1 thought on “"Magnetic King" —— iron boron -Chaoyang industry in rare earth permanent magnet materials”
Rufus
Due to its excellent magnetic properties and high cost -effectiveness, since the introduction of its excellent magnetic properties and high cost -effectiveness, its output value accounts for 90%of the output value of the world's rare earth permanent magnet material, and as preparation is prepared The continuous improvement of crafts and production technology has continued to improve, and its application areas are gradually expanding. Therefore, the amount of application amount of ravioli boron permanent magnet materials has become a sign of the level of modernization. The 钕 Iron Boron permanent magnet material is still the rising industry in the rare earth material industry. Today, I will get to know this new material with Xiaobian.
The development of permanent magnet materials and its development The permanent magnet material refers to a functional material that is magnetized to saturated under the action of external magnetic fields and can still maintain its magnetic field after removing the external magnetic field. Known as permanent magnet materials or hard magnetic materials, in general, it is often called "iron absorption". The "Sinan" invented as early as the Warring States Period was used to identify the direction of the magnetic guide. ?? It Figure 1 Sinan Although humans have known magnetic materials for more than 2,000 years, the artificial permanent magnet began in the ten centuries of magnetic steel needle, magnetic The development and application of materials began in the late 19th century. At the beginning of the twentieth century, people mainly used tungsten steel, carbon steel, chromium steel and cobalt steel as permanent magnet materials. In the late 1930s, Alnico (aluminum nickel cobalt) permanent magnet materials were successfully developed, and permanent magnet materials began to be widely used. In the 1950s, iron oxygen appeared, reducing the cost of permanent magnet, and at the same time broaden the scope of the application of permanent magnet materials to the high -frequency field. By the 1960s, the rare earth and cobalt permanent magnets were successfully developed, and the application of permanent magnets has entered a new era. In 1967, STRNAT, the University of Dayton, was successfully made into SMCO5 permanent magnets, marking the arrival of the era of rare earth permanent magnets. So far, the rare earth permanent magnet material has been developed from the first generation 1: 5 SMCO5, and the second-generation sedimentary sclerosis SM2CO17 has developed to the third-generation ND-Fe-B permanent magnet material. In addition, the historically used as permanent magnet materials is CU-NI-FE, Fe-CO-V, Fe-CO-MO, A1MNC, MNBI alloy, etc. These alloys are poorly effective and cost-effective due to poor performance and cost-effectiveness. Low, it is rarely used on most occasions. FECRCO, Alnico, PTCO and other alloys are still applied to some special occasions. BA and SR iron oxygen are still the most permanent magnet material at present, but it is gradually replaced by ND-FE-B materials in many applications. The current output value of rare earth permanent magnet materials has far exceeded the permanent echoxymia Magnetic materials, the production of rare earth permanent magnet materials has developed into a large industry. ND-FE-B has become the most widely used rare earth permanent magnet material, and it is also the most magnetic permanent magnet material to date. ? The development history of the permanent magnet material (1990-2015) two The characteristics and advantages of 钕 iron boron Rare earth metal tadpoles, metal element iron, non -metallic element boron, and a small amount of rare earth permanent magnetized compounds composed of elements, crickets, crickets, aluminum, crickets, copper and other elements. It is simply a magnetic steel, also known as magnetic steel.性 钕 钕 体 钕 钕 钕 钕 钕 钕 钕, light and low quality and low quality, wide application range, known as the "magnetic king", is the most cost -effective magnet material to date. This iron boron permanent magnet has large magnetic crystals, with high magnetic polarization strength, the theoretical magnetic energy accumulation is 64mgoe, and its magnetism is more than 100 times higher than the magnetic steel used by people in the nineteenth century, which is more than 100 times higher than the magnetic steel used by people. The ordinary iron oxygen, aluminum nickel and cobalt are 10 times higher, which is double the magnetic properties of the expensive platinum cobalt alloy. Its stubborn power and energy density are high, which greatly reduces the size of magnetic materials. , Electric motors, computers, mobile phones and other equipment for miniaturization, lightweight, thin, and high efficiency, which improves the performance of the product, and promotes the generation of certain special devices; Cutting and processing; its preparation technology technology is relatively mature, the temperature of the residence is about 580k, and the use temperature can reach 150 ° C; Tie boron was released, and by 2006, the output increased to 55,540 tons. By 2015, it would increase to about 130,000 tons. three The