Maglastic

Chase Technology is a market-oriented comprehensive technology company with the core competence of innovation and trained talents. The company focuses on the development and production of magnetic functional compounds and providing our customers with more cost-effective and reliable magnet solutions. Chase technology is a national high-tech enterprise, which was founded in 2011 and located in Hangzhou, Zhejiang China. The company focuses on application-oriented consultation and the development and production of functional composite materials, and has In-depth research and extensive project experience, especially in injection molding permanent magnet, soft magnetic bonded compounds, microwave absorbing materials, etc. In addition to supplying relevant raw materials, we pay more attention to providing our customers with more cost-effective and reliable functional composite material solutions. https://www.maglastic.com/

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What is Ferrite Magnet?

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Many people may have heard of ferrite magnet in their lives, but they don't know what they are. Today, I will give you a detailed introduction to what is ferrite magnet.

 The main raw materials of ferrite magnet include SrO or BaO and Fe2O3. Ferrite magnet is a sintered permanent magnet material composed of barium and strontium ferrite. In addition to strong anti-demagnetization performance, this magnetic material also has the advantage of low cost. The magnet of the opposite sex must be magnetized in the direction taken because it is oriented along the manufacturing direction; while the magnet of the same sex can be magnetized in any direction because it has no orientation, although a slightly stronger magnetic induction is often found on the side where the pressure is the smallest. Due to low cost, moderate performance, and good temperature resistance, ferrite magnet have a wide range of applications, from motors and speakers to toys and crafts. Therefore, it is currently the most widely used permanent magnet material.

 1. Classification of Ferrite Magnet

According to different production processes, ferrite magnet is divided into sintering and bonding. Among them, sintering is divided into dry pressing type and wet pressing type, and bonding is divided into extrusion molding, compression molding and injection molding. Injection magnets are a type of magnet that has grown rapidly in recent years due to its advantages such as low energy consumption, short molding cycle, suitable for mass production, free magnetic pole orientation, and easy molding of complex devices.

 According to whether an external magnetic field is applied during molding, it can be divided into isotropic permanent magnets and anisotropic permanent magnets. The magnetic properties of isotropic sintered ferrite magnets are weak, but they can be magnetized in different directions of the magnet; while the anisotropic ferrite magnet has strong magnetic properties, but can only be magnetized along the predetermined magnetization direction.

 The soft, elastic and twistable magnet made of bonded ferrite powder and synthetic rubber is also called rubber magnet.

 2. Performance Characteristics of Ferrite Magnet

Ferrite magnet is characterized by high coercivity and low remanence in performance. Ferrite magnet has high coercivity as well as strong anti-demagnetization ability, and is suitable for working in dynamic magnetic circuit environments with large temperature changes.

 The ferrite magnet is hard and brittle and can be cut with emery tools.

The main raw material is oxide, so it is not easy to corrode and generally does not require plating.

 Working temperature: -40℃ to +300℃.

 We hope that you can better understand what is a ferrite magnet through the above description.

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The Difference between Soft and Hard Magnetic Materials

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Among the magnetic materials, permanent magnetic materials are also called "hard magnetic materials", which are materials that can maintain constant magnetic properties once they are magnetized. Commonly used permanent magnet materials include AlNiCo permanent magnet alloys, FeCrCo permanent magnet alloys, permanent magnet ferrites, rare earth permanent magnet materials and composite permanent magnet materials.

 Soft magnetic materials are magnetic materials with low coercivity and high permeability. They are easy to magnetize and demagnetize. Their main function is to conduct magnetic and electromagnetic energy conversion and transmission. They are widely used in various electric energy conversion equipment. Soft magnetic materials mainly include metal soft magnetic materials, ferrite soft magnetic materials and other soft magnetic materials. The most widely used soft magnetic materials are iron-silicon alloys (silicon steel sheets) and various soft ferrites.

 The main difference between hard magnetic materials and soft magnetic materials is that hard magnetic materials have high anisotropy field, high coercivity, large hysteresis loop area, and large magnetic field required for technical magnetization to saturation. Due to the low coercivity of the soft magnetic material, it is easy to demagnetize after the technical magnetization reaches saturation and the external magnetic field is removed, while the hard magnetic material due to the high coercivity, after the technical magnetization to saturation and the magnetic field is removed, it will remain long-term very strong magnetism, so hard magnetic materials are also called constant magnetic materials.

