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磁铁的力量：它们如何影响我们的生活

磁铁的力量虽然看起来很小，但在我们的生活中起着至关重要的作用。它以一种无声而坚定的方式影响着我们的日常生活和工作。

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Talking about the application of permanent magnet materials in automotive EPS The full English name of EPS is Electronic Power Steering, which refers to the electronic power steering system. It uses the power generated by the electric motor to assist the driver in power steering. The steering system, as an important component of the entire vehicle, is one of the key systems that affect the handling stability, comfort, and driving safety of the vehicle.In the design of steering systems, in order to alleviate the contradiction between vehicle steering portability and steering sensitivity, most commercial vehicles and 50% of sedans use power steering systems. Since the 1950s, the power steering system has gone through three development stages: conventional hydraulic power steering system (HPS), electro-hydraulic power steering system (EHPS), and electric power assisted steering system (EPS), and there is a trend towards electronic and intelligent development.From a global perspective, the loading rate of automotive EPS has exceeded 50%. Abou: 24

2024-01

Application fields of neodymium iron boron permanent magnet materials 1. AutomobileWith the advent of the new energy vehicle era and the development of automotive electrification, rare earth permanent magnets have been widely used and play an important role. At present, Jinshi Magnet has become a first-class supplier for domestic automotive enterprises.2. Wind power generationCompared with doubly fed fans, permanent magnet direct drive fans have advantages such as high power generation efficiency, good grid compatibility, and low maintenance costs.3. Household appliancesRare earth permanent magnets play a core role in continuously improving the energy efficiency level of white goods. Through the continuous promotion and application of innovative technologies in the home appliance field, Jinshi Magnet has become a strategic cooperative supplier of magnetic steel for mainstream domestic brand home appliance groups, steadily growing in the home appliance market.Against the backdrop of Industry 4.0 and Made in China 2025, the demand for rare earth permanent: 23

2024-01

Why permanent magnet motors are becoming increasingly popular The latest achievements in high-energy permanent magnet materials, strong magnetic materials, and power electronics technology have greatly promoted the application fields of permanent magnet motors, such as robots, aerospace, electric tools, generators, new energy, various medical equipment, and electric or hybrid vehicles... etc. Permanent magnet motors are everywhere, and without exception, they demonstrate the fact that permanent magnet motors have many advantages over traditional motors such as brushed commutation DC motors, synchronous motors, and induction (asynchronous) motors.(1) The copper loss of the rotor is zero, resulting in higher natural efficiency;(2) High driving torque and output power per unit volume make compact design solutions possible;(3) Eliminating slip rings, phase converters, carbon brushes, etc. simplifies motor structure and maintenance;(4) The air gap magnetic flux density is relatively high compared to traditional motors, resulting in better dynamic perf: 23

2024-01

Analysis of the current neodymium iron boron market Although there are technical and financial barriers to the production of raw materials for neodymium iron boron, the single processing and production of rough magnets has low technical requirements, low costs, and low thresholds. This makes neodymium iron boron magnet factories very common in the manufacturing city of the Pearl River Delta. Along with small workshops for accessory processing of magnet products, Dongguan neodymium iron boron strong magnet factories are rampant. During the Spring and Autumn period and the Warring States period, there were still only a few countries competing for supremacy, and even the well-known Three Kingdoms period was limited to the Three Kingdoms. However, the processing factories in the neodymium iron boron industry were even more chaotic than the Five Dynasties and Ten Kingdoms period.The market has its own law of conservation. When the supply of a product in an industry exceeds the demand, it will inevitably lead to malicious competition among in: 20

2024-01

How to control the product quality of neodymium iron boron permanent magnets well Neodymium iron boron permanent magnet, also known as modern industrial monosodium glutamate, as a high-performance magnetic material in modern industry, promotes the progress of contemporary technology and society, and is widely used in various fields. How to judge the advantages of permanent magnet products: first, magnetic performance; 2、 The size of the magnet; 3、 Surface coating.1、 Magnetic propertiesFirstly, the key to the decision is to control the magnetic properties of the raw materials used in the production process.1. According to the national standards for purchasing raw materials, our company only sells neodymium iron boron sintered according to business needs, medium or low-grade.2. The advancement of production technology also determines the performance and quality of magnets.3. Quality monitoring during the production process is important.2、 Shape, size, and tolerance values of magnetsUtilize various shapes of neodymium iron boron magnets, such as circular, irregular, sq: 19