application of the rare earth permanent magnet material of the rare earth n n The emergence of 钕 iron boron permanent magnet materials promoted the progress of human civilization and made great contributions to the development of socio -economic development. Such materials can realize the mutual conversion function of mechanical energy and electromagnetic energy, with magnetic light effects, magnetic resonance effects, magnetic effects, magnetic effects, magnetic biological effects, magnetic resistance effects, and Hall effects. As a result, magnetic functional devices are widely used in computers, transportation, communication, aerospace, industrial automation and medical care. The traditional asynchronous motor used in the industry. When working, the rotor winding must absorb part of the electrical energy inspiration from the grid. This part of the power grid is eventually heated in the rotor winding in the form of a current. The loss of 20-30%reduces the efficiency of the motor. The permanent magnet synchronous motor is embedded with permanent magnet on the rotor, and the rotor magnetic field is established by permanent magnet. When working normally, the rotor and the stator magnetic field are synchronized. The non -sensing current in the rotor is generated. There is no rotor resistance loss. Increase 4%to 50%. Because the permanent magnetic motor rotor is not sensitive, the stator winding may achieve a pure resistance load, which makes the motor power factor almost 1, which greatly improves the quality factor of the power grid, so that the power grid is no longer required to install the compensator. At the same time, due to the efficiency of permanent magnet motors, electricity also saves electric energy. At present, the rare earth permanent magnet motor is the largest application area of the cymbal iron boron magnet, accounting for about 70 % of the total number of magnetic applications. It has many types and different shapes and performance. Computer hard disk supporting audio motor (VCM) accounts for 40 % -50 %, so the computer industry is currently the largest user of permanent magnet motor. Applying the rare soil permanent magnet material of the rare earth in the iron boron to various motors is inspired by permanent magnet. There is no rotor loss and friction. The motor that is not maintained by noise and long life, which significantly reduces the quality of the motor, improves the performance of the motor, and combines new electronic electronics technology, so that the application of rare earth permanent magnet materials in the motor can realize the integration of product electrical and electrical. The magnetic motor entered a new stage of development. The automotive industry is one of the fastest growing areas of the ravioli boron permanent magnet. In each car, dozens of parts such as engines, brakes, sensors, instruments, speakers, etc. can be used for 40-100 NDFEB and SMFEN sintering magnets. It is reported that a fully automatic high -end sedan needs to consume about 0.5kg ～ 3.5kg of rare earth permanent magnet material; the amount of new energy vehicles on the iron boron boron material is more, and each hybrid vehicle (HEV) consumes more than traditional cars. 5KG 硼 iron boron, pure electric vehicle (EV) uses rare earth permanent magnet motors to replace traditional generators, using 5-10kg 钕 iron boron. With the development of the automotive industry and the continuous improvement of electronic technology requirements, its demand for ravioli boron permanent magnet materials will increase. In 2015, my country's "permanent magnet high -speed rail" was successfully trial. After using the rare earth permanent magnet synchronization traction system, due to the direct excitation drive of permanent magnet motor, it has high energy conversion efficiency, stable speed, low noise, small volume, light weight, light weight, light weight There are many characteristics such as reliability and other characteristics, so that the original 8 -section trains have been reduced from 6 carriage equipment to the power of 4 cars, which saves the cost of the traction system of 2 cars and improves the traction efficiency, at least saving the efficiency 10%of electricity, the cost of the entire life cycle of the train decreased. The subway uses the NDFEB rare earth permanent magnet traction motor. The system noise is significantly lower than that of asynchronous motor at low speed. The use of a new closed ventilation motor design structure can effectively ensure the cleanliness and cleaning of the internal cooling system of the motor, eliminating the filter and cleaning problems brought by the naked coils of the previous asynchronous traction motor. The use of direct -drive -driven iron boron permanent magnet motors makes certain rail transits expected to remove gear boxes in the near future, bringing revolutionary changes to the rail transit traction system. The permanent magnet traction has become the mainstream research direction of the next generation of world rail transit trains. In recent years, Magplane LTD (Magplane LTD) has introduced the US magnetic suspension aircraft system in my country. The magnetic suspension aircraft system adopts the permanent magnet of the iron boron to perform