1、 On the future trend of NdFeB magnets: NdFeB magnets can be divided into bonded NdFeB magnets and sintered NdFeB magnets. The bonding is injection molding, while sintering is vacuum molding by high temperature heating. Neodymium iron boron neodymium iron boron magnet, as the third generation of rare earth permanent magnet materials, has very high performance. It is widely used in energy, transportation, machinery, medical treatment, it, home appliances and other industries, especially with the development of knowledge economy represented by information technology, it brings new uses to functional materials such as rare earth permanent magnet neodymium iron boron industry, which brings a broader market for neodymium iron boron industry Jing. It is predicted that in the next 20 years, there will be no magnetic materials to replace NdFeB magnets. The important raw materials for producing neodymium iron boron neodymium iron boron magnets are rare earth metal neodymium, rare earth metal praseodymium, pure iron, aluminum, ferroboron alloy and other rare earth materials.

2、 Neodymium iron boron magnet manufacturer's principle of manufacturing neodymium iron boron magnet: according to the principle of electromagnetic induction, the current can generate magnetic field, and use strong magnetic field to magnetize hard magnetic material, which is commonly called neodymium iron boron magnet. In reality, there are several different things: the most popular neodymium iron boron magnet, such as the same common speaker's neodymium iron boron magnet, It is a ferromagnet. They are produced by using the iron scales (flake iron oxide) which fall off from the appearance of the rolled billet in the hot rolling process of the iron and steel plant, after impurity removal, grinding and adding a small amount of other substances, putting them into the steel mould for pressure forming, and then sintering in the reductive electric furnace (through hydrogen), reducing some oxides to ferrite, cooling and putting them into the exciter for magnetization. Ferromagnetic materials such as iron, cobalt, nickel or ferrite are different. The internal electronic spin can be consciously arranged in a small range to form a self-conscious magnetization area, which is called magnetic domain. After the ferromagnetic materials are magnetized, the internal magnetic domains are arranged uniformly and in the same direction, so that the magnetism is enhanced. NdFeB magnets are made by NdFeB magnet manufacturers. The absorption process of NdFeB magnet is the magnetization process of iron block. The magnetized iron block and different polarity of NdFeB magnet produce attraction, and the iron block firmly adheres to NdFeB magnet. Natural NdFeB magnets are Fe3O4 while artificial NdFeB magnets are usually steel. After being magnetized, steel will always retain its magnetism. The natural permanent NdFeB magnet is not only ferrite (Fe3O4), but also various permanent magnetic materials such as Fe Co Ni alloy and iron rare earth alloy, such as alnico, SmCo and NdFeB. These are also very common. The magnetism is especially strong. These materials can be magnetized by the constant magnetic field, and they can magnetize themselves It is magnetic and does not dissipate. The composition of NdFeB magnets made by NdFeB magnet manufacturers is determined according to the magnetization performance of various metals as necessary.

3、 Storage method of NdFeB magnet:
1. Neodymium iron boron strong magnetic material is hard, brittle and has strong magnetic field. It should be handled with care (especially large size and thin sheet). When the strong magnet itself or is absorbed or separated from other ironware, it should be handled carefully and not be impacted. Otherwise, it is easy to cause collision and damage magnets or pinch fingers.
2. Because NdFeB is a kind of multi metal alloy material with density between 7.45, it has the characteristics of heavy and brittle. Therefore, special care shall be taken during handling to avoid magnetic breakage.
3. Storage should also keep the environment dry, do not directly stack on the ground, pad on cardboard or placed on shelves.
4. If the magnet is removed vertically, it is not only difficult to remove, but also easy to cause the magnet to crash. Correct way: gently open it to the side, and slide it back from the outside to the inside.
5. Warehouse temperature should not exceed 80 degrees, because exceeding this temperature will cause loss of magnetic properties.

4、 The status and function of rare earth Nd-Fe-B in the national economy: materials are the important material basis of social progress, the main sign of human progress, and the milestone of social progress. Throughout the history of human development, it will be found that the discovery and wide use of any kind of new materials will improve the ability of human beings to transform nature to a new level. Neodymium iron boron magnetic materials in functional materials have been highly valued since ancient times. As early as the third century BC, Sinan had been made of natural magnetite. In the Song Dynasty, compass was made of steel needle magnetization, which provided the key technology for the development of navigation. Neodymium iron boron is a kind of functional material with important influence. It has been widely used in transportation, energy, machinery, computer, household appliances, microwave communication, instrument technology, electrical engineering, automation technology, automobile industry, petrochemical industry, bioengineering and other fields. Its consumption has become one of the important signs to measure a country's comprehensive national strength and national economic development level One of the foundations of the credit litigation industry. Some people liken the invention and application of semiconductor integrated circuit to the modern information industry with a complete brain, then the application of rare earth neodymium iron boron magnet gives the modern information industry the limbs to walk and the powerful wings to fly.

