In modern industry, motors are ubiquitous. From elevators, air conditioners, new energy vehicles to intelligent manufacturing robots, motors run non-stop every second, converting electrical energy into mechanical energy. However, the invisible and intangible magnetic field inside the motor is the mystery of the motor's pulsation.
So, how to make the motor generate a strong enough magnetic field? Perhaps the rare earth permanent magnet is the best choice, which has the advantages of precise control, green energy saving and so on. Do you remember the magnets you played with as a kid? It is also a permanent magnet material, but the magnetic properties of rare earth permanent magnet materials are much higher, and even a small piece can have an extremely strong magnetic field. Therefore, it is able to form a strong and stable magnetic field in industrial motors, replacing the field coils of traditional motors.
What are the benefits of using a permanent magnet motor? First, it saves more than 30% energy than traditional motors, and second, it can meet the high-precision requirements of smart manufacturing for motors. Because of this, we sometimes call permanent magnet motors "revolutionary products". Today, with the massive increase in demand for permanent magnet materials, a large number of high-performance "magnets" are on their way to empowering the manufacturing industry.
Rare earth, this element seems inconspicuous, but it is an indispensable "vitamin" in today's modern industry. Rare earth permanent magnet materials, as one of the most important functional materials, are known as the main path of "turning stones into gold". At present, rare earth permanent magnet materials have become star products in the industry, and their output value has accounted for more than 70% of the output value of the entire rare earth industry. Among them, NdFeB is its core product, and its application fields cover emerging industries such as new energy vehicles, wind power generation, energy conservation and environmental protection. With the background of the "dual carbon" strategy, industrial permanent magnet motors will become the main place for the demand for high-performance NdFeB permanent magnet materials in the future.
However, the importance of rare earth permanent magnet materials does not stop there. With the rapid development of the modern manufacturing industry, the demand for high-precision equipment such as servo motors is becoming more and more urgent. However, it is difficult for traditional motors to meet the strict requirements of these devices for precision. However, the servo motor loaded with high-performance NdFeB permanent magnet materials can easily cope with it, realize high-precision control, and meet the requirements of energy saving and emission reduction. It is this high-performance and high-precision equipment that can make modern manufacturing more intelligent and efficient, thereby improving the productivity of the entire economy.
Of course, in order to manufacture high-performance and high-precision equipment, it is inseparable from the support of rare earth permanent magnet materials. Rare earth permanent magnet NdFeB quick-setting alloy flakes are the basic material for the production of NdFeB magnets, which determine the magnetic strength and performance. The quality of these basic materials is very critical, directly related to the performance and quality of various modern technological equipment. Satellite communications, maglev trains, medical magnetic resonance, mobile phones, etc. All need NdFeB magnets. Therefore, the advanced material industry cluster to which rare earth permanent magnet materials belong has become an important basic raw material industry supporting the development of the national economy.
It can be said that rare earth permanent magnet materials have become an indispensable "steel" in modern manufacturing. Its role is far more than that. The wide application of rare earth permanent magnet materials in modern industry not only reflects its importance, but also highlights its unique advantages. Rare earth permanent magnet materials are widely used in aviation, automobiles, electronics, new energy and other fields due to their strong magnetism, good temperature stability, and low energy consumption. Among them, the demand for rare earth permanent magnet materials in the field of new energy is even more urgent, especially in the field of motors, and its demand continues to grow.
With the development of emerging industries, industrial permanent magnet motors have become the main demand for high-performance NdFeB permanent magnet materials in the future. These high-performance permanent magnet motors not only have the characteristics of high energy efficiency, high precision, and high reliability, but also bring more energy-saving and emission-reduction benefits in the industrial production process, which coincides with the green manufacturing strategy called by the country.
However, the production and application of rare earth permanent magnet materials also face some challenges. Due to the uneven distribution of rare earth elements in nature, the industrial chain of rare earth permanent magnet materials is relatively long. From rare earth mining, extraction to processing and manufacturing, each link requires a lot of energy input and environmental protection. At the same time, the supply of rare earth permanent magnet materials is unstable, and the market price fluctuates greatly, which also limits its application scope and market competitiveness.