a new type of suspended design. It is a new type of ground rail transit system. Each kilometer needs to be equipped with 2 magnetic suspended aircraft (train), and each magnetic suspension aircraft (train) will use about 10 tons of sintering tin iron boron material. By optimizing various types of transportation resources and the technical characteristics of various types of transportation resources, reducing costs and operating costs, the unity of intelligence, large capacity and high -speed unity is achieved. If the magnetic suspension aircraft system is put into the actual application, the short -range traffic system in the city can be integrated with the intercity mid -length transportation system, which will help to achieve the integration of urban complicated transportation systems. In addition, the rare earth permanent magnet material is also used in a large number of magnetic suspension devices such as permanent magnet suspension wind turbine, permanent magnet bias suspension bearing, and magnetic suspension sensing motor. The suspended electromagnetic/permanent magnet composite EMS structure uses the NDFEB permanent magnet. It does not require the refrigeration system, the structure is simple, the cost is low, which can reduce the power consumption of the entire system. The exclusion force is 16 times that of the iron oxygen, and at the same time, the suspension gap can be increased, the accuracy requirements of the track can be reduced, and the reliability of the suspended and the stability of the train operation is enhanced. On October 22, 2004, 32 people can be taken by 32 people and self -developed permanent magnet compensation magnetic suspension techniques. It can be almost zero, the transportation power is equivalent to the current train, and the safety is greatly improved. At present, my country is vigorously promoting the study of permanent magnet suspension trains using the iron boron magnets, which is expected to be a magnetic suspension train line with a speed of about 600km/h in the next few years. Robotics, 3D printing and related intelligent manufacturing have attracted more and more attention. Smart robots have become a major core technology of the human reform world, and driving motors are the core components of robots. Inside the driving system, micro -iron boron magnetic steel is everywhere. There is information to check. At present, the robotic motor permanent magnet synchronous servo motor is the 钕 iron boron permanent magnet motor. The servo motor, controller, sensor and reducer are the core components of the robot control system and automated products. The joint activity of the robot is realized by the driving motor, and it requires a very large power quality ratio to the torque inertia ratio, high starting torque, low inertia and smooth and wide speed regulation range. Especially the robot end actuator (hand claw) should be used as a small amount of light motor as much as possible; when it is required to respond quickly, the driving motor must also have a large short -term overload capacity; higher reliability and stability are the driver driver The prerequisites used in industrial robots in industrial robots. In this regard, rare earth permanent magnet motors are the most suitable. Some agencies calculate that a 165kg welded robot currently needs to consume about 25 kg of high -performance 钕 iron boron. China has also included robots in the national development strategic plan. Chinese and foreign companies have deployed the robot industry in their actions and invested huge financial resources in the field of artificial intelligence and robotics. The appearance of NDFEB magnets in terms of medical treatment has promoted the development and miniaturization of magnetic resonance imaging MRI. The permanent magnet RMI-CT nuclear magnetic resonance imaging equipment used to use iron oxygen permanent magnets in the past, and the magnetic weight was as high as 50 tons. After using the iron boron boron permanent magnet material, each nuclear magnetic resonance imaging instrument only required permanent magnet 0.5 to 3 tons, but the magnetic field The intensity has doubled, which greatly improves the image clarity, and the ingredients of the iron boron permanent magnet have the advantages of minimum land, the minimum magnetic leakage leakage, and the lowest operating costs. As a typical representative of medical robots, rehabilitation robots can help patients perform scientific and effective rehabilitation treatment. High -performance and high -integrated brushless DC motors are key parts of rehabilitation robot motor joints. Magnetic material. The application of rare earth permanent magnets in the field of electron beams is mainly in various mass spectrometers, accelerators and microwave devices. Typical applications are periodic permanent magnets (REPM), electron beams or other particle beams are focused on changing the direction of the forward through the magnet. At present, the US -equipped patriotic air defense missiles can accurately intercept the target, thanks to the use of about 4 kilograms of 钐 cobalt magnets and cymbal iron boron magnets in its guidance system for electron beam focusing. The navigation positioning system of the M1A2 main battle tank uses