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The Application of Injection Molded Magnets in Automobile and Industrial Fields

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Injection magnet is a permanent magnet made of plastic (adhesive) mixed with permanent magnet powder. It has the characteristics of stable magnetism, impact resistance, low density, easy forming and processing and so on, which can replace metal magnet to make permanent magnetic products with high dimensional accuracy, complex shapes and light weight. As a kind of bonded permanent magnet, this article mainly introduces its application in the industrial and automobile fields.

 The application of injection molded magnet in the industrial field is mainly manifested in printing equipment and micro special motor:

 Printing equipment

 The mass fraction of ferrite magnetic powder of xerographic injection molded magnetic roller can reach up to 90%. At present, the adhesive for manufacturing injection molded magnetic roller is mainly nylon resin with high temperature resistance and aging resistance. The magnetic powders are mainly strontium ferrite + barium ferrite, aluminum iron boron, neodymium iron boron as well as rare earth and other magnetic powders, among which, ferrite magnetic powders are widely used, and rare earth ferrite and neodymium iron boron magnetic powder have better application prospects.

 Micro special motor

 High-performance injection molded magnet DC motors, especially three-slot motors, CPU fan motors and brushless motors are widely used, the main reasons are: they have the characteristics of good injection molded, magnetic and chemical stability, high resistivity, which are suitable for high-frequency conversion, also, they have certain elasticity, and not easy to crack and break.  What's more, they have good processing performance and can be made into products of different shapes and sizes, which are easy to punch, cut, perforate and wind as well as have high assembly and magnetization efficiency.

 The application of injection molded magnets in the automobile field is mainly manifested in automobile parts:

 In automobiles, the micro special motor is mainly used for measuring instrument and sensing system,for example, the tire sidewall torque measurement device uses a magnetic injection strip as a signal collection accessory (data on the force between the tire and the road surface), and is also used in the motor of the starting device.

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Permanent Magnet Materials Are Used in Motors

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Permanent magnets are widely used in our lives. Many people are curious about what are made out of permanent magnets? Most permanent magnets are used in the manufacture of various types of permanent magnet motors, the large ones are exciters, auxiliary exciters, generators in airplanes; the small ones are floppy and hard drive motors used in computers, printing motors, VCD and DVD CD motors, bicycle motors and car motors, hundreds of millions of toy motors and so on. These are all the examples of permanent magnets in everyday life.

 The earliest invented motor used permanent magnets to provide magnetic flux to the air gap between the rotor and the stator. At that time, the energy density of permanent magnet materials was very small, and the power (output) of the motor was too small to meet the requirements, so people turned to current to generate magnetic flux. The torque of a motor is proportional to the current and also proportional to the magnetic flux. The power of the motor is equal to the product of the torque and the speed. Using current to generate magnetic flux consumes more electrical energy, while using permanent magnets to provide magnetic flux can save electrical energy. Therefore, with the progress of permanent magnet materials, there are more and more permanent magnet motors. Recently, with increasing calls for environmental protection and energy conservation, some countries have been researching and developing permanent magnet motors for electric vehicles to replace ordinary motors below 500kW.

 The permanent magnets used in permanent magnet motors are mainly sintered and injection molded. In order to reduce weight and improve efficiency, small and micro motors with lower power generally choose injection molded permanent magnets. Injection molded ferrites are also easy to shape design to meet Motor use requirements.

 During the operation of the motor, the permanent magnet is periodically subjected to the demagnetizing field; at the same time, the energy loss of each part of the motor eventually becomes heat, which makes the temperature of the motor reach a high temperature when it reaches a thermal equilibrium. Therefore, the permanent magnet material used in the motor must have a high intrinsic coercivity and critical magnetic field.

 During the operation of the motor, the centrifugal force received by the permanent magnet is very large. Centrifugal force is tensile stress, and the tensile strength of permanent magnet materials is not high. In this regard, people have made efforts in two aspects:

 (1) The compressive stress on the permanent magnet is greater than the tensile stress in the motor structure;

 (2) The tensile strength of the injection molded permanent magnet is greater than that of the sintered permanent magnet, and many motors adopt it.