2024-01

How magnetic components can benefit from chips According to the 2022 China Automobile Production and Sales Data released by the China Association of Automobile Manufacturers (hereinafter referred to as "CAAM"). The data shows that the production and sales of automobiles in the first quarter were significantly affected by the epidemic; But in the second quarter, with the effective control of the epidemic situation and the promotion of national policies, the automobile market gradually recovered from April, and monthly sales continued to grow year-on-year. As of December, automobile production and sales have shown growth for nine consecutive months.At the press conference, Chen Shihua, the deputy secretary-general of the China Automobile Association, said that through the cultivation of the entire industrial chain of new energy vehicles over the years, each link has gradually matured, and the rich and diversified new energy vehicle products continue to meet market demand, and the use environment is gradually optimized and improved. U: 19

2024-01

The index that determines the performance of a magnet Residual magnetism (Br), magnetic induced coercivity (Hcb), intrinsic coercivity (Hcj), large magnetic energy product (BH), maximum operating temperature.1、 Residual magnetism in the performance of magnets:The full name of remanence is remanence induction intensity, which refers to the magnetic induction intensity exhibited by a magnet when it is saturated with an external magnetic field in a closed circuit environment and then removed from the external magnetic field.In layman's terms, remanence is the magnetic strength of a magnet after magnetization.Residual magnetism abbreviation: BrResidual magnetic units: measured in mT milliteslas and Gs Gauss.2、 Magnetic induction coercivity performance of magnets:The value of the reverse magnetic field strength required to reduce the magnetic induction intensity to zero when a magnet is in a technically saturated state during reverse magnetization is called magnetic coercivityIn layman's terms, a magnetized magnet requires a reverse ma: 18

2024-01

Analysis of Wireless Charging for Mobile Phones The concept of "wireless charging" sounds very cool, and the impact it brings seems to be no less than mobile phones replacing landline, digital replacing film, and WiFi replacing network cables. As soon as we see the word "wireless", we can't help but associate it with words like "free from constraints" and "freedom". However, seemingly cool wireless charging is not complicated in terms of technical principles, as Tesla, a scientist 100 years ago, had already proposed an idea. At present, the working mode of the vast majority of wireless chargers is that the coil in the charging head rotates to drive the back coil of the phone to rotate, thereby generating electricity.Advantages of wireless charging① Stronger sense of technologyCompared to traditional wired charging methods, wireless charging is undoubtedly more cool. It does not require a long data cable to be inserted into the phone. When charging, simply place the phone on the charging board and remove it directly when fully ch: 16

2024-01

Future market of neodymium iron boron Permanent magnet synchronous motors are widely used in pure electric and hybrid passenger cars. The high-performance neodymium iron boron magnetic material used in permanent magnet synchronous motors is about 1.8 kilograms. Considering the 60% consumption from raw materials to finished products, this part reaches 3 kilograms. In addition, the usage of EPS and other components reaches about 0.4 kilograms. Therefore, the usage of pure electric bicycles is about 3.4 kilograms, and the usage of hybrid bicycles is about 2.2 kilograms. Given the high energy conversion efficiency and low energy consumption of permanent magnet synchronous motors, the volume of permanent magnet synchronous motors is smaller and the efficiency is higher at the same power. It is expected that more electric vehicle models will use permanent magnet synchronous motors in the future, coupled with more vehicle models equipped with dual motor structures. There is room for further improvement in the single vehicle usage: 16

2024-01

Neglected TWS core component with poor expectations: magnet The TWS earphone industry chain has been booming recently. Currently, the TWS Bluetooth earphones on the market are quite diverse, and almost every company is designing, manufacturing, and producing this popular product, TWS Bluetooth earphones. But there is still unexplored virgin land, and there is a significant expectation gap, which is the magnet.Through disassembly, it can be seen that at least two magnets are needed for the charging case of each TWS earphone, and one magnet is required for each corresponding earphone. So each pair of headphones requires 4 magnets. Earphone magnet.In addition to headphones, a greater potential demand lies in smartwatches. Similarly, by dismantling the three WATCH, it was discovered that there are 6 magnets in the charging dock! At least 3 pieces are needed inside the watch!Let's take a look at the knowledge that a qualified structural engineer needs to know about the structure of headphones:As an essential electronic component for headphones,: 16

2024-01

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