rare earth magnets, "militia" intercontinental missiles, "trident" missiles, "fish fork" anti-ship missiles, JDAM precise guidance bombs, "hell fire" missiles, "Raptors" F-22, etc. Both use rare earth magnets. Magnetoelectric and electromagnetic instrumental amounts of NDFEB account for about 6%of the total application amount. The application of NDFEB permanent magnet magnetic system is simple and can ensure the general requirements of high magnetic flux utilization and high magnetic flux density in the instrument magnetic system. At the same time, the NDFEB magnetic steel is small and light, which can be made into thin slices, providing the possibility of transformation for the miniaturization and precision of the groove table, wide -angle meter and special shape instrument. In aerospace, from the Shenzhou series of spacecraft and the lunar exploration project Chang'e series satellite to the space rocket, it is inseparable from rare earth permanent magnet materials. Due to its prominent stability, reliability, and highest performance size than its prominent stability, reliability, and highest performance. It, NDFEB is also widely used in other fields such as waxing, electronic communications, CNC machine tools, and home appliances. In the upgrading of the domestic technology technology level and the breakthrough of proprietary equipment, the performance of various rare earth permanent magnet materials developed and produced in my country has approached or reached the international advanced level. With the gradual recovery of the world economy, the demand for high -performance sintering and iron boron in the Americas and Japanese markets has increased. The products of many iron boron magnetic manufacturers in my country have entered Japan, Europe, and the United States. The large -scale replacement of iron oxygen in China and the market for high -end iron boron products in my country, thereby promoting the growth of global iron boron boron. Edit: Zhao Cuilu Fanying (Expert: Zhu Minggang, professor, doctoral supervisor, Zhongguancun Open Laboratory-Advanced Magnetic Materials and Analysis Testing Laboratory, Director of the Steel Research Institute. Experts, members of the Fifth Permanent Magnetic Electric Professional Committee of the China Electricity Technology Society, technical experts of Chinese patent review, technical experts from the National Affairs Committee of China Laboratory. Jiang Ruizheng, lecturer, doctoral student. The preparation molding and performance research of magnetic master phase forever magnet materials. This article is recommended by the China Rare Earth Society, and the original debut of the popular Chinese micro platform.)
Due to its excellent magnetic properties and high cost -effectiveness, since the introduction of its excellent magnetic properties and high cost -effectiveness, its output value accounts for 90%of the output value of the world's rare earth permanent magnet material, and as preparation is prepared The continuous improvement of crafts and production technology has continued to improve, and its application areas are gradually expanding. Therefore, the amount of application amount of ravioli boron permanent magnet materials has become a sign of the level of modernization. The 钕 Iron Boron permanent magnet material is still the rising industry in the rare earth material industry.
Today, I will get to know this new material with Xiaobian.
The development of permanent magnet materials and its development
The permanent magnet material refers to a functional material that is magnetized to saturated under the action of external magnetic fields and can still maintain its magnetic field after removing the external magnetic field. Known as permanent magnet materials or hard magnetic materials, in general, it is often called "iron absorption". The "Sinan" invented as early as the Warring States Period was used to identify the direction of the magnetic guide.
??
It Figure 1 Sinan
Although humans have known magnetic materials for more than 2,000 years, the artificial permanent magnet began in the ten centuries of magnetic steel needle, magnetic The development and application of materials began in the late 19th century. At the beginning of the twentieth century, people mainly used tungsten steel, carbon steel, chromium steel and cobalt steel as permanent magnet materials. In the late 1930s, Alnico (aluminum nickel cobalt) permanent magnet materials were successfully developed, and permanent magnet materials began to be widely used. In the 1950s, iron oxygen appeared, reducing the cost of permanent magnet, and at the same time broaden the scope of the application of permanent magnet materials to the high -frequency field. By the 1960s, the rare earth and cobalt permanent magnets were successfully developed, and the application of permanent magnets has entered a new era. In 1967, STRNAT, the University of Dayton, was successfully made into SMCO5 permanent magnets, marking the arrival of the era of rare earth permanent magnets. So far, the rare earth permanent magnet material has been developed from the first generation 1: 5 SMCO5, and the second-generation sedimentary sclerosis SM2CO17 has developed to the third-generation ND-Fe-B permanent magnet material.