[maglastic]

Magnetic Materials in Permanent Magnet Motors

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Permanent magnet motors use permanent magnets to generate the magnetic field of the motor. It does not require an excitation coil or excitation current. It is a good energy-saving motor because of its high efficiency and simple structure. With the rapid development of various motors and the invention of current magnetizers, people have conducted in-depth research on the mechanism, composition and manufacturing technology of permanent magnet materials. A variety of permanent magnet materials such as carbon steel, tungsten steel, and cobalt steel have been discovered one after another. The magnetic material used in permanent magnet are neodymium iron boron, samarium cobalt and ferrite.

 The neodymium iron boron permanent magnet materials are called the "magnet king", and it was discovered in 1983. It has been 37 years since China and Europe and the United States simultaneously started industrialization in Japan in 1985. NdFeB permanent magnets are tetragonal crystals formed of neodymium, iron, and boron. According to different production processes, they can be divided into sintered NdFeB, bonded NdFeB and hot-pressed NdFeB. Due to different production processes, they have big differences in magnetic properties of product, post-processing and applications.

 Samarium cobalt permanent magnet material is a kind of rare earth permanent magnet, which is made of rare earth elements samarium, cobalt and other elements after proportioning. It has a high magnetic energy product and a very low temperature coefficient, with a maximum operating temperature of 350°C. Compared with neodymium iron boron, samarium cobalt permanent magnets are more suitable for working in high temperature environments. It can still maintain good temperature stability and chemical stability above 180°C. At the same time, it has strong corrosion and oxidation resistance. Therefore, it is widely used in aerospace, defense and military industry, microwave devices, communications, medical equipment, various magnetic transmission devices, sensors, magnetic processors, motors, magnetic cranes and so on.

 Ferrite permanent magnet materials are also called hard ferrites. This material has high coercivity and is not easy to demagnetize after magnetization. The raw materials for the preparation of permanent ferrites are mainly strontium oxide or barium oxide and iron trioxide (other chemical components such as cobalt (Co) and lanthanum (La) will be added to some specific high grades to improve their magnetic properties). Permanent ferrite is generally a magneto plumbite structure, which is mainly used for speakers, earphones, motors and various instruments.

 The use of injection molded ferrite, injection molded NdFeB and other injection molded magnetic materials in permanent magnet motors has gradually increased. It has been widely used in sensors, motor magnets and other fields, providing new design solutions for motor design, especially in the field of small and micro motors.

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Magnetic Materials and Their Characteristics

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In childhood, magnets were one of our favorite toys. We always played with them and were amazed by their peculiar characteristics. Two magnets always have two sides that can attract each other, and two sides will always repel each other. We always split them up and down. In middle and high school, we learned from the knowledge that the compass leveraged the theory of magnetism.

 Now in our lives, different magnetic materials are used in many places. So today we come to understand its characteristics.

 Characteristics of magnetic materials:

 1. Magnetic materials will produce strong or weak magnetic fields under the action of external magnetic fields. Its magnetic field strength is marked out in a table, showing a regular curve. And although this kind of magnetic field is not substantial, if you place a piece of magnetic material on the ground and sprinkle some magnetic powder around it, its magnetic field will be represented by the magnetic powder.

 2. The magnetic properties of magnetic materials will vary with the temperature. When the temperature of a magnetic material increases, its magnetism will decrease, and when the temperature increases to a certain level, its own magnetic function will disappear.

 3. The resistivity is relatively high. The resistivity of magnetic materials is higher than that of ordinary metals and can be used in fire protection systems in circuits.

 Magnetic materials are now widely used in production, life, and national defense science and technology. It is also widely used in various motor starting systems, transformer pressure systems, and made into magnetic components, etc. Moreover, the new magnetic material products can also be produced through extrusion, calendering, injection molding and other processes like ordinary plastics, and can also be made into flexible products that can be used in different occasions.

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Home Appliances Bonded Magnetic Compound

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Aiming at the demand of energy-saving and intelligent home appliances, we are committed to improving solutions about man-machine interaction, noise reduction, and energy saving. Our products can be used in brushless DC motor, sensors.

 1.

