conservation.

NdFeB will be more widely used as a functional material for environmental protection and energy saving. In an era of increasing energy shortage, the conversion of wind energy into electricity will undoubtedly be supported by government policies. Wind power generation is now being implemented on a large scale in Europe. The previous one-megawatt unit used about one ton of NdFeB. Thanks to the rapid growth of the wind power industry, the amount of NdFeB used in wind turbines will also be increased rapidly.

Nd-Fe-B magnetic materials, as the latest development of rare earth permanent magnets, are called “magnetic king” because of their excellent magnetic properties. Nd-Fe-B magnet has the characteristics of small volume, lightweight and strong magnetism. It is the best cost performance magnet so far.

How to store magnet?

1. Powerful magnets should not be close to electronic equipment, otherwise, it will affect the control circuit and use of the electronic equipment.

2. Magnets should not be stored in a humid environment to avoid oxidation, resulting in changes in appearance, physical properties, and magnetic properties.

3. If a sensitive object to a metal object approaches a magnet, it will be rough and red. If the above reaction occurs, please do not touch the strong magnet.

4. Do not close the magnets to floppy disks, hard drives, credit cards, tapes, debit cards, television tubes, etc. If the magnet is close to the magnetic recorder and other devices, it will affect or even destroy the recorded data.

Applications of High Performance NdFeB Permanent Magnet Materials

In the rare earth functional materials industry, high-performance neodymium permanent magnets are mainly used. Neodymium magnets are mainly used in high-end applications such as new energy and energy-saving and environmental protection, such as EPS, new energy vehicles and so on.
With the technological innovation of the automobile industry and the demand of energy saving and environmental protection, electric or hybrid vehicles with low energy consumption, low noise and low exhaust gas have become the goal of everyone. Bonded Nd-Fe-B magnets have the advantages of high magnetic properties, small size, and high efficiency. The motor using Nd-Fe-B magnets has 8-50% higher efficiency, 10% lower power consumption and 30% lower volume and weight. The development of the automobile is miniaturization, lightweight, high performance, and energy saving and environmental protection.

In addition, bonded neodymium magnets are mainly used in micro-motors and sensors of medium and high-grade vehicles. Each medium and high-grade and luxury car uses 50-80 micro-motors, some even up to 100, with an average of at least 60. For example, the seat motor, window motor, wiper motor, EPS power steering sensor, magnet rotor, onboard CD or hard disk and so on, with the development of automobile to comfort, energy-saving and automation, the neodymium magnet used in automobile motor will increase.
In addition to automotive applications, hard disk drives have the high application of bonded NdFeB. The world has entered the information age. The improvement and development of magnetic storage technology and hard disk drive technology will certainly bring about the development of large data storage industry, and the global demand for hard disk will remain stable. And the development of cloud computing has a higher requirement for massive data, massive storage and massive management of computers. As an important medium of magnetic storage technology, the hard disk is one of the most important data storage methods. It will develop with the development of cloud computing. This will bring a large market for bonded neodymium magnets for the hard disk.
Moreover, the emergence of ultra-thin hard drives brings new opportunities for bonded neodymium magnets. To counter the impact of SSDs, several of the world’s largest hard disk manufacturers are planning to develop ultra-thin hard disks to meet the increasing popularity of the tablet computer market demand, the development of ultra-thin hard disks will bring new opportunities for hard disk magnets.

With the rapid development of modern science and technology, we have experienced the full progress of all walks of life in the enjoyment of the rapid development of science and technology, but also in all walks of life can improve the efficiency of the method. No matter how the development of science and technology, our life and work are inseparable from the motor, it is natural to use motor tiles. So the development of magnetic tile in science and technology is also very important.
Every day we work off the means of transportation, the need to drive the motor vehicle movement, the motor in the shoulder of energy conversion at the same time also shoulder the efficiency and safety and other tasks. Among them, the motor magnetic tile is also very important. According to the actual needs, the magnetic tile has a variety of shapes and styles.
Modern tiles are made of permanent magnets, on the one hand, the magnetism will not disappear, basically achieving permanent use. You can assume that if it’s not a permanent magnet, if there’s a loss of magnetism or a loss of magnetism in the process of application, the consequences can be imagined, not much impact and damage, but a car or an aircraft is the entirely different concept.
In addition, the magnetic tile is now required to be able to withstand high temperature, if the motor heating caused damage to the magnetic tile, also in some heavy industry or high-tech areas will cause inestimable losses, so the more important our motor tile is, the more need to ensure its safety and performance. Of course, in today’s high-tech, the industry has been very standardized, magnetic tile development has been able to meet the needs of industry development.