In addition, the historically used as permanent magnet materials is CU-NI-FE, Fe-CO-V, Fe-CO-MO, A1MNC, MNBI alloy, etc. These alloys are poorly effective and cost-effective due to poor performance and cost-effectiveness. Low, it is rarely used on most occasions. FECRCO, Alnico, PTCO and other alloys are still applied to some special occasions. BA and SR iron oxygen are still the most permanent magnet material at present, but it is gradually replaced by ND-FE-B materials in many applications. The current output value of rare earth permanent magnet materials has far exceeded the permanent echoxymia Magnetic materials, the production of rare earth permanent magnet materials has developed into a large industry. ND-FE-B has become the most widely used rare earth permanent magnet material, and it is also the most magnetic permanent magnet material to date.
?
The development history of the permanent magnet material (1990-2015)
two
The characteristics and advantages of 钕 iron boron
Rare earth metal tadpoles, metal element iron, non -metallic element boron, and a small amount of rare earth permanent magnetized compounds composed of elements, crickets, crickets, aluminum, crickets, copper and other elements. It is simply a magnetic steel, also known as magnetic steel.性 钕 钕 体 钕 钕 钕 钕 钕 钕 钕, light and low quality and low quality, wide application range, known as the "magnetic king", is the most cost -effective magnet material to date.
This iron boron permanent magnet has large magnetic crystals, with high magnetic polarization strength, the theoretical magnetic energy accumulation is 64mgoe, and its magnetism is more than 100 times higher than the magnetic steel used by people in the nineteenth century, which is more than 100 times higher than the magnetic steel used by people. The ordinary iron oxygen, aluminum nickel and cobalt are 10 times higher, which is double the magnetic properties of the expensive platinum cobalt alloy. Its stubborn power and energy density are high, which greatly reduces the size of magnetic materials. , Electric motors, computers, mobile phones and other equipment for miniaturization, lightweight, thin, and high efficiency, which improves the performance of the product, and promotes the generation of certain special devices; Cutting and processing; its preparation technology technology is relatively mature, the temperature of the residence is about 580k, and the use temperature can reach 150 ° C; Tie boron was released, and by 2006, the output increased to 55,540 tons. By 2015, it would increase to about 130,000 tons.
three
The application of the rare earth permanent magnet material of the rare earth n n The emergence of 钕 iron boron permanent magnet materials promoted the progress of human civilization and made great contributions to the development of socio -economic development. Such materials can realize the mutual conversion function of mechanical energy and electromagnetic energy, with magnetic light effects, magnetic resonance effects, magnetic effects, magnetic effects, magnetic biological effects, magnetic resistance effects, and Hall effects. As a result, magnetic functional devices are widely used in computers, transportation, communication, aerospace, industrial automation and medical care.
The traditional asynchronous motor used in the industry. When working, the rotor winding must absorb part of the electrical energy inspiration from the grid. This part of the power grid is eventually heated in the rotor winding in the form of a current. The loss of 20-30%reduces the efficiency of the motor. The permanent magnet synchronous motor is embedded with permanent magnet on the rotor, and the rotor magnetic field is established by permanent magnet. When working normally, the rotor and the stator magnetic field are synchronized. The non -sensing current in the rotor is generated. There is no rotor resistance loss. Increase 4%to 50%. Because the permanent magnetic motor rotor is not sensitive, the stator winding may achieve a pure resistance load, which makes the motor power factor almost 1, which greatly improves the quality factor of the power grid, so that the power grid is no longer required to install the compensator. At the same time, due to the efficiency of permanent magnet motors, electricity also saves electric energy.
At present, the rare earth permanent magnet motor is the largest application area of the cymbal iron boron magnet, accounting for about 70 % of the total number of magnetic applications. It has many types and different shapes and performance. Computer hard disk supporting audio motor (VCM) accounts for 40 % -50 %, so the computer industry is currently the largest user of permanent magnet motor. Applying the rare soil permanent magnet material of the rare earth in the iron boron to various motors is inspired by permanent magnet. There is no rotor loss and friction. The motor that is not maintained by noise and long life, which significantly reduces the quality of the motor, improves the performance of the motor, and combines new electronic electronics technology, so that the application of rare earth permanent magnet materials in the motor can realize the integration of product electrical and electrical. The magnetic motor entered a new stage of development.