 Home-Appliances

 As a typical application case of a bonded magnetic compound, a magnetic roller for the printer is the main component that carries toner in the printer. Comparing to the traditional sintered magnetic material, the magnetic roller made of bonded magnet can realize with multiple radial poles, like 4poles, 5poles, 6poles. Furthermore, the length to diameter ratio of the magnetic roller can reach to more than 30, which can not be realized in the sintered magnetic material. The magnetic roller made of the magnetic compound through injection molding or extrusion greatly improve production efficiency, and have the advantages of good dimensional consistency, uniform magnetic field distribution, and excellent mechanical properties. It achieves high-quality development effects for printers.

 2.

 Home-Appliances-1

 The rotor for the bladeless fan that made of injection molding magnetic compound can solve the sintered ferrite rotor’s issues, like complicated processing and brittleness of the finished products. The recommended material is ferrite/PA12 compounds. The insert molding process realizes efficient production and improves the cracking problem of sintered magnetic rings during the second injection. The bonded ferrite has excellent mechanical properties and will not be easily cracked during transportation and assembly. The rotor made of ferrite compound guarantees the uniformity of dimension and magnetic properties for each product, thereby improving the noise and vibration problems of the motor.

 3.

 Home-Appliances-2

 The rotor with radial and quadrupole magnetization for the freezer. Comparing to the sintered arc magnet that pasted by glue, the rotor made by injection reduces the need for complicated manual processes. The injection molding process ensures reliability and avoids the hidden danger of falling off during motor operation. The recommended material is ferrite/PA12 compounds. As the diversity of magnetic pole orientation for the rotor made of the magnetic compound, we use a special magnetic field waveform design, which makes the product with driving and induction effect. Because of injection molding, the uniform of dimension and magnetic field distribution make the motor with excellent dynamic balance. And it finally makes the motor with low noise and stable operation.

 4.

 Home-Appliances-3

 The rotor of electronic expansion valve in the thermal management system. The electronic expansion valve (EEV) controls the flow of refrigerant entering a direct expansion evaporator. It plays an important role to reduce energy consumption. With small size, multiple poles, high precision in dimension, EEV has the requirement of not cracking in high and low-temperature environments for a long time using in the refrigerant . The rotor that made of bonded ferrite/PPS or NdFeB/PPS will meet those requirements. Ferrite/PPS series ((BH) max = 1.6MGOe) is applied to the rotor with low power, and NdFeB/PPS series ((BH) max = 2-8MGOe) is recommended to use in the EEV rotor with high power. With the increasing demand for automotive thermal management systems, we are also constantly developing the magnetic compound with higher magnetic performance, higher cost-effective and lower demagnetization rates at high and low temperatures to meet the design requirements of the new generation of EEV rotors.

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High Performance NdFeB: the Strongest Magnetic Permanent Magnet Material Up to Now

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1. Classification of magnetic materials

At present, magnetic materials are mainly divided into permanent magnet materials and soft magnets. The magnetism of permanent magnet materials can be permanently preserved, mainly including alloy permanent magnet materials represented by neodymium iron boron and ferrite permanent magnet materials.

 The magnetism of soft magnets can be magnetized by external action, but the magnetism is also easy to disappear.

 Neodymium iron boron (NdFeB) is a third-generation rare earth permanent magnet material, mainly composed of neodymium, iron, and boron. Among them, neodymium accounts for 25% to 35%, iron accounts for 65% to 75%, and boron It accounts for about 1%. NdFeB has the advantages of high remanence, high coercivity and high magnetic energy product, and is by far the strongest magnetic material in permanent magnetic materials.

 Compared with ferrite, NdFeB has a higher magnetic energy product, and at the same time its stability is stronger and its magnetic force is more controllable.

 With the continuous development of the global new energy automobile and robot industry, injection molded NdFeB is expected to become the main development direction of magnetic materials in the future.

 2. Classification of NdFeB

According to the production process, NdFeB can be divided into sintered NdFeB and bonded NdFeB. Sintered NdFeB adopts powder metallurgy technology. The alloy after smelting is made into powder and pressed in a magnetic field; NdFeB is made of NdFeB magnetic powder and resin through injection molding after extruding and granulating. Compared with sintered NdFeB, bonded NdFeB has better corrosion resistance, can be processed into products of various shapes, low energy consumption and suitable for mass production.