What Are The Strongest Magnets Available

At present, the strongest permanent magnet is neodymium magnets, so it is also called neodymium super magnets. The neo magnets produced by Stanford Magnets is mainly special-shaped strong magnet. They are often used in magneto, servo motors and micro motors.

But the magnets used in different environments are also different, if you want to say which magnetic force is strong in the ordinary environment, it is OK to use N grade NdFeB magnets, we can use N35-N52 according to the situation, the higher the grade of is, the stronger the magnetic force of magnets with the same specification is), the highest operating temperature is 80 degrees.

Many people will think that the magnetic force adding H, SH, UH behind grade will be stronger, in fact, the higher the temperature is, the lower the magnetic force is, the inverse ratio is not proportional.

Which part of the magnet attracts the most?

This is a magnet with a strong magnetic force at both ends, which can also be measured by a gauge. The magnetic field at the center of the magnet is lower than that at the edge of the magnet.

What magnet is the strongest magnet in more than 200 degrees Celsius?

In the environment above 200 degrees Celsius, samarium cobalt magnet is the most powerful magnet. The price of magnets is slightly higher than that of neodymium magnet. Because iron is a small part of the samarium cobalt magnet, it is not easy to be corroded. Generally speaking, it is not necessary to make electroplating treatment. For beauty, electroplating is also acceptable.

If the samarium cobalt magnet is used in seawater, some rust spots will appear on the surface of the product, but it will not affect its performance and use. Due to the physical properties of the samarium cobalt magnet, which is very brittle (even brittler than glass), and the edge part will be short of edges and corners if a little force is applied.

As far as ferrites magnets are concerned, magnetism is relatively weak and the price is very low. In case of extra high temperature, it is usually chosen.

What are the main differences between universal magnetism and strong magnetism?

Ordinary magnets, including ferrite magnets, that is, we usually say it the iron absorption stone, the surface does not need to do surface treatment, the appearance is black.

Strong magnets, generally refer to rare earth permanent magnet, including powerful neodymium magnets, the surface is usually galvanized two kinds of nickel plating, of course, there are many coatings.

The biggest difference between the two is the appearance, high-temperature resistance, and price, if the magnetic force is not much required, as long as the cost is low, then the use of ordinary magnetic can be, like some packaging, handbags, leather products, mostly ordinary magnetic. If there is great demand for magnetism, then strong magnetism is the first choice.

Why do we use heteromorphic magnets? What are the advantages of heteromorphic magnets?

The special-shaped magnet has high-cost performance and good mechanical properties. It has high magnetic energy product and coercive force, and has been widely applied in modern industry and electronic technology. Heteromorphic magnets are widely used in electroacoustics, electrical appliances, magnet rotors, mobile phones and so on.

How to Choose High-quality NdFeB Magnets?

The sintered NdFeB permanent magnets of 1cm 3 will be oxidized and corroded when they are left in air at 150 C for 51 days. It is easier to be corroded in weak acid solution. In order to make Nd-Fe-B permanent magnet durable, it is required to have 20-30 years of service life, it must undergo surface anti-corrosion treatment, in order to resist corrosive medium on the magnet corrosion damage. Nowadays, sintered Nd-Fe-B manufacturers generally adopt plating metal, plating + electroless metal, electrophoretic coating and phosphating treatment to coat the magnet surface with an additional layer of isolation, separating the magnet surface from the corrosive medium, in order to prevent the damage of the medium to the magnet.

Manufacturers generally zinc plating, nickel plating + copper + nickel, nickel plating + copper + electroless nickel plating three main processes, other metal plating requirements, are generally applied after nickel plating with other metal plating.