The automotive industry is one of the fastest growing areas of the ravioli boron permanent magnet. In each car, dozens of parts such as engines, brakes, sensors, instruments, speakers, etc. can be used for 40-100 NDFEB and SMFEN sintering magnets. It is reported that a fully automatic high -end sedan needs to consume about 0.5kg ～ 3.5kg of rare earth permanent magnet material; the amount of new energy vehicles on the iron boron boron material is more, and each hybrid vehicle (HEV) consumes more than traditional cars. 5KG 硼 iron boron, pure electric vehicle (EV) uses rare earth permanent magnet motors to replace traditional generators, using 5-10kg 钕 iron boron. With the development of the automotive industry and the continuous improvement of electronic technology requirements, its demand for ravioli boron permanent magnet materials will increase.
In 2015, my country's "permanent magnet high -speed rail" was successfully trial. After using the rare earth permanent magnet synchronization traction system, due to the direct excitation drive of permanent magnet motor, it has high energy conversion efficiency, stable speed, low noise, small volume, light weight, light weight, light weight There are many characteristics such as reliability and other characteristics, so that the original 8 -section trains have been reduced from 6 carriage equipment to the power of 4 cars, which saves the cost of the traction system of 2 cars and improves the traction efficiency, at least saving the efficiency 10%of electricity, the cost of the entire life cycle of the train decreased.
The subway uses the NDFEB rare earth permanent magnet traction motor. The system noise is significantly lower than that of asynchronous motor at low speed. The use of a new closed ventilation motor design structure can effectively ensure the cleanliness and cleaning of the internal cooling system of the motor, eliminating the filter and cleaning problems brought by the naked coils of the previous asynchronous traction motor. The use of direct -drive -driven iron boron permanent magnet motors makes certain rail transits expected to remove gear boxes in the near future, bringing revolutionary changes to the rail transit traction system. The permanent magnet traction has become the mainstream research direction of the next generation of world rail transit trains.
In recent years, Magplane LTD (Magplane LTD) has introduced the US magnetic suspension aircraft system in my country. The magnetic suspension aircraft system adopts the permanent magnet of the iron boron to perform a new type of suspended design. It is a new type of ground rail transit system. Each kilometer needs to be equipped with 2 magnetic suspended aircraft (train), and each magnetic suspension aircraft (train) will use about 10 tons of sintering tin iron boron material. By optimizing various types of transportation resources and the technical characteristics of various types of transportation resources, reducing costs and operating costs, the unity of intelligence, large capacity and high -speed unity is achieved. If the magnetic suspension aircraft system is put into the actual application, the short -range traffic system in the city can be integrated with the intercity mid -length transportation system, which will help to achieve the integration of urban complicated transportation systems.
In addition, the rare earth permanent magnet material is also used in a large number of magnetic suspension devices such as permanent magnet suspension wind turbine, permanent magnet bias suspension bearing, and magnetic suspension sensing motor.
The suspended electromagnetic/permanent magnet composite EMS structure uses the NDFEB permanent magnet. It does not require the refrigeration system, the structure is simple, the cost is low, which can reduce the power consumption of the entire system. The exclusion force is 16 times that of the iron oxygen, and at the same time, the suspension gap can be increased, the accuracy requirements of the track can be reduced, and the reliability of the suspended and the stability of the train operation is enhanced. On October 22, 2004, 32 people can be taken by 32 people and self -developed permanent magnet compensation magnetic suspension techniques. It can be almost zero, the transportation power is equivalent to the current train, and the safety is greatly improved. At present, my country is vigorously promoting the study of permanent magnet suspension trains using the iron boron magnets, which is expected to be a magnetic suspension train line with a speed of about 600km/h in the next few years.