5、 The demand for NdFeB permanent magnet in China has increased greatly, and it has become a big country of production and consumption in the world: NdFeB permanent magnet has good mechanical properties and high energy density, which is conducive to the lightness, thinness, miniaturization or ultra miniaturization of magnetic components. The appearance of NdFeB permanent magnet not only makes the electro acoustic motor, instrument, magnetic separation and magnetization, medical equipment and other equipment develop towards miniaturization, high frequency, high performance, low loss and low noise, but also expands its application from traditional fields to new energy automobile, wind power generation, energy-saving household appliances, aerospace and other emerging fields with the characteristics of energy conservation and environmental protection.
Before the 1990s, the world's NdFeB permanent magnet manufacturers were mainly concentrated in Japan, the United States, Europe and other countries or regions, among which Japan was the largest producer of NdFeB permanent magnet materials in the world at that time, accounting for more than half of the world's total production. With the increase of production cost in developed countries, the increasing demand for NdFeB in China's downstream industries and the improvement of its product competitiveness, the international famous NdFeB manufacturers in the United States, Europe and Japan have taken joint ventures or established processing bases to transfer to China, which has driven the rapid development of local production enterprises. In 2001, China's output of NdFeB reached 6500 tons, which has surpassed Japan and become the world's largest production base of NdFeB permanent magnet. For a long time, most manufacturers of sintered Nd-Fe-B in China have been producing low-end products, and they are facing great market competition pressure. In recent years, driven by the development of strategic emerging industries such as energy conservation and environmental protection, new energy vehicles, information technology and high-end equipment, some domestic enterprises continue to introduce foreign advanced production technology, equipment and management experience of NdFeB permanent magnet, invest funds to carry out independent research and development, and promote the rapid improvement of NdFeB manufacturing technology in China. According to the Research Report on in-depth market research and development trend forecast of China's NdFeB industry in 2018-2023 released by xinsijie Industrial Research Center, the annual compound growth rate of global demand for high-performance NdFeB permanent magnet will reach 19% in 2016-2018, including new energy automobile drive motor, automobile micro motor (including EPS), variable frequency air conditioning, robot and energy-saving elevator And other areas will become important growth drivers. China has developed into a global producer and consumer of NdFeB permanent magnetic materials. In terms of product varieties, the grade and quality of NdFeB permanent magnet products in China have been significantly improved. Taking n series as an example, it has developed from only producing medium and low grade products below N40 to producing high grade products of n45-n52. At present, the specifications of high, medium and low grade products are complete, the production equipment has gradually realized localization, and the product performance has gradually reached the advanced level of foreign countries. In 2013, the output of NdFeB materials in China reached 94000 tons, accounting for more than 85% of the total global output. In the past decade, the global production of NdFeB has grown rapidly. In 2013, the global total production of NdFeB reached about 110000 tons, of which the production of high-performance NdFeB was about 42800 tons, an increase of 16.56% year on year, accounting for more than 35% of the total production of NdFeB. With the construction of global low-carbon economy, energy-saving and environmental protection oriented society, new energy vehicles, energy-saving household appliances, wind power generation, national defense and military industry and other emerging industries began to rise gradually, and the demand for neodymium, iron and boron continued to show new growth points. High performance NdFeB will be in short supply in the next few years due to its high industrial barriers and slow production cycle.

6、 Wind power and new energy vehicles drive the demand of NdFeB: NdFeB grows rapidly in the clean new energy industry. From the 2014 Ningbo International Conference on NdFeB, we learned that due to the strong demand of new industries such as wind power and new energy vehicles, the development of rare earth permanent magnet materials will be strongly promoted, and the fastest growing application of rare earth will be permanent magnet materials. Industry insiders said that with the acceleration of the establishment of the national rare earth group and the expectation of rare earth storage, the price of rare earth is expected to stabilize.