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Different Types of Permanent Magnet Materials

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Permanent magnetic materials are also called hard magnetic materials. It is characterized by high anisotropy field, high coercivity, large hysteresis loop area, and large magnetization field required for magnetization to saturation. After removing the external magnetic field, it can still maintain strong magnetism for a long time. The material of permanent magnet has ferrite, rubber magnet, injection magnet, samarium cobalt, neodymium iron boron magnets, and alnico.

 1. Ferrite

 Ferrite is a non-metallic magnetic material. Ferrite compound can also be called magnetic ceramics. When we take apart the traditional radio, the speaker magnet inside is made of ferrite.

 2. Rubber magnet

 Rubber magnets are one of the ferrite magnet series. It is a soft, elastic and twistable magnet made of bonded ferrite magnetic powder and synthetic rubber compounded by extrusion molding, calendering molding, injection molding and other processes. Therefore, it can be processed into strips, rolls, sheets, blocks, rings and various complex shapes.

 3. Injection magnet

 Injection magnets are a kind of magnets that are firstly mixed and pelletized by polymer resin and magnetic powder through an extruder, and finally injection molded. Its toughness is good. It can not only be machined, but also can be directly injected into various complex parts.

 4. Samarium cobalt

 Samarium cobalt magnets are mainly composed of samarium and cobalt. Since these two materials are expensive, samarium cobalt magnets are also the most expensive among several types of magnets. The energy product of samarium cobalt magnets can currently reach 30MGOe, or even higher. In addition, samarium cobalt magnets have high coercivity and high temperature resistance. It can be used at high temperature of 350 ℃. Therefore, it cannot be replaced in many applications.

 5. Neodymium iron boron

 Neodymium magnet material is a magnet product that is widely used and developed rapidly. NdFeB has only been widely used since its invention for more than 20 years. The price is not very high because of its high magnetic properties and easy processing, so its application field is expanding rapidly.

 6. Aluminum nickel cobalt

 AlNiCo magnets have two processes: casting and sintering. The magnetic energy product of AlNiCo can reach 9MGOe. In addition, its biggest feature is high temperature resistance, and its working temperature can be as high as 550 degrees Celsius. However, AlNiCo is very easy to demagnetize under a reverse magnetic field. If you push the same poles of two AlNiCo (two N or two S) together, the magnetic field of one of the magnets will be returned or reversed. Therefore, it is not suitable for working in a reverse magnetic field (such as a motor).

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Common Magnetic Materials in Permanent Magnets

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The magnetic materials used in permanent magnets are AlNiCo, ferrite permanent magnet materials and rare earth permanent magnet materials.

 Al-Ni-Co alloy is developed from Al-Ni-Fe alloy. AlNiCo magnets have low coercivity, so any iron should be strictly prohibited from contacting AlNiCo permanent magnet materials during use to avoid local demagnetization of permanent magnets and distortion of the magnetic flux distribution in the magnetic circuit. The advantage of AlNiCo magnets is that the temperature coefficient is small, and the degradation of permanent magnet characteristics due to temperature changes is also small. However, the material is hard and brittle, so its processing is difficult. The main applications of AlNiCo are in electronic ignition systems, watt-hour meters, voltammeters, medical instruments, industrial motors and other fields.

 Ferrite permanent magnet material is one of the most widely used permanent magnet materials, and its main component is MoFe2O3. It has the advantages of large coercive force, light weight, abundant source of raw materials, low price, oxidation resistance, corrosion resistance, large anisotropy constant of the magnetic crystal, and its demagnetization curve is approximately a straight line. And its disadvantages are that the remanence is low, the temperature coefficient is large, and it is fragile. The coercivity of ferrite permanent magnet materials is between that of AlNiCo alloy materials and rare earth cobalt permanent magnet materials. Since its low remanence, it is generally suitable to be designed into a flat shape. Ferrite magnetic materials are mainly used in fields such as motors, speakers, toys, and handicrafts.