Robotics, 3D printing and related intelligent manufacturing have attracted more and more attention. Smart robots have become a major core technology of the human reform world, and driving motors are the core components of robots. Inside the driving system, micro -iron boron magnetic steel is everywhere. There is information to check. At present, the robotic motor permanent magnet synchronous servo motor is the 钕 iron boron permanent magnet motor. The servo motor, controller, sensor and reducer are the core components of the robot control system and automated products. The joint activity of the robot is realized by the driving motor, and it requires a very large power quality ratio to the torque inertia ratio, high starting torque, low inertia and smooth and wide speed regulation range. Especially the robot end actuator (hand claw) should be used as a small amount of light motor as much as possible; when it is required to respond quickly, the driving motor must also have a large short -term overload capacity; higher reliability and stability are the driver driver The prerequisites used in industrial robots in industrial robots. In this regard, rare earth permanent magnet motors are the most suitable. Some agencies calculate that a 165kg welded robot currently needs to consume about 25 kg of high -performance 钕 iron boron. China has also included robots in the national development strategic plan. Chinese and foreign companies have deployed the robot industry in their actions and invested huge financial resources in the field of artificial intelligence and robotics.
The appearance of NDFEB magnets in terms of medical treatment has promoted the development and miniaturization of magnetic resonance imaging MRI. The permanent magnet RMI-CT nuclear magnetic resonance imaging equipment used to use iron oxygen permanent magnets in the past, and the magnetic weight was as high as 50 tons. After using the iron boron boron permanent magnet material, each nuclear magnetic resonance imaging instrument only required permanent magnet 0.5 to 3 tons, but the magnetic field The intensity has doubled, which greatly improves the image clarity, and the ingredients of the iron boron permanent magnet have the advantages of minimum land, the minimum magnetic leakage leakage, and the lowest operating costs. As a typical representative of medical robots, rehabilitation robots can help patients perform scientific and effective rehabilitation treatment. High -performance and high -integrated brushless DC motors are key parts of rehabilitation robot motor joints. Magnetic material.
The application of rare earth permanent magnets in the field of electron beams is mainly in various mass spectrometers, accelerators and microwave devices. Typical applications are periodic permanent magnets (REPM), electron beams or other particle beams are focused on changing the direction of the forward through the magnet. At present, the US -equipped patriotic air defense missiles can accurately intercept the target, thanks to the use of about 4 kilograms of 钐 cobalt magnets and cymbal iron boron magnets in its guidance system for electron beam focusing. The navigation positioning system of the M1A2 main battle tank uses rare earth magnets, "militia" intercontinental missiles, "trident" missiles, "fish fork" anti-ship missiles, JDAM precise guidance bombs, "hell fire" missiles, "Raptors" F-22, etc. Both use rare earth magnets.
Magnetoelectric and electromagnetic instrumental amounts of NDFEB account for about 6%of the total application amount. The application of NDFEB permanent magnet magnetic system is simple and can ensure the general requirements of high magnetic flux utilization and high magnetic flux density in the instrument magnetic system. At the same time, the NDFEB magnetic steel is small and light, which can be made into thin slices, providing the possibility of transformation for the miniaturization and precision of the groove table, wide -angle meter and special shape instrument.
In aerospace, from the Shenzhou series of spacecraft and the lunar exploration project Chang'e series satellite to the space rocket, it is inseparable from rare earth permanent magnet materials. Due to its prominent stability, reliability, and highest performance size than its prominent stability, reliability, and highest performance.
It, NDFEB is also widely used in other fields such as waxing, electronic communications, CNC machine tools, and home appliances.
In the upgrading of the domestic technology technology level and the breakthrough of proprietary equipment, the performance of various rare earth permanent magnet materials developed and produced in my country has approached or reached the international advanced level. With the gradual recovery of the world economy, the demand for high -performance sintering and iron boron in the Americas and Japanese markets has increased. The products of many iron boron magnetic manufacturers in my country have entered Japan, Europe, and the United States. The large -scale replacement of iron oxygen in China and the market for high -end iron boron products in my country, thereby promoting the growth of global iron boron boron.
Edit: Zhao Cuilu Fanying
(Expert: Zhu Minggang, professor, doctoral supervisor, Zhongguancun Open Laboratory-Advanced Magnetic Materials and Analysis Testing Laboratory, Director of the Steel Research Institute. Experts, members of the Fifth Permanent Magnetic Electric Professional Committee of the China Electricity Technology Society, technical experts of Chinese patent review, technical experts from the National Affairs Committee of China Laboratory. Jiang Ruizheng, lecturer, doctoral student. The preparation molding and performance research of magnetic master phase forever magnet materials. This article is recommended by the China Rare Earth Society, and the original debut of the popular Chinese micro platform.)