Therefore, in order to promote the sustainable development of the rare earth permanent magnet material industry, it is necessary to further strengthen technological research and development and innovation, explore alternative materials and new technologies, reduce energy consumption and environmental pollution, improve the utilization efficiency of rare earth resources, and at the same time strengthen international cooperation to jointly promote rare earth The healthy development of the permanent magnet material industry.
In short, rare earth permanent magnet materials, as the "vitamins" of modern industry, play an irreplaceable and important role in industrial production. In the future, we need to strengthen technological innovation and sustainable development to ensure that rare earth permanent magnet materials play a greater role in emerging industries and make greater contributions to promoting economic development and environmental protection.
Intelligent manufacturing endows high-performance magnetic materials with soul
Open the storage tank of the melting furnace, and the NdFeB alloy strips are shining with a shiny metallic luster, which seems ordinary but has unique potential. This unique material plays an increasingly important role in modern industry. The crystal structure of NdFeB permanent magnet materials has been formed as early as the smelting process. After forming, it must be sintered to achieve densification before it can be processed into various shapes and generate a strong magnetic field after magnetization. However, for the material to exhibit maximum magnetic properties, its potential needs to be exploited to the extreme. This requires 'giving soul' to the material during the production process.
So, how to maximize the potential of NdFeB materials in production? Through orientation molding, we can arrange the easy magnetization direction of the powder particles by loading the orientation magnetic field, so that it is consistent with the final magnetization direction of the magnet. In this way, in the final product, we can see the maximum magnetic properties of NdFeB materials. However, the traditional production method requires manual vacuum packaging and isostatic pressing before sintering. This process is not only time-consuming and labor-intensive, but also prone to unstable factors.
In order to solve this problem, the Chinese company introduced a fully automatic magnetic field orientation forming press and a billet transfer system, realizing the integration of NdFeB production, forming and sintering. This highly continuous, automated, and intelligent production line not only greatly improves production efficiency, but also ensures the stability of product quality. In terms of production line data, it is not staged or regional collection, but the whole process collection. This full-process collection not only provides an important foundation for digitalization and intelligence, but also enables continuous turnover of the process, thereby improving production efficiency.
Permanent magnet material, this small material has huge energy. They exist in our lives in the form of sponges, and the magnetic energy product and coercive force are their two core indicators. Just like putting a sponge into water, the amount of water absorbed by the sponge is equivalent to the magnetic energy product, and the difficulty of squeezing the water out is equivalent to the coercive force. High magnetic energy product and high coercive force respectively represent strong magnetic properties and anti-demagnetization ability, which is also the key to whether permanent magnetic materials can be labeled as "high performance".
According to public information, in permanent magnet synchronous reluctance motors, rare earth permanent magnets account for about 50% of the raw material cost of the entire motor. The driving motor of each new energy vehicle generally requires 2-3.5kg of high-performance NdFeB permanent magnet materials. This means that the popularity of new energy vehicles will greatly increase the demand for rare earth permanent magnet materials. However, the advanced technology in the industry can only reduce the addition of medium and heavy rare earths such as dysprosium and terbium in permanent magnet motors, and cannot completely replace rare earths. Therefore, the status of rare earth permanent magnet materials in the field of new energy vehicles is irreplaceable.
Nearly forty years have passed since the invention of NdFeB rare earth permanent magnet technology in the 1980s. During this time, technology was in the nascent stage of development for large-scale application. New energy and energy conservation and emission reduction are the direction of human efforts, and they are also the sea of stars. NdFeB permanent magnet materials are an important support in this direction, and they have been widely used in new energy vehicles, wind power generation, maglev trains and other fields. Therefore, the research and development of permanent magnetic materials is a crucial task, and they will provide an inexhaustible driving force for sustainable development in the future.