 Rare earth permanent magnetic materials have the advantages of high coercivity, large maximum magnetic energy product, and reversible permeability. Therefore, their magnetic properties far exceed other magnetic materials such as ferrite and AlNiCo. The emergence of rare earth permanent magnet materials has led to the emergence of permanent magnet synchronous motors with light weight and small size, thus expanding the application range of permanent magnet synchronous motors. The rare earth cobalt permanent magnet material has excellent performance. However, its price is relatively high, so it is necessary to make careful calculations when designing, and strive to achieve the desired effect with the smallest volume. Due to the high coercivity of rare earth cobalt permanent magnet materials, it can be made into sheet permanent magnet materials to reduce volume and save materials.

 The performance of injection molded ferrite and injection molded rare earth materials is lower than that of sintered materials. However, due to its unique advantages, it has gradually replaced sintered permanent magnet materials as new permanent magnet materials in small and micro motors, sensors and other fields.

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Soft Magnetic Bonded Compounds

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As a new material, soft magnetic bonded compounds can be used for extrusion or injection molding and are especially suitable for high-frequency high-speed stator, 5G base station, transformer skeleton applications, it is helpful for the device to be small and lightweight, to reduce energy consumption and improve electromagnetic compatibility, etc.

 We provide soft ferromagnetic materials,soft magnetic composite materials, 5G magnetic plastic at competitive price, feel free to contact!

 Properties of Soft Magnetic Bonded Compounds

 Unidirectional high permeability can be achieved by flake-shape powder orientation.

 The saturation magnetization of sintered ferrite can be achieved by using metal soft magnetic materials.

 High design freedom in part structure can be designed with a sintered soft magnetic core together.

 Applications of Soft Magnetic Bonded Compounds

Microwave absorbing material, inductor, wireless charging, and other electric-magnetic switching devices.

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Other Functional Maglastic Materials You May Like

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High density and metal bonded plastic functional composite materials with complex and delicate structures can also be prepared by the injection molding process. Density can be adjusted as required from 2-13 g/cm3, which can replace some traditional aluminum alloy, zinc alloy, stainless steel, and other materials with metallic texture. Its environmental advantage and shielding function of high-energy ray (X-ray, etc) make it suitable to replace the traditional lead metal alloy. It has high dimensional precision and excellent mechanical properties, which is suitable for processes such as turning, milling, drilling, and so on.

 High-Density Compounds

High density products, or high gravity compounds can be prepared by traditional injection molding process. Density can be adjusted as required from 2-13 g/cm3. Excellent mechanical properties, lead-free, environment-friendly and low cost make it possible to replace some metal products.

Metal Bonded Plastic

Products with complex and delicate structures can be prepared by the traditional injection molding process. A metallic appearance can be obtained by surface polishing, which makes it possible to replace some metal products.

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Magnetic Solution For Famous Customers

https://www.maglastic.com/products/magnet-solutions/

We can provide customers with appropriate mold design scheme (magnetic circuit design and mold-flow analysis) and optimization processing parameter based on the material characteristics to obtain the best performance of the material, we also cooperate with our customer to analyze and improve the problems encountered in the production process.

 Q: Is it possible to provide products with appropriate performance according to injection magnet samples?

A: we have a range of test equipment that can quickly determine the resin matrix and magnetic properties of samples, and recommend suitable materials for you. 

 Q: What if the material properties I need are not in the catalog?

A: Please don't hesitate to contact us, our professional R&D teams can make customized grade materials according to customer's needs.

 Q: What do the magnetic properties of bonded magnetic compounds depend on?

A: volume fraction, orientation degree, and type of magnetic powder determine the magnetic properties of bonded magnetic compounds. We will recommend appropriate injection molding parameters to ensure the maximum performance of our material.

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Hybrid Bonded Magnetic Compounds

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Hybrid Bonded Magnetic Compounds Introductions：

By mixing different kinds of magnetic powder in different proportions, we can obtain a series of hybrid magnets whose magnetic properties are higher than ferrite bonding magnet and lower than bonded neodymium (anisotropic) magnet, which can meet the customized application demands and reduce the cost.

 Properties of Hybrid Bonded Magnetic Compounds：

 High corrosion resistance than that of bonded neodymium magnet.

  Thermal demagnetization properties change little with temperature

  High-cost performance.