2, in some special cases, phosphating can also be used:

(1) Phosphating is simple and easy to use when the NdFeB magnet product is not clear about the subsequent surface treatment method because of its turnover, long storage time;

(2) When the magnet needs epoxy bonding, painting, etc., the adhesive force of epoxy organics such as glue and paint needs the matrix to have the very good invasion performance. The phosphating process can improve the penetration ability of the magnet surface.

(3) Electrophoretic coating has become one of the most widely used anticorrosive surface treatment technologies. Because it not only has good adhesion with the surface of porous magnet, but also has salt spray resistance, acid resistance, alkali resistance and other corrosion resistance, excellent corrosion resistance. But compared with spray coating, it has poor moisture and heat resistance.

Customers can choose coatings according to their product requirements. With the expansion of the field of motor application, customers have higher requirements for the corrosion resistance of NdFeB. The HAST test (also known as PCT test) is specially designed to test the corrosion resistance of sintered neodymium permanent magnets in humid and high temperature environment.

And how do customers determine whether the coating meets the requirements?

The purpose of salt spray test carried out by Nd-Fe-B manufacturer is to do fast corrosion protection test on sintered neodymium magnet with anti-corrosion coating. At the end of the test, the sample is taken out from the test box and dried. The color change of the box with or without speckles and speckle area on the surface of the sample is observed by eyes or magnifying glass.

Why do neodymium magnets appear rust spots and how to avoid them?

After a period of time, the surface of neodymium magnet will appear white or other colors of spots, slowly develop into rust spots, under normal circumstances, electroplated magnet coating is not easy to appear rust spots, rust spots generally occur due to the following reasons:

Magnets are stored in damp, airtight, and temperature changing areas.
The dirt on the surface of the magnet before plating is not well cleaned.
Plating time is not enough or process problems.
The magnetic oxidation of the magnet caused by the breakage of the packaging seal.

Under normal conditions, rust stains should not appear on the surface of magnet electroplating coatings. NdFeB magnet should avoid the following safekeeping methods:

In areas with excessive humidity and poor air circulation, rust stains may occur even when the temperature difference varies considerably, even if the salt spray test qualified products are stored in harsh environments for a long time. When the electroplated products are stored in harsh environment, the further reaction between the base layer and the condensate will result in the reduction of the adhesion between the base layer and the coating, and in serious cases, it will also cause local powdering of the substrate, and then natural peeling. Electroplating products should not be placed in a high humidity area for a long time. They should be placed in a cool and dry place.

For more information, please visit https://www.usneodymiummagnets.com/

What are the Types of Magnets?

There are many kinds of magnets, generally divided into permanent magnets and soft magnets.

Permanent magnet is divided into two categories:

The first category is: metal alloy magnets include NdFeB, SmCo and AlNiCo magnets.

The second category is ferrite permanent magnet.

1. Neodymium-iron-boron magnet: It is the most commercially available magnet, known as the magnet king, with extremely high magnetic properties, its maximum magnetic energy product is more than 10 times higher than that of ferrite. Its mechanical properties are quite good. The working temperature can reach up to 200 degrees Celsius. Moreover, its texture is hard, its performance is stable, and its cost performance is very good, so its application is extremely extensive. But because of its strong chemical activity, the surface layer must be treated.

2. Ferrite magnet: its main raw materials include BaFe12O19 and SrFe12O19. It is a brittle material with hard texture. Ferrite magnet has been widely used because of its good temperature resistance, low price and moderate performance.

3. Aluminum nickel cobalt magnet: an alloy consisting of aluminum, nickel, cobalt, iron and other trace metals. The casting process can be made into different sizes and shapes, with good workability. The cast aluminum nickel cobalt permanent magnet has the lowest reversible temperature coefficient, and the working temperature can reach up to 600 degrees Celsius. Al Ni Co permanent magnet products are widely used in various instruments and other applications.

4. Samarium cobalt (SmCo) is divided into SmCo5 and Sm2Co17 according to their components. Because of the high price of materials, their development is limited. SmCo, as a rare earth permanent magnet, not only has a high magnetic energy product, reliable coercivity, and good temperature characteristics. Compared with NdFeB magnets, samarium cobalt magnet is more suitable for working in a high-temperature environment.