  Applications of Hybrid Bonded Magnetic Compounds：

Motor rotor; magnetic ring; sensor; etc.

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High-Density Compounds

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High-density plastic has a density of up to 13g/cm3 by adding high-density powder to the plastic matrix, which is higher than that of ordinary metal. It can be used as a shielding enclosure for high-energy rays, counterweight material, substitute material for lead, etc.

 Properties of Soft Magnetic Bonded Compounds

 Less production process and suitable for automatic production

 The product is energy-efficient and harmless to the environment

 Applications of Soft Magnetic Bonded Compounds

Counterweight material (counterweight of automobile, imitation gun, golf equipment, etc.); Medical industry.

[maglastic]

Hard Magnetic Bonded Compounds

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Hard-Ferrite Bonded Magnetic Compounds

Compared to rare earth magnetic materials, hard ferrites has obvious cost advantage due to the use of cheap strontium oxide, barium oxide and iron oxide as raw materials. In addition, ferrite has high stability and curie temperature, which makes it the most widely used permanent magnetic materials. Maximum energy product (BH)max of our bonded ferrite magnets range from 0.5 to 2.3 MGOe. Based on the different polymer matrix, our ferrite bonded magnet compounds for sale are mainly divided into FA series (nylon 6), FB series (nylon 12) and FC series (PPS), which can meet customers' different demands of operating temperatures and mechanical properties.

 Bonded Neodymium Magnetic Compounds

As rare earth permanent magnetic material, Neodymium-Iron-Boron has been widely used in modern industry and electronic technology due to its high magnetic energy product and coercivity, thus it is possible for miniaturization and lightweight of some electromagnetic conversion equipment. The use of large amounts of element neodymium is the main reason for the high price of NdFeB. We have isotropic (NB/NC series) and anisotropic (HNB series) bonded neodymium magnetic compounds. The maximum energy product (BH)max of our bonded NdFeB magnetic compounds ranges from 2.5 to 14 MGOe.

 Hybrid Bonded Magnetic Compounds

Different kinds of magnetic powder (Ferrite, NdFeB, or SmFeN) are mixed evenly in different proportions, then kneaded with thermoplastic resins to form magnetic compounds. Products with an extensive range of magnetic properties and relatively reasonable cost can be achieved. Maximum energy product (BH)max of NFB, NFC, and HSFB series products range from 2 to 5MGOe, which is the same level of magnetic properties as a sintered ferrite magnet but more reasonable in price. The (BH)max of HSNB series products ranges from 10 to 12MGOe, which can replace some bonded neodymium magnetic compounds to reduce the cost.

 Bonded SmFeN Magnetic Compounds

Samarium-Iron-Nitrogen magnetic material uses the Rare-earth Sm element which is relatively abundant instead of the currently expensive and scarce elements of Nd, Dy, Co, etc. Thus, the risk of price fluctuations in procurement is smaller due to the stability in the supply and price of raw materials. Our bonded SmFeN compounds mainly include HSB series. We have entire preparation processes from the SmFeN powders to the magnetic compounds. The strict control of the production processes ensures that the products meet the needs of customers.

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Hard-Ferrite Bonded Magnetic Compounds

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Light density and low cost of ferrite bonded magnetic compounds (hard ferrite magnets) create a high-cost performance. Therefore, it has the largest market demand and is the most extensively used in the field of modern home appliances, office supplies, communication devices, and defense.

 The orientation magnetization process can be completed in the process of injection molding, furthermore, insert molding can also be used to achieve the required products, those can reduce the subsequent process and total system cost.

 The high resistivity of hard-ferrite bonded magnets results in low eddy current loss, which can be used for high-speed motor.

 As an experienced ferrite magnet supplier, Chase provide high quality hard ferrite magnets, feel free to contact us.

 Properties of hard-ferrite bonded magnetic compounds：

 Excellent mechanical properties make it more resistant to crack.

 The thermoplastic resin utilized is capable of the operating temperature of -40-200℃.

 Excellent corrosion resistance makes it suitable for various requirements of the environment.

 Good temperature stability and resistance to thermal demagnetization.

 Applications of hard-ferrite bonded magnetic compounds：

Magnetic roller for the printer; magnetic encoder; cooling water bump; motor rotor; sensor; etc.